./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.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 b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 21:53:57,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 21:53:57,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 21:53:57,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 21:53:57,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 21:53:57,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 21:53:57,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 21:53:57,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 21:53:57,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 21:53:57,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 21:53:57,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 21:53:57,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 21:53:57,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 21:53:57,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 21:53:57,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 21:53:57,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 21:53:57,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 21:53:57,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 21:53:57,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 21:53:57,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 21:53:57,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 21:53:57,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 21:53:57,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 21:53:57,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 21:53:57,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 21:53:57,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 21:53:57,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 21:53:57,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 21:53:57,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 21:53:57,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 21:53:57,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 21:53:57,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 21:53:57,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 21:53:57,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 21:53:57,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 21:53:57,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 21:53:57,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 21:53:57,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 21:53:57,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 21:53:57,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 21:53:57,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 21:53:57,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 21:53:57,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 21:53:57,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 21:53:57,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 21:53:57,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 21:53:57,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 21:53:57,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 21:53:57,617 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 21:53:57,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 21:53:57,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 21:53:57,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 21:53:57,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 21:53:57,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 21:53:57,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 21:53:57,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 21:53:57,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 21:53:57,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 21:53:57,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 21:53:57,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 21:53:57,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 21:53:57,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 21:53:57,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 21:53:57,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 21:53:57,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 21:53:57,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 21:53:57,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 21:53:57,620 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 21:53:57,620 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 21:53:57,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 21:53:57,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 21:53:57,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2021-11-05 21:53:57,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 21:53:57,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 21:53:57,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 21:53:57,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 21:53:57,927 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 21:53:57,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-05 21:53:57,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8e78569/6a238435d5694b73a049f79ee8702849/FLAGdb87284e3 [2021-11-05 21:53:58,587 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 21:53:58,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-05 21:53:58,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8e78569/6a238435d5694b73a049f79ee8702849/FLAGdb87284e3 [2021-11-05 21:53:58,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8e78569/6a238435d5694b73a049f79ee8702849 [2021-11-05 21:53:58,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 21:53:58,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 21:53:58,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 21:53:58,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 21:53:58,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 21:53:58,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 09:53:58" (1/1) ... [2021-11-05 21:53:58,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba6778c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:53:58, skipping insertion in model container [2021-11-05 21:53:58,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 09:53:58" (1/1) ... [2021-11-05 21:53:58,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 21:53:58,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 21:54:00,232 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-05 21:54:00,234 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-05 21:54:00,234 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-05 21:54:00,235 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-05 21:54:00,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 21:54:00,275 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 21:54:00,540 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-05 21:54:00,541 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-05 21:54:00,541 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-05 21:54:00,541 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-05 21:54:00,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 21:54:00,651 INFO L208 MainTranslator]: Completed translation [2021-11-05 21:54:00,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00 WrapperNode [2021-11-05 21:54:00,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 21:54:00,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 21:54:00,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 21:54:00,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 