./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.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 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:10:03,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:10:03,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:10:03,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:10:03,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:10:03,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:10:03,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:10:03,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:10:03,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:10:03,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:10:03,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:10:03,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:10:03,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:10:03,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:10:03,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:10:03,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:10:03,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:10:03,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:10:03,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:10:03,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:10:03,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:10:03,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:10:03,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:10:03,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:10:03,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:10:03,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:10:03,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:10:03,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:10:03,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:10:03,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:10:03,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:10:03,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:10:03,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:10:03,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:10:03,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:10:03,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:10:03,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:10:03,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:10:03,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:10:03,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:10:03,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:10:03,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:10:03,223 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:10:03,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:10:03,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:10:03,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:10:03,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:10:03,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:10:03,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:10:03,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:10:03,225 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:10:03,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:10:03,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:10:03,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:10:03,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:10:03,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:10:03,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:10:03,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:10:03,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:10:03,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:10:03,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:10:03,227 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:10:03,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:10:03,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:10:03,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:10:03,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:10:03,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:10:03,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:10:03,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:10:03,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:10:03,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:10:03,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:10:03,229 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:10:03,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:10:03,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:10:03,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:10:03,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 [2021-12-16 01:10:03,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:10:03,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:10:03,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:10:03,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:10:03,412 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:10:03,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2021-12-16 01:10:03,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6348f5df7/b4e6ba8963294696be60d85174bb092b/FLAG51efc566b [2021-12-16 01:10:03,871 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:10:03,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2021-12-16 01:10:03,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6348f5df7/b4e6ba8963294696be60d85174bb092b/FLAG51efc566b [2021-12-16 01:10:03,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6348f5df7/b4e6ba8963294696be60d85174bb092b [2021-12-16 01:10:03,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:10:03,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:10:03,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:10:03,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:10:03,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:10:03,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:10:03" (1/1) ... [2021-12-16 01:10:03,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6770cbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:03, skipping insertion in model container [2021-12-16 01:10:03,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:10:03" (1/1) ... [2021-12-16 01:10:03,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:10:03,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:10:04,111 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2021-12-16 01:10:04,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:10:04,120 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:10:04,163 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2021-12-16 01:10:04,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:10:04,173 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:10:04,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04 WrapperNode [2021-12-16 01:10:04,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:10:04,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:10:04,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:10:04,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:10:04,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,222 INFO L137 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 405 [2021-12-16 01:10:04,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:10:04,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:10:04,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:10:04,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:10:04,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:10:04,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:10:04,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:10:04,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:10:04,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:10:04,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:04,284 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) [2021-12-16 01:10:04,286 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 [2021-12-16 01:10:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:10:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2021-12-16 01:10:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2021-12-16 01:10:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-16 01:10:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-16 01:10:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2021-12-16 01:10:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2021-12-16 01:10:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2021-12-16 01:10:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2021-12-16 01:10:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2021-12-16 01:10:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2021-12-16 01:10:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 01:10:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 01:10:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:10:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:10:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:10:04,403 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:10:04,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:10:04,793 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:10:04,799 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:10:04,800 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 01:10:04,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:10:04 BoogieIcfgContainer [2021-12-16 01:10:04,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:10:04,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:10:04,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:10:04,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:10:04,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:10:03" (1/3) ... [2021-12-16 01:10:04,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f7cce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:10:04, skipping insertion in model container [2021-12-16 01:10:04,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (2/3) ... [2021-12-16 01:10:04,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f7cce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:10:04, skipping insertion in model container [2021-12-16 01:10:04,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:10:04" (3/3) ... [2021-12-16 01:10:04,810 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2021-12-16 01:10:04,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:10:04,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:10:04,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:10:04,848 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 [2021-12-16 01:10:04,849 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:10:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 142 states have (on average 1.591549295774648) internal successors, (226), 147 states have internal predecessors, (226), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-16 01:10:04,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 01:10:04,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:04,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:04,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:04,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2110673050, now seen corresponding path program 1 times [2021-12-16 01:10:04,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:04,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663042275] [2021-12-16 01:10:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:04,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663042275] [2021-12-16 01:10:05,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663042275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:05,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638614685] [2021-12-16 01:10:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:05,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:05,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:05,094 INFO L87 Difference]: Start difference. First operand has 187 states, 142 states have (on average 1.591549295774648) internal successors, (226), 147 states have internal predecessors, (226), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,205 INFO L93 Difference]: Finished difference Result 375 states and 645 transitions. [2021-12-16 01:10:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:05,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-16 01:10:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,226 INFO L225 Difference]: With dead ends: 375 [2021-12-16 01:10:05,228 INFO L226 Difference]: Without dead ends: 191 [2021-12-16 01:10:05,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:05,238 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 18 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 835 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-16 01:10:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2021-12-16 01:10:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 144 states have (on average 1.5416666666666667) internal successors, (222), 148 states have internal predecessors, (222), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-16 01:10:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 296 transitions. [2021-12-16 01:10:05,309 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 296 transitions. Word has length 15 [2021-12-16 01:10:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,309 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 296 transitions. [2021-12-16 01:10:05,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 296 transitions. [2021-12-16 01:10:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 01:10:05,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:05,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:10:05,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1922034334, now seen corresponding path program 1 times [2021-12-16 01:10:05,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310883992] [2021-12-16 01:10:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310883992] [2021-12-16 01:10:05,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310883992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:05,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156096966] [2021-12-16 01:10:05,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:05,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:05,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:05,375 INFO L87 Difference]: Start difference. First operand 189 states and 296 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,429 INFO L93 Difference]: Finished difference Result 391 states and 615 transitions. [2021-12-16 01:10:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:05,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-16 01:10:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,433 INFO L225 Difference]: With dead ends: 391 [2021-12-16 01:10:05,433 INFO L226 Difference]: Without dead ends: 205 [2021-12-16 01:10:05,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:05,437 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 25 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 856 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-16 01:10:05,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2021-12-16 01:10:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 155 states have (on average 1.5225806451612902) internal successors, (236), 159 states have internal predecessors, (236), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 01:10:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 312 transitions. [2021-12-16 01:10:05,460 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 312 transitions. Word has length 16 [2021-12-16 01:10:05,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,461 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 312 transitions. [2021-12-16 01:10:05,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:05,461 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 312 transitions. [2021-12-16 01:10:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-16 01:10:05,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,468 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:05,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:10:05,468 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash -784914242, now seen corresponding path program 1 times [2021-12-16 01:10:05,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088841841] [2021-12-16 01:10:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088841841] [2021-12-16 01:10:05,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088841841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:10:05,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899071428] [2021-12-16 01:10:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:10:05,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:10:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:10:05,530 INFO L87 Difference]: Start difference. First operand 202 states and 312 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 01:10:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,552 INFO L93 Difference]: Finished difference Result 423 states and 661 transitions. [2021-12-16 01:10:05,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:10:05,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-16 01:10:05,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,556 INFO L225 Difference]: With dead ends: 423 [2021-12-16 01:10:05,557 INFO L226 Difference]: Without dead ends: 231 [2021-12-16 01:10:05,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:10:05,563 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 22 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 581 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-16 01:10:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 204. [2021-12-16 01:10:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 157 states have (on average 1.515923566878981) internal successors, (238), 161 states have internal predecessors, (238), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 01:10:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 314 transitions. [2021-12-16 01:10:05,586 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 314 transitions. Word has length 24 [2021-12-16 01:10:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,586 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 314 transitions. [2021-12-16 01:10:05,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 01:10:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 314 transitions. [2021-12-16 01:10:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 01:10:05,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,589 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 01:10:05,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:10:05,590 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1820136659, now seen corresponding path program 1 times [2021-12-16 01:10:05,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702511909] [2021-12-16 01:10:05,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702511909] [2021-12-16 01:10:05,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702511909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:05,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425219519] [2021-12-16 01:10:05,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:05,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:05,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:05,696 INFO L87 Difference]: Start difference. First operand 204 states and 314 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:05,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,723 INFO L93 Difference]: Finished difference Result 506 states and 798 transitions. [2021-12-16 01:10:05,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:05,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-12-16 01:10:05,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,726 INFO L225 Difference]: With dead ends: 506 [2021-12-16 01:10:05,727 INFO L226 Difference]: Without dead ends: 318 [2021-12-16 01:10:05,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:05,731 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 130 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1222 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-12-16 01:10:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 208. [2021-12-16 01:10:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 160 states have (on average 1.50625) internal successors, (241), 164 states have internal predecessors, (241), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2021-12-16 01:10:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 318 transitions. [2021-12-16 01:10:05,741 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 318 transitions. Word has length 32 [2021-12-16 01:10:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,741 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 318 transitions. [2021-12-16 01:10:05,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 318 transitions. [2021-12-16 01:10:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 01:10:05,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,743 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] [2021-12-16 01:10:05,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:10:05,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1536399393, now seen corresponding path program 1 times [2021-12-16 01:10:05,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630623541] [2021-12-16 01:10:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:10:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630623541] [2021-12-16 01:10:05,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630623541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:10:05,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918435491] [2021-12-16 01:10:05,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:10:05,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:10:05,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:05,800 INFO L87 Difference]: Start difference. First operand 208 states and 318 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 01:10:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,858 INFO L93 Difference]: Finished difference Result 361 states and 558 transitions. [2021-12-16 01:10:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:10:05,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-16 01:10:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,860 INFO L225 Difference]: With dead ends: 361 [2021-12-16 01:10:05,860 INFO L226 Difference]: Without dead ends: 204 [2021-12-16 01:10:05,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:10:05,861 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 130 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1240 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-16 01:10:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-12-16 01:10:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 157 states have (on average 1.484076433121019) internal successors, (233), 161 states have internal predecessors, (233), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 01:10:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 309 transitions. [2021-12-16 01:10:05,875 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 309 transitions. Word has length 35 [2021-12-16 01:10:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,875 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 309 transitions. [2021-12-16 01:10:05,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 01:10:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 309 transitions. [2021-12-16 01:10:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 01:10:05,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,878 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 01:10:05,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:10:05,879 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2059225234, now seen corresponding path program 1 times [2021-12-16 01:10:05,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643161412] [2021-12-16 01:10:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643161412] [2021-12-16 01:10:05,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643161412] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:05,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525267759] [2021-12-16 01:10:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:05,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:05,951 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) [2021-12-16 01:10:05,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 01:10:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 01:10:06,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:06,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:06,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525267759] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:06,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:06,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-12-16 01:10:06,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941335491] [2021-12-16 01:10:06,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:06,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:06,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,188 INFO L87 Difference]: Start difference. First operand 204 states and 309 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 01:10:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,221 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2021-12-16 01:10:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:06,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2021-12-16 01:10:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,226 INFO L225 Difference]: With dead ends: 456 [2021-12-16 01:10:06,227 INFO L226 Difference]: Without dead ends: 263 [2021-12-16 01:10:06,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,231 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 98 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 595 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-12-16 01:10:06,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2021-12-16 01:10:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 200 states have (on average 1.46) internal successors, (292), 204 states have internal predecessors, (292), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-16 01:10:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 388 transitions. [2021-12-16 01:10:06,243 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 388 transitions. Word has length 35 [2021-12-16 01:10:06,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,244 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 388 transitions. [2021-12-16 01:10:06,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 01:10:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 388 transitions. [2021-12-16 01:10:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 01:10:06,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,246 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:06,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:06,463 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,SelfDestructingSolverStorable5 [2021-12-16 01:10:06,464 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash 253396334, now seen corresponding path program 2 times [2021-12-16 01:10:06,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455125807] [2021-12-16 01:10:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-16 01:10:06,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:06,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455125807] [2021-12-16 01:10:06,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455125807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:06,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:06,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:06,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375466] [2021-12-16 01:10:06,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:06,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:06,522 INFO L87 Difference]: Start difference. First operand 257 states and 388 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,550 INFO L93 Difference]: Finished difference Result 494 states and 766 transitions. [2021-12-16 01:10:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:06,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-16 01:10:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,552 INFO L225 Difference]: With dead ends: 494 [2021-12-16 01:10:06,552 INFO L226 Difference]: Without dead ends: 266 [2021-12-16 01:10:06,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,554 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 19 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 834 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-16 01:10:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2021-12-16 01:10:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 206 states have (on average 1.4563106796116505) internal successors, (300), 210 states have internal predecessors, (300), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-16 01:10:06,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 396 transitions. [2021-12-16 01:10:06,564 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 396 transitions. Word has length 57 [2021-12-16 01:10:06,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,565 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 396 transitions. [2021-12-16 01:10:06,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:06,565 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 396 transitions. [2021-12-16 01:10:06,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 01:10:06,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,567 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:06,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:10:06,568 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1207102941, now seen corresponding path program 1 times [2021-12-16 01:10:06,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689516299] [2021-12-16 01:10:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 01:10:06,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689516299] [2021-12-16 01:10:06,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689516299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:06,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:06,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:06,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119907949] [2021-12-16 01:10:06,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:06,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:06,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:06,631 INFO L87 Difference]: Start difference. First operand 264 states and 396 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:06,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,661 INFO L93 Difference]: Finished difference Result 538 states and 818 transitions. [2021-12-16 01:10:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-16 01:10:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,666 INFO L225 Difference]: With dead ends: 538 [2021-12-16 01:10:06,666 INFO L226 Difference]: Without dead ends: 303 [2021-12-16 01:10:06,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,669 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 24 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 848 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-16 01:10:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 300. [2021-12-16 01:10:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 238 states have (on average 1.415966386554622) internal successors, (337), 242 states have internal predecessors, (337), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-16 01:10:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 439 transitions. [2021-12-16 01:10:06,684 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 439 transitions. Word has length 57 [2021-12-16 01:10:06,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,685 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 439 transitions. [2021-12-16 01:10:06,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 439 transitions. [2021-12-16 01:10:06,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-16 01:10:06,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,687 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:06,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:10:06,687 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1632698932, now seen corresponding path program 1 times [2021-12-16 01:10:06,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663924017] [2021-12-16 01:10:06,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-16 01:10:06,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:06,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663924017] [2021-12-16 01:10:06,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663924017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:06,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:06,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:06,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984900197] [2021-12-16 01:10:06,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:06,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,760 INFO L87 Difference]: Start difference. First operand 300 states and 439 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,775 INFO L93 Difference]: Finished difference Result 549 states and 817 transitions. [2021-12-16 01:10:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:06,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2021-12-16 01:10:06,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,776 INFO L225 Difference]: With dead ends: 549 [2021-12-16 01:10:06,777 INFO L226 Difference]: Without dead ends: 302 [2021-12-16 01:10:06,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,778 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 0 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1131 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-12-16 01:10:06,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2021-12-16 01:10:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 238 states have (on average 1.403361344537815) internal successors, (334), 242 states have internal predecessors, (334), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-16 01:10:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 436 transitions. [2021-12-16 01:10:06,785 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 436 transitions. Word has length 75 [2021-12-16 01:10:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,785 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 436 transitions. [2021-12-16 01:10:06,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 436 transitions. [2021-12-16 