./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-ethernet-intel-ixgbevf-ixgbevf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-ethernet-intel-ixgbevf-ixgbevf.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 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:28:09,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:28:09,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:28:09,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:28:09,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:28:09,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:28:09,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:28:09,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:28:09,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:28:09,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:28:09,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:28:09,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:28:09,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:28:09,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:28:09,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:28:09,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:28:09,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:28:09,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:28:09,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:28:09,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:28:09,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:28:09,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:28:09,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:28:09,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:28:09,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:28:09,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:28:09,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:28:09,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:28:09,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:28:09,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:28:09,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:28:09,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:28:09,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:28:09,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:28:09,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:28:09,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:28:09,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:28:09,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:28:09,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:28:09,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:28:09,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:28:09,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:28:09,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:28:09,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:28:09,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:28:09,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:28:09,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:28:09,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:28:09,812 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:28:09,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:28:09,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:28:09,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:28:09,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:28:09,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:28:09,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:28:09,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:28:09,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:28:09,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:28:09,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:28:09,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:28:09,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:28:09,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:28:09,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:28:09,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:28:09,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:28:09,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:28:09,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:28:09,816 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:28:09,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:28:09,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:28:09,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:28:09,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac [2021-11-07 17:28:10,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:28:10,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:28:10,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:28:10,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:28:10,098 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:28:10,099 INFO L432 ainManager$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-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-07 17:28:10,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236913698/7b773c1e0f744ae7a17358740f2ba7c7/FLAG6b3714ab0 [2021-11-07 17:28:10,934 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:28:10,935 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-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-07 17:28:10,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236913698/7b773c1e0f744ae7a17358740f2ba7c7/FLAG6b3714ab0 [2021-11-07 17:28:11,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236913698/7b773c1e0f744ae7a17358740f2ba7c7 [2021-11-07 17:28:11,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:28:11,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:28:11,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:28:11,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:28:11,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:28:11,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:28:11" (1/1) ... [2021-11-07 17:28:11,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eadfa74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:11, skipping insertion in model container [2021-11-07 17:28:11,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:28:11" (1/1) ... [2021-11-07 17:28:11,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:28:11,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:28:16,575 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-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2021-11-07 17:28:16,579 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-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2021-11-07 17:28:16,579 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-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2021-11-07 17:28:16,579 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-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2021-11-07 17:28:16,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:28:16,699 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:28:17,151 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-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2021-11-07 17:28:17,152 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-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2021-11-07 17:28:17,152 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-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2021-11-07 17:28:17,153 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-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2021-11-07 17:28:17,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:28:17,493 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:28:17,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17 WrapperNode [2021-11-07 