./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.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 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:06:37,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:06:37,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:06:37,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:06:37,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:06:37,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:06:37,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:06:37,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:06:37,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:06:37,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:06:37,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:06:37,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:06:37,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:06:37,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:06:37,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:06:37,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:06:37,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:06:37,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:06:37,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:06:37,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:06:37,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:06:37,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:06:37,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:06:37,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:06:37,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:06:37,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:06:37,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:06:37,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:06:37,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:06:37,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:06:37,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:06:37,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:06:37,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:06:37,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:06:37,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:06:37,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:06:37,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:06:37,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:06:37,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:06:37,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:06:37,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:06:37,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:06:37,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:06:37,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:06:37,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:06:37,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:06:37,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:06:37,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:06:37,726 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:06:37,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:06:37,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:06:37,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:06:37,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:06:37,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:06:37,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:06:37,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:06:37,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:06:37,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:06:37,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:06:37,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:06:37,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:06:37,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:06:37,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:06:37,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:06:37,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:06:37,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:06:37,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:06:37,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:06:37,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:06:37,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:06:37,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:06:37,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2021-11-06 19:06:37,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:06:37,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:06:37,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:06:37,945 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:06:37,946 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:06:37,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-06 19:06:37,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a962247/43210295f7804f86abe593eb1790724b/FLAGf35dd9858 [2021-11-06 19:06:38,596 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:06:38,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-06 19:06:38,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a962247/43210295f7804f86abe593eb1790724b/FLAGf35dd9858 [2021-11-06 19:06:38,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a962247/43210295f7804f86abe593eb1790724b [2021-11-06 19:06:38,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:06:38,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:06:38,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:06:38,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:06:38,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:06:38,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:06:38" (1/1) ... [2021-11-06 19:06:38,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f3c1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:38, skipping insertion in model container [2021-11-06 19:06:38,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:06:38" (1/1) ... [2021-11-06 19:06:38,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:06:38,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:06:40,220 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-06 19:06:40,222 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-06 19:06:40,222 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-06 19:06:40,222 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-06 19:06:40,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:06:40,279 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:06:40,592 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-06 19:06:40,593 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-06 19:06:40,593 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-06 19:06:40,593 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-06 19:06:40,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:06:40,720 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:06:40,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40 WrapperNode [2021-11-06 19:06:40,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:06:40,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:06:40,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:06:40,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:06:40,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:40,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:41,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:06:41,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:06:41,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:06:41,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:06:41,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:41,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:41,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:41,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:41,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:41,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:41,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:41,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:06:41,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:06:41,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:06:41,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:06:41,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (1/1) ... [2021-11-06 19:06:41,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:06:41,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:06:41,584 