01:10:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-16 01:10:06,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,787 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:06,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:10:06,787 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1594312955, now seen corresponding path program 1 times [2021-12-16 01:10:06,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292964514] [2021-12-16 01:10:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-16 01:10:06,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:06,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292964514] [2021-12-16 01:10:06,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292964514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:06,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:06,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:06,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325571050] [2021-12-16 01:10:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:06,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:06,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:06,839 INFO L87 Difference]: Start difference. First operand 300 states and 436 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,867 INFO L93 Difference]: Finished difference Result 586 states and 873 transitions. [2021-12-16 01:10:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:06,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2021-12-16 01:10:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,869 INFO L225 Difference]: With dead ends: 586 [2021-12-16 01:10:06,869 INFO L226 Difference]: Without dead ends: 344 [2021-12-16 01:10:06,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,870 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 25 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 848 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-16 01:10:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 341. [2021-12-16 01:10:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 275 states have (on average 1.3672727272727272) internal successors, (376), 279 states have internal predecessors, (376), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-12-16 01:10:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 484 transitions. [2021-12-16 01:10:06,879 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 484 transitions. Word has length 104 [2021-12-16 01:10:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,879 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 484 transitions. [2021-12-16 01:10:06,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 484 transitions. [2021-12-16 01:10:06,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:10:06,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,880 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:06,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:10:06,881 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash 611529803, now seen corresponding path program 1 times [2021-12-16 01:10:06,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902540382] [2021-12-16 01:10:06,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-16 01:10:06,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:06,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902540382] [2021-12-16 01:10:06,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902540382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:06,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:06,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:06,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974458712] [2021-12-16 01:10:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:06,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:06,928 INFO L87 Difference]: Start difference. First operand 341 states and 484 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,962 INFO L93 Difference]: Finished difference Result 612 states and 893 transitions. [2021-12-16 01:10:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:06,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2021-12-16 01:10:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,964 INFO L225 Difference]: With dead ends: 612 [2021-12-16 01:10:06,964 INFO L226 Difference]: Without dead ends: 335 [2021-12-16 01:10:06,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,965 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 15 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 807 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-12-16 01:10:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-12-16 01:10:06,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 270 states have (on average 1.348148148148148) internal successors, (364), 274 states have internal predecessors, (364), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-16 01:10:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 470 transitions. [2021-12-16 01:10:06,972 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 470 transitions. Word has length 105 [2021-12-16 01:10:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,973 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 470 transitions. [2021-12-16 01:10:06,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 470 transitions. [2021-12-16 01:10:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 01:10:06,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,974 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:06,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:10:06,974 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash 435829863, now seen corresponding path program 1 times [2021-12-16 01:10:06,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575410096] [2021-12-16 01:10:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-16 01:10:07,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575410096] [2021-12-16 01:10:07,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575410096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:07,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576792847] [2021-12-16 01:10:07,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:07,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,035 INFO L87 Difference]: Start difference. First operand 335 states and 470 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,052 INFO L93 Difference]: Finished difference Result 587 states and 842 transitions. [2021-12-16 01:10:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:07,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2021-12-16 01:10:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,055 INFO L225 Difference]: With dead ends: 587 [2021-12-16 01:10:07,055 INFO L226 Difference]: Without dead ends: 337 [2021-12-16 01:10:07,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,056 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 0 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1115 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-16 01:10:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2021-12-16 01:10:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 270 states have (on average 1.337037037037037) internal successors, (361), 274 states have internal predecessors, (361), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-16 01:10:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 467 transitions. [2021-12-16 01:10:07,067 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 467 transitions. Word has length 124 [2021-12-16 01:10:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,067 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 467 transitions. [2021-12-16 01:10:07,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 467 transitions. [2021-12-16 01:10:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-16 01:10:07,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,069 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:07,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:10:07,070 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1733513262, now seen corresponding path program 1 times [2021-12-16 01:10:07,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077077593] [2021-12-16 01:10:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-16 01:10:07,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077077593] [2021-12-16 01:10:07,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077077593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:07,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403331079] [2021-12-16 01:10:07,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:07,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:07,139 INFO L87 Difference]: Start difference. First operand 335 states and 467 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,177 INFO L93 Difference]: Finished difference Result 550 states and 802 transitions. [2021-12-16 01:10:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:07,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2021-12-16 01:10:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,179 INFO L225 Difference]: With dead ends: 550 [2021-12-16 01:10:07,180 INFO L226 Difference]: Without dead ends: 333 [2021-12-16 01:10:07,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,181 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 13 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 775 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-16 01:10:07,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-12-16 01:10:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 269 states have (on average 1.3345724907063197) internal successors, (359), 273 states have internal predecessors, (359), 52 states have call successors, (52), 11 states have call predecessors, (52), 11 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 01:10:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 463 transitions. [2021-12-16 01:10:07,188 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 463 transitions. Word has length 157 [2021-12-16 01:10:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,188 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 463 transitions. [2021-12-16 01:10:07,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 463 transitions. [2021-12-16 01:10:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-16 01:10:07,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,189 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:07,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:10:07,190 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2146412456, now seen corresponding path program 1 times [2021-12-16 01:10:07,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234147178] [2021-12-16 01:10:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-16 01:10:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-12-16 01:10:07,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234147178] [2021-12-16 01:10:07,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234147178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:07,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867504925] [2021-12-16 01:10:07,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:07,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:07,297 INFO L87 Difference]: Start difference. First operand 333 states and 463 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-16 01:10:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,336 INFO L93 Difference]: Finished difference Result 490 states and 698 transitions. [2021-12-16 01:10:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 176 [2021-12-16 01:10:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,338 INFO L225 Difference]: With dead ends: 490 [2021-12-16 01:10:07,338 INFO L226 Difference]: Without dead ends: 316 [2021-12-16 01:10:07,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,339 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 35 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 756 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-16 01:10:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-12-16 01:10:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 255 states have (on average 1.3254901960784313) internal successors, (338), 259 states have internal predecessors, (338), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-16 01:10:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 436 transitions. [2021-12-16 01:10:07,346 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 436 transitions. Word has length 176 [2021-12-16 01:10:07,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,346 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 436 transitions. [2021-12-16 01:10:07,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-16 01:10:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 436 transitions. [2021-12-16 01:10:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-16 01:10:07,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,348 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:07,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:10:07,348 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1743531092, now seen corresponding path program 1 times [2021-12-16 01:10:07,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949982564] [2021-12-16 01:10:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-16 01:10:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-12-16 01:10:07,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949982564] [2021-12-16 01:10:07,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949982564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:07,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847867736] [2021-12-16 01:10:07,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:07,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:07,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:07,424 INFO L87 Difference]: Start difference. First operand 316 states and 436 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-16 01:10:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,461 INFO L93 Difference]: Finished difference Result 473 states and 671 transitions. [2021-12-16 01:10:07,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:07,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 178 [2021-12-16 01:10:07,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,463 INFO L225 Difference]: With dead ends: 473 [2021-12-16 01:10:07,463 INFO L226 Difference]: Without dead ends: 297 [2021-12-16 01:10:07,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,465 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 30 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 760 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-12-16 01:10:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-12-16 01:10:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 239 states have (on average 1.3179916317991631) internal successors, (315), 243 states have internal predecessors, (315), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-16 01:10:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 407 transitions. [2021-12-16 01:10:07,472 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 407 transitions. Word has length 178 [2021-12-16 01:10:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,472 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 407 transitions. [2021-12-16 01:10:07,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-16 01:10:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 407 transitions. [2021-12-16 01:10:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:10:07,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,473 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:07,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:10:07,474 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,474 INFO L85 PathProgramCache]: Analyzing trace with hash -892980879, now seen corresponding path program 1 times [2021-12-16 01:10:07,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262037060] [2021-12-16 01:10:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-16 01:10:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-16 01:10:07,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262037060] [2021-12-16 01:10:07,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262037060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:07,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265094034] [2021-12-16 01:10:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:07,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:07,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,569 INFO L87 Difference]: Start difference. First operand 297 states and 407 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-16 01:10:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,581 INFO L93 Difference]: Finished difference Result 453 states and 641 transitions. [2021-12-16 01:10:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:07,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 179 [2021-12-16 01:10:07,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,582 INFO L225 Difference]: With dead ends: 453 [2021-12-16 01:10:07,582 INFO L226 Difference]: Without dead ends: 297 [2021-12-16 01:10:07,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,583 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1093 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-12-16 01:10:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-12-16 01:10:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 