17:28:17,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:28:17,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:28:17,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:28:17,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:28:17,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:17,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:19,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:28:19,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:28:19,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:28:19,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:28:19,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:19,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:19,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:19,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:20,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:21,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:21,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:21,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:28:21,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:28:21,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:28:21,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:28:21,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (1/1) ... [2021-11-07 17:28:21,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:28:21,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:28:21,751 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) [2021-11-07 17:28:21,770 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 [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_ack [2021-11-07 17:28:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_ack [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_posted_mbx [2021-11-07 17:28:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_posted_mbx [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 17:28:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_hw_vf [2021-11-07 17:28:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_hw_vf [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_posted_mbx [2021-11-07 17:28:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_posted_mbx [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-07 17:28:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:28:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_msg [2021-11-07 17:28:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_msg [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-07 17:28:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_msg_read_ack [2021-11-07 17:28:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_msg_read_ack [2021-11-07 17:28:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-07 17:28:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-07 17:28:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_mc_addr_list_vf [2021-11-07 17:28:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_mc_addr_list_vf [2021-11-07 17:28:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:28:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_hw_vf [2021-11-07 17:28:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_hw_vf [2021-11-07 17:28:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:31:39,664 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:31:39,664 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:31:39,665 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 17:31:39,666 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:31:39,666 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:31:39,667 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 17:31:39,669 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:31:39,671 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:31:39,826 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:31:39,826 INFO L299 CfgBuilder]: Removed 13444 assume(true) statements. [2021-11-07 17:31:39,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:31:39 BoogieIcfgContainer [2021-11-07 17:31:39,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:31:39,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:31:39,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:31:39,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:31:39,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:28:11" (1/3) ... [2021-11-07 17:31:39,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea5c627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:31:39, skipping insertion in model container [2021-11-07 17:31:39,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:28:17" (2/3) ... [2021-11-07 17:31:39,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea5c627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:31:39, skipping insertion in model container [2021-11-07 17:31:39,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:31:39" (3/3) ... [2021-11-07 17:31:39,880 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-07 17:31:39,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:31:39,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 248 error locations. [2021-11-07 17:31:39,954 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:31:39,958 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 [2021-11-07 17:31:39,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 248 error locations. [2021-11-07 17:31:40,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 14124 states, 13573 states have (on average 1.3597583437707212) internal successors, (18456), 13820 states have internal predecessors, (18456), 292 states have call successors, (292), 11 states have call predecessors, (292), 11 states have return successors, (292), 292 states have call predecessors, (292), 292 states have call successors, (292) [2021-11-07 17:31:40,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 17:31:40,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:31:40,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:31:40,124 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-07 17:31:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:31:40,127 INFO L85 PathProgramCache]: Analyzing trace with hash 181239163, now seen corresponding path program 1 times [2021-11-07 17:31:40,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:31:40,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491071275] [2021-11-07 17:31:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:31:40,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:31:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:31:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:31:40,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:31:40,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491071275] [2021-11-07 17:31:40,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491071275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:31:40,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:31:40,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:31:40,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354111903] [2021-11-07 17:31:40,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:31:40,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:31:40,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:31:40,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:31:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:31:40,885 INFO L87 Difference]: Start difference. First operand has 14124 states, 13573 states have (on average 1.3597583437707212) internal successors, (18456), 13820 states have internal predecessors, (18456), 292 states have call successors, (292), 11 states have call predecessors, (292), 11 states have return successors, (292), 292 states have call predecessors, (292), 292 states have call successors, (292) Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-07 17:31:43,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:31:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:31:44,248 INFO L93 Difference]: Finished difference Result 40942 states and 55082 transitions. [2021-11-07 17:31:44,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:31:44,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-07 17:31:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:31:44,369 INFO L225 Difference]: With dead ends: 40942 [2021-11-07 17:31:44,369 INFO L226 Difference]: Without dead ends: 26162 [2021-11-07 17:31:44,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:31:44,568 INFO L933 BasicCegarLoop]: 18392 mSDtfsCounter, 17474 mSDsluCounter, 18052 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2131.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17474 SdHoareTripleChecker+Valid, 36444 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.40ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2271.45ms IncrementalHoareTripleChecker+Time [2021-11-07 17:31:44,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17474 Valid, 36444 Invalid, 34 Unknown, 0 Unchecked, 75.40ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2271.45ms Time] [2021-11-07 17:31:44,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26162 states. [2021-11-07 17:31:45,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26162 to 25762. [2021-11-07 17:31:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25762 states, 24908 states have (on average 1.296129757507628) internal successors, (32284), 25155 states have internal predecessors, (32284), 584 states have call successors, (584), 22 states have call predecessors, (584), 22 states have return successors, (584), 584 states have call predecessors, (584), 584 states have call successors, (584) [2021-11-07 17:31:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25762 states to 25762 states and 33452 transitions. [2021-11-07 17:31:45,360 INFO L78 Accepts]: Start accepts. Automaton has 25762 states and 33452 transitions. Word has length 105 [2021-11-07 17:31:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:31:45,361 INFO L470 AbstractCegarLoop]: Abstraction has 25762 states and 33452 transitions. [2021-11-07 17:31:45,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-07 17:31:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 25762 states and 33452 transitions. [2021-11-07 17:31:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 17:31:45,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:31:45,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:31:45,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:31:45,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr162ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-07 17:31:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:31:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1940933402, now seen corresponding path program 1 times [2021-11-07 17:31:45,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:31:45,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927293257] [2021-11-07 17:31:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:31:45,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:31:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:31:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:31:45,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:31:45,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927293257] [2021-11-07 17:31:45,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927293257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:31:45,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:31:45,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:31:45,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879122433] [2021-11-07 17:31:45,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:31:45,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:31:45,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:31:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:31:45,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:31:45,913 INFO L87 Difference]: Start difference. First operand 25762 states and 33452 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-07 17:31:47,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:31:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:31:48,798 INFO L93 Difference]: Finished difference Result 47841 states and 62062 transitions. [2021-11-07 17:31:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:31:48,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2021-11-07 17:31:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:31:48,866 INFO L225 Difference]: With dead ends: 47841 [2021-11-07 17:31:48,867 INFO L226 Difference]: Without dead ends: 22315 [2021-11-07 17:31:48,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:31:48,936 INFO L933 BasicCegarLoop]: 17173 mSDtfsCounter, 6080 mSDsluCounter, 16889 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2144.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6080 SdHoareTripleChecker+Valid, 34062 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.03ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2282.59ms IncrementalHoareTripleChecker+Time [2021-11-07 17:31:48,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6080 Valid, 34062 Invalid, 106 Unknown, 0 Unchecked, 40.03ms Time], IncrementalHoareTripleChecker [21 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 2282.59ms Time] [2021-11-07 17:31:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22315 states. [2021-11-07 17:31:49,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22315 to 22117. [2021-11-07 17:31:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22117 states, 21320 states have (on average 1.297936210131332) internal successors, (27672), 21567 states have internal predecessors, (27672), 516 states have call successors, (516), 33 states have call predecessors, (516), 33 states have return successors, (516), 516 states have call predecessors, (516), 516 states have call successors, (516) [2021-11-07 17:31:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22117 states to 22117 states and 28704 transitions. [2021-11-07 17:31:49,870 INFO L78 Accepts]: Start accepts. Automaton has 22117 states and 28704 transitions. Word has length 113 [2021-11-07 17:31:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:31:49,871 INFO L470 AbstractCegarLoop]: Abstraction has 22117 states and 28704 transitions. [2021-11-07 17:31:49,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-11-07 17:31:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 22117 states and 28704 transitions. [2021-11-07 17:31:49,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 17:31:49,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:31:49,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:31:49,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:31:49,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-07 17:31:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:31:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 809798743, now seen corresponding path program 1 times [2021-11-07 17:31:49,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:31:49,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497860081] [2021-11-07 17:31:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:31:49,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:31:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:31:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:31:50,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:31:50,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497860081] [2021-11-07 