./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 00:50:01,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:50:01,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:50:01,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:50:01,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:50:01,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:50:01,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:50:01,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:50:01,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:50:01,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:50:01,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:50:01,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:50:01,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:50:01,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:50:01,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:50:01,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:50:01,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:50:01,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:50:01,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:50:01,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:50:01,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:50:01,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:50:01,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:50:01,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:50:01,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:50:01,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:50:01,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:50:01,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:50:01,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:50:01,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:50:01,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:50:01,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:50:01,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:50:01,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:50:01,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:50:01,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:50:01,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:50:01,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:50:01,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:50:01,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:50:01,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:50:01,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 00:50:01,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:50:01,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:50:01,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:50:01,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:50:01,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:50:01,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:50:01,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:50:01,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:50:01,293 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:50:01,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:50:01,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 00:50:01,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:50:01,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:50:01,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:50:01,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:50:01,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:50:01,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:50:01,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:50:01,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:50:01,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:50:01,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:50:01,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:50:01,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:50:01,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:50:01,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:50:01,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 00:50:01,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 00:50:01,297 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:50:01,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:50:01,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:50:01,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:50:01,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 [2021-11-17 00:50:01,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:50:01,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:50:01,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:50:01,567 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:50:01,567 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:50:01,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2021-11-17 00:50:01,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5ccc6f2/86a3e26ad4a04e529bc660690651dd59/FLAG5d040783a [2021-11-17 00:50:02,351 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:50:02,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2021-11-17 00:50:02,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5ccc6f2/86a3e26ad4a04e529bc660690651dd59/FLAG5d040783a [2021-11-17 00:50:02,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5ccc6f2/86a3e26ad4a04e529bc660690651dd59 [2021-11-17 00:50:02,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:50:02,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:50:02,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:50:02,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:50:02,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:50:02,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:50:02" (1/1) ... [2021-11-17 00:50:02,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eee3f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:02, skipping insertion in model container [2021-11-17 00:50:02,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:50:02" (1/1) ... [2021-11-17 00:50:02,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:50:02,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:50:03,553 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/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2021-11-17 00:50:04,046 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-17 00:50:04,061 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:50:04,080 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:50:04,241 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/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2021-11-17 00:50:04,400 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-17 00:50:04,405 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:50:04,451 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:50:04,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04 WrapperNode [2021-11-17 00:50:04,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:50:04,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:50:04,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:50:04,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:50:04,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,622 INFO L137 Inliner]: procedures = 184, calls = 840, calls flagged for inlining = 74, calls inlined = 63, statements flattened = 2073 [2021-11-17 00:50:04,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:50:04,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:50:04,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:50:04,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:50:04,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:50:04,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:50:04,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:50:04,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:50:04,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (1/1) ... [2021-11-17 00:50:04,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:50:04,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:50:04,865 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) [2021-11-17 00:50:04,885 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 [2021-11-17 00:50:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2021-11-17 00:50:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2021-11-17 00:50:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 00:50:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 00:50:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2021-11-17 00:50:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2021-11-17 00:50:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-17 00:50:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-17 00:50:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2021-11-17 00:50:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2021-11-17 00:50:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 00:50:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 00:50:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 00:50:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-17 00:50:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-17 00:50:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2021-11-17 00:50:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2021-11-17 00:50:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-17 00:50:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-17 00:50:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2021-11-17 00:50:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2021-11-17 00:50:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:50:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:50:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2021-11-17 00:50:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2021-11-17 00:50:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2021-11-17 00:50:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2021-11-17 00:50:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2021-11-17 00:50:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2021-11-17 00:50:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2021-11-17 00:50:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2021-11-17 00:50:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-17 00:50:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-17 00:50:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 00:50:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 00:50:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2021-11-17 00:50:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2021-11-17 00:50:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2021-11-17 00:50:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2021-11-17 00:50:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-17 00:50:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-17 00:50:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-17 00:50:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-17 00:50:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 00:50:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 00:50:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 00:50:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:50:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:50:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2021-11-17 00:50:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2021-11-17 00:50:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:50:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:50:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2021-11-17 00:50:04,919 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2021-11-17 00:50:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 00:50:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 00:50:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 00:50:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 00:50:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:50:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2021-11-17 00:50:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2021-11-17 00:50:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 00:50:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 00:50:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-17 00:50:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-17 00:50:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:50:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2021-11-17 00:50:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2021-11-17 00:50:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:50:04,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:50:04,923 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-17 00:50:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-17 00:50:04,923 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-17 00:50:04,923 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2021-11-17 00:50:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2021-11-17 00:50:04,923 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-17 00:50:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-17 00:50:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:50:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-17 00:50:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-17 00:50:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-17 00:50:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-17 00:50:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-17 00:50:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 00:50:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 00:50:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 00:50:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 00:50:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2021-11-17 00:50:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2021-11-17 00:50:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2021-11-17 00:50:04,926 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2021-11-17 00:50:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-17 00:50:04,926 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-17 