./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 039eab12e50993f4fa37adc6de2fecb3561458fa83d70d097739d1ded7d4af34 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 08:20:49,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 08:20:49,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 08:20:49,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 08:20:49,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 08:20:49,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 08:20:49,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 08:20:49,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 08:20:49,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 08:20:49,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 08:20:49,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 08:20:49,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 08:20:49,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 08:20:49,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 08:20:49,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 08:20:49,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 08:20:49,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 08:20:49,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 08:20:49,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 08:20:49,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 08:20:49,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 08:20:49,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 08:20:49,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 08:20:49,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 08:20:49,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 08:20:49,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 08:20:49,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 08:20:49,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 08:20:49,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 08:20:49,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 08:20:49,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 08:20:49,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 08:20:49,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 08:20:49,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 08:20:49,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 08:20:49,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 08:20:49,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 08:20:49,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 08:20:49,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 08:20:49,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 08:20:49,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 08:20:49,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 08:20:49,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 08:20:49,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 08:20:49,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 08:20:49,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 08:20:49,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 08:20:49,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 08:20:49,649 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 08:20:49,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 08:20:49,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 08:20:49,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 08:20:49,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 08:20:49,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 08:20:49,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 08:20:49,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 08:20:49,651 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 08:20:49,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 08:20:49,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 08:20:49,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 08:20:49,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 08:20:49,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:20:49,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 08:20:49,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 08:20:49,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 08:20:49,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 08:20:49,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 08:20:49,653 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 08:20:49,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 08:20:49,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 08:20:49,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 08:20:49,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039eab12e50993f4fa37adc6de2fecb3561458fa83d70d097739d1ded7d4af34 [2021-11-04 08:20:49,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 08:20:49,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 08:20:49,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 08:20:49,887 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 08:20:49,889 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 08:20:49,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-04 08:20:49,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486c4ac34/af0873e0533049ce838083e03a70a268/FLAG1c5f45984 [2021-11-04 08:20:50,805 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 08:20:50,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-04 08:20:50,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486c4ac34/af0873e0533049ce838083e03a70a268/FLAG1c5f45984 [2021-11-04 08:20:50,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486c4ac34/af0873e0533049ce838083e03a70a268 [2021-11-04 08:20:50,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 08:20:50,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 08:20:50,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 08:20:50,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 08:20:50,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 08:20:50,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:20:50" (1/1) ... [2021-11-04 08:20:50,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25147ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:50, skipping insertion in model container [2021-11-04 08:20:50,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:20:50" (1/1) ... [2021-11-04 08:20:50,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 08:20:51,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 08:20:54,483 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[485718,485731] [2021-11-04 08:20:54,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:20:54,664 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 08:20:55,106 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[485718,485731] [2021-11-04 08:20:55,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:20:55,355 INFO L208 MainTranslator]: Completed translation [2021-11-04 08:20:55,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55 WrapperNode [2021-11-04 08:20:55,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 08:20:55,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 08:20:55,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 08:20:55,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 08:20:55,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:55,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:56,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 08:20:56,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 08:20:56,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 08:20:56,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 08:20:56,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:56,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:57,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:57,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:57,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:57,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:58,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:58,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 08:20:58,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 08:20:58,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 08:20:58,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 08:20:58,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (1/1) ... [2021-11-04 08:20:58,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:20:58,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:20:58,312 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) [2021-11-04 08:20:58,327 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 [2021-11-04 08:20:58,349 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-04 