./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.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 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:35:11,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:35:11,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:35:11,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:35:11,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:35:11,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:35:11,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:35:11,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:35:11,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:35:11,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:35:11,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:35:11,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:35:11,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:35:11,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:35:11,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:35:11,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:35:11,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:35:11,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:35:11,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:35:11,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:35:11,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:35:11,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:35:11,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:35:11,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:35:11,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:35:11,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:35:11,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:35:11,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:35:11,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:35:11,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:35:11,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:35:11,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:35:11,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:35:11,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:35:11,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:35:11,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:35:11,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:35:11,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:35:11,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:35:11,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:35:11,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:35:11,404 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:35:11,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:35:11,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:35:11,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:35:11,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:35:11,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:35:11,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:35:11,439 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:35:11,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:35:11,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:35:11,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:35:11,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:35:11,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:35:11,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:35:11,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:35:11,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:35:11,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:35:11,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:35:11,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:35:11,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:35:11,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:35:11,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:35:11,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:35:11,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:35:11,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:35:11,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:35:11,443 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:35:11,443 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:35:11,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:35:11,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:35:11,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 [2021-11-07 16:35:11,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:35:11,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:35:11,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:35:11,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:35:11,639 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:35:11,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-07 16:35:11,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0985771b9/7b0d9eca8e3046358be4e09301924fec/FLAG834b1ab17 [2021-11-07 16:35:12,280 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:35:12,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-07 16:35:12,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0985771b9/7b0d9eca8e3046358be4e09301924fec/FLAG834b1ab17 [2021-11-07 16:35:12,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0985771b9/7b0d9eca8e3046358be4e09301924fec [2021-11-07 16:35:12,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:35:12,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:35:12,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:35:12,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:35:12,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:35:12,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:35:12" (1/1) ... [2021-11-07 16:35:12,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48eb89d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:12, skipping insertion in model container [2021-11-07 16:35:12,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:35:12" (1/1) ... [2021-11-07 16:35:12,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:35:12,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:35:14,110 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2021-11-07 16:35:14,112 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2021-11-07 16:35:14,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:35:14,170 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:35:14,417 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2021-11-07 16:35:14,418 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2021-11-07 16:35:14,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:35:14,545 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:35:14,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14 WrapperNode [2021-11-07 16:35:14,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:35:14,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:35:14,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:35:14,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:35:14,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:14,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:15,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:35:15,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:35:15,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:35:15,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:35:15,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:15,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:15,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:15,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:15,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:15,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:15,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:15,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:35:15,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:35:15,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:35:15,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:35:15,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (1/1) ... [2021-11-07 16:35:15,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:35:15,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:35:15,813 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 16:35:15,833 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 16:35:15,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:35:15,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:35:15,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:35:15,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:35:15,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:35:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:35:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 16:35:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:35:15,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:35:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:35:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:35:15,870 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 16:35:15,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:35:15,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:35:15,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:35:15,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:35:15,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:35:39,995 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 16:35:39,996 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 16:35:39,996 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 16:35:39,996 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 16:35:39,997 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 16:35:39,997 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 16:35:40,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:35:40,023 INFO L299 CfgBuilder]: Removed 4397 assume(true) statements. [2021-11-07 16:35:40,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:35:40 BoogieIcfgContainer [2021-11-07 16:35:40,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:35:40,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:35:40,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:35:40,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:35:40,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:35:12" (1/3) ... [2021-11-07 16:35:40,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7130d40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:35:40, skipping insertion in model container [2021-11-07 16:35:40,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:35:14" (2/3) ... [2021-11-07 16:35:40,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7130d40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:35:40, skipping insertion in model container [2021-11-07 16:35:40,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:35:40" (3/3) ... [2021-11-07 16:35:40,033 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-07 16:35:40,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:35:40,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-07 16:35:40,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:35:40,085 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 16:35:40,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-07 16:35:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 3863 states, 3855 states have (on average 1.3156939040207523) internal successors, (5072), 3862 states have internal predecessors, (5072), 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 16:35:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 16:35:40,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:35:40,147 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] [2021-11-07 16:35:40,148 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:35:40,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:35:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1508043732, now seen corresponding path program 1 times [2021-11-07 