./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.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 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 18:54:32,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 18:54:32,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 18:54:32,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 18:54:32,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 18:54:32,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 18:54:32,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 18:54:32,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 18:54:32,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 18:54:32,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 18:54:32,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 18:54:32,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 18:54:32,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 18:54:32,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 18:54:32,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 18:54:32,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 18:54:32,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 18:54:32,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 18:54:32,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 18:54:32,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 18:54:32,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 18:54:32,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 18:54:32,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 18:54:32,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 18:54:32,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 18:54:32,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 18:54:32,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 18:54:32,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 18:54:32,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 18:54:32,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 18:54:32,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 18:54:32,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 18:54:32,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 18:54:32,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 18:54:32,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 18:54:32,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 18:54:32,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 18:54:32,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 18:54:32,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 18:54:32,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 18:54:32,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 18:54:32,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 18:54:32,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 18:54:32,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 18:54:32,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 18:54:32,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 18:54:32,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 18:54:32,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 18:54:32,634 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 18:54:32,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 18:54:32,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 18:54:32,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 18:54:32,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 18:54:32,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 18:54:32,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 18:54:32,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 18:54:32,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 18:54:32,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 18:54:32,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 18:54:32,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 18:54:32,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 18:54:32,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 18:54:32,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 18:54:32,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 18:54:32,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 18:54:32,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 18:54:32,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 18:54:32,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 18:54:32,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 18:54:32,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 18:54:32,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 18:54:32,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 [2021-11-07 18:54:32,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 18:54:32,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 18:54:32,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 18:54:32,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 18:54:32,893 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 18:54:32,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-07 18:54:32,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219801d9a/da3a86f02e324b09b5f95552e0aa4edb/FLAGbe061da24 [2021-11-07 18:54:33,661 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 18:54:33,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-07 18:54:33,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219801d9a/da3a86f02e324b09b5f95552e0aa4edb/FLAGbe061da24 [2021-11-07 18:54:33,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219801d9a/da3a86f02e324b09b5f95552e0aa4edb [2021-11-07 18:54:33,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 18:54:33,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 18:54:33,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 18:54:33,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 18:54:33,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 18:54:33,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:54:33" (1/1) ... [2021-11-07 18:54:33,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196f33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:33, skipping insertion in model container [2021-11-07 18:54:33,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:54:33" (1/1) ... [2021-11-07 18:54:33,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 18:54:33,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 18:54:36,006 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2021-11-07 18:54:36,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 18:54:36,079 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 18:54:36,407 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2021-11-07 18:54:36,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 18:54:36,565 INFO L208 MainTranslator]: Completed translation [2021-11-07 18:54:36,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36 WrapperNode [2021-11-07 18:54:36,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 18:54:36,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 18:54:36,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 18:54:36,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 18:54:36,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:36,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:39,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 18:54:39,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 18:54:39,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 18:54:39,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 18:54:39,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:39,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:39,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:39,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:41,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:41,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:41,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:42,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 18:54:42,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 18:54:42,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 18:54:42,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 18:54:42,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (1/1) ... [2021-11-07 18:54:42,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 18:54:42,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 18:54:42,377 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 18:54:42,444 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 18:54:42,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 18:54:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 