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) [2021-11-06 19:06:41,651 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 [2021-11-06 19:06:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:06:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:06:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:06:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:06:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:06:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:06:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:06:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:06:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:06:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:06:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:06:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:06:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:06:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:06:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2021-11-06 19:06:46,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:06:46,460 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:06:46,460 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:06:46,460 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:06:46,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:06:46,477 INFO L299 CfgBuilder]: Removed 3189 assume(true) statements. [2021-11-06 19:06:46,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:06:46 BoogieIcfgContainer [2021-11-06 19:06:46,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:06:46,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:06:46,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:06:46,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:06:46,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:06:38" (1/3) ... [2021-11-06 19:06:46,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bcb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:06:46, skipping insertion in model container [2021-11-06 19:06:46,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:06:40" (2/3) ... [2021-11-06 19:06:46,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bcb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:06:46, skipping insertion in model container [2021-11-06 19:06:46,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:06:46" (3/3) ... [2021-11-06 19:06:46,485 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-06 19:06:46,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:06:46,488 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 137 error locations. [2021-11-06 19:06:46,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:06:46,525 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 [2021-11-06 19:06:46,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 137 error locations. [2021-11-06 19:06:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 2946 states, 2809 states have (on average 1.3595585617657528) internal successors, (3819), 2945 states have internal predecessors, (3819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 19:06:46,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:46,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:46,561 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:06:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1954461346, now seen corresponding path program 1 times [2021-11-06 19:06:46,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:46,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919369723] [2021-11-06 19:06:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:46,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:46,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:46,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919369723] [2021-11-06 19:06:46,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919369723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:46,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:46,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:46,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845913258] [2021-11-06 19:06:46,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:46,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:46,955 INFO L87 Difference]: Start difference. First operand has 2946 states, 2809 states have (on average 1.3595585617657528) internal successors, (3819), 2945 states have internal predecessors, (3819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:47,661 INFO L93 Difference]: Finished difference Result 8502 states and 11035 transitions. [2021-11-06 19:06:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:47,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-06 19:06:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:47,685 INFO L225 Difference]: With dead ends: 8502 [2021-11-06 19:06:47,686 INFO L226 Difference]: Without dead ends: 5262 [2021-11-06 19:06:47,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2021-11-06 19:06:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 5066. [2021-11-06 19:06:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5066 states, 4929 states have (on average 1.2663826333941977) internal successors, (6242), 5065 states have internal predecessors, (6242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5066 states to 5066 states and 6242 transitions. [2021-11-06 19:06:47,814 INFO L78 Accepts]: Start accepts. Automaton has 5066 states and 6242 transitions. Word has length 33 [2021-11-06 19:06:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:47,815 INFO L470 AbstractCegarLoop]: Abstraction has 5066 states and 6242 transitions. [2021-11-06 19:06:47,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5066 states and 6242 transitions. [2021-11-06 19:06:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 19:06:47,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:47,817 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:47,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:06:47,817 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:06:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash -176422703, now seen corresponding path program 1 times [2021-11-06 19:06:47,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:47,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724769388] [2021-11-06 19:06:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:47,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:47,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:47,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724769388] [2021-11-06 19:06:47,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724769388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:47,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:47,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:47,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111812279] [2021-11-06 19:06:47,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:47,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:47,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:47,904 INFO L87 Difference]: Start difference. First operand 5066 states and 6242 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:48,588 INFO L93 Difference]: Finished difference Result 10118 states and 12531 transitions. [2021-11-06 19:06:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:48,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-06 19:06:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:48,602 INFO L225 Difference]: With dead ends: 10118 [2021-11-06 19:06:48,602 INFO L226 Difference]: Without dead ends: 5096 [2021-11-06 19:06:48,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5096 states. [2021-11-06 19:06:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5096 to 4966. [2021-11-06 19:06:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4829 states have (on average 1.285773452060468) internal successors, (6209), 4965 states have internal predecessors, (6209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 6209 transitions. [2021-11-06 19:06:48,682 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 6209 transitions. Word has length 36 [2021-11-06 19:06:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:48,682 INFO L470 AbstractCegarLoop]: Abstraction has 4966 states and 6209 transitions. [2021-11-06 