16:35:40,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:35:40,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862646825] [2021-11-07 16:35:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:35:40,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:35:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:35:40,725 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 16:35:40,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:35:40,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862646825] [2021-11-07 16:35:40,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862646825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:35:40,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:35:40,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:35:40,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829929533] [2021-11-07 16:35:40,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:35:40,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:35:40,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:35:40,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:35:40,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:40,763 INFO L87 Difference]: Start difference. First operand has 3863 states, 3855 states have (on average 1.3156939040207523) internal successors, (5072), 3862 states have internal predecessors, (5072), 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 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:35:42,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:35:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:35:43,335 INFO L93 Difference]: Finished difference Result 10779 states and 14115 transitions. [2021-11-07 16:35:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:35:43,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 16:35:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:35:43,368 INFO L225 Difference]: With dead ends: 10779 [2021-11-07 16:35:43,369 INFO L226 Difference]: Without dead ends: 6671 [2021-11-07 16:35:43,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:43,382 INFO L933 BasicCegarLoop]: 4980 mSDtfsCounter, 4375 mSDsluCounter, 4662 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2192.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4375 SdHoareTripleChecker+Valid, 9642 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.59ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2335.51ms IncrementalHoareTripleChecker+Time [2021-11-07 16:35:43,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4375 Valid, 9642 Invalid, 44 Unknown, 0 Unchecked, 24.59ms Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2335.51ms Time] [2021-11-07 16:35:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6671 states. [2021-11-07 16:35:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6671 to 6496. [2021-11-07 16:35:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6496 states, 6488 states have (on average 1.2763563501849569) internal successors, (8281), 6495 states have internal predecessors, (8281), 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 16:35:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6496 states to 6496 states and 8281 transitions. [2021-11-07 16:35:43,552 INFO L78 Accepts]: Start accepts. Automaton has 6496 states and 8281 transitions. Word has length 60 [2021-11-07 16:35:43,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:35:43,552 INFO L470 AbstractCegarLoop]: Abstraction has 6496 states and 8281 transitions. [2021-11-07 16:35:43,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:35:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6496 states and 8281 transitions. [2021-11-07 16:35:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 16:35:43,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:35:43,556 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] [2021-11-07 16:35:43,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:35:43,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:35:43,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:35:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1589939729, now seen corresponding path program 1 times [2021-11-07 16:35:43,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:35:43,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84297632] [2021-11-07 16:35:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:35:43,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:35:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:35:43,795 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 16:35:43,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:35:43,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84297632] [2021-11-07 16:35:43,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84297632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:35:43,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:35:43,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:35:43,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308282944] [2021-11-07 16:35:43,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:35:43,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:35:43,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:35:43,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:35:43,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:43,799 INFO L87 Difference]: Start difference. First operand 6496 states and 8281 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:35:45,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:35:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:35:46,577 INFO L93 Difference]: Finished difference Result 15026 states and 19212 transitions. [2021-11-07 16:35:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:35:46,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 16:35:46,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:35:46,602 INFO L225 Difference]: With dead ends: 15026 [2021-11-07 16:35:46,603 INFO L226 Difference]: Without dead ends: 8598 [2021-11-07 16:35:46,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:46,619 INFO L933 BasicCegarLoop]: 5117 mSDtfsCounter, 1573 mSDsluCounter, 4608 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2295.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 9725 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.19ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2456.56ms IncrementalHoareTripleChecker+Time [2021-11-07 16:35:46,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 9725 Invalid, 88 Unknown, 0 Unchecked, 11.19ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2456.56ms Time] [2021-11-07 16:35:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8598 states. [2021-11-07 16:35:46,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8598 to 8584. [2021-11-07 16:35:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8584 states, 8576 states have (on average 1.2784514925373134) internal successors, (10964), 8583 states have internal predecessors, (10964), 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 16:35:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8584 states to 8584 states and 10964 transitions. [2021-11-07 16:35:46,811 INFO L78 Accepts]: Start accepts. Automaton has 8584 states and 10964 transitions. Word has length 67 [2021-11-07 16:35:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:35:46,811 INFO L470 AbstractCegarLoop]: Abstraction has 8584 states and 10964 transitions. [2021-11-07 16:35:46,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:35:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8584 states and 10964 transitions. [2021-11-07 16:35:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 16:35:46,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:35:46,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:35:46,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:35:46,814 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:35:46,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:35:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1381844700, now seen corresponding path program 1 times [2021-11-07 16:35:46,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:35:46,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076863449] [2021-11-07 16:35:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:35:46,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:35:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:35:47,002 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 16:35:47,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:35:47,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076863449] [2021-11-07 16:35:47,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076863449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:35:47,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:35:47,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:35:47,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639765912] [2021-11-07 16:35:47,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:35:47,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:35:47,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:35:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:35:47,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:47,007 INFO L87 Difference]: Start difference. First operand 8584 states and 10964 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 16:35:49,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:35:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:35:49,624 INFO L93 Difference]: Finished difference Result 23010 states and 29439 transitions. [2021-11-07 16:35:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:35:49,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 16:35:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:35:49,670 INFO L225 Difference]: With dead ends: 23010 [2021-11-07 16:35:49,670 INFO L226 Difference]: Without dead ends: 14494 [2021-11-07 16:35:49,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:49,687 INFO L933 BasicCegarLoop]: 4654 mSDtfsCounter, 3746 mSDsluCounter, 4591 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2264.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 9245 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.78ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2379.59ms IncrementalHoareTripleChecker+Time [2021-11-07 16:35:49,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 9245 Invalid, 80 Unknown, 0 Unchecked, 10.78ms Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2379.59ms Time] [2021-11-07 16:35:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14494 states. [2021-11-07 16:35:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14494 to 14210. [2021-11-07 16:35:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14210 states, 14202 states have (on average 1.2810871708210112) internal successors, (18194), 14209 states have internal predecessors, (18194), 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 16:35:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14210 states to 14210 states and 18194 transitions. [2021-11-07 16:35:50,025 INFO L78 Accepts]: Start accepts. Automaton has 14210 states and 18194 transitions. Word has length 75 [2021-11-07 16:35:50,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:35:50,026 INFO L470 AbstractCegarLoop]: Abstraction has 14210 states and 18194 transitions. [2021-11-07 16:35:50,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 16:35:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 14210 states and 18194 transitions. [2021-11-07 16:35:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 16:35:50,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:35:50,031 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 16:35:50,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:35:50,031 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:35:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:35:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1681614129, now seen corresponding path program 