18:54:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 18:54:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 18:54:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 18:54:42,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 18:54:42,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 18:55:59,553 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 18:55:59,554 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 18:55:59,554 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 18:55:59,554 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 18:55:59,554 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 18:55:59,555 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 18:55:59,556 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 18:55:59,557 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 18:55:59,558 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-07 18:55:59,559 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 18:55:59,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 18:55:59,618 INFO L299 CfgBuilder]: Removed 20127 assume(true) statements. [2021-11-07 18:55:59,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:55:59 BoogieIcfgContainer [2021-11-07 18:55:59,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 18:55:59,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 18:55:59,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 18:55:59,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 18:55:59,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:54:33" (1/3) ... [2021-11-07 18:55:59,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4762b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:55:59, skipping insertion in model container [2021-11-07 18:55:59,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:54:36" (2/3) ... [2021-11-07 18:55:59,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4762b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:55:59, skipping insertion in model container [2021-11-07 18:55:59,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:55:59" (3/3) ... [2021-11-07 18:55:59,643 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-07 18:55:59,651 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 18:55:59,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 18:55:59,744 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 18:55:59,754 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 18:55:59,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 18:55:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 15154 states, 15150 states have (on average 1.263960396039604) internal successors, (19149), 15153 states have internal predecessors, (19149), 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 18:55:59,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 18:55:59,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:55:59,948 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] [2021-11-07 18:55:59,949 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 18:55:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:55:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1966860879, now seen corresponding path program 1 times [2021-11-07 18:55:59,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:55:59,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864875914] [2021-11-07 18:55:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:55:59,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:56:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:56:00,598 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 18:56:00,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:56:00,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864875914] [2021-11-07 18:56:00,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864875914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:56:00,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:56:00,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:56:00,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079649330] [2021-11-07 18:56:00,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:56:00,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:56:00,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:56:00,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:56:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:56:00,662 INFO L87 Difference]: Start difference. First operand has 15154 states, 15150 states have (on average 1.263960396039604) internal successors, (19149), 15153 states have internal predecessors, (19149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:56:02,743 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 18:56:03,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:56:03,775 INFO L93 Difference]: Finished difference Result 45110 states and 56980 transitions. [2021-11-07 18:56:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:56:03,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-07 18:56:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:56:03,943 INFO L225 Difference]: With dead ends: 45110 [2021-11-07 18:56:03,944 INFO L226 Difference]: Without dead ends: 27803 [2021-11-07 18:56:04,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:56:04,008 INFO L933 BasicCegarLoop]: 19054 mSDtfsCounter, 18853 mSDsluCounter, 19015 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2107.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18853 SdHoareTripleChecker+Valid, 38069 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2242.81ms IncrementalHoareTripleChecker+Time [2021-11-07 18:56:04,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18853 Valid, 38069 Invalid, 14 Unknown, 0 Unchecked, 79.04ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2242.81ms Time] [2021-11-07 18:56:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27803 states. [2021-11-07 18:56:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27803 to 27803. [2021-11-07 18:56:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27803 states, 27799 states have (on average 1.198928018993489) internal successors, (33329), 27802 states have internal predecessors, (33329), 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 18:56:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27803 states to 27803 states and 33329 transitions. [2021-11-07 18:56:04,875 INFO L78 Accepts]: Start accepts. Automaton has 27803 states and 33329 transitions. Word has length 51 [2021-11-07 18:56:04,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:56:04,876 INFO L470 AbstractCegarLoop]: Abstraction has 27803 states and 33329 transitions. [2021-11-07 18:56:04,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 18:56:04,877 INFO L276 IsEmpty]: Start isEmpty. Operand 27803 states and 33329 transitions. [2021-11-07 18:56:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 18:56:04,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:56:04,887 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 18:56:04,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 18:56:04,888 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 18:56:04,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:56:04,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1327347972, now seen corresponding path program 1 times [2021-11-07 18:56:04,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:56:04,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543118150] [2021-11-07 18:56:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:56:04,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:56:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:56:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:56:05,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:56:05,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543118150] [2021-11-07 18:56:05,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543118150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:56:05,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:56:05,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:56:05,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167699419] [2021-11-07 18:56:05,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:56:05,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:56:05,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:56:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:56:05,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:56:05,129 INFO L87 Difference]: Start difference. First operand 27803 states and 33329 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:56:07,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:56:08,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:56:08,050 INFO L93 Difference]: Finished difference Result 55504 states and 66544 transitions. [2021-11-07 18:56:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:56:08,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 18:56:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:56:08,178 INFO L225 Difference]: With dead ends: 55504 [2021-11-07 18:56:08,181 INFO L226 Difference]: Without dead ends: 41628 [2021-11-07 18:56:08,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:56:08,233 INFO L933 BasicCegarLoop]: 33324 mSDtfsCounter, 16591 mSDsluCounter, 16721 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2183.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16591 SdHoareTripleChecker+Valid, 50045 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2287.37ms IncrementalHoareTripleChecker+Time [2021-11-07 18:56:08,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16591 Valid, 50045 Invalid, 10 Unknown, 0 Unchecked, 58.25ms Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2287.37ms Time] [2021-11-07 18:56:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41628 states. [2021-11-07 18:56:10,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41628 to 41628. [2021-11-07 18:56:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41628 states, 41624 states have (on average 1.1990438208725736) internal successors, (49909), 41627 states have internal predecessors, (49909), 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 18:56:10,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41628 states to 41628 states and 49909 transitions. [2021-11-07 18:56:10,209 INFO L78 Accepts]: Start accepts. Automaton has 41628 states and 49909 transitions. Word has length 76 [2021-11-07 18:56:10,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:56:10,215 INFO L470 AbstractCegarLoop]: Abstraction has 41628 states and 49909 transitions. [2021-11-07 18:56:10,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:56:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 41628 states and 49909 transitions. [2021-11-07 18:56:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 18:56:10,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:56:10,223 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 18:56:10,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 18:56:10,224 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 18:56:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:56:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1069182534, now seen corresponding path program 1 times [2021-11-07 18:56:10,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:56:10,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151260458] [2021-11-07 18:56:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:56:10,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:56:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:56:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 18:56:10,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:56:10,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151260458] [2021-11-07 18:56:10,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151260458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:56:10,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:56:10,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:56:10,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365795035] [2021-11-07 18:56:10,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:56:10,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 18:56:10,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:56:10,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 18:56:10,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 18:56:10,570 INFO L87 Difference]: Start difference. First operand 41628 states and 49909 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:56:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:56:11,983 INFO L93 Difference]: Finished difference Result 83156 states and 99706 transitions. [2021-11-07 18:56:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 18:56:11,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 18:56:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:56:12,244 INFO L225 Difference]: With dead ends: 83156 [2021-11-07 18:56:12,245 INFO L226 Difference]: Without dead ends: 83152 [2021-11-07 18:56:12,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 18:56:12,301 INFO L933 BasicCegarLoop]: 16818 mSDtfsCounter, 16653 mSDsluCounter, 33421 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16653 SdHoareTripleChecker+Valid, 50239 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.12ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.29ms IncrementalHoareTripleChecker+Time [2021-11-07 18:56:12,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16653 Valid, 50239 Invalid, 41 Unknown, 0 Unchecked, 60.12ms Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 172.29ms Time] [2021-11-07 18:56:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83152 states. [2021-11-07 18:56:13,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83152 to 83144. [2021-11-07 18:56:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83144 states, 83140 states have (on average 1.1991339908587924) internal successors, (99696), 83143 states have internal predecessors, (99696), 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 18:56:14,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83144 states to 83144 states and 99696 transitions. [2021-11-07 18:56:14,350 INFO L78 Accepts]: Start accepts. Automaton has 83144 states and 99696 transitions. Word has length 76 [2021-11-07 18:56:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:56:14,351 INFO L470 AbstractCegarLoop]: Abstraction has 83144 states and 99696 transitions. [2021-11-07 18:56:14,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 18:56:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 83144 states and 99696 transitions. [2021-11-07 18:56:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 18:56:14,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:56:14,358 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 18:56:14,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 18:56:14,358 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 18:56:14,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:56:14,359 INFO L85 PathProgramCache]: Analyzing trace with hash -987091907, now seen corresponding path program 1 times [2021-11-07 18:56:14,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:56:14,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647477312] [2021-11-07 18:56:14,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:56:14,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:56:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:56:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 18:56:14,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:56:14,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647477312] [2021-11-07 18:56:14,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647477312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:56:14,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:56:14,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:56:14,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391128532] [2021-11-07 18:56:14,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:56:14,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 18:56:14,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:56:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 18:56:14,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 18:56:14,637 INFO L87 Difference]: Start difference. First operand 83144 states and 99696 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:56:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:56:15,934 INFO L93 Difference]: Finished difference Result 83144 states and 99696 transitions. [2021-11-07 18:56:15,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 18:56:15,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 18:56:15,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:56:16,128 INFO L225 Difference]: With dead ends: 83144 [2021-11-07 18:56:16,128 INFO L226 Difference]: Without dead ends: 83120 [2021-11-07 18:56:16,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 18:56:16,167 INFO L933 BasicCegarLoop]: 16740 mSDtfsCounter, 16624 mSDsluCounter, 16734 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16624 SdHoareTripleChecker+Valid, 33474 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.11ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.31ms IncrementalHoareTripleChecker+Time [2021-11-07 18:56:16,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16624 Valid, 33474 Invalid, 58 Unknown, 0 Unchecked, 31.11ms Time], IncrementalHoareTripleChecker [52 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 114.31ms Time] [2021-11-07 18:56:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83120 states. [2021-11-07 18:56:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83120 to 83120. [2021-11-07 18:56:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83120 states, 83118 states have (on average 1.1991265429870785) internal successors, (99669), 83119 states have internal predecessors, (99669), 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 18:56:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83120 states to 83120 states and 99669 transitions. [2021-11-07 18:56:18,399 INFO L78 Accepts]: Start accepts. Automaton has 83120 states and 99669 transitions. Word has length 78 [2021-11-07 18:56:18,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:56:18,400 INFO L470 AbstractCegarLoop]: Abstraction has 83120 states and 99669 transitions. [2021-11-07 18:56:18,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:56:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 83120 states and 99669 transitions. [2021-11-07 18:56:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-07 18:56:18,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:56:18,512 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:18,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 18:56:18,513 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 18:56:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:56:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash -577059934, now seen corresponding path program 1 times [2021-11-07 18:56:18,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:56:18,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322889283] [2021-11-07 18:56:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:56:18,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:56:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:56:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 18:56:18,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:56:18,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322889283] [2021-11-07 18:56:18,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322889283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:56:18,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:56:18,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:56:18,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856554833] [2021-11-07 18:56:18,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:56:18,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:56:18,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:56:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:56:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:56:18,817 INFO L87 Difference]: Start difference. First operand 83120 states and 99669 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 18:56:20,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:56:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:56:23,437 INFO L93 Difference]: Finished difference Result 171898 states and 206539 transitions. [2021-11-07 18:56:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:56:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 223 [2021-11-07 18:56:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:56:23,629 INFO L225 Difference]: With dead ends: 171898 [2021-11-07 18:56:23,630 INFO L226 Difference]: Without dead ends: 88878 [2021-11-07 18:56:23,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:56:23,769 INFO L933 BasicCegarLoop]: 16707 mSDtfsCounter, 1188 mSDsluCounter, 16643 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2524.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 33350 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.63ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2770.33ms IncrementalHoareTripleChecker+Time [2021-11-07 18:56:23,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 33350 Invalid, 153 Unknown, 0 Unchecked, 21.63ms Time], IncrementalHoareTripleChecker [31 Valid, 121 Invalid, 1 Unknown, 0 Unchecked, 2770.33ms Time] [2021-11-07 18:56:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88878 states. [2021-11-07 18:56:25,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88878 to 88822. [2021-11-07 18:56:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88822 states, 88820 states have (on average 1.2019139833370862) internal successors, (106754), 88821 states have internal predecessors, (106754), 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 18:56:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88822 states to 88822 states and 106754 transitions. [2021-11-07 18:56:25,994 INFO L78 Accepts]: Start accepts. Automaton has 88822 states and 106754 transitions. Word has length 223 [2021-11-07 18:56:25,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:56:25,994 INFO L470 AbstractCegarLoop]: Abstraction has 88822 states and 106754 transitions. [2021-11-07 18:56:25,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 18:56:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 88822 states and 106754 transitions. [2021-11-07 18:56:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-07 18:56:26,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:56:26,068 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:26,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 18:56:26,069 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 18:56:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:56:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1881725157, now seen corresponding path program 1 times [2021-11-07 18:56:26,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:56:26,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732435857] [2021-11-07 18:56:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:56:26,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:56:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:56:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 18:56:26,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:56:26,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732435857] [2021-11-07 18:56:26,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732435857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:56:26,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:56:26,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:56:26,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31469838] [2021-11-07 18:56:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:56:26,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:56:26,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:56:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:56:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:56:26,327 INFO L87 Difference]: Start difference. First operand 88822 states and 106754 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 18:56:28,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:56:31,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:56:31,160 INFO L93 Difference]: Finished difference Result 203532 states and 244709 transitions. [2021-11-07 18:56:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:56:31,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 229 [2021-11-07 18:56:31,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:56:31,388 INFO L225 Difference]: With dead ends: 203532 [2021-11-07 18:56:31,389 INFO L226 Difference]: Without dead ends: 114374 [2021-11-07 18:56:31,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:56:31,520 INFO L933 BasicCegarLoop]: 32138 mSDtfsCounter, 15960 mSDsluCounter, 16685 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2452.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15960 SdHoareTripleChecker+Valid, 48823 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.54ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2630.38ms IncrementalHoareTripleChecker+Time [2021-11-07 18:56:31,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15960 Valid, 48823 Invalid, 76 Unknown, 0 Unchecked, 33.54ms Time], IncrementalHoareTripleChecker [14 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2630.38ms Time] [2021-11-07 18:56:31,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114374 states.