21:54:00,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:00,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:01,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 21:54:01,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 21:54:01,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 21:54:01,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 21:54:01,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:01,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:01,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:01,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:01,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:02,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:02,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:02,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 21:54:02,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 21:54:02,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 21:54:02,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 21:54:02,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (1/1) ... [2021-11-05 21:54:02,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 21:54:02,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 21:54:02,389 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) [2021-11-05 21:54:02,440 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 [2021-11-05 21:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 21:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 21:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 21:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 21:54:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 21:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 21:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 21:54:02,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 21:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 21:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 21:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 21:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 21:54:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 21:54:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 21:54:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 21:54:12,433 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 21:54:12,434 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-05 21:54:12,434 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 21:54:12,435 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 21:54:12,436 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 21:54:12,436 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 21:54:12,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 21:54:12,519 INFO L299 CfgBuilder]: Removed 10552 assume(true) statements. [2021-11-05 21:54:12,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 09:54:12 BoogieIcfgContainer [2021-11-05 21:54:12,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 21:54:12,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 21:54:12,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 21:54:12,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 21:54:12,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 09:53:58" (1/3) ... [2021-11-05 21:54:12,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c5a33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 09:54:12, skipping insertion in model container [2021-11-05 21:54:12,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:54:00" (2/3) ... [2021-11-05 21:54:12,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c5a33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 09:54:12, skipping insertion in model container [2021-11-05 21:54:12,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 09:54:12" (3/3) ... [2021-11-05 21:54:12,540 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-05 21:54:12,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 21:54:12,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-11-05 21:54:12,630 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 21:54:12,635 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 [2021-11-05 21:54:12,636 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-11-05 21:54:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 6856 states, 6791 states have (on average 1.2098365483728464) internal successors, (8216), 6855 states have internal predecessors, (8216), 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) [2021-11-05 21:54:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 21:54:12,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:54:12,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:54:12,732 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-05 21:54:12,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:54:12,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1312456937, now seen corresponding path program 1 times [2021-11-05 21:54:12,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:54:12,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024194114] [2021-11-05 21:54:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:54:12,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:54:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:54:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:54:13,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:54:13,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024194114] [2021-11-05 21:54:13,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024194114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:54:13,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:54:13,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:54:13,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218320880] [2021-11-05 21:54:13,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:54:13,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:54:13,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:54:13,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:54:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:13,266 INFO L87 Difference]: Start difference. First operand has 6856 states, 6791 states have (on average 1.2098365483728464) internal successors, (8216), 6855 states have internal predecessors, (8216), 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 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-05 21:54:15,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:54:15,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:54:15,904 INFO L93 Difference]: Finished difference Result 19983 states and 23887 transitions. [2021-11-05 21:54:15,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:54:15,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-05 21:54:15,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:54:15,965 INFO L225 Difference]: With dead ends: 19983 [2021-11-05 21:54:15,965 INFO L226 Difference]: Without dead ends: 12939 [2021-11-05 21:54:15,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:15,992 INFO L933 BasicCegarLoop]: 8112 mSDtfsCounter, 7632 mSDsluCounter, 7946 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2072.