19:06:48,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 6209 transitions. [2021-11-06 19:06:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 19:06:48,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:48,684 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:48,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:06:48,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:06:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:48,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1802019258, now seen corresponding path program 1 times [2021-11-06 19:06:48,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:48,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212802376] [2021-11-06 19:06:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:48,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:48,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:48,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212802376] [2021-11-06 19:06:48,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212802376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:48,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:48,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:48,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974877367] [2021-11-06 19:06:48,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:48,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:48,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:48,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:48,751 INFO L87 Difference]: Start difference. First operand 4966 states and 6209 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:49,375 INFO L93 Difference]: Finished difference Result 12249 states and 15224 transitions. [2021-11-06 19:06:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:49,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-06 19:06:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:49,394 INFO L225 Difference]: With dead ends: 12249 [2021-11-06 19:06:49,394 INFO L226 Difference]: Without dead ends: 7327 [2021-11-06 19:06:49,400 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:49,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2021-11-06 19:06:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 6977. [2021-11-06 19:06:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6977 states, 6840 states have (on average 1.2845029239766081) internal successors, (8786), 6976 states have internal predecessors, (8786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 8786 transitions. [2021-11-06 19:06:49,514 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 8786 transitions. Word has length 40 [2021-11-06 19:06:49,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:49,514 INFO L470 AbstractCegarLoop]: Abstraction has 6977 states and 8786 transitions. [2021-11-06 19:06:49,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 8786 transitions. [2021-11-06 19:06:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 19:06:49,516 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:49,516 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:49,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:06:49,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:06:49,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash -541025864, now seen corresponding path program 1 times [2021-11-06 19:06:49,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:49,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589147232] [2021-11-06 19:06:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:49,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:49,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:49,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589147232] [2021-11-06 19:06:49,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589147232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:49,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:49,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:49,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874959618] [2021-11-06 19:06:49,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:49,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:49,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:49,583 INFO L87 Difference]: Start difference. First operand 6977 states and 8786 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:50,025 INFO L93 Difference]: Finished difference Result 19376 states and 24300 transitions. [2021-11-06 19:06:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:50,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-06 19:06:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:50,071 INFO L225 Difference]: With dead ends: 19376 [2021-11-06 19:06:50,071 INFO L226 Difference]: Without dead ends: 12443 [2021-11-06 19:06:50,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12443 states. [2021-11-06 19:06:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12443 to 11985. [2021-11-06 19:06:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11985 states, 11848 states have (on average 1.2800472653612425) internal successors, (15166), 11984 states have internal predecessors, (15166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11985 states to 11985 states and 15166 transitions. [2021-11-06 19:06:50,378 INFO L78 Accepts]: Start accepts. Automaton has 11985 states and 15166 transitions. Word has length 42 [2021-11-06 19:06:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:50,379 INFO L470 AbstractCegarLoop]: Abstraction has 11985 states and 15166 transitions. [2021-11-06 19:06:50,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 11985 states and 15166 transitions. [2021-11-06 19:06:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 19:06:50,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:50,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:50,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:06:50,382 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr123ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:06:50,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash -229544855, now seen corresponding path program 1 times [2021-11-06 19:06:50,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:50,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585729083] [2021-11-06 19:06:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:50,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:50,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:50,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585729083] [2021-11-06 19:06:50,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585729083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:50,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:50,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:50,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155608995] [2021-11-06 19:06:50,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:50,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:50,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:50,474 INFO L87 Difference]: Start difference. First operand 11985 states and 15166 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:51,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:51,547 INFO L93 Difference]: Finished difference Result 33107 states and 41844 transitions. [2021-11-06 19:06:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:51,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 19:06:51,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:51,593 INFO L225 Difference]: With dead ends: 33107 [2021-11-06 19:06:51,594 INFO L226 Difference]: Without dead ends: 21166 [2021-11-06 19:06:51,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:51,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21166 states. [2021-11-06 19:06:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21166 to 20768. [2021-11-06 19:06:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20768 states, 20631 states have (on average 1.2750230236052542) internal successors, (26305), 20767 states have internal predecessors, (26305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20768 states to 20768 states and 26305 transitions. [2021-11-06 19:06:52,154 INFO L78 Accepts]: Start accepts. Automaton has 20768 states and 26305 transitions. Word has length 44 [2021-11-06 19:06:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:52,155 INFO L470 AbstractCegarLoop]: Abstraction has 20768 states and 26305 transitions. [2021-11-06 19:06:52,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 20768 states and 26305 transitions. [2021-11-06 19:06:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 19:06:52,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:52,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:52,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:06:52,160 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:06:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1545664541, now seen corresponding path program 1 times [2021-11-06 19:06:52,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:52,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326799282] [2021-11-06 19:06:52,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:52,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:52,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:52,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326799282] [2021-11-06 19:06:52,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326799282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:52,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:52,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:52,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957610873] [2021-11-06 19:06:52,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:52,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:52,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:52,258 INFO L87 Difference]: Start difference. First operand 20768 states and 26305 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:53,327 INFO L93 Difference]: Finished difference Result 59416 states and 75265 transitions. [2021-11-06 19:06:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:53,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 19:06:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:53,403 INFO L225 Difference]: With dead ends: 59416 [2021-11-06 19:06:53,404 INFO L226 Difference]: Without dead ends: 38692 [2021-11-06 19:06:53,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38692 states. [2021-11-06 19:06:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38692 to 38274. [2021-11-06 19:06:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38274 states, 38137 states have (on average 1.2708131211159766) internal successors, (48465), 38273 states have internal predecessors, (48465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 48465 transitions. [2021-11-06 19:06:54,363 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 48465 transitions. Word has length 45 [2021-11-06 19:06:54,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:54,365 INFO L470 AbstractCegarLoop]: Abstraction has 38274 states and 48465 transitions. [2021-11-06 19:06:54,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:54,367 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 48465 transitions. [2021-11-06 19:06:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 19:06:54,368 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:54,368 INFO L513 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] [2021-11-06 19:06:54,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:06:54,369 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:06:54,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1862821480, now seen corresponding path program 1 times [2021-11-06 19:06:54,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:54,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600031742] [2021-11-06 19:06:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:54,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:54,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:54,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600031742] [2021-11-06 19:06:54,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600031742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:54,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:54,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:54,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918941180] [2021-11-06 19:06:54,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:54,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:54,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:54,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:54,469 INFO L87 Difference]: Start difference. First operand 38274 states and 48465 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:55,141 INFO L93 Difference]: Finished difference Result 76496 states and 96898 transitions. [2021-11-06 19:06:55,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:55,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 19:06:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:55,321 INFO L225 Difference]: With dead ends: 76496 [2021-11-06 19:06:55,322 INFO L226 Difference]: Without dead ends: 38338 [2021-11-06 19:06:55,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:55,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38338 states. [2021-11-06 19:06:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38338 to 38306. [2021-11-06 19:06:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38306 states, 38169 states have (on average 1.2705860777070397) internal successors, (48497), 38305 states have internal predecessors, (48497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38306 states to 38306 states and 48497 transitions. [2021-11-06 19:06:56,199 INFO L78 Accepts]: Start accepts. Automaton has 38306 states and 48497 transitions. Word has length 65 [2021-11-06 19:06:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:56,200 INFO L470 AbstractCegarLoop]: Abstraction has 38306 states and 48497 transitions. [2021-11-06 19:06:56,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 38306 states and 48497 transitions. [2021-11-06 19:06:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 19:06:56,204 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:56,204 INFO L513 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] [2021-11-06 19:06:56,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:06:56,204 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:06:56,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:56,205 INFO L85 PathProgramCache]: Analyzing trace with hash 723518932, now seen corresponding path program 1 times [2021-11-06 19:06:56,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:56,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755943297] [2021-11-06 19:06:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:56,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:06:56,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:56,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755943297] [2021-11-06 19:06:56,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755943297] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 19:06:56,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403725611] [2021-11-06 19:06:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:56,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:06:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:06:56,287 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) [2021-11-06 19:06:56,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 19:06:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:57,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 19:06:57,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 19:06:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 19:06:57,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403725611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:57,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 19:06:57,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 19:06:57,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726199246] [2021-11-06 19:06:57,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:57,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:57,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:06:57,285 INFO L87 Difference]: Start difference. First operand 38306 states and 48497 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:58,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:58,810 INFO L93 Difference]: Finished difference Result 113460 states and 143884 transitions. [2021-11-06 19:06:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:58,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 19:06:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:58,965 INFO L225 Difference]: With dead ends: 113460 [2021-11-06 19:06:58,965 INFO L226 Difference]: Without dead ends: 75270 [2021-11-06 19:06:59,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:06:59,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75270 states. [2021-11-06 19:07:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75270 to 75074. [2021-11-06 19:07:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75074 states, 74937 states have (on average 1.2715881340325874) internal successors, (95289), 75073 states have internal predecessors, (95289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75074 states to 75074 states and 95289 transitions. [2021-11-06 19:07:00,780 INFO L78 Accepts]: Start accepts. Automaton has 75074 states and 95289 transitions. Word has length 67 [2021-11-06 19:07:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:00,780 INFO L470 AbstractCegarLoop]: Abstraction has 75074 states and 95289 transitions. [2021-11-06 19:07:00,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 75074 states and 95289 transitions. [2021-11-06 19:07:00,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 19:07:00,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:00,782 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:00,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 19:07:01,016 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 [2021-11-06 19:07:01,017 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:07:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1616038185, now seen corresponding path program 1 times [2021-11-06 19:07:01,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:01,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913019014] [2021-11-06 19:07:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:01,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:01,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:01,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913019014] [2021-11-06 19:07:01,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913019014] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 19:07:01,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049731958] [2021-11-06 19:07:01,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:01,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:07:01,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:07:01,101 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) [2021-11-06 19:07:01,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 19:07:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:01,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 19:07:01,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 19:07:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 19:07:01,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049731958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:01,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 19:07:01,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 19:07:01,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128853429] [2021-11-06 19:07:01,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:01,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:01,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:01,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:01,832 INFO L87 Difference]: Start difference. First operand 75074 states and 95289 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:03,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:03,124 INFO L93 Difference]: Finished difference Result 128012 states and 162142 transitions. [2021-11-06 19:07:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:03,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 19:07:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:03,232 INFO L225 Difference]: With dead ends: 128012 [2021-11-06 19:07:03,233 INFO L226 Difference]: Without dead ends: 53054 [2021-11-06 19:07:03,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53054 states. [2021-11-06 19:07:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53054 to 52886. [2021-11-06 19:07:04,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52886 states, 52749 states have (on average 1.2666969989952417) internal successors, (66817), 52885 states have internal predecessors, (66817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:04,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52886 states to 52886 states and 66817 transitions. [2021-11-06 19:07:04,654 INFO L78 Accepts]: Start accepts. Automaton has 52886 states and 66817 transitions. Word has length 68 [2021-11-06 19:07:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:04,655 INFO L470 AbstractCegarLoop]: Abstraction has 52886 states and 66817 transitions. [2021-11-06 19:07:04,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand 52886 states and 66817 transitions. [2021-11-06 19:07:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 19:07:04,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:04,656 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:04,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 19:07:04,879 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,SelfDestructingSolverStorable8 [2021-11-06 19:07:04,880 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:07:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:04,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1657860757, now seen corresponding path program 1 times [2021-11-06 19:07:04,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:04,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155983103] [2021-11-06 19:07:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:04,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:04,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:04,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155983103] [2021-11-06 19:07:04,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155983103] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 19:07:04,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958646787] [2021-11-06 19:07:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:04,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:07:04,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:07:04,999 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) [2021-11-06 19:07:05,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 19:07:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:05,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 19:07:05,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 19:07:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:07:05,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958646787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 19:07:05,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 19:07:05,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 19:07:05,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589301866] [2021-11-06 19:07:05,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 19:07:05,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:05,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 19:07:05,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:05,741 INFO L87 Difference]: Start difference. First operand 52886 states and 66817 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:06,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:06,961 INFO L93 Difference]: Finished difference Result 105680 states and 133538 transitions. [2021-11-06 19:07:06,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:06,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 19:07:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:07,067 INFO L225 Difference]: With dead ends: 105680 [2021-11-06 19:07:07,068 INFO L226 Difference]: Without dead ends: 52910 [2021-11-06 19:07:07,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:07,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52910 states. [2021-11-06 19:07:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52910 to 52902. [2021-11-06 19:07:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52902 states, 52765 states have (on average 