00:50:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2021-11-17 00:50:04,926 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2021-11-17 00:50:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-17 00:50:04,927 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-17 00:50:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:50:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:50:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-17 00:50:04,927 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-17 00:50:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-17 00:50:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-17 00:50:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2021-11-17 00:50:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2021-11-17 00:50:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2021-11-17 00:50:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2021-11-17 00:50:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2021-11-17 00:50:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2021-11-17 00:50:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-17 00:50:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-17 00:50:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-17 00:50:04,929 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-17 00:50:04,929 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-17 00:50:04,930 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-17 00:50:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 00:50:04,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 00:50:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2021-11-17 00:50:04,930 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2021-11-17 00:50:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2021-11-17 00:50:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2021-11-17 00:50:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 00:50:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2021-11-17 00:50:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2021-11-17 00:50:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 00:50:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 00:50:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-17 00:50:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-17 00:50:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:50:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:50:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2021-11-17 00:50:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2021-11-17 00:50:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2021-11-17 00:50:04,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2021-11-17 00:50:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-17 00:50:04,933 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-17 00:50:05,406 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:50:05,408 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:50:05,685 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 00:50:07,058 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:50:07,076 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:50:07,076 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-17 00:50:07,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:50:07 BoogieIcfgContainer [2021-11-17 00:50:07,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:50:07,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:50:07,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:50:07,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:50:07,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:50:02" (1/3) ... [2021-11-17 00:50:07,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c1a6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:50:07, skipping insertion in model container [2021-11-17 00:50:07,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:04" (2/3) ... [2021-11-17 00:50:07,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c1a6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:50:07, skipping insertion in model container [2021-11-17 00:50:07,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:50:07" (3/3) ... [2021-11-17 00:50:07,087 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2021-11-17 00:50:07,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:50:07,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:50:07,147 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:50:07,154 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 00:50:07,154 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:50:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 826 states, 571 states have (on average 1.3134851138353765) internal successors, (750), 588 states have internal predecessors, (750), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2021-11-17 00:50:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-17 00:50:07,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:07,229 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] [2021-11-17 00:50:07,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1130854638, now seen corresponding path program 1 times [2021-11-17 00:50:07,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:07,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40994193] [2021-11-17 00:50:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:07,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-17 00:50:07,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:07,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40994193] [2021-11-17 00:50:07,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40994193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:07,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:07,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:50:07,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235483697] [2021-11-17 00:50:07,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:07,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:50:07,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:50:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:50:07,791 INFO L87 Difference]: Start difference. First operand has 826 states, 571 states have (on average 1.3134851138353765) internal successors, (750), 588 states have internal predecessors, (750), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-17 00:50:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:11,287 INFO L93 Difference]: Finished difference Result 2630 states and 3786 transitions. [2021-11-17 00:50:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 00:50:11,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-11-17 00:50:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:11,324 INFO L225 Difference]: With dead ends: 2630 [2021-11-17 00:50:11,325 INFO L226 Difference]: Without dead ends: 1763 [2021-11-17 00:50:11,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:50:11,341 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 1572 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 4564 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:11,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1726 Valid, 4564 Invalid, 2195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [582 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-17 00:50:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-11-17 00:50:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1601. [2021-11-17 00:50:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1111 states have (on average 1.297929792979298) internal successors, (1442), 1136 states have internal predecessors, (1442), 370 states have call successors, (370), 118 states have call predecessors, (370), 119 states have return successors, (383), 368 states have call predecessors, (383), 369 states have call successors, (383) [2021-11-17 00:50:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2195 transitions. [2021-11-17 00:50:11,578 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2195 transitions. Word has length 32 [2021-11-17 00:50:11,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:11,579 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2195 transitions. [2021-11-17 00:50:11,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-17 00:50:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2195 transitions. [2021-11-17 00:50:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-17 00:50:11,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:11,588 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-17 00:50:11,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 00:50:11,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1456852114, now seen corresponding path program 1 times [2021-11-17 00:50:11,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:11,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931870438] [2021-11-17 00:50:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:11,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:11,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:11,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:11,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:50:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:50:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:11,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-17 00:50:11,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:11,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931870438] [2021-11-17 00:50:11,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931870438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:11,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:11,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:50:11,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19063856] [2021-11-17 00:50:11,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:11,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:50:11,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:50:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:50:11,801 INFO L87 Difference]: Start difference. First operand 1601 states and 2195 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-17 00:50:14,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:15,655 INFO L93 Difference]: Finished difference Result 3585 states and 5064 transitions. [2021-11-17 00:50:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 00:50:15,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2021-11-17 00:50:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:15,675 INFO L225 Difference]: With dead ends: 3585 [2021-11-17 00:50:15,675 INFO L226 Difference]: Without dead ends: 1992 [2021-11-17 00:50:15,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:50:15,687 INFO L933 BasicCegarLoop]: 1062 mSDtfsCounter, 1016 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:15,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 2448 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [824 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-17 00:50:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-11-17 00:50:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1702. [2021-11-17 00:50:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1188 states have (on average 1.2971380471380471) internal successors, (1541), 1216 states have internal predecessors, (1541), 382 states have call successors, (382), 127 states have call predecessors, (382), 131 states have return successors, (401), 380 states have call predecessors, (401), 381 states have call successors, (401) [2021-11-17 00:50:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2324 transitions. [2021-11-17 00:50:15,847 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2324 transitions. Word has length 77 [2021-11-17 00:50:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:15,848 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 2324 transitions. [2021-11-17 00:50:15,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-17 00:50:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2324 transitions. [2021-11-17 00:50:15,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-17 00:50:15,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:15,853 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:15,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 00:50:15,854 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:15,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:15,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1040348853, now seen corresponding path program 1 times [2021-11-17 00:50:15,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:15,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76409447] [2021-11-17 00:50:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:15,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:15,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:15,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-17 00:50:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:50:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:16,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-17 00:50:16,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:16,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76409447] [2021-11-17 00:50:16,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76409447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:16,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:16,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:50:16,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112196923] [2021-11-17 00:50:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:16,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:50:16,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:50:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:50:16,099 INFO L87 Difference]: Start difference. First operand 1702 states and 2324 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-17 00:50:21,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:21,092 INFO L93 Difference]: Finished difference Result 5174 states and 7332 transitions. [2021-11-17 