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7632 SdHoareTripleChecker+Valid, 16058 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.78ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2164.19ms IncrementalHoareTripleChecker+Time [2021-11-05 21:54:15,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7632 Valid, 16058 Invalid, 44 Unknown, 0 Unchecked, 36.78ms Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2164.19ms Time] [2021-11-05 21:54:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12939 states. [2021-11-05 21:54:16,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12939 to 12413. [2021-11-05 21:54:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12413 states, 12348 states have (on average 1.1755749919015226) internal successors, (14516), 12412 states have internal predecessors, (14516), 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) [2021-11-05 21:54:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12413 states to 12413 states and 14516 transitions. [2021-11-05 21:54:16,344 INFO L78 Accepts]: Start accepts. Automaton has 12413 states and 14516 transitions. Word has length 43 [2021-11-05 21:54:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:54:16,346 INFO L470 AbstractCegarLoop]: Abstraction has 12413 states and 14516 transitions. [2021-11-05 21:54:16,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-05 21:54:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 12413 states and 14516 transitions. [2021-11-05 21:54:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 21:54:16,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:54:16,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:54:16,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 21:54:16,353 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-05 21:54:16,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:54:16,354 INFO L85 PathProgramCache]: Analyzing trace with hash 452358301, now seen corresponding path program 1 times [2021-11-05 21:54:16,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:54:16,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562319709] [2021-11-05 21:54:16,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:54:16,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:54:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:54:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:54:16,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:54:16,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562319709] [2021-11-05 21:54:16,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562319709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:54:16,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:54:16,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:54:16,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054817402] [2021-11-05 21:54:16,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:54:16,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:54:16,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:54:16,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:54:16,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:16,506 INFO L87 Difference]: Start difference. First operand 12413 states and 14516 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) [2021-11-05 21:54:18,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:54:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:54:19,000 INFO L93 Difference]: Finished difference Result 34172 states and 40034 transitions. [2021-11-05 21:54:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:54:19,001 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 [2021-11-05 21:54:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:54:19,071 INFO L225 Difference]: With dead ends: 34172 [2021-11-05 21:54:19,073 INFO L226 Difference]: Without dead ends: 21835 [2021-11-05 21:54:19,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:19,101 INFO L933 BasicCegarLoop]: 7799 mSDtfsCounter, 6245 mSDsluCounter, 7374 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1945.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6245 SdHoareTripleChecker+Valid, 15173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.40ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2030.85ms IncrementalHoareTripleChecker+Time [2021-11-05 21:54:19,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6245 Valid, 15173 Invalid, 28 Unknown, 0 Unchecked, 19.40ms Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 2030.85ms Time] [2021-11-05 21:54:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21835 states. [2021-11-05 21:54:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21835 to 21555. [2021-11-05 21:54:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21555 states, 21490 states have (on average 1.1789204281060959) internal successors, (25335), 21554 states have internal predecessors, (25335), 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) [2021-11-05 21:54:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21555 states to 21555 states and 25335 transitions. [2021-11-05 21:54:19,774 INFO L78 Accepts]: Start accepts. Automaton has 21555 states and 25335 transitions. Word has length 45 [2021-11-05 21:54:19,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:54:19,778 INFO L470 AbstractCegarLoop]: Abstraction has 21555 states and 25335 transitions. [2021-11-05 21:54:19,779 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) [2021-11-05 21:54:19,779 INFO L276 IsEmpty]: Start isEmpty. Operand 21555 states and 25335 transitions. [2021-11-05 21:54:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 21:54:19,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:54:19,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:54:19,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 21:54:19,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-05 21:54:19,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:54:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1773104503, now seen corresponding path program 1 times [2021-11-05 21:54:19,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:54:19,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105875620] [2021-11-05 21:54:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:54:19,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:54:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:54:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:54:19,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:54:19,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105875620] [2021-11-05 21:54:19,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105875620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:54:19,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:54:19,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:54:19,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720236794] [2021-11-05 21:54:19,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:54:19,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:54:19,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:54:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:54:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:19,876 INFO L87 Difference]: Start difference. First operand 21555 states and 25335 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-05 21:54:21,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:54:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:54:22,810 INFO L93 Difference]: Finished difference Result 64155 states and 75438 transitions. [2021-11-05 21:54:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:54:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-05 21:54:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:54:22,892 INFO L225 Difference]: With dead ends: 64155 [2021-11-05 21:54:22,892 INFO L226 Difference]: Without dead ends: 42676 [2021-11-05 21:54:22,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:22,936 INFO L933 BasicCegarLoop]: 7800 mSDtfsCounter, 7519 mSDsluCounter, 7746 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2043.