239 states have (on average 1.292887029288703) internal successors, (309), 243 states have internal predecessors, (309), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-16 01:10:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 401 transitions. [2021-12-16 01:10:07,590 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 401 transitions. Word has length 179 [2021-12-16 01:10:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,590 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 401 transitions. [2021-12-16 01:10:07,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-16 01:10:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 401 transitions. [2021-12-16 01:10:07,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-16 01:10:07,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,592 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:07,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 01:10:07,592 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2002114655, now seen corresponding path program 1 times [2021-12-16 01:10:07,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390746426] [2021-12-16 01:10:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-16 01:10:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-16 01:10:07,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390746426] [2021-12-16 01:10:07,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390746426] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:07,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852618285] [2021-12-16 01:10:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:07,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:07,702 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) [2021-12-16 01:10:07,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 01:10:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-16 01:10:08,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-16 01:10:08,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852618285] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:08,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 01:10:08,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2021-12-16 01:10:08,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3873004] [2021-12-16 01:10:08,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:08,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:08,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:08,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:08,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:08,263 INFO L87 Difference]: Start difference. First operand 297 states and 401 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:08,287 INFO L93 Difference]: Finished difference Result 474 states and 663 transitions. [2021-12-16 01:10:08,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:08,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 186 [2021-12-16 01:10:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:08,288 INFO L225 Difference]: With dead ends: 474 [2021-12-16 01:10:08,289 INFO L226 Difference]: Without dead ends: 276 [2021-12-16 01:10:08,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 396 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:08,289 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 35 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:08,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 519 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-16 01:10:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-12-16 01:10:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 221 states have (on average 1.2850678733031675) internal successors, (284), 225 states have internal predecessors, (284), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-16 01:10:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 370 transitions. [2021-12-16 01:10:08,295 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 370 transitions. Word has length 186 [2021-12-16 01:10:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:08,295 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 370 transitions. [2021-12-16 01:10:08,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 370 transitions. [2021-12-16 01:10:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-16 01:10:08,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:08,297 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:08,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:08,515 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,SelfDestructingSolverStorable16 [2021-12-16 01:10:08,516 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1523071826, now seen corresponding path program 1 times [2021-12-16 01:10:08,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:08,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416643111] [2021-12-16 01:10:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:08,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-16 01:10:08,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:08,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416643111] [2021-12-16 01:10:08,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416643111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:08,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:08,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:08,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078484212] [2021-12-16 01:10:08,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:08,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:08,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:08,611 INFO L87 Difference]: Start difference. First operand 276 states and 370 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 01:10:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:08,640 INFO L93 Difference]: Finished difference Result 431 states and 604 transitions. [2021-12-16 01:10:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:08,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 210 [2021-12-16 01:10:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:08,642 INFO L225 Difference]: With dead ends: 431 [2021-12-16 01:10:08,642 INFO L226 Difference]: Without dead ends: 282 [2021-12-16 01:10:08,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:08,643 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 6 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:08,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 800 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-16 01:10:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2021-12-16 01:10:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 224 states have (on average 1.28125) internal successors, (287), 228 states have internal predecessors, (287), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-16 01:10:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 373 transitions. [2021-12-16 01:10:08,648 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 373 transitions. Word has length 210 [2021-12-16 01:10:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:08,649 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 373 transitions. [2021-12-16 01:10:08,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 01:10:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 373 transitions. [2021-12-16 01:10:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-16 01:10:08,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:08,650 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:08,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 01:10:08,650 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:08,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash 45888737, now seen corresponding path program 1 times [2021-12-16 01:10:08,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:08,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126021177] [2021-12-16 01:10:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:08,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-16 01:10:08,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:08,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126021177] [2021-12-16 01:10:08,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126021177] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:08,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513599099] [2021-12-16 01:10:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:08,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:08,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:08,730 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) [2021-12-16 01:10:08,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 01:10:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:08,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-16 01:10:09,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:09,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513599099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:09,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:09,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:09,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210181614] [2021-12-16 01:10:09,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:09,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:09,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:09,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:09,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:09,098 INFO L87 Difference]: Start difference. First operand 280 states and 373 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 01:10:09,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:09,132 INFO L93 Difference]: Finished difference Result 440 states and 611 transitions. [2021-12-16 01:10:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:09,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 219 [2021-12-16 01:10:09,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:09,134 INFO L225 Difference]: With dead ends: 440 [2021-12-16 01:10:09,134 INFO L226 Difference]: Without dead ends: 287 [2021-12-16 01:10:09,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:09,135 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 7 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:09,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:09,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-12-16 01:10:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2021-12-16 01:10:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 228 states have (on average 1.2763157894736843) internal successors, (291), 232 states have internal predecessors, (291), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-16 01:10:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 377 transitions. [2021-12-16 01:10:09,141 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 377 transitions. Word has length 219 [2021-12-16 01:10:09,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:09,143 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 377 transitions. [2021-12-16 01:10:09,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 01:10:09,143 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 377 transitions. [2021-12-16 01:10:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-16 01:10:09,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:09,145 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:09,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:09,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:09,364 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1724470702, now seen corresponding path program 1 times [2021-12-16 01:10:09,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:09,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785619888] [2021-12-16 01:10:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:09,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-12-16 01:10:09,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:09,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785619888] [2021-12-16 01:10:09,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785619888] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:09,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204592371] [2021-12-16 01:10:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:09,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:09,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:09,450 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) [2021-12-16 01:10:09,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 01:10:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:09,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-12-16 01:10:09,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:09,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204592371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:09,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:09,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:09,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371948019] [2021-12-16 01:10:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:09,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:09,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:09,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:09,829 INFO L87 Difference]: Start difference. First operand 285 states and 377 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-16 01:10:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:09,850 INFO L93 Difference]: Finished difference Result 442 states and 609 transitions. [2021-12-16 01:10:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:09,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 229 [2021-12-16 01:10:09,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:09,853 INFO L225 Difference]: With dead ends: 442 [2021-12-16 01:10:09,853 INFO L226 Difference]: Without dead ends: 284 [2021-12-16 01:10:09,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:09,854 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 7 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:09,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 791 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-16 01:10:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-12-16 01:10:09,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 228 states have (on average 1.263157894736842) internal successors, (288), 231 states have internal predecessors, (288), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-16 01:10:09,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 372 transitions. [2021-12-16 01:10:09,864 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 372 transitions. Word has length 229 [2021-12-16 01:10:09,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:09,864 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 372 transitions. [2021-12-16 01:10:09,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-16 01:10:09,864 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 372 transitions. [2021-12-16 01:10:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-12-16 01:10:09,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:09,866 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:09,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:10,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:10,083 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:10,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash -88373812, now seen corresponding path program 1 times [2021-12-16 01:10:10,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:10,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844730430] [2021-12-16 01:10:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:10,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-12-16 01:10:10,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:10,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844730430] [2021-12-16 01:10:10,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844730430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:10,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:10,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:10,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299147816] [2021-12-16 01:10:10,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:10,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:10,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:10,179 INFO L87 Difference]: Start difference. First operand 284 states and 372 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-16 01:10:10,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:10,349 INFO L93 Difference]: Finished difference Result 484 states and 672 transitions. [2021-12-16 01:10:10,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:10,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 238 [2021-12-16 01:10:10,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:10,351 INFO L225 Difference]: With dead ends: 484 [2021-12-16 01:10:10,351 INFO L226 Difference]: Without dead ends: 327 [2021-12-16 01:10:10,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:10,352 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 183 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:10,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 652 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-16 01:10:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 283. [2021-12-16 01:10:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 228 states have (on average 1.2587719298245614) internal successors, (287), 230 states have internal predecessors, (287), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-16 01:10:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 369 transitions. [2021-12-16 01:10:10,360 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 369 transitions. Word has length 238 [2021-12-16 01:10:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:10,361 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 369 transitions. [2021-12-16 01:10:10,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-16 01:10:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 369 transitions. [2021-12-16 01:10:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-16 01:10:10,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:10,363 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:10,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 01:10:10,363 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:10,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:10,363 INFO L85 PathProgramCache]: Analyzing trace with hash -284812756, now seen corresponding path program 1 times [2021-12-16 01:10:10,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:10,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500155247] [2021-12-16 01:10:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:10,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-12-16 01:10:10,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:10,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500155247] [2021-12-16 01:10:10,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500155247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:10,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:10,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:10,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663000342] [2021-12-16 01:10:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:10,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:10,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:10,502 INFO L87 Difference]: Start difference. First operand 283 states and 369 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 01:10:10,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:10,844 INFO L93 Difference]: Finished difference Result 670 states and 903 transitions. [2021-12-16 01:10:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:10:10,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 241 [2021-12-16 01:10:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:10,848 INFO L225 Difference]: With dead ends: 670 [2021-12-16 01:10:10,848 INFO L226 Difference]: Without dead ends: 514 [2021-12-16 01:10:10,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:10:10,848 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 433 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:10,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 873 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-12-16 01:10:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 505. [2021-12-16 01:10:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 403 states have (on average 1.3101736972704714) internal successors, (528), 405 states have internal predecessors, (528), 70 states have call successors, (70), 31 states have call predecessors, (70), 31 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2021-12-16 01:10:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 668 transitions. [2021-12-16 01:10:10,862 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 668 transitions. Word has length 241 [2021-12-16 01:10:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:10,862 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 668 transitions. [2021-12-16 01:10:10,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 01:10:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 668 transitions. [2021-12-16 01:10:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-12-16 01:10:10,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:10,864 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:10,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 01:10:10,865 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash -571150504, now seen corresponding path program 1 times [2021-12-16 01:10:10,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:10,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420783164] [2021-12-16 01:10:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:10,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-16 01:10:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-16 01:10:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-16 01:10:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-12-16 01:10:10,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:10,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420783164] [2021-12-16 01:10:10,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420783164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:10,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:10,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:10,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455110796] [2021-12-16 01:10:10,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:10,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:10,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:10,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:10,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:10,968 INFO L87 Difference]: Start difference. First operand 505 states and 668 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-16 01:10:11,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:11,234 INFO L93 Difference]: Finished difference Result 1106 states and 1514 transitions. [2021-12-16 01:10:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:11,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 272 [2021-12-16 01:10:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:11,237 INFO L225 Difference]: With dead ends: 1106 [2021-12-16 01:10:11,237 INFO L226 Difference]: Without dead ends: 809 [2021-12-16 01:10:11,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:11,238 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 222 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:11,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 628 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:11,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2021-12-16 01:10:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 640. [2021-12-16 01:10:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 513 states have (on average 1.3177387914230019) internal successors, (676), 519 states have internal predecessors, (676), 85 states have call successors, (85), 41 states have call predecessors, (85), 41 states have return successors, (85), 81 states have call predecessors, (85), 85 states have call successors, (85) [2021-12-16 01:10:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 846 transitions. [2021-12-16 01:10:11,262 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 846 transitions. Word has length 272 [2021-12-16 01:10:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:11,262 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 846 transitions. [2021-12-16 01:10:11,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-16 01:10:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 846 transitions. [2021-12-16 01:10:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-12-16 01:10:11,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:11,265 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:11,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 01:10:11,265 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:11,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1395588113, now seen corresponding path program 1 times [2021-12-16 01:10:11,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:11,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024471166] [2021-12-16 01:10:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:11,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-16 01:10:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-16 01:10:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-16 01:10:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-16 01:10:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-12-16 01:10:11,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:11,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024471166] [2021-12-16 01:10:11,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024471166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:11,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:11,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:11,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922658590] [2021-12-16 01:10:11,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:11,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:11,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:11,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:11,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:11,363 INFO L87 Difference]: Start difference. First operand 640 states and 846 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-16 01:10:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:11,640 INFO L93 Difference]: Finished difference Result 1410 states and 1914 transitions. [2021-12-16 01:10:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:11,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 273 [2021-12-16 01:10:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:11,645 INFO L225 Difference]: With dead ends: 1410 [2021-12-16 01:10:11,645 INFO L226 Difference]: Without dead ends: 1017 [2021-12-16 01:10:11,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:11,646 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 225 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:11,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 661 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:11,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-12-16 01:10:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1003. [2021-12-16 01:10:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 796 states have (on average 1.342964824120603) internal successors, (1069), 810 states have internal predecessors, (1069), 139 states have call successors, (139), 67 states have call predecessors, (139), 67 states have return successors, (139), 129 states have call predecessors, (139), 139 states have call successors, (139) [2021-12-16 01:10:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1347 transitions. [2021-12-16 01:10:11,677 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1347 transitions. Word has length 273 [2021-12-16 01:10:11,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:11,678 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1347 transitions. [2021-12-16 01:10:11,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-16 01:10:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1347 transitions. [2021-12-16 01:10:11,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-12-16 01:10:11,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:11,680 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:11,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 01:10:11,681 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:11,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:11,681 INFO L85 PathProgramCache]: Analyzing trace with hash -898457517, now seen corresponding path program 1 times [2021-12-16 01:10:11,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:11,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896158928] [2021-12-16 01:10:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:11,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-16 01:10:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-16 01:10:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-16 01:10:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-12-16 01:10:11,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:11,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896158928] [2021-12-16 01:10:11,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896158928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:11,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:11,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:11,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479757403] [2021-12-16 01:10:11,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:11,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:11,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:11,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:11,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:11,777 INFO L87 Difference]: Start difference. First operand 1003 states and 1347 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:12,056 INFO L93 Difference]: Finished difference Result 2319 states and 3189 transitions. [2021-12-16 01:10:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:12,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 274 [2021-12-16 01:10:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:12,061 INFO L225 Difference]: With dead ends: 2319 [2021-12-16 01:10:12,061 INFO L226 Difference]: Without dead ends: 1609 [2021-12-16 01:10:12,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:12,063 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 227 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:12,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 693 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-12-16 01:10:12,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1583. [2021-12-16 01:10:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1244 states have (on average 1.367363344051447) internal successors, (1701), 1272 states have internal predecessors, (1701), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2021-12-16 01:10:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2163 transitions. [2021-12-16 01:10:12,121 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2163 transitions. Word has length 274 [2021-12-16 01:10:12,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:12,122 INFO L470 AbstractCegarLoop]: Abstraction has 1583 states and 2163 transitions. [2021-12-16 01:10:12,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2163 transitions. [2021-12-16 01:10:12,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-12-16 01:10:12,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:12,124 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:12,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 01:10:12,124 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1292824303, now seen corresponding path program 1 times [2021-12-16 01:10:12,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:12,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384374818] [2021-12-16 01:10:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:12,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-16 01:10:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-16 01:10:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-16 01:10:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2021-12-16 01:10:12,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:12,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384374818] [2021-12-16 01:10:12,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384374818] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:12,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869729282] [2021-12-16 01:10:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:12,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:12,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:12,256 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) [2021-12-16 01:10:12,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 01:10:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 01:10:12,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-12-16 01:10:12,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:12,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869729282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:12,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:12,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-16 01:10:12,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977976393] [2021-12-16 01:10:12,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:12,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:12,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:10:12,678 INFO L87 Difference]: Start difference. First operand 1583 states and 2163 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:12,764 INFO L93 Difference]: Finished difference Result 2913 states and 4038 transitions. [2021-12-16 01:10:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:12,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 274 [2021-12-16 01:10:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:12,770 INFO L225 Difference]: With dead ends: 2913 [2021-12-16 01:10:12,770 INFO L226 Difference]: Without dead ends: 1583 [2021-12-16 01:10:12,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:10:12,773 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 51 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:12,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 708 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-12-16 01:10:12,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2021-12-16 01:10:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1244 states have (on average 1.3480707395498392) internal successors, (1677), 1272 states have internal predecessors, (1677), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2021-12-16 01:10:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2139 transitions. [2021-12-16 01:10:12,814 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2139 transitions. Word has length 274 [2021-12-16 01:10:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:12,814 INFO L470 AbstractCegarLoop]: Abstraction has 1583 states and 2139 transitions. [2021-12-16 01:10:12,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:12,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2139 transitions. [2021-12-16 01:10:12,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-16 01:10:12,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:12,816 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:12,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:13,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-16 01:10:13,023 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash -78372800, now seen corresponding path program 1 times [2021-12-16 01:10:13,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:13,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130123669] [2021-12-16 01:10:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:13,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-16 01:10:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-16 01:10:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-16 01:10:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2021-12-16 01:10:13,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:13,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130123669] [2021-12-16 01:10:13,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130123669] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:13,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393812122] [2021-12-16 01:10:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:13,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:13,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:13,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:13,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 01:10:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 01:10:13,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2021-12-16 01:10:13,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:13,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393812122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:13,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:13,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-16 01:10:13,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739642968] [2021-12-16 01:10:13,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:13,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:13,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:13,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:13,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:10:13,570 INFO L87 Difference]: Start difference. First operand 1583 states and 2139 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:13,643 INFO L93 Difference]: Finished difference Result 2913 states and 3982 transitions. [2021-12-16 01:10:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:13,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 275 [2021-12-16 01:10:13,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:13,648 INFO L225 Difference]: With dead ends: 2913 [2021-12-16 01:10:13,649 INFO L226 Difference]: Without dead ends: 1631 [2021-12-16 01:10:13,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:10:13,651 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 15 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:13,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 731 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:13,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-12-16 01:10:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-12-16 01:10:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1284 states have (on average 1.3496884735202492) internal successors, (1733), 1312 states have internal predecessors, (1733), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2021-12-16 01:10:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2195 transitions. [2021-12-16 01:10:13,697 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2195 transitions. Word has length 275 [2021-12-16 01:10:13,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:13,697 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2195 transitions. [2021-12-16 01:10:13,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2195 transitions. [2021-12-16 01:10:13,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-12-16 01:10:13,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:13,699 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:13,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:13,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-16 01:10:13,917 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:13,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:13,917 INFO L85 PathProgramCache]: Analyzing trace with hash 524917483, now seen corresponding path program 1 times [2021-12-16 01:10:13,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:13,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953140057] [2021-12-16 01:10:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:13,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-16 01:10:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-16 01:10:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-16 01:10:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-12-16 01:10:14,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:14,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953140057] [2021-12-16 01:10:14,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953140057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:14,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:14,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:10:14,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622295503] [2021-12-16 01:10:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:14,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:10:14,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:14,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:10:14,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:10:14,048 INFO L87 Difference]: Start difference. First operand 1631 states and 2195 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-16 01:10:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:14,397 INFO L93 Difference]: Finished difference Result 2497 states and 3590 transitions. [2021-12-16 01:10:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:10:14,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 276 [2021-12-16 01:10:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:14,410 INFO L225 Difference]: With dead ends: 2497 [2021-12-16 01:10:14,411 INFO L226 Difference]: Without dead ends: 2495 [2021-12-16 01:10:14,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:10:14,412 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 254 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:14,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 1829 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:14,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-12-16 01:10:14,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1679. [2021-12-16 01:10:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1316 states have (on average 1.3411854103343466) internal successors, (1765), 1352 states have internal predecessors, (1765), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2021-12-16 01:10:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2243 transitions. [2021-12-16 01:10:14,484 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2243 transitions. Word has length 276 [2021-12-16 01:10:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:14,484 INFO L470 AbstractCegarLoop]: Abstraction has 1679 states and 2243 transitions. [2021-12-16 01:10:14,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-16 01:10:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2243 transitions. [2021-12-16 01:10:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-16 01:10:14,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:14,486 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:14,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-16 01:10:14,487 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:14,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1725038329, now seen corresponding path program 1 times [2021-12-16 01:10:14,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:14,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400819745] [2021-12-16 01:10:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-16 01:10:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-16 01:10:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-16 01:10:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-16 01:10:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2021-12-16 01:10:14,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:14,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400819745] [2021-12-16 01:10:14,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400819745] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:14,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758082788] [2021-12-16 01:10:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:14,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:14,684 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:14,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 01:10:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 01:10:14,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-12-16 01:10:15,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2021-12-16 01:10:15,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758082788] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:15,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:15,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2021-12-16 01:10:15,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788622610] [2021-12-16 01:10:15,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:15,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-16 01:10:15,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-16 01:10:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-16 01:10:15,682 INFO L87 Difference]: Start difference. First operand 1679 states and 2243 transitions. Second operand has 19 states, 19 states have (on average 8.263157894736842) internal successors, (157), 14 states have internal predecessors, (157), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2021-12-16 01:10:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:16,974 INFO L93 Difference]: Finished difference Result 4922 states and 7094 transitions. [2021-12-16 01:10:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 01:10:16,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.263157894736842) internal successors, (157), 14 states have internal predecessors, (157), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 284 [2021-12-16 01:10:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:16,988 INFO L225 Difference]: With dead ends: 4922 [2021-12-16 01:10:16,988 INFO L226 Difference]: Without dead ends: 3544 [2021-12-16 01:10:16,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2021-12-16 01:10:16,993 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 776 mSDsluCounter, 2846 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:16,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 3253 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 01:10:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2021-12-16 01:10:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 2498. [2021-12-16 01:10:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 1952 states have (on average 1.3288934426229508) internal successors, (2594), 2004 states have internal predecessors, (2594), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2021-12-16 01:10:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3314 transitions. [2021-12-16 01:10:17,114 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3314 transitions. Word has length 284 [2021-12-16 01:10:17,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:17,115 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 3314 transitions. [2021-12-16 01:10:17,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.263157894736842) internal successors, (157), 14 states have internal predecessors, (157), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2021-12-16 01:10:17,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3314 transitions. [2021-12-16 01:10:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-16 01:10:17,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:17,118 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:17,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:17,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:17,331 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:17,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:17,332 INFO L85 PathProgramCache]: Analyzing trace with hash -763424312, now seen corresponding path program 1 times [2021-12-16 01:10:17,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:17,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515869961] [2021-12-16 01:10:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:17,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-16 01:10:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-16 01:10:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-16 01:10:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-16 01:10:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-12-16 01:10:17,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:17,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515869961] [2021-12-16 01:10:17,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515869961] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:17,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480995643] [2021-12-16 01:10:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:17,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:17,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:17,421 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:17,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 01:10:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:17,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2021-12-16 01:10:17,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:17,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480995643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:17,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:17,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:17,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036343208] [2021-12-16 01:10:17,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:17,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:17,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:17,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:17,852 INFO L87 Difference]: Start difference. First operand 2498 states and 3314 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 01:10:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:17,958 INFO L93 Difference]: Finished difference Result 4829 states and 6504 transitions. [2021-12-16 01:10:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 284 [2021-12-16 01:10:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:17,966 INFO L225 Difference]: With dead ends: 4829 [2021-12-16 01:10:17,966 INFO L226 Difference]: Without dead ends: 2434 [2021-12-16 01:10:17,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 333 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:17,970 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 11 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:17,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 731 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2021-12-16 01:10:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2434. [2021-12-16 01:10:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 1908 states have (on average 1.3123689727463312) internal successors, (2504), 1960 states have internal predecessors, (2504), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2021-12-16 01:10:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3188 transitions. [2021-12-16 01:10:18,047 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3188 transitions. Word has length 284 [2021-12-16 01:10:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:18,047 INFO L470 AbstractCegarLoop]: Abstraction has 2434 states and 3188 transitions. [2021-12-16 01:10:18,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 01:10:18,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3188 transitions. [2021-12-16 01:10:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-16 01:10:18,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:18,051 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:18,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:18,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:18,268 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -455145673, now seen corresponding path program 1 times [2021-12-16 01:10:18,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:18,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719628980] [2021-12-16 01:10:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:18,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 01:10:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:10:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-16 01:10:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-16 01:10:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-16 01:10:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-16 01:10:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-16 01:10:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-16 01:10:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-16 01:10:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-12-16 01:10:18,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:18,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719628980] [2021-12-16 01:10:18,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719628980] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:18,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572559983] [2021-12-16 01:10:18,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:18,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:18,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:18,359 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:18,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 01:10:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:18,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2021-12-16 01:10:18,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:18,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572559983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:18,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:18,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:18,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801298072] [2021-12-16 01:10:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:18,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:18,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:18,806 INFO L87 Difference]: Start difference. First operand 2434 states and 3188 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 01:10:18,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:18,916 INFO L93 Difference]: Finished difference Result 4590 states and 6117 transitions. [2021-12-16 01:10:18,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:18,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 287 [2021-12-16 01:10:18,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:18,924 INFO L225 Difference]: With dead ends: 4590 [2021-12-16 01:10:18,925 INFO L226 Difference]: Without dead ends: 2241 [2021-12-16 01:10:18,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:18,929 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 8 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:18,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 734 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2021-12-16 01:10:18,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2241. [2021-12-16 01:10:18,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 1745 states have (on average 1.3060171919770773) internal successors, (2279), 1797 states have internal predecessors, (2279), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2021-12-16 01:10:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2925 transitions. [2021-12-16 01:10:19,003 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2925 transitions. Word has length 287 [2021-12-16 01:10:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:19,003 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 2925 transitions. [2021-12-16 01:10:19,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 01:10:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2925 transitions. [2021-12-16 01:10:19,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-12-16 01:10:19,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:19,005 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:19,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:19,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:19,218 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:19,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1145505540, now seen corresponding path program 1 times [2021-12-16 01:10:19,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:19,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182748793] [2021-12-16 01:10:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:19,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-16 01:10:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-16 01:10:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-16 01:10:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-16 01:10:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-16 01:10:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-16 01:10:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2021-12-16 01:10:19,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:19,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182748793] [2021-12-16 01:10:19,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182748793] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:19,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207146773] [2021-12-16 01:10:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:19,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:19,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:19,498 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:19,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 01:10:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 01:10:19,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-12-16 01:10:20,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:20,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207146773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:20,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:20,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2021-12-16 01:10:20,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097368203] [2021-12-16 01:10:20,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:20,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:10:20,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:20,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:10:20,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2021-12-16 01:10:20,058 INFO L87 Difference]: Start difference. First operand 2241 states and 2925 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-16 01:10:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:21,069 INFO L93 Difference]: Finished difference Result 7395 states and 10012 transitions. [2021-12-16 01:10:21,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-16 01:10:21,069 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 299 [2021-12-16 01:10:21,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:21,097 INFO L225 Difference]: With dead ends: 7395 [2021-12-16 01:10:21,105 INFO L226 Difference]: Without dead ends: 5729 [2021-12-16 01:10:21,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=2139, Unknown=0, NotChecked=0, Total=2450 [2021-12-16 01:10:21,111 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 1072 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:21,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 3101 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:10:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5729 states. [2021-12-16 01:10:21,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5729 to 4109. [2021-12-16 01:10:21,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 3181 states have (on average 1.300534423137378) internal successors, (4137), 3269 states have internal predecessors, (4137), 591 states have call successors, (591), 336 states have call predecessors, (591), 336 states have return successors, (591), 503 states have call predecessors, (591), 591 states have call successors, (591) [2021-12-16 01:10:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5319 transitions. [2021-12-16 01:10:21,277 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5319 transitions. Word has length 299 [2021-12-16 01:10:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:21,277 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5319 transitions. [2021-12-16 01:10:21,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-16 01:10:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5319 transitions. [2021-12-16 01:10:21,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-16 01:10:21,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:21,280 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:21,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:21,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-16 01:10:21,503 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1176765881, now seen corresponding path program 1 times [2021-12-16 01:10:21,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:21,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821893478] [2021-12-16 01:10:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:21,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-16 01:10:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-16 01:10:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-16 01:10:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-16 01:10:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-16 01:10:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-12-16 01:10:21,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:21,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821893478] [2021-12-16 01:10:21,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821893478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:21,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:21,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:10:21,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655942990] [2021-12-16 01:10:21,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:21,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:10:21,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:21,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:10:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:10:21,626 INFO L87 Difference]: Start difference. First operand 4109 states and 5319 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-16 01:10:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:22,220 INFO L93 Difference]: Finished difference Result 12951 states and 18626 transitions. [2021-12-16 01:10:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:10:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 305 [2021-12-16 01:10:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:22,245 INFO L225 Difference]: With dead ends: 12951 [2021-12-16 01:10:22,245 INFO L226 Difference]: Without dead ends: 9373 [2021-12-16 01:10:22,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:10:22,253 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 547 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:22,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1951 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2021-12-16 01:10:22,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 4441. [2021-12-16 01:10:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4441 states, 3453 states have (on average 1.3150883289892847) internal successors, (4541), 3541 states have internal predecessors, (4541), 651 states have call successors, (651), 336 states have call predecessors, (651), 336 states have return successors, (651), 563 states have call predecessors, (651), 651 states have call successors, (651) [2021-12-16 01:10:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 5843 transitions. [2021-12-16 01:10:22,504 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 5843 transitions. Word has length 305 [2021-12-16 01:10:22,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:22,505 INFO L470 AbstractCegarLoop]: Abstraction has 4441 states and 5843 transitions. [2021-12-16 01:10:22,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-16 01:10:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 5843 transitions. [2021-12-16 01:10:22,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-16 01:10:22,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:22,507 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:22,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-16 01:10:22,507 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:22,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:22,508 INFO L85 PathProgramCache]: Analyzing trace with hash -653649099, now seen corresponding path program 1 times [2021-12-16 01:10:22,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:22,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750807530] [2021-12-16 01:10:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:22,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-16 01:10:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-16 01:10:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-16 01:10:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-16 01:10:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-16 01:10:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-16 01:10:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-16 01:10:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2021-12-16 01:10:22,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:22,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750807530] [2021-12-16 01:10:22,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750807530] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:22,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:22,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:10:22,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197329276] [2021-12-16 01:10:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:22,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:10:22,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:10:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:22,624 INFO L87 Difference]: Start difference. First operand 4441 states and 5843 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-16 01:10:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:22,923 INFO L93 Difference]: Finished difference Result 8202 states and 10851 transitions. [2021-12-16 01:10:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:10:22,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 305 [2021-12-16 01:10:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:22,935 INFO L225 Difference]: With dead ends: 8202 [2021-12-16 01:10:22,936 INFO L226 Difference]: Without dead ends: 4373 [2021-12-16 01:10:22,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:10:22,943 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 59 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:22,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 965 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:22,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2021-12-16 01:10:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 4373. [2021-12-16 01:10:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 3396 states have (on average 1.31301531213192) internal successors, (4459), 3479 states have internal predecessors, (4459), 646 states have call successors, (646), 331 states have call predecessors, (646), 330 states have return successors, (645), 562 states have call predecessors, (645), 645 states have call successors, (645) [2021-12-16 01:10:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 5750 transitions. [2021-12-16 01:10:23,116 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 5750 transitions. Word has length 305 [2021-12-16 01:10:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:23,117 INFO L470 AbstractCegarLoop]: Abstraction has 4373 states and 5750 transitions. [2021-12-16 01:10:23,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-16 01:10:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 5750 transitions. [2021-12-16 01:10:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-16 01:10:23,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:23,122 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:23,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-16 01:10:23,122 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:23,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1527782614, now seen corresponding path program 1 times [2021-12-16 01:10:23,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:23,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652088621] [2021-12-16 01:10:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:23,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-16 01:10:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-16 01:10:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-16 01:10:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-16 01:10:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-16 01:10:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-16 01:10:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-16 01:10:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-16 01:10:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2021-12-16 01:10:23,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:23,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652088621] [2021-12-16 01:10:23,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652088621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:23,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:23,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:10:23,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832642190] [2021-12-16 01:10:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:23,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:10:23,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:10:23,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:23,217 INFO L87 Difference]: Start difference. First operand 4373 states and 5750 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-16 01:10:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:23,634 INFO L93 Difference]: Finished difference Result 8682 states and 11401 transitions. [2021-12-16 01:10:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:10:23,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 309 [2021-12-16 01:10:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:23,644 INFO L225 Difference]: With dead ends: 8682 [2021-12-16 01:10:23,644 INFO L226 Difference]: Without dead ends: 4562 [2021-12-16 01:10:23,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:10:23,650 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 389 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:23,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 511 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:23,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4562 states. [2021-12-16 01:10:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4562 to 2318. [2021-12-16 01:10:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 1820 states have (on average 1.2884615384615385) internal successors, (2345), 1864 states have internal predecessors, (2345), 326 states have call successors, (326), 172 states have call predecessors, (326), 171 states have return successors, (325), 281 states have call predecessors, (325), 325 states have call successors, (325) [2021-12-16 01:10:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2996 transitions. [2021-12-16 01:10:23,751 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2996 transitions. Word has length 309 [2021-12-16 01:10:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:23,751 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2996 transitions. [2021-12-16 01:10:23,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-16 01:10:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2996 transitions. [2021-12-16 01:10:23,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-16 01:10:23,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:23,754 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:23,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-16 01:10:23,754 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1710453480, now seen corresponding path program 1 times [2021-12-16 01:10:23,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:23,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580455974] [2021-12-16 01:10:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:23,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-16 01:10:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-16 01:10:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-16 01:10:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-16 01:10:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-16 01:10:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-16 01:10:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-16 01:10:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-16 01:10:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-12-16 01:10:23,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:23,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580455974] [2021-12-16 01:10:23,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580455974] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:23,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827952661] [2021-12-16 01:10:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:23,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:23,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:23,972 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:23,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 01:10:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 01:10:24,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 189 proven. 4 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-12-16 01:10:24,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-12-16 01:10:25,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827952661] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:25,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 01:10:25,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 10] total 21 [2021-12-16 01:10:25,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136059924] [2021-12-16 01:10:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:25,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:10:25,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:25,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:10:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:10:25,028 INFO L87 Difference]: Start difference. First operand 2318 states and 2996 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-16 01:10:26,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:26,282 INFO L93 Difference]: Finished difference Result 8047 states and 10891 transitions. [2021-12-16 01:10:26,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-16 01:10:26,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 309 [2021-12-16 01:10:26,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:26,298 INFO L225 Difference]: With dead ends: 8047 [2021-12-16 01:10:26,298 INFO L226 Difference]: Without dead ends: 6187 [2021-12-16 01:10:26,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 664 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=1378, Unknown=0, NotChecked=0, Total=1560 [2021-12-16 01:10:26,302 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 1419 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:26,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 3637 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:10:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6187 states. [2021-12-16 01:10:26,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6187 to 3189. [2021-12-16 01:10:26,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3189 states, 2487 states have (on average 1.2834740651387213) internal successors, (3192), 2555 states have internal predecessors, (3192), 470 states have call successors, (470), 232 states have call predecessors, (470), 231 states have return successors, (469), 401 states have call predecessors, (469), 469 states have call successors, (469) [2021-12-16 01:10:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4131 transitions. [2021-12-16 01:10:26,485 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4131 transitions. Word has length 309 [2021-12-16 01:10:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:26,485 INFO L470 AbstractCegarLoop]: Abstraction has 3189 states and 4131 transitions. [2021-12-16 01:10:26,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-16 01:10:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4131 transitions. [2021-12-16 01:10:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-16 01:10:26,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:26,487 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-16 01:10:26,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:26,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-16 01:10:26,706 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1035120360, now seen corresponding path program 1 times [2021-12-16 01:10:26,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:26,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788834647] [2021-12-16 01:10:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:26,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:10:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:10:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-16 01:10:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-16 01:10:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-16 01:10:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-16 01:10:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-16 01:10:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-16 01:10:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-16 01:10:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-16 01:10:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2021-12-16 01:10:26,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:26,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788834647] [2021-12-16 01:10:26,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788834647] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:26,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661513555] [2021-12-16 01:10:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:26,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:27,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:27,001 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:27,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 01:10:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 01:10:27,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 197 proven. 4 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-16 01:10:27,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-12-16 01:10:27,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661513555] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:27,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:27,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 26 [2021-12-16 01:10:27,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104845366] [2021-12-16 01:10:27,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:27,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 01:10:27,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 01:10:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-12-16 01:10:27,946 INFO L87 Difference]: Start difference. First operand 3189 states and 4131 transitions. Second operand has 26 states, 26 states have (on average 7.153846153846154) internal successors, (186), 22 states have internal predecessors, (186), 9 states have call successors, (48), 5 states have call predecessors, (48), 7 states have return successors, (47), 12 states have call predecessors, (47), 9 states have call successors, (47) [2021-12-16 01:11:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:11:01,734 INFO L93 Difference]: Finished difference Result 21311 states and 30632 transitions. [2021-12-16 01:11:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 467 states. [2021-12-16 01:11:01,735 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.153846153846154) internal successors, (186), 22 states have internal predecessors, (186), 9 states have call successors, (48), 5 states have call predecessors, (48), 7 states have return successors, (47), 12 states have call predecessors, (47), 9 states have call successors, (47) Word has length 309 [2021-12-16 01:11:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:11:01,792 INFO L225 Difference]: With dead ends: 21311 [2021-12-16 01:11:01,793 INFO L226 Difference]: Without dead ends: 18512 [2021-12-16 01:11:01,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1292 GetRequests, 802 SyntacticMatches, 2 SemanticMatches, 488 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110906 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=18737, Invalid=220873, Unknown=0, NotChecked=0, Total=239610 [2021-12-16 01:11:01,828 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 15553 mSDsluCounter, 8323 mSDsCounter, 0 mSdLazyCounter, 32783 mSolverCounterSat, 14057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15553 SdHoareTripleChecker+Valid, 8895 SdHoareTripleChecker+Invalid, 46840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14057 IncrementalHoareTripleChecker+Valid, 32783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:11:01,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15553 Valid, 8895 Invalid, 46840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14057 Valid, 32783 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2021-12-16 01:11:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18512 states. [2021-12-16 01:11:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18512 to 3634. [2021-12-16 01:11:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 2822 states have (on average 1.2710843373493976) internal successors, (3587), 2900 states have internal predecessors, (3587), 540 states have call successors, (540), 272 states have call predecessors, (540), 271 states have return successors, (539), 461 states have call predecessors, (539), 539 states have call successors, (539) [2021-12-16 01:11:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 4666 transitions. [2021-12-16 01:11:02,308 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 4666 transitions. Word has length 309 [2021-12-16 01:11:02,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:11:02,308 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 4666 transitions. [2021-12-16 01:11:02,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.153846153846154) internal successors, (186), 22 states have internal predecessors, (186), 9 states have call successors, (48), 5 states have call predecessors, (48), 7 states have return successors, (47), 12 states have call predecessors, (47), 9 states have call successors, (47) [2021-12-16 01:11:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 4666 transitions. [2021-12-16 01:11:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-12-16 01:11:02,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:11:02,311 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-16 01:11:02,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 01:11:02,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-16 01:11:02,528 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:11:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:11:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash 449466888, now seen corresponding path program 1 times [2021-12-16 01:11:02,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:11:02,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238583776] [2021-12-16 01:11:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:11:02,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:11:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:11:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:11:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:11:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:11:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:11:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:11:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:11:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:11:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:11:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:11:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:11:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:11:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:11:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:11:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:11:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:11:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-16 01:11:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-16 01:11:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:11:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:11:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-16 01:11:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-16 01:11:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-16 01:11:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-16 01:11:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-16 01:11:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-16 01:11:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-16 01:11:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-16 01:11:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-16 01:11:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:11:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2021-12-16 01:11:02,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:11:02,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238583776] [2021-12-16 01:11:02,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238583776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:11:02,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:11:02,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:11:02,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266010721] [2021-12-16 01:11:02,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:11:02,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:11:02,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:11:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:11:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:11:02,621 INFO L87 Difference]: Start difference. First operand 3634 states and 4666 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-16 01:11:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:11:03,305 INFO L93 Difference]: Finished difference Result 6578 states and 8474 transitions. [2021-12-16 01:11:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:11:03,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 322