1 times [2021-11-07 16:35:50,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:35:50,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037342511] [2021-11-07 16:35:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:35:50,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:35:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:35:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:35:50,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:35:50,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037342511] [2021-11-07 16:35:50,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037342511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:35:50,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:35:50,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:35:50,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553488992] [2021-11-07 16:35:50,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:35:50,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:35:50,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:35:50,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:35:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:50,246 INFO L87 Difference]: Start difference. First operand 14210 states and 18194 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 16:35:52,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:35:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:35:52,976 INFO L93 Difference]: Finished difference Result 31252 states and 40105 transitions. [2021-11-07 16:35:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:35:52,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2021-11-07 16:35:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:35:53,014 INFO L225 Difference]: With dead ends: 31252 [2021-11-07 16:35:53,014 INFO L226 Difference]: Without dead ends: 17110 [2021-11-07 16:35:53,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:53,041 INFO L933 BasicCegarLoop]: 5944 mSDtfsCounter, 1579 mSDsluCounter, 4593 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2267.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 10537 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.83ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2417.85ms IncrementalHoareTripleChecker+Time [2021-11-07 16:35:53,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 10537 Invalid, 88 Unknown, 0 Unchecked, 9.83ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2417.85ms Time] [2021-11-07 16:35:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17110 states. [2021-11-07 16:35:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17110 to 17088. [2021-11-07 16:35:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17088 states, 17080 states have (on average 1.282903981264637) internal successors, (21912), 17087 states have internal predecessors, (21912), 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 16:35:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17088 states to 17088 states and 21912 transitions. [2021-11-07 16:35:53,387 INFO L78 Accepts]: Start accepts. Automaton has 17088 states and 21912 transitions. Word has length 95 [2021-11-07 16:35:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:35:53,388 INFO L470 AbstractCegarLoop]: Abstraction has 17088 states and 21912 transitions. [2021-11-07 16:35:53,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 16:35:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 17088 states and 21912 transitions. [2021-11-07 16:35:53,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 16:35:53,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:35:53,395 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:35:53,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:35:53,395 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:35:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:35:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash -507623943, now seen corresponding path program 1 times [2021-11-07 16:35:53,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:35:53,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995147250] [2021-11-07 16:35:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:35:53,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:35:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:35:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:35:53,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:35:53,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995147250] [2021-11-07 16:35:53,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995147250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:35:53,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:35:53,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:35:53,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996014612] [2021-11-07 16:35:53,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:35:53,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:35:53,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:35:53,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:35:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:53,601 INFO L87 Difference]: Start difference. First operand 17088 states and 21912 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:35:55,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:35:56,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:35:56,429 INFO L93 Difference]: Finished difference Result 37000 states and 47525 transitions. [2021-11-07 16:35:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:35:56,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-07 16:35:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:35:56,474 INFO L225 Difference]: With dead ends: 37000 [2021-11-07 16:35:56,475 INFO L226 Difference]: Without dead ends: 19980 [2021-11-07 16:35:56,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:56,506 INFO L933 BasicCegarLoop]: 6228 mSDtfsCounter, 2242 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2265.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 10165 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.81ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2399.29ms IncrementalHoareTripleChecker+Time [2021-11-07 16:35:56,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 10165 Invalid, 85 Unknown, 0 Unchecked, 8.81ms Time], IncrementalHoareTripleChecker [16 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2399.29ms Time] [2021-11-07 16:35:56,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19980 states. [2021-11-07 16:35:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19980 to 19958. [2021-11-07 16:35:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19958 states, 19950 states have (on average 1.2839097744360903) internal successors, (25614), 19957 states have internal predecessors, (25614), 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 16:35:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19958 states to 19958 states and 25614 transitions. [2021-11-07 16:35:56,881 INFO L78 Accepts]: Start accepts. Automaton has 19958 states and 25614 transitions. Word has length 132 [2021-11-07 16:35:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:35:56,882 INFO L470 AbstractCegarLoop]: Abstraction has 19958 states and 25614 transitions. [2021-11-07 16:35:56,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:35:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand 19958 states and 25614 transitions. [2021-11-07 16:35:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 16:35:56,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:35:56,887 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:35:56,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:35:56,887 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:35:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:35:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 864183355, now seen corresponding path program 1 times [2021-11-07 16:35:56,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:35:56,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362690231] [2021-11-07 16:35:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:35:56,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:35:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:35:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:35:57,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:35:57,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362690231] [2021-11-07 16:35:57,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362690231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:35:57,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:35:57,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:35:57,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646626512] [2021-11-07 16:35:57,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:35:57,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:35:57,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:35:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:35:57,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:57,084 INFO L87 Difference]: Start difference. First operand 19958 states and 25614 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:35:59,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:35:59,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:35:59,844 INFO L93 Difference]: Finished difference Result 42728 states and 54905 transitions. [2021-11-07 16:35:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:35:59,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-07 16:35:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:35:59,897 INFO L225 Difference]: With dead ends: 42728 [2021-11-07 16:35:59,898 INFO L226 Difference]: Without dead ends: 22838 [2021-11-07 16:35:59,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:35:59,934 INFO L933 BasicCegarLoop]: 6228 mSDtfsCounter, 1570 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2257.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 10834 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.65ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2374.81ms IncrementalHoareTripleChecker+Time [2021-11-07 16:35:59,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1570 Valid, 10834 Invalid, 79 Unknown, 0 Unchecked, 8.65ms Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 2374.81ms Time] [2021-11-07 16:35:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22838 states. [2021-11-07 16:36:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22838 to 22816. [2021-11-07 16:36:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22816 states, 22808 states have (on average 1.2848123465450718) internal successors, (29304), 22815 states have internal predecessors, (29304), 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 16:36:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22816 states to 22816 states and 29304 transitions. [2021-11-07 16:36:00,407 INFO L78 Accepts]: Start accepts. Automaton has 22816 states and 29304 transitions. Word has length 132 [2021-11-07 16:36:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:00,407 INFO L470 AbstractCegarLoop]: Abstraction has 22816 states and 29304 transitions. [2021-11-07 16:36:00,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:36:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 22816 states and 29304 transitions. [2021-11-07 16:36:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 16:36:00,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:00,412 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:00,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:36:00,413 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash -46491050, now seen corresponding path program 1 times [2021-11-07 16:36:00,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:00,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69748826] [2021-11-07 16:36:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:00,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:36:00,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:00,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69748826] [2021-11-07 16:36:00,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69748826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:00,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:36:00,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:36:00,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411144774] [2021-11-07 16:36:00,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:00,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:00,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:00,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:00,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:36:00,632 INFO L87 Difference]: Start difference. First operand 22816 states and 29304 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 16:36:02,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:36:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:03,341 INFO L93 Difference]: Finished difference Result 48448 states and 62293 transitions. [2021-11-07 16:36:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:03,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 168 [2021-11-07 16:36:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:03,392 INFO L225 Difference]: With dead ends: 48448 [2021-11-07 16:36:03,392 INFO L226 Difference]: Without dead ends: 25700 [2021-11-07 16:36:03,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:36:03,420 INFO L933 BasicCegarLoop]: 5399 mSDtfsCounter, 1573 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2228.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 10003 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.62ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2365.84ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:03,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 10003 Invalid, 81 Unknown, 0 Unchecked, 6.62ms Time], IncrementalHoareTripleChecker [12 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2365.84ms Time] [2021-11-07 16:36:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25700 states. [2021-11-07 16:36:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25700 to 25678. [2021-11-07 16:36:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25678 states, 25670 states have (on average 1.2854694195559018) internal successors, (32998), 25677 states have internal predecessors, (32998), 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 16:36:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25678 states to 25678 states and 32998 transitions. [2021-11-07 16:36:03,860 INFO L78 Accepts]: Start accepts. Automaton has 25678 states and 32998 transitions. Word has length 168 [2021-11-07 16:36:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:03,860 INFO L470 AbstractCegarLoop]: Abstraction has 25678 states and 32998 transitions. [2021-11-07 16:36:03,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 16:36:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 25678 states and 32998 transitions. [2021-11-07 16:36:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 16:36:03,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:03,865 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:03,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:36:03,865 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:03,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1418298348, now seen corresponding path program 1 times [2021-11-07 16:36:03,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:03,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506584743] [2021-11-07 16:36:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:03,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:36:04,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:04,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506584743] [2021-11-07 16:36:04,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506584743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:04,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:36:04,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:36:04,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726452015] [2021-11-07 16:36:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:04,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:04,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:36:04,044 INFO L87 Difference]: Start difference. First operand 25678 states and 32998 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 16:36:06,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:36:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:06,905 INFO L93 Difference]: Finished difference Result 54176 states and 69689 transitions. [2021-11-07 16:36:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 168 [2021-11-07 16:36:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:06,967 INFO L225 Difference]: With dead ends: 54176 [2021-11-07 16:36:06,967 INFO L226 Difference]: Without dead ends: 28566 [2021-11-07 16:36:07,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:36:07,013 INFO L933 BasicCegarLoop]: 6228 mSDtfsCounter, 1582 mSDsluCounter, 4596 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2247.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 10824 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.11ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2390.88ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:07,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 10824 Invalid, 83 Unknown, 0 Unchecked, 7.11ms Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 2390.88ms Time] [2021-11-07 16:36:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28566 states. [2021-11-07 16:36:07,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28566 to 28544. [2021-11-07 16:36:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28544 states, 28536 states have (on average 1.2859545836837678) internal successors, (36696), 28543 states have internal predecessors, (36696), 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 16:36:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28544 states to 28544 states and 36696 transitions. [2021-11-07 16:36:07,549 INFO L78 Accepts]: Start accepts. Automaton has 28544 states and 36696 transitions. Word has length 168 [2021-11-07 16:36:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:07,550 INFO L470 AbstractCegarLoop]: Abstraction has 28544 states and 36696 transitions. [2021-11-07 16:36:07,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 16:36:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 28544 states and 36696 transitions. [2021-11-07 16:36:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-07 16:36:07,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:07,555 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:07,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 16:36:07,556 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1501729667, now seen corresponding path program 1 times [2021-11-07 16:36:07,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:07,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451685156] [2021-11-07 16:36:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:07,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 16:36:07,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:07,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451685156] [2021-11-07 16:36:07,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451685156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:07,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:36:07,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:36:07,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758410108] [2021-11-07 16:36:07,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:07,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:07,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:07,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:07,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:36:07,784 INFO L87 Difference]: Start difference. First operand 28544 states and 36696 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 16:36:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:08,340 INFO L93 Difference]: Finished difference Result 57092 states and 73424 transitions. [2021-11-07 16:36:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:08,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 195 [2021-11-07 16:36:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:08,388 INFO L225 Difference]: With dead ends: 57092 [2021-11-07 16:36:08,388 INFO L226 Difference]: Without dead ends: 28616 [2021-11-07 16:36:08,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:36:08,432 INFO L933 BasicCegarLoop]: 4656 mSDtfsCounter, 4 mSDsluCounter, 4648 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9304 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.63ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.57ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:08,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 9304 Invalid, 26 Unknown, 0 Unchecked, 9.63ms Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 80.57ms Time] [2021-11-07 16:36:08,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2021-11-07 16:36:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 28580. [2021-11-07 16:36:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2855942881142377) internal successors, (36732), 28579 states have internal predecessors, (36732), 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 16:36:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36732 transitions. [2021-11-07 16:36:08,856 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36732 transitions. Word has length 195 [2021-11-07 16:36:08,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:08,856 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36732 transitions. [2021-11-07 16:36:08,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 16:36:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36732 transitions. [2021-11-07 16:36:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-07 16:36:08,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:08,862 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:08,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 16:36:08,862 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash -25965181, now seen corresponding path program 1 times [2021-11-07 16:36:08,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:08,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092628396] [2021-11-07 16:36:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:08,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 16:36:09,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:09,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092628396] [2021-11-07 16:36:09,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092628396] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:36:09,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439449310] [2021-11-07 16:36:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:09,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:36:09,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:36:09,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 16:36:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:10,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:36:10,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:36:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 16:36:11,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:36:11,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439449310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:11,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:36:11,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:36:11,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461725860] [2021-11-07 16:36:11,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:11,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:11,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:11,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:11,795 INFO L87 Difference]: Start difference. First operand 28580 states and 36732 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 16:36:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:12,257 INFO L93 Difference]: Finished difference Result 57092 states and 73388 transitions. [2021-11-07 16:36:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:12,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 199 [2021-11-07 16:36:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:12,308 INFO L225 Difference]: With dead ends: 57092 [2021-11-07 16:36:12,309 INFO L226 Difference]: Without dead ends: 28580 [2021-11-07 16:36:12,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 54.33ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:12,346 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 4496 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4496 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.59ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:12,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4496 Valid, 4657 Invalid, 21 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 51.59ms Time] [2021-11-07 16:36:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-07 16:36:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-07 16:36:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2834243315133698) internal successors, (36670), 28579 states have internal predecessors, (36670), 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 16:36:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36670 transitions. [2021-11-07 16:36:12,994 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36670 transitions. Word has length 199 [2021-11-07 16:36:12,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:12,995 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36670 transitions. [2021-11-07 16:36:12,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 16:36:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36670 transitions. [2021-11-07 16:36:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-07 16:36:13,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:13,000 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:13,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 16:36:13,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 16:36:13,223 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash -804680180, now seen corresponding path program 1 times [2021-11-07 16:36:13,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:13,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171419976] [2021-11-07 16:36:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:13,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:13,462 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 16:36:13,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:13,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171419976] [2021-11-07 16:36:13,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171419976] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:36:13,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545792188] [2021-11-07 16:36:13,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:13,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:13,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:36:13,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:36:13,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 16:36:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:14,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 3505 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:36:14,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:36:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 16:36:15,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:36:15,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545792188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:15,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:36:15,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:36:15,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586580553] [2021-11-07 16:36:15,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:15,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:15,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:15,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:15,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:15,813 INFO L87 Difference]: Start difference. First operand 28580 states and 36670 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 16:36:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:16,417 INFO L93 Difference]: Finished difference Result 57092 states and 73264 transitions. [2021-11-07 16:36:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:16,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 200 [2021-11-07 16:36:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:16,470 INFO L225 Difference]: With dead ends: 57092 [2021-11-07 16:36:16,471 INFO L226 Difference]: Without dead ends: 28580 [2021-11-07 16:36:16,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 51.82ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:16,503 INFO L933 BasicCegarLoop]: 4640 mSDtfsCounter, 4502 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 4640 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.95ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.17ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:16,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4502 Valid, 4640 Invalid, 15 Unknown, 0 Unchecked, 4.95ms Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 30.17ms Time] [2021-11-07 16:36:16,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-07 16:36:17,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-07 16:36:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2812543749125018) internal successors, (36608), 28579 states have internal predecessors, (36608), 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 16:36:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36608 transitions. [2021-11-07 16:36:17,146 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36608 transitions. Word has length 200 [2021-11-07 16:36:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:17,147 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36608 transitions. [2021-11-07 16:36:17,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 16:36:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36608 transitions. [2021-11-07 16:36:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-07 16:36:17,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:17,152 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:17,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 16:36:17,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 16:36:17,376 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:17,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:17,376 INFO L85 PathProgramCache]: Analyzing trace with hash 825107582, now seen corresponding path program 1 times [2021-11-07 16:36:17,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:17,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878278560] [2021-11-07 16:36:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:17,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 16:36:17,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:17,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878278560] [2021-11-07 16:36:17,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878278560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:36:17,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225271940] [2021-11-07 16:36:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:17,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:17,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:36:17,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:36:17,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 16:36:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:18,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 3506 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:36:18,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:36:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 16:36:19,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:36:19,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225271940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:19,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:36:19,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:36:19,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712244439] [2021-11-07 16:36:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:19,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:19,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:19,825 INFO L87 Difference]: Start difference. First operand 28580 states and 36608 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 16:36:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:20,526 INFO L93 Difference]: Finished difference Result 57092 states and 73140 transitions. [2021-11-07 16:36:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:20,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 201 [2021-11-07 16:36:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:20,576 INFO L225 Difference]: With dead ends: 57092 [2021-11-07 16:36:20,576 INFO L226 Difference]: Without dead ends: 28580 [2021-11-07 16:36:20,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.61ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:20,624 INFO L933 BasicCegarLoop]: 4632 mSDtfsCounter, 4493 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 4632 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.82ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.03ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:20,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4493 Valid, 4632 Invalid, 15 Unknown, 0 Unchecked, 5.82ms Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 31.03ms Time] [2021-11-07 16:36:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-07 16:36:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-07 16:36:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2790844183116337) internal successors, (36546), 28579 states have internal predecessors, (36546), 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 16:36:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36546 transitions. [2021-11-07 16:36:21,347 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36546 transitions. Word has length 201 [2021-11-07 16:36:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:21,348 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36546 transitions. [2021-11-07 16:36:21,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 16:36:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36546 transitions. [2021-11-07 16:36:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-07 16:36:21,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:21,353 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:21,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 16:36:21,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:21,563 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash -190930393, now seen corresponding path program 1 times [2021-11-07 16:36:21,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:21,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918041958] [2021-11-07 16:36:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:21,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 16:36:21,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:21,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918041958] [2021-11-07 16:36:21,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918041958] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:36:21,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917883203] [2021-11-07 16:36:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:21,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:21,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:36:21,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:36:21,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 16:36:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:22,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 3507 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:36:22,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:36:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 16:36:24,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:36:24,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917883203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:24,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:36:24,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:36:24,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250729756] [2021-11-07 16:36:24,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:24,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:24,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:24,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:24,249 INFO L87 Difference]: Start difference. First operand 28580 states and 36546 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 16:36:24,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:24,892 INFO L93 Difference]: Finished difference Result 57092 states and 73016 transitions. [2021-11-07 16:36:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:24,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 202 [2021-11-07 16:36:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:24,939 INFO L225 Difference]: With dead ends: 57092 [2021-11-07 16:36:24,939 INFO L226 Difference]: Without dead ends: 28580 [2021-11-07 16:36:24,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 52.83ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:24,973 INFO L933 BasicCegarLoop]: 4624 mSDtfsCounter, 4484 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 4624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.10ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:24,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4484 Valid, 4624 Invalid, 15 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 30.10ms Time] [2021-11-07 16:36:24,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-07 16:36:25,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-07 16:36:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2769144617107657) internal successors, (36484), 28579 states have internal predecessors, (36484), 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 16:36:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36484 transitions. [2021-11-07 16:36:25,705 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36484 transitions. Word has length 202 [2021-11-07 16:36:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:25,706 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36484 transitions. [2021-11-07 16:36:25,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 16:36:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36484 transitions. [2021-11-07 16:36:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-07 16:36:25,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:25,710 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:25,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 16:36:25,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:25,926 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1623187591, now seen corresponding path program 1 times [2021-11-07 16:36:25,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:25,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988054708] [2021-11-07 16:36:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:25,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 16:36:26,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:26,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988054708] [2021-11-07 16:36:26,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988054708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:36:26,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047788300] [2021-11-07 16:36:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:26,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:26,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:36:26,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:36:26,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 16:36:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:27,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 3508 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:36:27,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:36:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 16:36:28,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:36:28,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047788300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:28,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:36:28,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:36:28,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50554893] [2021-11-07 16:36:28,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:28,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:28,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:28,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:28,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:28,562 INFO L87 Difference]: Start difference. First operand 28580 states and 36484 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 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 16:36:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:29,260 INFO L93 Difference]: Finished difference Result 57092 states and 72892 transitions. [2021-11-07 16:36:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:29,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 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 203 [2021-11-07 16:36:29,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:29,301 INFO L225 Difference]: With dead ends: 57092 [2021-11-07 16:36:29,301 INFO L226 Difference]: Without dead ends: 28580 [2021-11-07 16:36:29,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.62ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:29,346 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 4475 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4475 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.94ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.93ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:29,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4475 Valid, 4616 Invalid, 15 Unknown, 0 Unchecked, 5.94ms Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 31.93ms Time] [2021-11-07 16:36:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-07 16:36:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-07 16:36:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2747445051098978) internal successors, (36422), 28579 states have internal predecessors, (36422), 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 16:36:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36422 transitions. [2021-11-07 16:36:30,049 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36422 transitions. Word has length 203 [2021-11-07 16:36:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:30,050 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36422 transitions. [2021-11-07 16:36:30,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 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 16:36:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36422 transitions. [2021-11-07 16:36:30,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 16:36:30,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:30,054 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:30,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 16:36:30,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 16:36:30,263 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1221628482, now seen corresponding path program 1 times [2021-11-07 16:36:30,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:30,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637297917] [2021-11-07 16:36:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:30,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 16:36:30,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:30,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637297917] [2021-11-07 16:36:30,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637297917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:36:30,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127852560] [2021-11-07 16:36:30,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:30,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:30,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:36:30,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:36:30,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 16:36:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:31,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 3509 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:36:31,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:36:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 16:36:32,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:36:32,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127852560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:32,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:36:32,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:36:32,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111955488] [2021-11-07 16:36:32,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:32,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:32,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:32,600 INFO L87 Difference]: Start difference. First operand 28580 states and 36422 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 16:36:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:33,282 INFO L93 Difference]: Finished difference Result 57092 states and 72768 transitions. [2021-11-07 16:36:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:33,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 204 [2021-11-07 16:36:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:33,335 INFO L225 Difference]: With dead ends: 57092 [2021-11-07 16:36:33,335 INFO L226 Difference]: Without dead ends: 28580 [2021-11-07 16:36:33,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.54ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:33,373 INFO L933 BasicCegarLoop]: 4608 mSDtfsCounter, 4466 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4466 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.91ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.91ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:33,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4466 Valid, 4608 Invalid, 15 Unknown, 0 Unchecked, 4.91ms Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 26.91ms Time] [2021-11-07 16:36:33,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-07 16:36:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-07 16:36:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2725745485090298) internal successors, (36360), 28579 states have internal predecessors, (36360), 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 16:36:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36360 transitions. [2021-11-07 16:36:34,386 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36360 transitions. Word has length 204 [2021-11-07 16:36:34,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:34,387 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36360 transitions. [2021-11-07 16:36:34,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 16:36:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36360 transitions. [2021-11-07 16:36:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-07 16:36:34,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:34,390 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:34,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 16:36:34,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 16:36:34,591 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:34,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash -783237516, now seen corresponding path program 1 times [2021-11-07 16:36:34,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:34,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838811684] [2021-11-07 16:36:34,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:34,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-07 16:36:34,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:34,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838811684] [2021-11-07 16:36:34,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838811684] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:36:34,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321759144] [2021-11-07 16:36:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:34,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:34,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:36:34,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:36:34,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 16:36:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:35,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 3510 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:36:35,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:36:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 16:36:35,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:36:35,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321759144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:35,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:36:35,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 16:36:35,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950859428] [2021-11-07 16:36:35,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:35,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:35,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:35,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:35,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:35,983 INFO L87 Difference]: Start difference. First operand 28580 states and 36360 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 16:36:37,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:37,290 INFO L93 Difference]: Finished difference Result 58132 states and 73996 transitions. [2021-11-07 16:36:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:36:37,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 205 [2021-11-07 16:36:37,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:37,345 INFO L225 Difference]: With dead ends: 58132 [2021-11-07 16:36:37,345 INFO L226 Difference]: Without dead ends: 29620 [2021-11-07 16:36:37,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.41ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:37,382 INFO L933 BasicCegarLoop]: 4556 mSDtfsCounter, 288 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 493.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 9094 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.48ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 532.97ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:37,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 9094 Invalid, 148 Unknown, 0 Unchecked, 9.48ms Time], IncrementalHoareTripleChecker [22 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 532.97ms Time] [2021-11-07 16:36:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29620 states. [2021-11-07 16:36:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29620 to 28632. [2021-11-07 16:36:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28632 states, 28624 states have (on average 1.2720793739519285) internal successors, (36412), 28631 states have internal predecessors, (36412), 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 16:36:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28632 states to 28632 states and 36412 transitions. [2021-11-07 16:36:38,205 INFO L78 Accepts]: Start accepts. Automaton has 28632 states and 36412 transitions. Word has length 205 [2021-11-07 16:36:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:38,206 INFO L470 AbstractCegarLoop]: Abstraction has 28632 states and 36412 transitions. [2021-11-07 16:36:38,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 16:36:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 28632 states and 36412 transitions. [2021-11-07 16:36:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 16:36:38,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:38,210 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:38,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 16:36:38,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:38,411 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:38,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash 222121146, now seen corresponding path program 1 times [2021-11-07 16:36:38,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:38,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489045639] [2021-11-07 16:36:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:38,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 16:36:38,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:38,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489045639] [2021-11-07 16:36:38,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489045639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:38,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:36:38,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:36:38,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241759297] [2021-11-07 16:36:38,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:38,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:36:38,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:38,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:36:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:36:38,612 INFO L87 Difference]: Start difference. First operand 28632 states and 36412 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 16:36:40,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:36:42,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:42,912 INFO L93 Difference]: Finished difference Result 88532 states and 112637 transitions. [2021-11-07 16:36:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:36:42,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 210 [2021-11-07 16:36:42,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:43,036 INFO L225 Difference]: With dead ends: 88532 [2021-11-07 16:36:43,036 INFO L226 Difference]: Without dead ends: 59968 [2021-11-07 16:36:43,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:43,090 INFO L933 BasicCegarLoop]: 8957 mSDtfsCounter, 8381 mSDsluCounter, 12384 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2469.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8381 SdHoareTripleChecker+Valid, 21341 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.47ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2613.55ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:43,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8381 Valid, 21341 Invalid, 134 Unknown, 0 Unchecked, 26.47ms Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 2613.55ms Time] [2021-11-07 16:36:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59968 states. [2021-11-07 16:36:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59968 to 31478. [2021-11-07 16:36:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31478 states, 31470 states have (on average 1.272767715284398) internal successors, (40054), 31477 states have internal predecessors, (40054), 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 16:36:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31478 states to 31478 states and 40054 transitions. [2021-11-07 16:36:44,381 INFO L78 Accepts]: Start accepts. Automaton has 31478 states and 40054 transitions. Word has length 210 [2021-11-07 16:36:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:44,382 INFO L470 AbstractCegarLoop]: Abstraction has 31478 states and 40054 transitions. [2021-11-07 16:36:44,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 16:36:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand 31478 states and 40054 transitions. [2021-11-07 16:36:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 16:36:44,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:44,387 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:44,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 16:36:44,387 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash -129455417, now seen corresponding path program 1 times [2021-11-07 16:36:44,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:44,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798653179] [2021-11-07 16:36:44,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:44,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 16:36:44,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:44,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798653179] [2021-11-07 16:36:44,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798653179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:44,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:36:44,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:36:44,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695778989] [2021-11-07 16:36:44,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:44,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:36:44,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:44,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:36:44,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:36:44,587 INFO L87 Difference]: Start difference. First operand 31478 states and 40054 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 16:36:46,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:36:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:49,040 INFO L93 Difference]: Finished difference Result 94244 states and 119961 transitions. [2021-11-07 16:36:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:36:49,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 211 [2021-11-07 16:36:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:49,146 INFO L225 Difference]: With dead ends: 94244 [2021-11-07 16:36:49,147 INFO L226 Difference]: Without dead ends: 62834 [2021-11-07 16:36:49,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:49,186 INFO L933 BasicCegarLoop]: 8956 mSDtfsCounter, 7928 mSDsluCounter, 13304 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2470.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7928 SdHoareTripleChecker+Valid, 22260 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.57ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2632.98ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:49,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7928 Valid, 22260 Invalid, 144 Unknown, 0 Unchecked, 24.57ms Time], IncrementalHoareTripleChecker [12 Valid, 131 Invalid, 1 Unknown, 0 Unchecked, 2632.98ms Time] [2021-11-07 16:36:49,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62834 states. [2021-11-07 16:36:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62834 to 34344. [2021-11-07 16:36:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34344 states, 34336 states have (on average 1.2731826654240448) internal successors, (43716), 34343 states have internal predecessors, (43716), 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 16:36:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34344 states to 34344 states and 43716 transitions. [2021-11-07 16:36:50,597 INFO L78 Accepts]: Start accepts. Automaton has 34344 states and 43716 transitions. Word has length 211 [2021-11-07 16:36:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:50,599 INFO L470 AbstractCegarLoop]: Abstraction has 34344 states and 43716 transitions. [2021-11-07 16:36:50,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 16:36:50,599 INFO L276 IsEmpty]: Start isEmpty. Operand 34344 states and 43716 transitions. [2021-11-07 16:36:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-07 16:36:50,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:50,604 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:50,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 16:36:50,604 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:50,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash -506343653, now seen corresponding path program 1 times [2021-11-07 16:36:50,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:50,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730678632] [2021-11-07 16:36:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:50,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 16:36:50,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:50,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730678632] [2021-11-07 16:36:50,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730678632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:50,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:36:50,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:36:50,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940635948] [2021-11-07 16:36:50,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:50,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:36:50,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:50,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:36:50,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:36:50,784 INFO L87 Difference]: Start difference. First operand 34344 states and 43716 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 16:36:52,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:36:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:36:55,406 INFO L93 Difference]: Finished difference Result 99972 states and 127289 transitions. [2021-11-07 16:36:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:36:55,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 212 [2021-11-07 16:36:55,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:36:55,523 INFO L225 Difference]: With dead ends: 99972 [2021-11-07 16:36:55,523 INFO L226 Difference]: Without dead ends: 65696 [2021-11-07 16:36:55,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:55,586 INFO L933 BasicCegarLoop]: 9571 mSDtfsCounter, 7157 mSDsluCounter, 13620 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2384.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7157 SdHoareTripleChecker+Valid, 23191 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.66ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2514.06ms IncrementalHoareTripleChecker+Time [2021-11-07 16:36:55,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7157 Valid, 23191 Invalid, 148 Unknown, 0 Unchecked, 19.66ms Time], IncrementalHoareTripleChecker [14 Valid, 133 Invalid, 1 Unknown, 0 Unchecked, 2514.06ms Time] [2021-11-07 16:36:55,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65696 states. [2021-11-07 16:36:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65696 to 37206. [2021-11-07 16:36:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37206 states, 37198 states have (on average 1.2735630947900425) internal successors, (47374), 37205 states have internal predecessors, (47374), 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 16:36:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37206 states to 37206 states and 47374 transitions. [2021-11-07 16:36:57,401 INFO L78 Accepts]: Start accepts. Automaton has 37206 states and 47374 transitions. Word has length 212 [2021-11-07 16:36:57,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:36:57,401 INFO L470 AbstractCegarLoop]: Abstraction has 37206 states and 47374 transitions. [2021-11-07 16:36:57,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 16:36:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand 37206 states and 47374 transitions. [2021-11-07 16:36:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-07 16:36:57,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:36:57,407 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:36:57,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 16:36:57,407 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:36:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:36:57,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1999778892, now seen corresponding path program 1 times [2021-11-07 16:36:57,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:36:57,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570680441] [2021-11-07 16:36:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:57,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:36:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:36:57,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:36:57,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570680441] [2021-11-07 16:36:57,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570680441] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:36:57,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97081933] [2021-11-07 16:36:57,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:36:57,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:36:57,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:36:57,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:36:57,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 16:36:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:36:58,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 3537 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:36:58,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:36:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-07 16:36:58,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:36:58,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97081933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:36:58,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:36:58,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 16:36:58,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108457116] [2021-11-07 16:36:58,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:36:58,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:36:58,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:36:58,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:36:58,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:36:58,882 INFO L87 Difference]: Start difference. First operand 37206 states and 47374 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 16:37:00,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:37:00,920 INFO L93 Difference]: Finished difference Result 76396 states and 97358 transitions. [2021-11-07 16:37:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:37:00,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 213 [2021-11-07 16:37:00,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:37:00,987 INFO L225 Difference]: With dead ends: 76396 [2021-11-07 16:37:00,987 INFO L226 Difference]: Without dead ends: 39258 [2021-11-07 16:37:01,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.27ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:37:01,029 INFO L933 BasicCegarLoop]: 4568 mSDtfsCounter, 366 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 514.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 9106 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.45ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 574.79ms IncrementalHoareTripleChecker+Time [2021-11-07 16:37:01,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 9106 Invalid, 148 Unknown, 0 Unchecked, 7.45ms Time], IncrementalHoareTripleChecker [40 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 574.79ms Time] [2021-11-07 16:37:01,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39258 states. [2021-11-07 16:37:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39258 to 37326. [2021-11-07 16:37:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37326 states, 37318 states have (on average 1.2726834235489577) internal successors, (47494), 37325 states have internal predecessors, (47494), 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 16:37:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37326 states to 37326 states and 47494 transitions. [2021-11-07 16:37:02,557 INFO L78 Accepts]: Start accepts. Automaton has 37326 states and 47494 transitions. Word has length 213 [2021-11-07 16:37:02,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:37:02,558 INFO L470 AbstractCegarLoop]: Abstraction has 37326 states and 47494 transitions. [2021-11-07 16:37:02,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 16:37:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand 37326 states and 47494 transitions. [2021-11-07 16:37:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-07 16:37:02,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:02,563 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 16:37:02,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 16:37:02,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:37:02,767 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 16:37:02,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1018066352, now seen corresponding path program 1 times [2021-11-07 16:37:02,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:02,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687568115] [2021-11-07 16:37:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:02,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:37:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-07 16:37:02,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:37:02,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687568115] [2021-11-07 16:37:02,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687568115] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:37:02,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166118168] [2021-11-07 16:37:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:02,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:37:02,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:37:02,950 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:37:02,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 16:37:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:03,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 3547 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:37:03,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:37:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-07 16:37:04,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:37:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-07 16:37:04,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166118168] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:37:04,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:37:04,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 16:37:04,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392245692] [2021-11-07 16:37:04,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:37:04,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:37:04,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:37:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:37:04,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:37:04,606 INFO L87 Difference]: Start difference. First operand 37326 states and 47494 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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)