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7519 SdHoareTripleChecker+Valid, 15546 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.93ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2152.49ms IncrementalHoareTripleChecker+Time [2021-11-05 21:54:22,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7519 Valid, 15546 Invalid, 34 Unknown, 0 Unchecked, 18.93ms Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2152.49ms Time] [2021-11-05 21:54:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42676 states. [2021-11-05 21:54:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42676 to 42624. [2021-11-05 21:54:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42624 states, 42559 states have (on average 1.178082191780822) internal successors, (50138), 42623 states have internal predecessors, (50138), 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) [2021-11-05 21:54:23,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42624 states to 42624 states and 50138 transitions. [2021-11-05 21:54:23,826 INFO L78 Accepts]: Start accepts. Automaton has 42624 states and 50138 transitions. Word has length 46 [2021-11-05 21:54:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:54:23,826 INFO L470 AbstractCegarLoop]: Abstraction has 42624 states and 50138 transitions. [2021-11-05 21:54:23,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-05 21:54:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 42624 states and 50138 transitions. [2021-11-05 21:54:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-05 21:54:23,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:54:23,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:54:23,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 21:54:23,828 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-05 21:54:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:54:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1413293794, now seen corresponding path program 1 times [2021-11-05 21:54:23,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:54:23,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277796808] [2021-11-05 21:54:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:54:23,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:54:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:54:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:54:23,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:54:23,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277796808] [2021-11-05 21:54:23,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277796808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:54:23,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:54:23,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:54:23,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120846765] [2021-11-05 21:54:23,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:54:23,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:54:23,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:54:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:54:23,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:23,940 INFO L87 Difference]: Start difference. First operand 42624 states and 50138 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-05 21:54:25,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:54:26,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:54:26,361 INFO L93 Difference]: Finished difference Result 71681 states and 84729 transitions. [2021-11-05 21:54:26,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:54:26,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-05 21:54:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:54:26,412 INFO L225 Difference]: With dead ends: 71681 [2021-11-05 21:54:26,412 INFO L226 Difference]: Without dead ends: 29133 [2021-11-05 21:54:26,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:26,470 INFO L933 BasicCegarLoop]: 8115 mSDtfsCounter, 2675 mSDsluCounter, 7644 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1614.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2675 SdHoareTripleChecker+Valid, 15759 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.22ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1722.33ms IncrementalHoareTripleChecker+Time [2021-11-05 21:54:26,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2675 Valid, 15759 Invalid, 100 Unknown, 0 Unchecked, 11.22ms Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 1722.33ms Time] [2021-11-05 21:54:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29133 states. [2021-11-05 21:54:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29133 to 29011. [2021-11-05 21:54:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29011 states, 28946 states have (on average 1.1910108477855317) internal successors, (34475), 29010 states have internal predecessors, (34475), 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) [2021-11-05 21:54:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29011 states to 29011 states and 34475 transitions. [2021-11-05 21:54:27,182 INFO L78 Accepts]: Start accepts. Automaton has 29011 states and 34475 transitions. Word has length 49 [2021-11-05 21:54:27,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:54:27,182 INFO L470 AbstractCegarLoop]: Abstraction has 29011 states and 34475 transitions. [2021-11-05 21:54:27,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-05 21:54:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 29011 states and 34475 transitions. [2021-11-05 21:54:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 21:54:27,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:54:27,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:54:27,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 21:54:27,184 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-05 21:54:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:54:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash 354775553, now seen corresponding path program 1 times [2021-11-05 21:54:27,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:54:27,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76943156] [2021-11-05 21:54:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:54:27,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:54:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:54:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:54:27,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:54:27,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76943156] [2021-11-05 21:54:27,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76943156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:54:27,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:54:27,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:54:27,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850741302] [2021-11-05 21:54:27,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:54:27,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:54:27,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:54:27,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:54:27,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:27,275 INFO L87 Difference]: Start difference. First operand 29011 states and 34475 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-05 21:54:29,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:54:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:54:30,242 INFO L93 Difference]: Finished difference Result 80074 states and 94609 transitions. [2021-11-05 21:54:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:54:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-05 21:54:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:54:30,336 INFO L225 Difference]: With dead ends: 80074 [2021-11-05 21:54:30,337 INFO L226 Difference]: Without dead ends: 51139 [2021-11-05 21:54:30,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:30,391 INFO L933 BasicCegarLoop]: 7798 mSDtfsCounter, 7117 mSDsluCounter, 7647 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2072.