00:50:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:50:21,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 101 [2021-11-17 00:50:21,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:21,113 INFO L225 Difference]: With dead ends: 5174 [2021-11-17 00:50:21,113 INFO L226 Difference]: Without dead ends: 3501 [2021-11-17 00:50:21,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:50:21,121 INFO L933 BasicCegarLoop]: 1195 mSDtfsCounter, 2523 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:21,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2682 Valid, 2474 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1607 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-17 00:50:21,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-11-17 00:50:21,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2946. [2021-11-17 00:50:21,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2072 states have (on average 1.2866795366795367) internal successors, (2666), 2114 states have internal predecessors, (2666), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2021-11-17 00:50:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 3953 transitions. [2021-11-17 00:50:21,290 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 3953 transitions. Word has length 101 [2021-11-17 00:50:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:21,291 INFO L470 AbstractCegarLoop]: Abstraction has 2946 states and 3953 transitions. [2021-11-17 00:50:21,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-17 00:50:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 3953 transitions. [2021-11-17 00:50:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-17 00:50:21,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:21,296 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:21,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 00:50:21,297 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2025083819, now seen corresponding path program 1 times [2021-11-17 00:50:21,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:21,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779255662] [2021-11-17 00:50:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:21,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:21,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:21,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:50:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:21,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:50:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-17 00:50:21,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:21,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779255662] [2021-11-17 00:50:21,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779255662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:21,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:21,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:50:21,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850653161] [2021-11-17 00:50:21,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:21,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:50:21,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:21,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:50:21,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:50:21,549 INFO L87 Difference]: Start difference. First operand 2946 states and 3953 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-17 00:50:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:24,967 INFO L93 Difference]: Finished difference Result 5025 states and 7069 transitions. [2021-11-17 00:50:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:50:24,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 101 [2021-11-17 00:50:24,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:24,999 INFO L225 Difference]: With dead ends: 5025 [2021-11-17 00:50:24,999 INFO L226 Difference]: Without dead ends: 3496 [2021-11-17 00:50:25,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:50:25,013 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 908 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:25,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 2436 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-17 00:50:25,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2021-11-17 00:50:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2950. [2021-11-17 00:50:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2076 states have (on average 1.2861271676300579) internal successors, (2670), 2118 states have internal predecessors, (2670), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2021-11-17 00:50:25,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3957 transitions. [2021-11-17 00:50:25,177 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3957 transitions. Word has length 101 [2021-11-17 00:50:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:25,178 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 3957 transitions. [2021-11-17 00:50:25,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-17 00:50:25,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3957 transitions. [2021-11-17 00:50:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-17 00:50:25,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:25,189 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:25,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 00:50:25,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:25,190 INFO L85 PathProgramCache]: Analyzing trace with hash -383645622, now seen corresponding path program 1 times [2021-11-17 00:50:25,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:25,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815268707] [2021-11-17 00:50:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:25,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:25,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:25,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:25,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:25,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:50:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:25,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:50:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-17 00:50:25,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:25,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815268707] [2021-11-17 00:50:25,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815268707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:25,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:25,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 00:50:25,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224802151] [2021-11-17 00:50:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:25,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 00:50:25,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 00:50:25,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:50:25,545 INFO L87 Difference]: Start difference. First operand 2950 states and 3957 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-17 00:50:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:34,246 INFO L93 Difference]: Finished difference Result 7117 states and 9910 transitions. [2021-11-17 00:50:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-17 00:50:34,246 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2021-11-17 00:50:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:34,274 INFO L225 Difference]: With dead ends: 7117 [2021-11-17 00:50:34,275 INFO L226 Difference]: Without dead ends: 4196 [2021-11-17 00:50:34,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-17 00:50:34,292 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 2286 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 7492 mSolverCounterSat, 1289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 4353 SdHoareTripleChecker+Invalid, 8781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1289 IncrementalHoareTripleChecker+Valid, 7492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:34,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2562 Valid, 4353 Invalid, 8781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1289 Valid, 7492 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-17 00:50:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2021-11-17 00:50:34,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 3490. [2021-11-17 00:50:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 2456 states have (on average 1.278501628664495) internal successors, (3140), 2506 states have internal predecessors, (3140), 752 states have call successors, (752), 276 states have call predecessors, (752), 281 states have return successors, (777), 745 states have call predecessors, (777), 751 states have call successors, (777) [2021-11-17 00:50:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 4669 transitions. [2021-11-17 00:50:34,470 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 4669 transitions. Word has length 103 [2021-11-17 00:50:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:34,471 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 4669 transitions. [2021-11-17 00:50:34,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-17 00:50:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 4669 transitions. [2021-11-17 00:50:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-17 00:50:34,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:34,478 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:34,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 00:50:34,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1730679408, now seen corresponding path program 1 times [2021-11-17 00:50:34,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:34,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696506162] [2021-11-17 00:50:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:34,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:50:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:50:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 00:50:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 00:50:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-17 00:50:34,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:34,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696506162] [2021-11-17 00:50:34,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696506162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:34,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:34,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:50:34,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671314613] [2021-11-17 00:50:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:34,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:50:34,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:50:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:50:34,789 INFO L87 Difference]: Start difference. First operand 3490 states and 4669 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-17 00:50:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:37,941 INFO L93 Difference]: Finished difference Result 7571 states and 10519 transitions. [2021-11-17 00:50:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:50:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 129 [2021-11-17 00:50:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:37,972 INFO L225 Difference]: With dead ends: 7571 [2021-11-17 00:50:37,972 INFO L226 Difference]: Without dead ends: 4110 [2021-11-17 00:50:37,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:50:37,990 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 873 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 3957 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:37,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 3957 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-17 00:50:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-11-17 00:50:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 3518. [2021-11-17 00:50:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 2476 states have (on average 1.2762520193861067) internal successors, (3160), 2528 states have internal predecessors, (3160), 752 states have call successors, (752), 276 states have call predecessors, (752), 289 states have return successors, (789), 751 states have call predecessors, (789), 751 states have call successors, (789) [2021-11-17 00:50:38,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 4701 transitions. [2021-11-17 00:50:38,209 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 4701 transitions. Word has length 129 [2021-11-17 00:50:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:38,211 INFO L470 AbstractCegarLoop]: Abstraction has 3518 states and 4701 transitions. [2021-11-17 00:50:38,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-17 00:50:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 4701 transitions. [2021-11-17 00:50:38,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-17 00:50:38,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:38,219 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:38,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 00:50:38,219 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:38,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:38,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1502778086, now seen corresponding path program 1 times [2021-11-17 00:50:38,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:38,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017207160] [2021-11-17 00:50:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:38,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:50:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:50:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:50:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:50:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:50:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:50:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-17 00:50:38,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:38,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017207160] [2021-11-17 00:50:38,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017207160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:38,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:38,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:50:38,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697184839] [2021-11-17 00:50:38,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:38,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:50:38,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:50:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:50:38,568 INFO L87 Difference]: Start difference. First operand 3518 states and 4701 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 00:50:41,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:42,796 INFO L93 Difference]: Finished difference Result 7580 states and 10454 transitions. [2021-11-17 00:50:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:50:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 150 [2021-11-17 00:50:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:42,827 INFO L225 Difference]: With dead ends: 7580 [2021-11-17 00:50:42,827 INFO L226 Difference]: Without dead ends: 4078 [2021-11-17 00:50:42,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:50:42,843 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 1875 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:42,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 1759 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-17 00:50:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2021-11-17 00:50:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3494. [2021-11-17 00:50:43,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 2454 states have (on average 1.2709861450692748) internal successors, (3119), 2506 states have internal predecessors, (3119), 750 states have call successors, (750), 276 states have call predecessors, (750), 289 states have return successors, (785), 749 states have call predecessors, (785), 749 states have call successors, (785) [2021-11-17 00:50:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 4654 transitions. [2021-11-17 00:50:43,039 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 4654 transitions. Word has length 150 [2021-11-17 00:50:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:43,040 INFO L470 AbstractCegarLoop]: Abstraction has 3494 states and 4654 transitions. [2021-11-17 00:50:43,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 00:50:43,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 4654 transitions. [2021-11-17 00:50:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-17 00:50:43,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:43,049 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:43,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 00:50:43,050 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1027987929, now seen corresponding path program 1 times [2021-11-17 00:50:43,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:43,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866609048] [2021-11-17 00:50:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:43,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:50:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:50:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:50:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:50:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:50:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:50:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-17 00:50:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-17 00:50:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-17 00:50:43,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:43,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866609048] [2021-11-17 00:50:43,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866609048] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:50:43,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570808068] [2021-11-17 00:50:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:43,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:50:43,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:50:43,507 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) [2021-11-17 00:50:43,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 00:50:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:43,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-17 00:50:43,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:50:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-17 00:50:44,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:50:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-17 00:50:45,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570808068] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-17 00:50:45,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-17 00:50:45,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 8] total 22 [2021-11-17 00:50:45,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948872788] [2021-11-17 00:50:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:45,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:50:45,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:45,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:50:45,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-11-17 00:50:45,359 INFO L87 Difference]: Start difference. First operand 3494 states and 4654 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2021-11-17 00:50:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:49,520 INFO L93 Difference]: Finished difference Result 8206 states and 11201 transitions. [2021-11-17 00:50:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 00:50:49,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 158 [2021-11-17 00:50:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:49,549 INFO L225 Difference]: With dead ends: 8206 [2021-11-17 00:50:49,549 INFO L226 Difference]: Without dead ends: 6126 [2021-11-17 00:50:49,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 336 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2021-11-17 00:50:49,560 INFO L933 BasicCegarLoop]: 1616 mSDtfsCounter, 4175 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 3818 mSolverCounterSat, 2025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 5843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2025 IncrementalHoareTripleChecker+Valid, 3818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:49,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4308 Valid, 3528 Invalid, 5843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2025 Valid, 3818 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-17 00:50:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2021-11-17 00:50:49,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 5092. [2021-11-17 00:50:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 3569 states have (on average 1.2729055757915382) internal successors, (4543), 3652 states have internal predecessors, (4543), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2021-11-17 00:50:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 6835 transitions. [2021-11-17 00:50:49,832 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 6835 transitions. Word has length 158 [2021-11-17 00:50:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:49,833 INFO L470 AbstractCegarLoop]: Abstraction has 5092 states and 6835 transitions. [2021-11-17 00:50:49,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2021-11-17 00:50:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 6835 transitions. [2021-11-17 00:50:49,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-17 00:50:49,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:49,845 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:49,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 00:50:50,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:50:50,072 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1503595608, now seen corresponding path program 1 times [2021-11-17 00:50:50,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:50,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887658330] [2021-11-17 00:50:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:50,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:50:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:50:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:50:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:50:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:50:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:50:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:50:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 00:50:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-17 00:50:50,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:50,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887658330] [2021-11-17 00:50:50,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887658330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:50,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:50,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:50:50,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129087193] [2021-11-17 00:50:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:50,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:50:50,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:50,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:50:50,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:50:50,429 INFO L87 Difference]: Start difference. First operand 5092 states and 6835 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:50:53,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:53,913 INFO L93 Difference]: Finished difference Result 9609 states and 13438 transitions. [2021-11-17 00:50:53,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:50:53,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-11-17 00:50:53,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:53,952 INFO L225 Difference]: With dead ends: 9609 [2021-11-17 00:50:53,953 INFO L226 Difference]: Without dead ends: 5931 [2021-11-17 00:50:53,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:50:53,968 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 624 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:53,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 3187 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-17 00:50:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5931 states. [2021-11-17 00:50:54,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5931 to 5090. [2021-11-17 00:50:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5090 states, 3567 states have (on average 1.271937202130642) internal successors, (4537), 3650 states have internal predecessors, (4537), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2021-11-17 00:50:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 6829 transitions. [2021-11-17 00:50:54,241 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 6829 transitions. Word has length 160 [2021-11-17 00:50:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:54,242 INFO L470 AbstractCegarLoop]: Abstraction has 5090 states and 6829 transitions. [2021-11-17 00:50:54,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:50:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 6829 transitions. [2021-11-17 00:50:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-17 00:50:54,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:54,252 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:54,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 00:50:54,252 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:54,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1513318799, now seen corresponding path program 1 times [2021-11-17 00:50:54,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:54,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540943692] [2021-11-17 00:50:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:54,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:50:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:50:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:50:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:50:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 00:50:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 00:50:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 00:50:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-17 00:50:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-17 00:50:54,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:54,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540943692] [2021-11-17 00:50:54,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540943692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:54,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:54,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:50:54,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324327891] [2021-11-17 00:50:54,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:54,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:50:54,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:54,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:50:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:50:54,647 INFO L87 Difference]: Start difference. First operand 5090 states and 6829 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:50:58,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:58,960 INFO L93 Difference]: Finished difference Result 11009 states and 15299 transitions. [2021-11-17 00:50:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 00:50:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2021-11-17 00:50:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:58,990 INFO L225 Difference]: With dead ends: 11009 [2021-11-17 00:50:58,991 INFO L226 Difference]: Without dead ends: 5971 [2021-11-17 00:50:59,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:50:59,010 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 345 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:59,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 3486 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-17 00:50:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2021-11-17 00:50:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5102. [2021-11-17 00:50:59,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 3579 states have (on average 1.2710254260966751) internal successors, (4549), 3662 states have internal predecessors, (4549), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2021-11-17 00:50:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 6841 transitions. [2021-11-17 00:50:59,273 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 6841 transitions. Word has length 162 [2021-11-17 00:50:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:59,274 INFO L470 AbstractCegarLoop]: Abstraction has 5102 states and 6841 transitions. [2021-11-17 00:50:59,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-17 00:50:59,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 6841 transitions. [2021-11-17 00:50:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-17 00:50:59,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:59,286 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:59,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 00:50:59,287 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1008301203, now seen corresponding path program 1 times [2021-11-17 00:50:59,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:59,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407475636] [2021-11-17 00:50:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:59,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:59,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:59,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:50:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:51:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:51:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:51:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:51:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:51:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 00:51:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 00:51:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-17 00:51:01,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:01,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407475636] [2021-11-17 00:51:01,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407475636] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:51:01,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11629065] [2021-11-17 00:51:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:01,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:51:01,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:51:01,504 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) [2021-11-17 00:51:01,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 00:51:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-17 00:51:01,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:51:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-17 00:51:02,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:51:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-17 00:51:04,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11629065] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:51:04,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:51:04,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 14, 12] total 57 [2021-11-17 00:51:04,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037227607] [2021-11-17 00:51:04,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:51:04,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-17 00:51:04,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:04,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-17 00:51:04,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=3035, Unknown=0, NotChecked=0, Total=3192 [2021-11-17 00:51:04,278 INFO L87 Difference]: Start difference. First operand 5102 states and 6841 transitions. Second operand has 57 states, 52 states have (on average 4.4423076923076925) internal successors, (231), 45 states have internal predecessors, (231), 14 states have call successors, (39), 5 states have call predecessors, (39), 14 states have return successors, (41), 18 states have call predecessors, (41), 14 states have call successors, (41) [2021-11-17 00:51:46,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:48,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:49,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:51,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:57,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:00,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:07,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:24,326 INFO L93 Difference]: Finished difference Result 14914 states and 21288 transitions. [2021-11-17 00:52:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-17 00:52:24,326 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 52 states have (on average 4.4423076923076925) internal successors, (231), 45 states have internal predecessors, (231), 14 states have call successors, (39), 5 states have call predecessors, (39), 14 states have return successors, (41), 18 states have call predecessors, (41), 14 states have call successors, (41) Word has length 163 [2021-11-17 00:52:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:24,371 INFO L225 Difference]: With dead ends: 14914 [2021-11-17 00:52:24,371 INFO L226 Difference]: Without dead ends: 9841 [2021-11-17 00:52:24,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8749 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1747, Invalid=29053, Unknown=0, NotChecked=0, Total=30800 [2021-11-17 00:52:24,449 INFO L933 BasicCegarLoop]: 1286 mSDtfsCounter, 5574 mSDsluCounter, 28186 mSDsCounter, 0 mSdLazyCounter, 60540 mSolverCounterSat, 4107 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5889 SdHoareTripleChecker+Valid, 29472 SdHoareTripleChecker+Invalid, 64649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 4107 IncrementalHoareTripleChecker+Valid, 60540 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:24,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5889 Valid, 29472 Invalid, 64649 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [4107 Valid, 60540 Invalid, 2 Unknown, 0 Unchecked, 70.3s Time] [2021-11-17 00:52:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2021-11-17 00:52:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 6515. [2021-11-17 00:52:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6515 states, 4560 states have (on average 1.2633771929824562) internal successors, (5761), 4665 states have internal predecessors, (5761), 1407 states have call successors, (1407), 503 states have call predecessors, (1407), 547 states have return successors, (1535), 1407 states have call predecessors, (1535), 1406 states have call successors, (1535) [2021-11-17 00:52:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6515 states to 6515 states and 8703 transitions. [2021-11-17 00:52:24,864 INFO L78 Accepts]: Start accepts. Automaton has 6515 states and 8703 transitions. Word has length 163 [2021-11-17 00:52:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:24,865 INFO L470 AbstractCegarLoop]: Abstraction has 6515 states and 8703 transitions. [2021-11-17 00:52:24,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 52 states have (on average 4.4423076923076925) internal successors, (231), 45 states have internal predecessors, (231), 14 states have call successors, (39), 5 states have call predecessors, (39), 14 states have return successors, (41), 18 states have call predecessors, (41), 14 states have call successors, (41) [2021-11-17 00:52:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 6515 states and 8703 transitions. [2021-11-17 00:52:24,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-17 00:52:24,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:24,880 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:52:24,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-17 00:52:25,095 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,SelfDestructingSolverStorable10 [2021-11-17 00:52:25,096 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:25,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1385830112, now seen corresponding path program 1 times [2021-11-17 00:52:25,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:25,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435378330] [2021-11-17 00:52:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:25,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:52:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:52:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:52:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:52:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 00:52:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:52:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 00:52:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 00:52:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-17 00:52:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-17 00:52:25,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:25,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435378330] [2021-11-17 00:52:25,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435378330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:52:25,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:52:25,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 00:52:25,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263592950] [2021-11-17 00:52:25,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:52:25,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 00:52:25,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 00:52:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:52:25,541 INFO L87 Difference]: Start difference. First operand 6515 states and 8703 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:52:28,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:30,714 INFO L93 Difference]: Finished difference Result 12689 states and 17611 transitions. [2021-11-17 00:52:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:52:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 177 [2021-11-17 00:52:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:30,749 INFO L225 Difference]: With dead ends: 12689 [2021-11-17 00:52:30,749 INFO L226 Difference]: Without dead ends: 7514 [2021-11-17 00:52:30,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-17 00:52:30,764 INFO L933 BasicCegarLoop]: 1009 mSDtfsCounter, 878 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 801 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:30,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 3592 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [801 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-17 00:52:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7514 states. [2021-11-17 00:52:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7514 to 6526. [2021-11-17 00:52:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6526 states, 4571 states have (on average 1.2627433821920806) internal successors, (5772), 4676 states have internal predecessors, (5772), 1407 states have call successors, (1407), 503 states have call predecessors, (1407), 547 states have return successors, (1535), 1407 states have call predecessors, (1535), 1406 states have call successors, (1535) [2021-11-17 00:52:31,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6526 states to 6526 states and 8714 transitions. [2021-11-17 00:52:31,143 INFO L78 Accepts]: Start accepts. Automaton has 6526 states and 8714 transitions. Word has length 177 [2021-11-17 00:52:31,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:31,144 INFO L470 AbstractCegarLoop]: Abstraction has 6526 states and 8714 transitions. [2021-11-17 00:52:31,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:52:31,144 INFO L276 IsEmpty]: Start isEmpty. Operand 6526 states and 8714 transitions. [2021-11-17 00:52:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-17 00:52:31,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:31,160 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:52:31,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 00:52:31,161 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:31,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:31,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2126858587, now seen corresponding path program 1 times [2021-11-17 00:52:31,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:31,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513022636] [2021-11-17 00:52:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:31,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:52:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:52:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:52:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:52:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 00:52:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 00:52:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 00:52:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 00:52:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-17 00:52:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-17 00:52:31,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:31,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513022636] [2021-11-17 00:52:31,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513022636] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:52:31,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666053210] [2021-11-17 00:52:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:31,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:31,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:52:31,639 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) [2021-11-17 00:52:31,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 00:52:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:32,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 00:52:32,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:52:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-17 00:52:32,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:52:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-17 00:52:33,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666053210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:52:33,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:52:33,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2021-11-17 00:52:33,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949535962] [2021-11-17 00:52:33,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:52:33,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-17 00:52:33,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-17 00:52:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:52:33,014 INFO L87 Difference]: Start difference. First operand 6526 states and 8714 transitions. Second operand has 15 states, 15 states have (on average 10.2) internal successors, (153), 10 states have internal predecessors, (153), 2 states have call successors, (38), 7 states have call predecessors, (38), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:52:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:37,799 INFO L93 Difference]: Finished difference Result 12752 states and 17710 transitions. [2021-11-17 00:52:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:52:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.2) internal successors, (153), 10 states have internal predecessors, (153), 2 states have call successors, (38), 7 states have call predecessors, (38), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2021-11-17 00:52:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:37,837 INFO L225 Difference]: With dead ends: 12752 [2021-11-17 00:52:37,838 INFO L226 Difference]: Without dead ends: 7547 [2021-11-17 00:52:37,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 385 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-11-17 00:52:37,858 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 616 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 2802 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 5139 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:37,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 5139 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2802 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-17 00:52:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7547 states. [2021-11-17 00:52:38,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7547 to 6559. [2021-11-17 00:52:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6559 states, 4604 states have (on average 1.2608601216333624) internal successors, (5805), 4709 states have internal predecessors, (5805), 1407 states have call successors, (1407), 503 states have call predecessors, (1407), 547 states have return successors, (1535), 1407 states have call predecessors, (1535), 1406 states have call successors, (1535) [2021-11-17 00:52:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 8747 transitions. [2021-11-17 00:52:38,367 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 8747 transitions. Word has length 178 [2021-11-17 00:52:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:38,367 INFO L470 AbstractCegarLoop]: Abstraction has 6559 states and 8747 transitions. [2021-11-17 00:52:38,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.2) internal successors, (153), 10 states have internal predecessors, (153), 2 states have call successors, (38), 7 states have call predecessors, (38), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:52:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 8747 transitions. [2021-11-17 00:52:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-17 00:52:38,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:38,383 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:52:38,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 00:52:38,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:38,600 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash -309314072, now seen corresponding path program 2 times [2021-11-17 00:52:38,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:38,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510702497] [2021-11-17 00:52:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:38,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:52:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:52:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:52:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:52:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:39,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 00:52:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:52:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:52:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 00:52:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:39,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 00:52:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-17 00:52:39,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:39,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510702497] [2021-11-17 00:52:39,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510702497] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:52:39,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897870513] [2021-11-17 00:52:39,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 00:52:39,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:39,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:52:39,182 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) [2021-11-17 00:52:39,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 00:52:40,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-17 00:52:40,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 00:52:40,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-17 00:52:40,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:52:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-17 00:52:40,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:52:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-17 00:52:41,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897870513] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:52:41,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:52:41,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 24 [2021-11-17 00:52:41,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092834207] [2021-11-17 00:52:41,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:52:41,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-17 00:52:41,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:41,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-17 00:52:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-11-17 00:52:41,496 INFO L87 Difference]: Start difference. First operand 6559 states and 8747 transitions. Second operand has 24 states, 24 states have (on average 6.75) internal successors, (162), 19 states have internal predecessors, (162), 2 states have call successors, (38), 7 states have call predecessors, (38), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:52:47,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:49,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:49,308 INFO L93 Difference]: Finished difference Result 12842 states and 17833 transitions. [2021-11-17 00:52:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 00:52:49,309 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 19 states have internal predecessors, (162), 2 states have call successors, (38), 7 states have call predecessors, (38), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 202 [2021-11-17 00:52:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:49,349 INFO L225 Difference]: With dead ends: 12842 [2021-11-17 00:52:49,349 INFO L226 Difference]: Without dead ends: 7613 [2021-11-17 00:52:49,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 435 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-11-17 00:52:49,370 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 904 mSDsluCounter, 5658 mSDsCounter, 0 mSdLazyCounter, 3638 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 6663 SdHoareTripleChecker+Invalid, 4467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 3638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:49,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 6663 Invalid, 4467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 3638 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-17 00:52:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2021-11-17 00:52:49,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 6625. [2021-11-17 00:52:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6625 states, 4670 states have (on average 1.2571734475374732) internal successors, (5871), 4775 states have internal predecessors, (5871), 1407 states have call successors, (1407), 503 states have call predecessors, (1407), 547 states have return successors, (1535), 1407 states have call predecessors, (1535), 1406 states have call successors, (1535) [2021-11-17 00:52:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6625 states to 6625 states and 8813 transitions. [2021-11-17 00:52:49,829 INFO L78 Accepts]: Start accepts. Automaton has 6625 states and 8813 transitions. Word has length 202 [2021-11-17 00:52:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:49,830 INFO L470 AbstractCegarLoop]: Abstraction has 6625 states and 8813 transitions. [2021-11-17 00:52:49,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 19 states have internal predecessors, (162), 2 states have call successors, (38), 7 states have call predecessors, (38), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 00:52:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6625 states and 8813 transitions. [2021-11-17 00:52:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-17 00:52:49,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:49,848 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:52:49,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 00:52:50,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:50,064 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash -587216006, now seen corresponding path program 1 times [2021-11-17 00:52:50,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:50,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891636290] [2021-11-17 00:52:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:50,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:52:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:52:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 00:52:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 00:52:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:52:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 00:52:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-17 00:52:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 00:52:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 00:52:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-17 00:52:50,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:50,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891636290] [2021-11-17 00:52:50,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891636290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:52:50,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:52:50,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:52:50,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577126699] [2021-11-17 00:52:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:52:50,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:52:50,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:50,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:52:50,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:52:50,374 INFO L87 Difference]: Start difference. First operand 6625 states and 8813 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-17 00:52:55,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:56,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:56,724 INFO L93 Difference]: Finished difference Result 12912 states and 17826 transitions. [2021-11-17 00:52:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 00:52:56,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2021-11-17 00:52:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:56,762 INFO L225 Difference]: With dead ends: 12912 [2021-11-17 00:52:56,763 INFO L226 Difference]: Without dead ends: 7709 [2021-11-17 00:52:56,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:52:56,784 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 480 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 315 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 3960 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:56,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 3960 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 2329 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-17 00:52:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7709 states. [2021-11-17 00:52:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7709 to 6661. [2021-11-17 00:52:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6661 states, 4697 states have (on average 1.258249946774537) internal successors, (5910), 4802 states have internal predecessors, (5910), 1413 states have call successors, (1413), 506 states have call predecessors, (1413), 550 states have return successors, (1541), 1413 states have call predecessors, (1541), 1412 states have call successors, (1541) [2021-11-17 00:52:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 8864 transitions. [2021-11-17 00:52:57,292 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 8864 transitions. Word has length 208 [2021-11-17 00:52:57,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:57,293 INFO L470 AbstractCegarLoop]: Abstraction has 6661 states and 8864 transitions. [2021-11-17 00:52:57,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-17 00:52:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 8864 transitions. [2021-11-17 00:52:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-17 00:52:57,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:57,314 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:52:57,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-17 00:52:57,315 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:57,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:57,315 INFO L85 PathProgramCache]: Analyzing trace with hash -743196548, now seen corresponding path program 1 times [2021-11-17 00:52:57,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:57,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438430744] [2021-11-17 00:52:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:57,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:52:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:52:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 00:52:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 00:52:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:52:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 00:52:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-17 00:52:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 00:52:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 00:52:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-17 00:52:57,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:57,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438430744] [2021-11-17 00:52:57,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438430744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:52:57,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:52:57,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 00:52:57,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573841742] [2021-11-17 00:52:57,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:52:57,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 00:52:57,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 00:52:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:52:57,617 INFO L87 Difference]: Start difference. First operand 6661 states and 8864 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-17 00:53:01,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:53:02,680 INFO L93 Difference]: Finished difference Result 14347 states and 20336 transitions. [2021-11-17 00:53:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 00:53:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2021-11-17 00:53:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:53:02,719 INFO L225 Difference]: With dead ends: 14347 [2021-11-17 00:53:02,720 INFO L226 Difference]: Without dead ends: 7741 [2021-11-17 00:53:02,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-17 00:53:02,748 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 676 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 634 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:53:02,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 3623 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1924 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-17 00:53:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7741 states. [2021-11-17 00:53:03,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7741 to 6677. [2021-11-17 00:53:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6677 states, 4705 states have (on average 1.2578108395324124) internal successors, (5918), 4818 states have internal predecessors, (5918), 1413 states have call successors, (1413), 506 states have call predecessors, (1413), 558 states have return successors, (1581), 1413 states have call predecessors, (1581), 1412 states have call successors, (1581) [2021-11-17 00:53:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6677 states to 6677 states and 8912 transitions. [2021-11-17 00:53:03,192 INFO L78 Accepts]: Start accepts. Automaton has 6677 states and 8912 transitions. Word has length 208 [2021-11-17 00:53:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:53:03,193 INFO L470 AbstractCegarLoop]: Abstraction has 6677 states and 8912 transitions. [2021-11-17 00:53:03,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-17 00:53:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 6677 states and 8912 transitions. [2021-11-17 00:53:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-17 00:53:03,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:53:03,211 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:53:03,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-17 00:53:03,211 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:53:03,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:53:03,212 INFO L85 PathProgramCache]: Analyzing trace with hash -539240044, now seen corresponding path program 1 times [2021-11-17 00:53:03,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:53:03,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056966853] [2021-11-17 00:53:03,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:53:03,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:53:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:53:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:53:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:53:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:53:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:53:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:53:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:53:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:53:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:53:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 00:53:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 00:53:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:53:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:53:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:53:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:53:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 00:53:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-17 00:53:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 00:53:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 00:53:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-17 00:53:03,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:53:03,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056966853] [2021-11-17 00:53:03,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056966853] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:53:03,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924351728] [2021-11-17 00:53:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:53:03,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:53:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:53:03,812 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) [2021-11-17 00:53:03,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 00:53:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:04,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-17 00:53:04,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:53:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-17 00:53:04,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:53:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-17 00:53:05,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924351728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:53:05,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:53:05,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 12] total 27 [2021-11-17 00:53:05,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916853535] [2021-11-17 00:53:05,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:53:05,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-17 00:53:05,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:53:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-17 00:53:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-11-17 00:53:05,676 INFO L87 Difference]: Start difference. First operand 6677 states and 8912 transitions. Second operand has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2021-11-17 00:53:11,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:53:12,909 INFO L93 Difference]: Finished difference Result 13052 states and 18166 transitions. [2021-11-17 00:53:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-17 00:53:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) Word has length 208 [2021-11-17 00:53:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:53:12,946 INFO L225 Difference]: With dead ends: 13052 [2021-11-17 00:53:12,946 INFO L226 Difference]: Without dead ends: 7801 [2021-11-17 00:53:12,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 449 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-11-17 00:53:12,967 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 696 mSDsluCounter, 14779 mSDsCounter, 0 mSdLazyCounter, 8041 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 15796 SdHoareTripleChecker+Invalid, 8605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 8041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:53:12,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 15796 Invalid, 8605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 8041 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-17 00:53:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2021-11-17 00:53:13,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 6686. [2021-11-17 00:53:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6686 states, 4714 states have (on average 1.2573186253712345) internal successors, (5927), 4824 states have internal predecessors, (5927), 1413 states have call successors, (1413), 506 states have call predecessors, (1413), 558 states have return successors, (1581), 1416 states have call predecessors, (1581), 1412 states have call successors, (1581) [2021-11-17 00:53:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6686 states to 6686 states and 8921 transitions. [2021-11-17 00:53:13,451 INFO L78 Accepts]: Start accepts. Automaton has 6686 states and 8921 transitions. Word has length 208 [2021-11-17 00:53:13,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:53:13,452 INFO L470 AbstractCegarLoop]: Abstraction has 6686 states and 8921 transitions. [2021-11-17 00:53:13,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2021-11-17 00:53:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6686 states and 8921 transitions. [2021-11-17 00:53:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-17 00:53:13,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:53:13,465 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:53:13,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 00:53:13,687 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,SelfDestructingSolverStorable16 [2021-11-17 00:53:13,688 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:53:13,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:53:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash -498245120, now seen corresponding path program 3 times [2021-11-17 00:53:13,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:53:13,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783675920] [2021-11-17 00:53:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:53:13,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:53:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:53:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:53:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:53:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:53:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 00:53:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:53:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:53:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:53:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:53:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:53:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:53:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:13,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:53:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-17 00:53:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 00:53:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 00:53:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 00:53:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:14,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 00:53:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-17 00:53:14,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:53:14,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783675920] [2021-11-17 00:53:14,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783675920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:53:14,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716810964] [2021-11-17 00:53:14,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-17 00:53:14,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:53:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:53:14,363 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) [2021-11-17 00:53:14,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-17 00:53:27,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-17 00:53:27,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 00:53:27,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-17 00:53:27,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:53:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-17 00:53:28,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:53:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-17 00:53:29,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716810964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:53:29,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:53:29,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 14] total 43 [2021-11-17 00:53:29,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122300888] [2021-11-17 00:53:29,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:53:29,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-17 00:53:29,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:53:29,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-17 00:53:29,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1444, Unknown=0, NotChecked=0, Total=1806 [2021-11-17 00:53:29,608 INFO L87 Difference]: Start difference. First operand 6686 states and 8921 transitions. Second operand has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 38 states have internal predecessors, (185), 3 states have call successors, (41), 7 states have call predecessors, (41), 5 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 00:53:42,458 WARN L227 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 68 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-17 00:53:48,932 WARN L227 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 62 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-17 00:54:10,705 WARN L227 SmtUtils]: Spent 12.25s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-17 00:54:18,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:54:19,971 INFO L93 Difference]: Finished difference Result 13180 states and 18437 transitions. [2021-11-17 00:54:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-17 00:54:19,980 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 38 states have internal predecessors, (185), 3 states have call successors, (41), 7 states have call predecessors, (41), 5 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 187 [2021-11-17 00:54:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:54:20,013 INFO L225 Difference]: With dead ends: 13180 [2021-11-17 00:54:20,013 INFO L226 Difference]: Without dead ends: 7846 [2021-11-17 00:54:20,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 384 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=758, Invalid=2434, Unknown=0, NotChecked=0, Total=3192 [2021-11-17 00:54:20,036 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1039 mSDsluCounter, 10766 mSDsCounter, 0 mSdLazyCounter, 6343 mSolverCounterSat, 950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 11770 SdHoareTripleChecker+Invalid, 7293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 6343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:54:20,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 11770 Invalid, 7293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [950 Valid, 6343 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-11-17 00:54:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7846 states. [2021-11-17 00:54:20,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7846 to 6818. [2021-11-17 00:54:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6818 states, 4846 states have (on average 1.2525794469665703) internal successors, (6070), 4956 states have internal predecessors, (6070), 1413 states have call successors, (1413), 506 states have call predecessors, (1413), 558 states have return successors, (1581), 1416 states have call predecessors, (1581), 1412 states have call successors, (1581) [2021-11-17 00:54:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6818 states to 6818 states and 9064 transitions. [2021-11-17 00:54:20,476 INFO L78 Accepts]: Start accepts. Automaton has 6818 states and 9064 transitions. Word has length 187 [2021-11-17 00:54:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:54:20,476 INFO L470 AbstractCegarLoop]: Abstraction has 6818 states and 9064 transitions. [2021-11-17 00:54:20,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 38 states have internal predecessors, (185), 3 states have call successors, (41), 7 states have call predecessors, (41), 5 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 00:54:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 6818 states and 9064 transitions. [2021-11-17 00:54:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-17 00:54:20,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:54:20,490 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:54:20,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-17 00:54:20,703 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,SelfDestructingSolverStorable17 [2021-11-17 00:54:20,704 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:54:20,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:54:20,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1383710344, now seen corresponding path program 2 times [2021-11-17 00:54:20,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:54:20,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535316753] [2021-11-17 00:54:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:54:20,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:54:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:20,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:54:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:54:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:54:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:20,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:54:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 00:54:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:54:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:54:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:54:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:54:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 00:54:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:54:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:54:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:54:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 00:54:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:54:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 00:54:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-17 00:54:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 00:54:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 00:54:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-17 00:54:21,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:54:21,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535316753] [2021-11-17 00:54:21,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535316753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:54:21,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417471732] [2021-11-17 00:54:21,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 00:54:21,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:54:21,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:54:21,382 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) [2021-11-17 00:54:21,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-17 00:54:22,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-17 00:54:22,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 00:54:22,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-17 00:54:22,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:54:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-17 00:54:22,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:54:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-17 00:54:23,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417471732] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:54:23,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:54:23,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 12] total 27 [2021-11-17 00:54:23,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876567453] [2021-11-17 00:54:23,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:54:23,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-17 00:54:23,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:54:23,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-17 00:54:23,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-11-17 00:54:23,271 INFO L87 Difference]: Start difference. First operand 6818 states and 9064 transitions. Second operand has 27 states, 26 states have (on average 6.384615384615385) internal successors, (166), 17 states have internal predecessors, (166), 5 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2021-11-17 00:54:30,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:54:31,801 INFO L93 Difference]: Finished difference Result 13310 states and 18448 transitions. [2021-11-17 00:54:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-17 00:54:31,802 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.384615384615385) internal successors, (166), 17 states have internal predecessors, (166), 5 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) Word has length 208 [2021-11-17 00:54:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:54:31,830 INFO L225 Difference]: With dead ends: 13310 [2021-11-17 00:54:31,830 INFO L226 Difference]: Without dead ends: 7954 [2021-11-17 00:54:31,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 449 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-11-17 00:54:31,849 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 431 mSDsluCounter, 14562 mSDsCounter, 0 mSdLazyCounter, 8246 mSolverCounterSat, 317 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 15572 SdHoareTripleChecker+Invalid, 8564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 8246 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:54:31,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 15572 Invalid, 8564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 8246 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-11-17 00:54:31,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2021-11-17 00:54:32,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 6827. [2021-11-17 00:54:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6827 states, 4855 states have (on average 1.2521112255406797) internal successors, (6079), 4962 states have internal predecessors, (6079), 1413 states have call successors, (1413), 506 states have call predecessors, (1413), 558 states have return successors, (1581), 1419 states have call predecessors, (1581), 1412 states have call successors, (1581) [2021-11-17 00:54:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6827 states to 6827 states and 9073 transitions. [2021-11-17 00:54:32,316 INFO L78 Accepts]: Start accepts. Automaton has 6827 states and 9073 transitions. Word has length 208 [2021-11-17 00:54:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:54:32,317 INFO L470 AbstractCegarLoop]: Abstraction has 6827 states and 9073 transitions. [2021-11-17 00:54:32,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.384615384615385) internal successors, (166), 17 states have internal predecessors, (166), 5 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2021-11-17 00:54:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6827 states and 9073 transitions. [2021-11-17 00:54:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-17 00:54:32,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:54:32,332 INFO L514 BasicCegarLoop]: trace histogram [16, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:54:32,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-17 00:54:32,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:54:32,560 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:54:32,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:54:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash -624497240, now seen corresponding path program 4 times [2021-11-17 00:54:32,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:54:32,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784449741] [2021-11-17 00:54:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:54:32,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:54:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:54:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:32,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:54:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:54:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:54:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:54:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:32,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:54:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:32,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:54:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:54:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:54:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:54:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:54:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:54:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:54:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 00:54:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 00:54:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 00:54:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 00:54:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-17 00:54:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:54:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 00:54:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-17 00:54:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:54:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-17 00:54:33,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:54:33,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784449741] [2021-11-17 00:54:33,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784449741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:54:33,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878361249] [2021-11-17 00:54:33,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-17 00:54:33,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:54:33,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:54:33,572 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) [2021-11-17 00:54:33,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-17 00:54:40,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-17 00:54:40,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 00:54:40,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-17 00:54:40,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:54:40,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-17 00:55:47,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 Killed by 15