08:20:58,350 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-04 08:20:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-04 08:20:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-04 08:20:58,350 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-04 08:20:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 08:20:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 08:20:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 08:20:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 08:20:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 08:20:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-04 08:20:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 08:20:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 08:20:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 08:20:58,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 08:20:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 08:20:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 08:20:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 08:20:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 08:20:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 08:20:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 08:20:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 08:21:10,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 08:21:10,696 INFO L299 CfgBuilder]: Removed 7570 assume(true) statements. [2021-11-04 08:21:10,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:21:10 BoogieIcfgContainer [2021-11-04 08:21:10,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 08:21:10,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 08:21:10,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 08:21:10,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 08:21:10,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:20:50" (1/3) ... [2021-11-04 08:21:10,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16215af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:21:10, skipping insertion in model container [2021-11-04 08:21:10,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:20:55" (2/3) ... [2021-11-04 08:21:10,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16215af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:21:10, skipping insertion in model container [2021-11-04 08:21:10,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:21:10" (3/3) ... [2021-11-04 08:21:10,713 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-04 08:21:10,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 08:21:10,718 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2021-11-04 08:21:10,784 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 08:21:10,789 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 [2021-11-04 08:21:10,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2021-11-04 08:21:10,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 8185 states, 8122 states have (on average 1.3697365180989904) internal successors, (11125), 8162 states have internal predecessors, (11125), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-04 08:21:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-04 08:21:10,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:21:10,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:21:10,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 08:21:10,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:21:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1238528597, now seen corresponding path program 1 times [2021-11-04 08:21:10,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:21:10,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310960498] [2021-11-04 08:21:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:21:10,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:21:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:21:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:21:11,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:21:11,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310960498] [2021-11-04 08:21:11,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310960498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:21:11,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:21:11,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 08:21:11,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754059474] [2021-11-04 08:21:11,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:21:11,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 08:21:11,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:21:11,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 08:21:11,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:21:11,802 INFO L87 Difference]: Start difference. First operand has 8185 states, 8122 states have (on average 1.3697365180989904) internal successors, (11125), 8162 states have internal predecessors, (11125), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:21:14,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:21:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:21:39,826 INFO L93 Difference]: Finished difference Result 16366 states and 22325 transitions. [2021-11-04 08:21:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 08:21:39,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-04 08:21:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:21:39,879 INFO L225 Difference]: With dead ends: 16366 [2021-11-04 08:21:39,879 INFO L226 Difference]: Without dead ends: 7639 [2021-11-04 08:21:39,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:21:39,908 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10456 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24741.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 10457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10456 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27349.90ms IncrementalHoareTripleChecker+Time [2021-11-04 08:21:39,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 10457 Unknown, 0 Unchecked, 33.97ms Time], IncrementalHoareTripleChecker [0 Valid, 10456 Invalid, 1 Unknown, 0 Unchecked, 27349.90ms Time] [2021-11-04 08:21:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7639 states. [2021-11-04 08:21:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7639 to 7639. [2021-11-04 08:21:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7639 states, 7577 states have (on average 1.3079055034974265) internal successors, (9910), 7616 states have internal predecessors, (9910), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-04 08:21:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7639 states to 7639 states and 9950 transitions. [2021-11-04 08:21:40,432 INFO L78 Accepts]: Start accepts. Automaton has 7639 states and 9950 transitions. Word has length 46 [2021-11-04 08:21:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:21:40,432 INFO L470 AbstractCegarLoop]: Abstraction has 7639 states and 9950 transitions. [2021-11-04 08:21:40,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:21:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7639 states and 9950 transitions. [2021-11-04 08:21:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-04 08:21:40,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:21:40,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:21:40,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 08:21:40,438 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 08:21:40,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:21:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash 481683929, now seen corresponding path program 1 times [2021-11-04 08:21:40,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:21:40,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046038484] [2021-11-04 08:21:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:21:40,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:21:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:21:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:21:41,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:21:41,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046038484] [2021-11-04 08:21:41,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046038484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:21:41,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:21:41,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:21:41,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838554821] [2021-11-04 08:21:41,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:21:41,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:21:41,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:21:41,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:21:41,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:21:41,008 INFO L87 Difference]: Start difference. First operand 7639 states and 9950 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:21:43,206 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 [] [2021-11-04 08:22:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:22:34,106 INFO L93 Difference]: Finished difference Result 15272 states and 19895 transitions. [2021-11-04 08:22:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:22:34,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-04 08:22:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:22:34,138 INFO L225 Difference]: With dead ends: 15272 [2021-11-04 08:22:34,138 INFO L226 Difference]: Without dead ends: 7641 [2021-11-04 08:22:34,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:22:34,157 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 9874 mSDsCounter, 0 mSdLazyCounter, 19816 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47995.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 19819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 94.10ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19816 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52287.15ms IncrementalHoareTripleChecker+Time [2021-11-04 08:22:34,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 19819 Unknown, 0 Unchecked, 94.10ms Time], IncrementalHoareTripleChecker [2 Valid, 19816 Invalid, 1 Unknown, 0 Unchecked, 52287.15ms Time] [2021-11-04 08:22:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7641 states. [2021-11-04 08:22:34,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7641 to 7641. [2021-11-04 08:22:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7641 states, 7579 states have (on average 1.3078242512204776) internal successors, (9912), 7618 states have internal predecessors, (9912), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-04 08:22:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7641 states to 7641 states and 9952 transitions. [2021-11-04 08:22:34,381 INFO L78 Accepts]: Start accepts. Automaton has 7641 states and 9952 transitions. Word has length 46 [2021-11-04 08:22:34,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:22:34,382 INFO L470 AbstractCegarLoop]: Abstraction has 7641 states and 9952 transitions. [2021-11-04 08:22:34,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:22:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 7641 states and 9952 transitions. [2021-11-04 08:22:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-04 08:22:34,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:22:34,391 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] [2021-11-04 08:22:34,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 08:22:34,392 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 08:22:34,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:22:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1499542059, now seen corresponding path program 1 times [2021-11-04 08:22:34,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:22:34,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332803619] [2021-11-04 08:22:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:22:34,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:22:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:22:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:22:34,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:22:34,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332803619] [2021-11-04 08:22:34,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332803619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:22:34,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:22:34,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:22:34,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553825525] [2021-11-04 08:22:34,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:22:34,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:22:34,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:22:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:22:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:22:34,885 INFO L87 Difference]: Start difference. First operand 7641 states and 9952 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-04 08:22:37,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:23:34,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:23:34,596 INFO L93 Difference]: Finished difference Result 20781 states and 27044 transitions. [2021-11-04 08:23:34,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:23:34,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-04 08:23:34,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:23:34,640 INFO L225 Difference]: With dead ends: 20781 [2021-11-04 08:23:34,641 INFO L226 Difference]: Without dead ends: 13154 [2021-11-04 08:23:34,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:23:34,655 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 7788 mSDsluCounter, 9240 mSDsCounter, 0 mSdLazyCounter, 19159 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52835.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7788 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 19178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 86.49ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 19159 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58745.65ms IncrementalHoareTripleChecker+Time [2021-11-04 08:23:34,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7788 Valid, 93 Invalid, 19178 Unknown, 0 Unchecked, 86.49ms Time], IncrementalHoareTripleChecker [18 Valid, 19159 Invalid, 1 Unknown, 0 Unchecked, 58745.65ms Time] [2021-11-04 08:23:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13154 states. [2021-11-04 08:23:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13154 to 12875. [2021-11-04 08:23:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12875 states, 12799 states have (on average 1.3069771075865302) internal successors, (16728), 12839 states have internal predecessors, (16728), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-04 08:23:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12875 states to 12875 states and 16794 transitions. [2021-11-04 08:23:34,924 INFO L78 Accepts]: Start accepts. Automaton has 12875 states and 16794 transitions. Word has length 48 [2021-11-04 08:23:34,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:23:34,925 INFO L470 AbstractCegarLoop]: Abstraction has 12875 states and 16794 transitions. [2021-11-04 08:23:34,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-04 08:23:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12875 states and 16794 transitions. [2021-11-04 08:23:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-04 08:23:34,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:23:34,931 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] [2021-11-04 08:23:34,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 08:23:34,932 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 08:23:34,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:23:34,932 INFO L85 PathProgramCache]: Analyzing trace with hash -408425480, now seen corresponding path program 1 times [2021-11-04 08:23:34,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:23:34,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327162718] [2021-11-04 08:23:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:23:34,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:23:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:23:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 08:23:35,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:23:35,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327162718] [2021-11-04 08:23:35,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327162718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:23:35,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:23:35,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:23:35,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651306819] [2021-11-04 08:23:35,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:23:35,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:23:35,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:23:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:23:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:23:35,366 INFO L87 Difference]: Start difference. First operand 12875 states and 16794 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:23:37,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:25:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:25:40,890 INFO L93 Difference]: Finished difference Result 53595 states and 70050 transitions. [2021-11-04 08:25:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:25:40,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-04 08:25:40,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:25:41,003 INFO L225 Difference]: With dead ends: 53595 [2021-11-04 08:25:41,003 INFO L226 Difference]: Without dead ends: 40734 [2021-11-04 08:25:41,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:25:41,046 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 16354 mSDsluCounter, 20005 mSDsCounter, 0 mSdLazyCounter, 42990 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110762.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16372 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 43029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 179.66ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 42990 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123322.22ms IncrementalHoareTripleChecker+Time [2021-11-04 08:25:41,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16372 Valid, 268 Invalid, 43029 Unknown, 0 Unchecked, 179.66ms Time], IncrementalHoareTripleChecker [38 Valid, 42990 Invalid, 1 Unknown, 0 Unchecked, 123322.22ms Time] [2021-11-04 08:25:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40734 states. [2021-11-04 08:25:41,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40734 to 20980. [2021-11-04 08:25:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20980 states, 20868 states have (on average 1.310379528464635) internal successors, (27345), 20909 states have internal predecessors, (27345), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-04 08:25:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20980 states to 20980 states and 27477 transitions. [2021-11-04 08:25:41,740 INFO L78 Accepts]: Start accepts. Automaton has 20980 states and 27477 transitions. Word has length 68 [2021-11-04 08:25:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:25:41,742 INFO L470 AbstractCegarLoop]: Abstraction has 20980 states and 27477 transitions. [2021-11-04 08:25:41,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:25:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 20980 states and 27477 transitions. [2021-11-04 08:25:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-04 08:25:41,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:25:41,750 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] [2021-11-04 08:25:41,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 08:25:41,750 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 08:25:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:25:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash 327214119, now seen corresponding path program 1 times [2021-11-04 08:25:41,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:25:41,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119871801] [2021-11-04 08:25:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:25:41,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:25:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:25:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 08:25:42,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:25:42,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119871801] [2021-11-04 08:25:42,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119871801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:25:42,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:25:42,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:25:42,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194273163] [2021-11-04 08:25:42,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:25:42,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:25:42,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:25:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:25:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:25:42,194 INFO L87 Difference]: Start difference. First operand 20980 states and 27477 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-04 08:25:44,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:27:44,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:27:44,340 INFO L93 Difference]: Finished difference Result 93958 states and 123223 transitions. [2021-11-04 08:27:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:27:44,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-04 08:27:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:27:44,526 INFO L225 Difference]: With dead ends: 93958 [2021-11-04 08:27:44,526 INFO L226 Difference]: Without dead ends: 72992 [2021-11-04 08:27:44,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:27:44,602 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 22757 mSDsluCounter, 19895 mSDsCounter, 0 mSdLazyCounter, 36492 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105293.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22775 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 36533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 195.16ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 36492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119418.54ms IncrementalHoareTripleChecker+Time [2021-11-04 08:27:44,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22775 Valid, 232 Invalid, 36533 Unknown, 0 Unchecked, 195.16ms Time], IncrementalHoareTripleChecker [40 Valid, 36492 Invalid, 1 Unknown, 0 Unchecked, 119418.54ms Time] [2021-11-04 08:27:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72992 states. [2021-11-04 08:27:45,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72992 to 40700. [2021-11-04 08:27:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40700 states, 40516 states have (on average 1.3109142067331425) internal successors, (53113), 40559 states have internal predecessors, (53113), 132 states have call successors, (132), 12 states have call predecessors, (132), 12 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-04 08:27:46,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40700 states to 40700 states and 53377 transitions. [2021-11-04 08:27:46,031 INFO L78 Accepts]: Start accepts. Automaton has 40700 states and 53377 transitions. Word has length 69 [2021-11-04 08:27:46,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:27:46,032 INFO L470 AbstractCegarLoop]: Abstraction has 40700 states and 53377 transitions. [2021-11-04 08:27:46,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-04 08:27:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 40700 states and 53377 transitions. [2021-11-04 08:27:46,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-04 08:27:46,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:27:46,044 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] [2021-11-04 08:27:46,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 08:27:46,044 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 08:27:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:27:46,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1657207288, now seen corresponding path program 1 times [2021-11-04 08:27:46,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:27:46,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96131114] [2021-11-04 08:27:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:27:46,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:27:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:27:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 08:27:46,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:27:46,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96131114] [2021-11-04 08:27:46,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96131114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:27:46,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:27:46,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:27:46,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421877212] [2021-11-04 08:27:46,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:27:46,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:27:46,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:27:46,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:27:46,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:27:46,451 INFO L87 Difference]: Start difference. First operand 40700 states and 53377 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-04 08:27:48,601 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 [] [2021-11-04 08:29:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:29:58,110 INFO L93 Difference]: Finished difference Result 184072 states and 241681 transitions. [2021-11-04 08:29:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:29:58,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-04 08:29:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:29:58,561 INFO L225 Difference]: With dead ends: 184072 [2021-11-04 08:29:58,561 INFO L226 Difference]: Without dead ends: 143386 [2021-11-04 08:29:58,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:29:58,628 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 22763 mSDsluCounter, 19895 mSDsCounter, 0 mSdLazyCounter, 36491 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110990.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22781 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 36532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 191.37ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 36491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127882.64ms IncrementalHoareTripleChecker+Time [2021-11-04 08:29:58,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22781 Valid, 232 Invalid, 36532 Unknown, 0 Unchecked, 191.37ms Time], IncrementalHoareTripleChecker [40 Valid, 36491 Invalid, 1 Unknown, 0 Unchecked, 127882.64ms Time] [2021-11-04 08:29:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143386 states. [2021-11-04 08:30:00,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143386 to 78980. [2021-11-04 08:30:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78980 states, 78652 states have (on average 1.311358897421553) internal successors, (103141), 78699 states have internal predecessors, (103141), 264 states have call successors, (264), 24 states have call predecessors, (264), 24 states have return successors, (264), 256 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-04 08:30:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78980 states to 78980 states and 103669 transitions. [2021-11-04 08:30:00,793 INFO L78 Accepts]: Start accepts. Automaton has 78980 states and 103669 transitions. Word has length 70 [2021-11-04 08:30:00,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:30:00,793 INFO L470 AbstractCegarLoop]: Abstraction has 78980 states and 103669 transitions. [2021-11-04 08:30:00,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-04 08:30:00,794 INFO L276 IsEmpty]: Start isEmpty. Operand 78980 states and 103669 transitions. [2021-11-04 08:30:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-04 08:30:00,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:30:00,799 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] [2021-11-04 08:30:00,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 08:30:00,799 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 08:30:00,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:30:00,800 INFO L85 PathProgramCache]: Analyzing trace with hash -62675353, now seen corresponding path program 1 times [2021-11-04 08:30:00,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:30:00,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142874799] [2021-11-04 08:30:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:30:00,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:30:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:30:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 08:30:01,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:30:01,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142874799] [2021-11-04 08:30:01,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142874799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:30:01,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:30:01,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:30:01,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463796735] [2021-11-04 08:30:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:30:01,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:30:01,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:30:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:30:01,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:30:01,419 INFO L87 Difference]: Start difference. First operand 78980 states and 103669 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) [2021-11-04 08:30:03,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:32:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:32:22,145 INFO L93 Difference]: Finished difference Result 360812 states and 474049 transitions. [2021-11-04 08:32:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:32:22,145 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 71 [2021-11-04 08:32:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:32:22,906 INFO L225 Difference]: With dead ends: 360812 [2021-11-04 08:32:22,906 INFO L226 Difference]: Without dead ends: 281846 [2021-11-04 08:32:23,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:32:23,034 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 22773 mSDsluCounter, 19897 mSDsCounter, 0 mSdLazyCounter, 36488 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114542.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22791 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 36529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 201.17ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 36488 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134375.01ms IncrementalHoareTripleChecker+Time [2021-11-04 08:32:23,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22791 Valid, 232 Invalid, 36529 Unknown, 0 Unchecked, 201.17ms Time], IncrementalHoareTripleChecker [40 Valid, 36488 Invalid, 1 Unknown, 0 Unchecked, 134375.01ms Time] [2021-11-04 08:32:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281846 states. [2021-11-04 08:32:26,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281846 to 153218. [2021-11-04 08:32:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153218 states, 152602 states have (on average 1.3117586925466245) internal successors, (200177), 152657 states have internal predecessors, (200177), 528 states have call successors, (528), 48 states have call predecessors, (528), 48 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) [2021-11-04 08:32:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153218 states to 153218 states and 201233 transitions. [2021-11-04 08:32:27,878 INFO L78 Accepts]: Start accepts. Automaton has 153218 states and 201233 transitions. Word has length 71 [2021-11-04 08:32:27,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:32:27,878 INFO L470 AbstractCegarLoop]: Abstraction has 153218 states and 201233 transitions. [2021-11-04 08:32:27,879 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) [2021-11-04 08:32:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 153218 states and 201233 transitions. [2021-11-04 08:32:27,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-04 08:32:27,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:32:27,884 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] [2021-11-04 08:32:27,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 08:32:27,885 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 08:32:27,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:32:27,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1285999798, now seen corresponding path program 1 times [2021-11-04 08:32:27,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:32:27,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501333004] [2021-11-04 08:32:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:27,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:32:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-04 08:32:28,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:32:28,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501333004] [2021-11-04 08:32:28,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501333004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:32:28,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:32:28,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 08:32:28,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812326659] [2021-11-04 08:32:28,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:32:28,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 08:32:28,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:32:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 08:32:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:32:28,540 INFO L87 Difference]: Start difference. First operand 153218 states and 201233 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 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) [2021-11-04 08:32:30,692 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 [] Killed by 15