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7117 SdHoareTripleChecker+Valid, 15445 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.38ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2169.77ms IncrementalHoareTripleChecker+Time [2021-11-05 21:54:30,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7117 Valid, 15445 Invalid, 65 Unknown, 0 Unchecked, 11.38ms Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 1 Unknown, 0 Unchecked, 2169.77ms Time] [2021-11-05 21:54:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51139 states. [2021-11-05 21:54:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51139 to 50690. [2021-11-05 21:54:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50690 states, 50625 states have (on average 1.1794172839506172) internal successors, (59708), 50689 states have internal predecessors, (59708), 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) [2021-11-05 21:54:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50690 states to 50690 states and 59708 transitions. [2021-11-05 21:54:31,368 INFO L78 Accepts]: Start accepts. Automaton has 50690 states and 59708 transitions. Word has length 52 [2021-11-05 21:54:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:54:31,368 INFO L470 AbstractCegarLoop]: Abstraction has 50690 states and 59708 transitions. [2021-11-05 21:54:31,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-05 21:54:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 50690 states and 59708 transitions. [2021-11-05 21:54:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 21:54:31,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:54:31,369 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 21:54:31,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 21:54:31,369 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-05 21:54:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:54:31,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1310411076, now seen corresponding path program 1 times [2021-11-05 21:54:31,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:54:31,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874360177] [2021-11-05 21:54:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:54:31,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:54:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:54:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:54:31,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:54:31,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874360177] [2021-11-05 21:54:31,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874360177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:54:31,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:54:31,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:54:31,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940443733] [2021-11-05 21:54:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:54:31,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:54:31,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:54:31,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:54:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:31,443 INFO L87 Difference]: Start difference. First operand 50690 states and 59708 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-05 21:54:33,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:54:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:54:35,058 INFO L93 Difference]: Finished difference Result 149133 states and 175755 transitions. [2021-11-05 21:54:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:54:35,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-05 21:54:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:54:35,242 INFO L225 Difference]: With dead ends: 149133 [2021-11-05 21:54:35,242 INFO L226 Difference]: Without dead ends: 98519 [2021-11-05 21:54:35,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:35,331 INFO L933 BasicCegarLoop]: 9268 mSDtfsCounter, 7702 mSDsluCounter, 7793 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2030.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7702 SdHoareTripleChecker+Valid, 17061 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2122.98ms IncrementalHoareTripleChecker+Time [2021-11-05 21:54:35,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7702 Valid, 17061 Invalid, 21 Unknown, 0 Unchecked, 14.08ms Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2122.98ms Time] [2021-11-05 21:54:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98519 states. [2021-11-05 21:54:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98519 to 98197. [2021-11-05 21:54:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98197 states, 98132 states have (on average 1.179900542126931) internal successors, (115786), 98196 states have internal predecessors, (115786), 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) [2021-11-05 21:54:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98197 states to 98197 states and 115786 transitions. [2021-11-05 21:54:37,731 INFO L78 Accepts]: Start accepts. Automaton has 98197 states and 115786 transitions. Word has length 60 [2021-11-05 21:54:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:54:37,731 INFO L470 AbstractCegarLoop]: Abstraction has 98197 states and 115786 transitions. [2021-11-05 21:54:37,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-05 21:54:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 98197 states and 115786 transitions. [2021-11-05 21:54:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 21:54:37,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:54:37,732 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:54:37,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 21:54:37,733 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-05 21:54:37,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:54:37,735 INFO L85 PathProgramCache]: Analyzing trace with hash -83004131, now seen corresponding path program 1 times [2021-11-05 21:54:37,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:54:37,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112906153] [2021-11-05 21:54:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:54:37,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:54:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:54:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:54:37,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:54:37,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112906153] [2021-11-05 21:54:37,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112906153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:54:37,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:54:37,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 