17:31:50,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497860081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:31:50,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:31:50,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:31:50,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629140106] [2021-11-07 17:31:50,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:31:50,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:31:50,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:31:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:31:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:31:50,279 INFO L87 Difference]: Start difference. First operand 22117 states and 28704 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 17:31:52,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:31:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:31:53,164 INFO L93 Difference]: Finished difference Result 50439 states and 65277 transitions. [2021-11-07 17:31:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:31:53,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 119 [2021-11-07 17:31:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:31:53,230 INFO L225 Difference]: With dead ends: 50439 [2021-11-07 17:31:53,230 INFO L226 Difference]: Without dead ends: 28558 [2021-11-07 17:31:53,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:31:53,266 INFO L933 BasicCegarLoop]: 17287 mSDtfsCounter, 11923 mSDsluCounter, 16987 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2157.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11923 SdHoareTripleChecker+Valid, 34274 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.41ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2296.94ms IncrementalHoareTripleChecker+Time [2021-11-07 17:31:53,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11923 Valid, 34274 Invalid, 109 Unknown, 0 Unchecked, 28.41ms Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 1 Unknown, 0 Unchecked, 2296.94ms Time] [2021-11-07 17:31:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28558 states. [2021-11-07 17:31:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28558 to 27825. [2021-11-07 17:31:53,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27825 states, 26839 states have (on average 1.2963225157420173) internal successors, (34792), 27086 states have internal predecessors, (34792), 683 states have call successors, (683), 55 states have call predecessors, (683), 55 states have return successors, (683), 683 states have call predecessors, (683), 683 states have call successors, (683) [2021-11-07 17:31:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27825 states to 27825 states and 36158 transitions. [2021-11-07 17:31:53,920 INFO L78 Accepts]: Start accepts. Automaton has 27825 states and 36158 transitions. Word has length 119 [2021-11-07 17:31:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:31:53,920 INFO L470 AbstractCegarLoop]: Abstraction has 27825 states and 36158 transitions. [2021-11-07 17:31:53,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 17:31:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 27825 states and 36158 transitions. [2021-11-07 17:31:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 17:31:53,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:31:53,924 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:31:53,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:31:53,924 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-07 17:31:53,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:31:53,925 INFO L85 PathProgramCache]: Analyzing trace with hash -80279301, now seen corresponding path program 1 times [2021-11-07 17:31:53,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:31:53,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110537699] [2021-11-07 17:31:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:31:53,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:31:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:31:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:31:54,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:31:54,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110537699] [2021-11-07 17:31:54,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110537699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:31:54,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:31:54,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:31:54,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91143355] [2021-11-07 17:31:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:31:54,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:31:54,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:31:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:31:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:31:54,249 INFO L87 Difference]: Start difference. First operand 27825 states and 36158 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-07 17:31:56,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:31:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:31:57,491 INFO L93 Difference]: Finished difference Result 81183 states and 105647 transitions. [2021-11-07 17:31:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:31:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-07 17:31:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:31:57,658 INFO L225 Difference]: With dead ends: 81183 [2021-11-07 17:31:57,659 INFO L226 Difference]: Without dead ends: 54330 [2021-11-07 17:31:57,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:31:57,741 INFO L933 BasicCegarLoop]: 18300 mSDtfsCounter, 16567 mSDsluCounter, 17057 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2201.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16567 SdHoareTripleChecker+Valid, 35357 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.77ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2339.29ms IncrementalHoareTripleChecker+Time [2021-11-07 17:31:57,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16567 Valid, 35357 Invalid, 30 Unknown, 0 Unchecked, 35.77ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2339.29ms Time] [2021-11-07 17:31:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54330 states. [2021-11-07 17:31:59,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54330 to 53930. [2021-11-07 17:31:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53930 states, 52250 states have (on average 1.2982583732057416) internal successors, (67834), 52497 states have internal predecessors, (67834), 1333 states have call successors, (1333), 99 states have call predecessors, (1333), 99 states have return successors, (1333), 1333 states have call predecessors, (1333), 1333 states have call successors, (1333) [2021-11-07 17:31:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53930 states to 53930 states and 70500 transitions. [2021-11-07 17:31:59,585 INFO L78 Accepts]: Start accepts. Automaton has 53930 states and 70500 transitions. Word has length 134 [2021-11-07 17:31:59,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:31:59,586 INFO L470 AbstractCegarLoop]: Abstraction has 53930 states and 70500 transitions. [2021-11-07 17:31:59,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-07 17:31:59,589 INFO L276 IsEmpty]: Start isEmpty. Operand 53930 states and 70500 transitions. [2021-11-07 17:31:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 17:31:59,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:31:59,594 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:31:59,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:31:59,594 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-07 17:31:59,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:31:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1360142979, now seen corresponding path program 1 times [2021-11-07 17:31:59,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:31:59,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742308046] [2021-11-07 17:31:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:31:59,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:31:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:31:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:31:59,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:31:59,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742308046] [2021-11-07 17:31:59,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742308046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:31:59,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:31:59,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:31:59,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265432970] [2021-11-07 17:31:59,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:31:59,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:31:59,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:31:59,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:31:59,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:31:59,920 INFO L87 Difference]: Start difference. First operand 53930 states and 70500 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-07 17:32:01,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:32:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:32:03,676 INFO L93 Difference]: Finished difference Result 133397 states and 174339 transitions. [2021-11-07 17:32:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:32:03,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-07 17:32:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:32:03,922 INFO L225 Difference]: With dead ends: 133397 [2021-11-07 17:32:03,922 INFO L226 Difference]: Without dead ends: 80439 [2021-11-07 17:32:04,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:32:04,200 INFO L933 BasicCegarLoop]: 33644 mSDtfsCounter, 16629 mSDsluCounter, 16996 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2239.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16629 SdHoareTripleChecker+Valid, 50640 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.38ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2385.10ms IncrementalHoareTripleChecker+Time [2021-11-07 17:32:04,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16629 Valid, 50640 Invalid, 32 Unknown, 0 Unchecked, 41.38ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2385.10ms Time] [2021-11-07 17:32:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80439 states. [2021-11-07 17:32:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80439 to 80018. [2021-11-07 17:32:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80018 states, 77644 states have (on average 1.2989928391118437) internal successors, (100859), 77891 states have internal predecessors, (100859), 1983 states have call successors, (1983), 143 states have call predecessors, (1983), 143 states have return successors, (1983), 1983 states have call predecessors, (1983), 1983 states have call successors, (1983) [2021-11-07 17:32:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80018 states to 80018 states and 104825 transitions. [2021-11-07 17:32:06,349 INFO L78 Accepts]: Start accepts. Automaton has 80018 states and 104825 transitions. Word has length 134 [2021-11-07 17:32:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:32:06,350 INFO L470 AbstractCegarLoop]: Abstraction has 80018 states and 104825 transitions. [2021-11-07 17:32:06,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-07 17:32:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 80018 states and 104825 transitions. [2021-11-07 17:32:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 17:32:06,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:32:06,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:32:06,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:32:06,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-07 17:32:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:32:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1731605693, now seen corresponding path program 1 times [2021-11-07 17:32:06,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:32:06,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674032729] [2021-11-07 17:32:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:32:06,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:32:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:32:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:32:07,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:32:07,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674032729] [2021-11-07 17:32:07,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674032729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:32:07,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:32:07,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:32:07,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067422590] [2021-11-07 17:32:07,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:32:07,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:32:07,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:32:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:32:07,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:32:07,148 INFO L87 Difference]: Start difference. First operand 80018 states and 104825 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-11-07 17:32:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:32:08,943 INFO L93 Difference]: Finished difference Result 80018 states and 104825 transitions. [2021-11-07 17:32:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:32:08,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 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 135 [2021-11-07 17:32:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:32:09,117 INFO L225 Difference]: With dead ends: 80018 [2021-11-07 17:32:09,118 INFO L226 Difference]: Without dead ends: 80012 [2021-11-07 17:32:09,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:32:09,152 INFO L933 BasicCegarLoop]: 17045 mSDtfsCounter, 16723 mSDsluCounter, 17095 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 233.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16723 SdHoareTripleChecker+Valid, 34140 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.57ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281.58ms IncrementalHoareTripleChecker+Time [2021-11-07 17:32:09,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16723 Valid, 34140 Invalid, 246 Unknown, 0 Unchecked, 49.57ms Time], IncrementalHoareTripleChecker [59 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 281.58ms Time] [2021-11-07 17:32:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80012 states. [2021-11-07 17:32:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80012 to 80012. [2021-11-07 17:32:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80012 states, 77641 states have (on average 1.2989657526306977) internal successors, (100853), 77885 states have internal predecessors, (100853), 1983 states have call successors, (1983), 143 states have call predecessors, (1983), 143 states have return successors, (1983), 1983 states have call predecessors, (1983), 1983 states have call successors, (1983) [2021-11-07 17:32:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80012 states to 80012 states and 104819 transitions. [2021-11-07 17:32:11,137 INFO L78 Accepts]: Start accepts. Automaton has 80012 states and 104819 transitions. Word has length 135 [2021-11-07 17:32:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:32:11,138 INFO L470 AbstractCegarLoop]: Abstraction has 80012 states and 104819 transitions. [2021-11-07 17:32:11,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-11-07 17:32:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 80012 states and 104819 transitions. [2021-11-07 17:32:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 17:32:11,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:32:11,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:32:11,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 17:32:11,143 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-07 17:32:11,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:32:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1920542682, now seen corresponding path program 1 times [2021-11-07 17:32:11,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:32:11,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851399457] [2021-11-07 17:32:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:32:11,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:32:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:32:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:32:11,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:32:11,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851399457] [2021-11-07 17:32:11,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851399457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:32:11,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:32:11,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:32:11,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850682188] [2021-11-07 17:32:11,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:32:11,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:32:11,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:32:11,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:32:11,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:32:11,531 INFO L87 Difference]: Start difference. First operand 80012 states and 104819 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-11-07 17:32:13,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:32:13,064 INFO L93 Difference]: Finished difference Result 80012 states and 104819 transitions. [2021-11-07 17:32:13,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:32:13,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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 137 [2021-11-07 17:32:13,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:32:13,486 INFO L225 Difference]: With dead ends: 80012 [2021-11-07 17:32:13,487 INFO L226 Difference]: Without dead ends: 80006 [2021-11-07 17:32:13,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:32:13,517 INFO L933 BasicCegarLoop]: 17065 mSDtfsCounter, 16946 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 381.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16946 SdHoareTripleChecker+Valid, 34001 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.66ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 400.92ms IncrementalHoareTripleChecker+Time [2021-11-07 17:32:13,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16946 Valid, 34001 Invalid, 142 Unknown, 0 Unchecked, 32.66ms Time], IncrementalHoareTripleChecker [49 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 400.92ms Time] [2021-11-07 17:32:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80006 states. [2021-11-07 17:32:15,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80006 to 80006. [2021-11-07 17:32:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80006 states, 77638 states have (on average 1.298938664056261) internal successors, (100847), 77879 states have internal predecessors, (100847), 1983 states have call successors, (1983), 143 states have call predecessors, (1983), 143 states have return successors, (1983), 1983 states have call predecessors, (1983), 1983 states have call successors, (1983) [2021-11-07 17:32:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80006 states to 80006 states and 104813 transitions. [2021-11-07 17:32:16,295 INFO L78 Accepts]: Start accepts. Automaton has 80006 states and 104813 transitions. Word has length 137 [2021-11-07 17:32:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:32:16,295 INFO L470 AbstractCegarLoop]: Abstraction has 80006 states and 104813 transitions. [2021-11-07 17:32:16,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-11-07 17:32:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 80006 states and 104813 transitions. [2021-11-07 17:32:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 17:32:16,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:32:16,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:32:16,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 17:32:16,304 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-07 17:32:16,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:32:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1194604937, now seen corresponding path program 1 times [2021-11-07 17:32:16,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:32:16,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296831199] [2021-11-07 17:32:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:32:16,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:32:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:32:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:32:16,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:32:16,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296831199] [2021-11-07 17:32:16,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296831199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:32:16,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:32:16,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:32:16,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904179993] [2021-11-07 17:32:16,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:32:16,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:32:16,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:32:16,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:32:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:32:16,914 INFO L87 Difference]: Start difference. First operand 80006 states and 104813 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-11-07 17:32:18,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:32:18,373 INFO L93 Difference]: Finished difference Result 80006 states and 104813 transitions. [2021-11-07 17:32:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:32:18,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 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 139 [2021-11-07 17:32:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:32:18,542 INFO L225 Difference]: With dead ends: 80006 [2021-11-07 17:32:18,543 INFO L226 Difference]: Without dead ends: 80000 [2021-11-07 17:32:18,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:32:18,583 INFO L933 BasicCegarLoop]: 17059 mSDtfsCounter, 16938 mSDsluCounter, 16933 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16938 SdHoareTripleChecker+Valid, 33992 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.44ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.89ms IncrementalHoareTripleChecker+Time [2021-11-07 17:32:18,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16938 Valid, 33992 Invalid, 139 Unknown, 0 Unchecked, 30.44ms Time], IncrementalHoareTripleChecker [49 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 175.89ms Time] [2021-11-07 17:32:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80000 states.