1.266616128115228) internal successors, (66833), 52901 states have internal predecessors, (66833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52902 states to 52902 states and 66833 transitions. [2021-11-06 19:07:08,267 INFO L78 Accepts]: Start accepts. Automaton has 52902 states and 66833 transitions. Word has length 68 [2021-11-06 19:07:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:08,268 INFO L470 AbstractCegarLoop]: Abstraction has 52902 states and 66833 transitions. [2021-11-06 19:07:08,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 52902 states and 66833 transitions. [2021-11-06 19:07:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 19:07:08,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:08,269 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:08,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 19:07:08,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 19:07:08,490 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:07:08,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash -388215591, now seen corresponding path program 2 times [2021-11-06 19:07:08,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:08,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936932528] [2021-11-06 19:07:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:08,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 19:07:08,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:08,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936932528] [2021-11-06 19:07:08,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936932528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:08,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:08,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:08,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382668686] [2021-11-06 19:07:08,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:08,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:08,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:08,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:08,610 INFO L87 Difference]: Start difference. First operand 52902 states and 66833 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:09,739 INFO L93 Difference]: Finished difference Result 52902 states and 66833 transitions. [2021-11-06 19:07:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:09,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-06 19:07:09,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:09,835 INFO L225 Difference]: With dead ends: 52902 [2021-11-06 19:07:09,835 INFO L226 Difference]: Without dead ends: 52896 [2021-11-06 19:07:09,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:09,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52896 states. [2021-11-06 19:07:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52896 to 52896. [2021-11-06 19:07:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52896 states, 52762 states have (on average 1.2665744285660134) internal successors, (66827), 52895 states have internal predecessors, (66827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52896 states to 52896 states and 66827 transitions. [2021-11-06 19:07:11,086 INFO L78 Accepts]: Start accepts. Automaton has 52896 states and 66827 transitions. Word has length 70 [2021-11-06 19:07:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:11,086 INFO L470 AbstractCegarLoop]: Abstraction has 52896 states and 66827 transitions. [2021-11-06 19:07:11,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 52896 states and 66827 transitions. [2021-11-06 19:07:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 19:07:11,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:11,088 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:11,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:07:11,088 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:07:11,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:11,089 INFO L85 PathProgramCache]: Analyzing trace with hash 587115932, now seen corresponding path program 1 times [2021-11-06 19:07:11,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:11,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236120909] [2021-11-06 19:07:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:11,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 19:07:11,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:11,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236120909] [2021-11-06 19:07:11,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236120909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:11,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:11,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:11,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213595185] [2021-11-06 19:07:11,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:11,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:11,198 INFO L87 Difference]: Start difference. First operand 52896 states and 66827 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:12,263 INFO L93 Difference]: Finished difference Result 52896 states and 66827 transitions. [2021-11-06 19:07:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:12,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 19:07:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:12,351 INFO L225 Difference]: With dead ends: 52896 [2021-11-06 19:07:12,352 INFO L226 Difference]: Without dead ends: 52890 [2021-11-06 19:07:12,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52890 states. [2021-11-06 19:07:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52890 to 52890. [2021-11-06 19:07:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52890 states, 52759 states have (on average 1.2665327242745315) internal successors, (66821), 52889 states have internal predecessors, (66821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52890 states to 52890 states and 66821 transitions. [2021-11-06 19:07:13,687 INFO L78 Accepts]: Start accepts. Automaton has 52890 states and 66821 transitions. Word has length 72 [2021-11-06 19:07:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:13,687 INFO L470 AbstractCegarLoop]: Abstraction has 52890 states and 66821 transitions. [2021-11-06 19:07:13,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 52890 states and 66821 transitions. [2021-11-06 19:07:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 19:07:13,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:13,689 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:13,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 19:07:13,689 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:07:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1577839327, now seen corresponding path program 1 times [2021-11-06 19:07:13,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:13,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934995090] [2021-11-06 19:07:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:13,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 19:07:13,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:13,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934995090] [2021-11-06 19:07:13,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934995090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:13,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:13,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:13,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311617174] [2021-11-06 19:07:13,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:13,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:13,782 INFO L87 Difference]: Start difference. First operand 52890 states and 66821 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:14,883 INFO L93 Difference]: Finished difference Result 52890 states and 66821 transitions. [2021-11-06 19:07:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:14,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 19:07:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:14,971 INFO L225 Difference]: With dead ends: 52890 [2021-11-06 19:07:14,971 INFO L226 Difference]: Without dead ends: 52884 [2021-11-06 19:07:14,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:15,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52884 states. [2021-11-06 19:07:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52884 to 52884. [2021-11-06 19:07:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52884 states, 52756 states have (on average 1.2664910152399727) internal successors, (66815), 52883 states have internal predecessors, (66815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52884 states to 52884 states and 66815 transitions. [2021-11-06 19:07:16,359 INFO L78 Accepts]: Start accepts. Automaton has 52884 states and 66815 transitions. Word has length 74 [2021-11-06 19:07:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:16,359 INFO L470 AbstractCegarLoop]: Abstraction has 52884 states and 66815 transitions. [2021-11-06 19:07:16,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand 52884 states and 66815 transitions. [2021-11-06 19:07:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 19:07:16,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:16,361 INFO L513 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] [2021-11-06 19:07:16,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 19:07:16,362 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:07:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:16,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1908043462, now seen corresponding path program 1 times [2021-11-06 19:07:16,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:16,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071565219] [2021-11-06 19:07:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:16,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 19:07:16,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:16,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071565219] [2021-11-06 19:07:16,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071565219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:16,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:16,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:16,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558637925] [2021-11-06 19:07:16,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:07:16,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:16,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:07:16,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:16,488 INFO L87 Difference]: Start difference. First operand 52884 states and 66815 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:18,873 INFO L93 Difference]: Finished difference Result 118296 states and 150227 transitions. [2021-11-06 19:07:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:07:18,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-06 19:07:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:19,016 INFO L225 Difference]: With dead ends: 118296 [2021-11-06 19:07:19,017 INFO L226 Difference]: Without dead ends: 65528 [2021-11-06 19:07:19,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:07:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65528 states. [2021-11-06 19:07:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65528 to 65392. [2021-11-06 19:07:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65392 states, 65264 states have (on average 1.2732746996812945) internal successors, (83099), 65391 states have internal predecessors, (83099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65392 states to 65392 states and 83099 transitions. [2021-11-06 19:07:21,006 INFO L78 Accepts]: Start accepts. Automaton has 65392 states and 83099 transitions. Word has length 75 [2021-11-06 19:07:21,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:21,006 INFO L470 AbstractCegarLoop]: Abstraction has 65392 states and 83099 transitions. [2021-11-06 19:07:21,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:21,006 INFO L276 IsEmpty]: Start isEmpty. Operand 65392 states and 83099 transitions. [2021-11-06 19:07:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 19:07:21,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:21,007 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:21,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 19:07:21,008 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:07:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash 180282530, now seen corresponding path program 1 times [2021-11-06 19:07:21,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:21,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448550550] [2021-11-06 19:07:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:21,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 19:07:21,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:21,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448550550] [2021-11-06 19:07:21,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448550550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:21,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:21,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:21,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089615381] [2021-11-06 19:07:21,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:21,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:21,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:21,180 INFO L87 Difference]: Start difference. First operand 65392 states and 83099 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:07:22,768 INFO L93 Difference]: Finished difference Result 65392 states and 83099 transitions. [2021-11-06 19:07:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:07:22,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 19:07:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:07:22,985 INFO L225 Difference]: With dead ends: 65392 [2021-11-06 19:07:22,985 INFO L226 Difference]: Without dead ends: 65386 [2021-11-06 19:07:23,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:07:23,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65386 states. [2021-11-06 19:07:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65386 to 65386. [2021-11-06 19:07:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65386 states, 65261 states have (on average 1.2732412926556442) internal successors, (83093), 65385 states have internal predecessors, (83093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65386 states to 65386 states and 83093 transitions. [2021-11-06 19:07:24,671 INFO L78 Accepts]: Start accepts. Automaton has 65386 states and 83093 transitions. Word has length 76 [2021-11-06 19:07:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:07:24,671 INFO L470 AbstractCegarLoop]: Abstraction has 65386 states and 83093 transitions. [2021-11-06 19:07:24,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:07:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 65386 states and 83093 transitions. [2021-11-06 19:07:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 19:07:24,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:07:24,673 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:07:24,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 19:07:24,673 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-06 19:07:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:07:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1452964581, now seen corresponding path program 1 times [2021-11-06 19:07:24,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:07:24,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880413757] [2021-11-06 19:07:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:07:24,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:07:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:07:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 19:07:24,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:07:24,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880413757] [2021-11-06 19:07:24,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880413757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:07:24,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:07:24,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:07:24,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705303271] [2021-11-06 19:07:24,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:07:24,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:07:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:07:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:07:24,756 INFO L87 Difference]: Start difference. First operand 65386 states and 83093 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)