21:54:37,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999009178] [2021-11-05 21:54:37,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:54:37,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:54:37,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:54:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:54:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:37,830 INFO L87 Difference]: Start difference. First operand 98197 states and 115786 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-05 21:54:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:54:41,267 INFO L93 Difference]: Finished difference Result 294337 states and 347072 transitions. [2021-11-05 21:54:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:54:41,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-05 21:54:41,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:54:41,701 INFO L225 Difference]: With dead ends: 294337 [2021-11-05 21:54:41,702 INFO L226 Difference]: Without dead ends: 196267 [2021-11-05 21:54:41,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:41,949 INFO L933 BasicCegarLoop]: 13152 mSDtfsCounter, 7653 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7653 SdHoareTripleChecker+Valid, 20748 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.31ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 331.99ms IncrementalHoareTripleChecker+Time [2021-11-05 21:54:41,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7653 Valid, 20748 Invalid, 252 Unknown, 0 Unchecked, 13.31ms Time], IncrementalHoareTripleChecker [125 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 331.99ms Time] [2021-11-05 21:54:42,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196267 states. [2021-11-05 21:54:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196267 to 196049. [2021-11-05 21:54:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196049 states, 195984 states have (on average 1.1750244917952486) internal successors, (230286), 196048 states have internal predecessors, (230286), 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) [2021-11-05 21:54:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196049 states to 196049 states and 230286 transitions. [2021-11-05 21:54:46,791 INFO L78 Accepts]: Start accepts. Automaton has 196049 states and 230286 transitions. Word has length 81 [2021-11-05 21:54:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:54:46,791 INFO L470 AbstractCegarLoop]: Abstraction has 196049 states and 230286 transitions. [2021-11-05 21:54:46,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-05 21:54:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 196049 states and 230286 transitions. [2021-11-05 21:54:46,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 21:54:46,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:54:46,795 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:54:46,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 21:54:46,795 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-05 21:54:46,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:54:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash -477370917, now seen corresponding path program 1 times [2021-11-05 21:54:46,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:54:46,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295756529] [2021-11-05 21:54:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:54:46,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:54:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:54:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:54:46,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:54:46,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295756529] [2021-11-05 21:54:46,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295756529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:54:46,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:54:46,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 21:54:46,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870705519] [2021-11-05 21:54:46,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:54:46,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:54:46,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:54:46,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:54:46,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:46,994 INFO L87 Difference]: Start difference. First operand 196049 states and 230286 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-05 21:54:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:54:50,186 INFO L93 Difference]: Finished difference Result 294119 states and 344975 transitions. [2021-11-05 21:54:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:54:50,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-05 21:54:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:54:50,560 INFO L225 Difference]: With dead ends: 294119 [2021-11-05 21:54:50,561 INFO L226 Difference]: Without dead ends: 98197 [2021-11-05 21:54:50,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:54:50,725 INFO L933 BasicCegarLoop]: 7743 mSDtfsCounter, 7698 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7698 SdHoareTripleChecker+Valid, 7743 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.65ms IncrementalHoareTripleChecker+Time [2021-11-05 21:54:50,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7698 Valid, 7743 Invalid, 1 Unknown, 0 Unchecked, 8.34ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.65ms Time] [2021-11-05 21:54:50,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98197 states. [2021-11-05 21:54:52,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98197 to 98197. [2021-11-05 21:54:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98197 states, 98132 states have (on average 1.169852851261566) internal successors, (114800), 98196 states have internal predecessors, (114800), 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) [2021-11-05 21:54:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98197 states to 98197 states and 114800 transitions. [2021-11-05 21:54:53,111 INFO L78 Accepts]: Start accepts. Automaton has 98197 states and 114800 transitions. Word has length 81 [2021-11-05 21:54:53,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:54:53,111 INFO L470 AbstractCegarLoop]: Abstraction has 98197 states and 114800 transitions. [2021-11-05 21:54:53,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-05 21:54:53,111 INFO L276 IsEmpty]: Start isEmpty. Operand 98197 states and 114800 transitions. [2021-11-05 21:54:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 21:54:53,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:54:53,114 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:54:53,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 21:54:53,114 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-05 21:54:53,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:54:53,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1321376419, now seen corresponding path program 1 times [2021-11-05 21:54:53,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:54:53,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982811076] [2021-11-05 21:54:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:54:53,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:54:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat