./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-amd-amd8111e.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-amd-amd8111e.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 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:31:12,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:31:12,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:31:12,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:31:12,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:31:12,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:31:12,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:31:12,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:31:12,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:31:12,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:31:12,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:31:12,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:31:12,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:31:12,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:31:12,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:31:12,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:31:12,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:31:12,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:31:12,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:31:12,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:31:12,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:31:12,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:31:12,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:31:12,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:31:12,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:31:12,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:31:12,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:31:12,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:31:12,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:31:12,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:31:12,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:31:12,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:31:12,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:31:12,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:31:12,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:31:12,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:31:12,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:31:12,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:31:12,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:31:12,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:31:12,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:31:12,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:31:12,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:31:12,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:31:12,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:31:12,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:31:12,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:31:12,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:31:12,360 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:31:12,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:31:12,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:31:12,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:31:12,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:31:12,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:31:12,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:31:12,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:31:12,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:31:12,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:31:12,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:31:12,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:31:12,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:31:12,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:31:12,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:31:12,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:31:12,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:31:12,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:31:12,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:31:12,365 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:31:12,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:31:12,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:31:12,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:31:12,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b3ea3bfb5fa1a0ecb86372fd7d66f0cc10d9707b974c24e5c8a286e565a46ff [2021-11-07 16:31:12,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:31:12,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:31:12,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:31:12,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:31:12,630 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:31:12,632 INFO L432 ainManager$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-amd-amd8111e.cil.i [2021-11-07 16:31:12,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe271cce2/47010d63989f468995f7073f798b4047/FLAGb16d988bd [2021-11-07 16:31:13,382 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:31:13,383 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-amd-amd8111e.cil.i [2021-11-07 16:31:13,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe271cce2/47010d63989f468995f7073f798b4047/FLAGb16d988bd [2021-11-07 16:31:13,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe271cce2/47010d63989f468995f7073f798b4047 [2021-11-07 16:31:13,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:31:13,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:31:13,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:31:13,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:31:13,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:31:13,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:31:13" (1/1) ... [2021-11-07 16:31:13,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18fda922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:13, skipping insertion in model container [2021-11-07 16:31:13,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:31:13" (1/1) ... [2021-11-07 16:31:13,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:31:13,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:31:15,958 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-amd-amd8111e.cil.i[335455,335468] [2021-11-07 16:31:15,961 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-amd-amd8111e.cil.i[335600,335613] [2021-11-07 16:31:15,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:31:16,022 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:31:16,364 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-amd-amd8111e.cil.i[335455,335468] [2021-11-07 16:31:16,365 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-amd-amd8111e.cil.i[335600,335613] [2021-11-07 16:31:16,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:31:16,533 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:31:16,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16 WrapperNode [2021-11-07 16:31:16,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:31:16,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:31:16,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:31:16,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:31:16,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:16,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:17,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:31:17,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:31:17,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:31:17,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:31:17,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:17,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:17,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:17,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:18,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:18,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:18,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:18,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:31:18,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:31:18,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:31:18,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:31:18,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (1/1) ... [2021-11-07 16:31:18,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:31:18,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:31:18,705 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 16:31:18,762 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 16:31:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:31:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:31:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:31:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:31:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:31:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:31:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:31:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:31:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:31:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:31:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:31:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:31:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:31:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:31:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:31:38,795 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 16:31:38,795 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 16:31:38,795 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 16:31:38,796 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 16:31:38,797 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 16:31:38,799 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 16:31:38,835 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:31:38,835 INFO L299 CfgBuilder]: Removed 6970 assume(true) statements. [2021-11-07 16:31:38,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:31:38 BoogieIcfgContainer [2021-11-07 16:31:38,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:31:38,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:31:38,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:31:38,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:31:38,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:31:13" (1/3) ... [2021-11-07 16:31:38,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1446c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:31:38, skipping insertion in model container [2021-11-07 16:31:38,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:16" (2/3) ... [2021-11-07 16:31:38,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1446c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:31:38, skipping insertion in model container [2021-11-07 16:31:38,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:31:38" (3/3) ... [2021-11-07 16:31:38,850 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-07 16:31:38,854 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:31:38,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 16:31:38,908 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:31:38,912 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 16:31:38,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 16:31:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 5709 states, 5702 states have (on average 1.2995440196422308) internal successors, (7410), 5708 states have internal predecessors, (7410), 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 16:31:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 16:31:39,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:31:39,026 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 16:31:39,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:31:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:31:39,031 INFO L85 PathProgramCache]: Analyzing trace with hash -466698118, now seen corresponding path program 1 times [2021-11-07 16:31:39,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:31:39,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31763757] [2021-11-07 16:31:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:31:39,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:31:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:31:39,664 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 16:31:39,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:31:39,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31763757] [2021-11-07 16:31:39,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31763757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:31:39,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:31:39,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:31:39,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157926161] [2021-11-07 16:31:39,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:31:39,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:31:39,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:31:39,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:31:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:39,711 INFO L87 Difference]: Start difference. First operand has 5709 states, 5702 states have (on average 1.2995440196422308) internal successors, (7410), 5708 states have internal predecessors, (7410), 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 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 16:31:41,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:31:42,369 INFO L93 Difference]: Finished difference Result 13272 states and 17280 transitions. [2021-11-07 16:31:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:31:42,372 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 16:31:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:31:42,418 INFO L225 Difference]: With dead ends: 13272 [2021-11-07 16:31:42,418 INFO L226 Difference]: Without dead ends: 7406 [2021-11-07 16:31:42,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:42,442 INFO L933 BasicCegarLoop]: 7318 mSDtfsCounter, 2561 mSDsluCounter, 7266 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2193.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 14584 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.36ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2348.21ms IncrementalHoareTripleChecker+Time [2021-11-07 16:31:42,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2561 Valid, 14584 Invalid, 94 Unknown, 0 Unchecked, 31.36ms Time], IncrementalHoareTripleChecker [19 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2348.21ms Time] [2021-11-07 16:31:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7406 states. [2021-11-07 16:31:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7406 to 7398. [2021-11-07 16:31:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7398 states, 7391 states have (on average 1.275064267352185) internal successors, (9424), 7397 states have internal predecessors, (9424), 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 16:31:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7398 states to 7398 states and 9424 transitions. [2021-11-07 16:31:42,744 INFO L78 Accepts]: Start accepts. Automaton has 7398 states and 9424 transitions. Word has length 75 [2021-11-07 16:31:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:31:42,745 INFO L470 AbstractCegarLoop]: Abstraction has 7398 states and 9424 transitions. [2021-11-07 16:31:42,745 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 16:31:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7398 states and 9424 transitions. [2021-11-07 16:31:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 16:31:42,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:31:42,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:31:42,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:31:42,753 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:31:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:31:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1289017702, now seen corresponding path program 1 times [2021-11-07 16:31:42,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:31:42,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902713490] [2021-11-07 16:31:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:31:42,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:31:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:31:43,003 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 16:31:43,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:31:43,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902713490] [2021-11-07 16:31:43,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902713490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:31:43,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:31:43,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:31:43,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2807948] [2021-11-07 16:31:43,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:31:43,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:31:43,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:31:43,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:31:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:43,008 INFO L87 Difference]: Start difference. First operand 7398 states and 9424 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 16:31:45,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:31:45,843 INFO L93 Difference]: Finished difference Result 18996 states and 24200 transitions. [2021-11-07 16:31:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:31:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-07 16:31:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:31:45,890 INFO L225 Difference]: With dead ends: 18996 [2021-11-07 16:31:45,891 INFO L226 Difference]: Without dead ends: 11682 [2021-11-07 16:31:45,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:45,909 INFO L933 BasicCegarLoop]: 6970 mSDtfsCounter, 4931 mSDsluCounter, 6894 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2144.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4931 SdHoareTripleChecker+Valid, 13864 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.39ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2304.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:31:45,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4931 Valid, 13864 Invalid, 89 Unknown, 0 Unchecked, 22.39ms Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 2304.00ms Time] [2021-11-07 16:31:45,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11682 states. [2021-11-07 16:31:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11682 to 11030. [2021-11-07 16:31:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11030 states, 11023 states have (on average 1.2790528894130455) internal successors, (14099), 11029 states have internal predecessors, (14099), 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 16:31:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11030 states to 11030 states and 14099 transitions. [2021-11-07 16:31:46,214 INFO L78 Accepts]: Start accepts. Automaton has 11030 states and 14099 transitions. Word has length 83 [2021-11-07 16:31:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:31:46,215 INFO L470 AbstractCegarLoop]: Abstraction has 11030 states and 14099 transitions. [2021-11-07 16:31:46,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 16:31:46,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11030 states and 14099 transitions. [2021-11-07 16:31:46,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 16:31:46,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:31:46,226 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:31:46,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:31:46,227 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:31:46,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:31:46,227 INFO L85 PathProgramCache]: Analyzing trace with hash 429197658, now seen corresponding path program 1 times [2021-11-07 16:31:46,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:31:46,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889504405] [2021-11-07 16:31:46,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:31:46,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:31:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:31:46,487 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 16:31:46,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:31:46,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889504405] [2021-11-07 16:31:46,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889504405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:31:46,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:31:46,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:31:46,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846204530] [2021-11-07 16:31:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:31:46,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:31:46,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:31:46,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:31:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:46,491 INFO L87 Difference]: Start difference. First operand 11030 states and 14099 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 16:31:48,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:31:49,041 INFO L93 Difference]: Finished difference Result 24251 states and 31094 transitions. [2021-11-07 16:31:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:31:49,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-07 16:31:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:31:49,109 INFO L225 Difference]: With dead ends: 24251 [2021-11-07 16:31:49,110 INFO L226 Difference]: Without dead ends: 13305 [2021-11-07 16:31:49,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:49,139 INFO L933 BasicCegarLoop]: 8902 mSDtfsCounter, 2446 mSDsluCounter, 6909 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2144.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 15811 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.41ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2294.85ms IncrementalHoareTripleChecker+Time [2021-11-07 16:31:49,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2446 Valid, 15811 Invalid, 88 Unknown, 0 Unchecked, 17.41ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2294.85ms Time] [2021-11-07 16:31:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13305 states. [2021-11-07 16:31:49,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13305 to 13293. [2021-11-07 16:31:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13293 states, 13286 states have (on average 1.2833810025590848) internal successors, (17051), 13292 states have internal predecessors, (17051), 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 16:31:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13293 states to 13293 states and 17051 transitions. [2021-11-07 16:31:49,484 INFO L78 Accepts]: Start accepts. Automaton has 13293 states and 17051 transitions. Word has length 103 [2021-11-07 16:31:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:31:49,486 INFO L470 AbstractCegarLoop]: Abstraction has 13293 states and 17051 transitions. [2021-11-07 16:31:49,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 16:31:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 13293 states and 17051 transitions. [2021-11-07 16:31:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 16:31:49,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:31:49,495 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:31:49,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:31:49,496 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:31:49,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:31:49,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1904077208, now seen corresponding path program 1 times [2021-11-07 16:31:49,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:31:49,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064317229] [2021-11-07 16:31:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:31:49,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:31:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:31:49,700 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 16:31:49,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:31:49,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064317229] [2021-11-07 16:31:49,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064317229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:31:49,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:31:49,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:31:49,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962643635] [2021-11-07 16:31:49,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:31:49,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:31:49,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:31:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:31:49,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:49,703 INFO L87 Difference]: Start difference. First operand 13293 states and 17051 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 16:31:51,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:52,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:31:52,490 INFO L93 Difference]: Finished difference Result 28777 states and 36998 transitions. [2021-11-07 16:31:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:31:52,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 140 [2021-11-07 16:31:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:31:52,534 INFO L225 Difference]: With dead ends: 28777 [2021-11-07 16:31:52,535 INFO L226 Difference]: Without dead ends: 15568 [2021-11-07 16:31:52,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:52,566 INFO L933 BasicCegarLoop]: 6956 mSDtfsCounter, 3168 mSDsluCounter, 6202 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2147.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 13158 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.68ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2328.79ms IncrementalHoareTripleChecker+Time [2021-11-07 16:31:52,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3168 Valid, 13158 Invalid, 89 Unknown, 0 Unchecked, 13.68ms Time], IncrementalHoareTripleChecker [26 Valid, 62 Invalid, 1 Unknown, 0 Unchecked, 2328.79ms Time] [2021-11-07 16:31:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15568 states. [2021-11-07 16:31:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15568 to 15556. [2021-11-07 16:31:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15556 states, 15549 states have (on average 1.2869637918837225) internal successors, (20011), 15555 states have internal predecessors, (20011), 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 16:31:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15556 states to 15556 states and 20011 transitions. [2021-11-07 16:31:52,996 INFO L78 Accepts]: Start accepts. Automaton has 15556 states and 20011 transitions. Word has length 140 [2021-11-07 16:31:52,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:31:52,997 INFO L470 AbstractCegarLoop]: Abstraction has 15556 states and 20011 transitions. [2021-11-07 16:31:52,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 16:31:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 15556 states and 20011 transitions. [2021-11-07 16:31:53,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 16:31:53,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:31:53,004 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2021-11-07 16:31:53,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:31:53,004 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:31:53,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:31:53,005 INFO L85 PathProgramCache]: Analyzing trace with hash 213788483, now seen corresponding path program 1 times [2021-11-07 16:31:53,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:31:53,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408208010] [2021-11-07 16:31:53,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:31:53,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:31:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:31:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:31:53,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:31:53,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408208010] [2021-11-07 16:31:53,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408208010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:31:53,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:31:53,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:31:53,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24547720] [2021-11-07 16:31:53,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:31:53,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:31:53,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:31:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:31:53,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:53,196 INFO L87 Difference]: Start difference. First operand 15556 states and 20011 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 16:31:55,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:31:55,811 INFO L93 Difference]: Finished difference Result 33293 states and 42878 transitions. [2021-11-07 16:31:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:31:55,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 167 [2021-11-07 16:31:55,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:31:55,967 INFO L225 Difference]: With dead ends: 33293 [2021-11-07 16:31:55,967 INFO L226 Difference]: Without dead ends: 17821 [2021-11-07 16:31:55,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:55,996 INFO L933 BasicCegarLoop]: 9411 mSDtfsCounter, 2429 mSDsluCounter, 6922 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2117.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2429 SdHoareTripleChecker+Valid, 16333 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2282.04ms IncrementalHoareTripleChecker+Time [2021-11-07 16:31:55,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2429 Valid, 16333 Invalid, 69 Unknown, 0 Unchecked, 13.93ms Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 2282.04ms Time] [2021-11-07 16:31:56,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2021-11-07 16:31:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17809. [2021-11-07 16:31:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17809 states, 17802 states have (on average 1.289124817436243) internal successors, (22949), 17808 states have internal predecessors, (22949), 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 16:31:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17809 states to 17809 states and 22949 transitions. [2021-11-07 16:31:56,380 INFO L78 Accepts]: Start accepts. Automaton has 17809 states and 22949 transitions. Word has length 167 [2021-11-07 16:31:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:31:56,380 INFO L470 AbstractCegarLoop]: Abstraction has 17809 states and 22949 transitions. [2021-11-07 16:31:56,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 16:31:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 17809 states and 22949 transitions. [2021-11-07 16:31:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 16:31:56,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:31:56,388 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2021-11-07 16:31:56,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:31:56,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:31:56,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:31:56,390 INFO L85 PathProgramCache]: Analyzing trace with hash -278837691, now seen corresponding path program 1 times [2021-11-07 16:31:56,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:31:56,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143883222] [2021-11-07 16:31:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:31:56,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:31:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:31:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:31:56,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:31:56,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143883222] [2021-11-07 16:31:56,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143883222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:31:56,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:31:56,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:31:56,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962446350] [2021-11-07 16:31:56,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:31:56,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:31:56,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:31:56,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:31:56,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:56,586 INFO L87 Difference]: Start difference. First operand 17809 states and 22949 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 16:31:58,632 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 16:31:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:31:59,276 INFO L93 Difference]: Finished difference Result 37809 states and 48774 transitions. [2021-11-07 16:31:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:31:59,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 167 [2021-11-07 16:31:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:31:59,329 INFO L225 Difference]: With dead ends: 37809 [2021-11-07 16:31:59,330 INFO L226 Difference]: Without dead ends: 20084 [2021-11-07 16:31:59,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:31:59,375 INFO L933 BasicCegarLoop]: 8901 mSDtfsCounter, 3137 mSDsluCounter, 6220 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2149.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 15121 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.40ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2350.31ms IncrementalHoareTripleChecker+Time [2021-11-07 16:31:59,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3137 Valid, 15121 Invalid, 79 Unknown, 0 Unchecked, 10.40ms Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 1 Unknown, 0 Unchecked, 2350.31ms Time] [2021-11-07 16:31:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20084 states. [2021-11-07 16:32:00,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20084 to 20072. [2021-11-07 16:32:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20072 states, 20065 states have (on average 1.2909543982058311) internal successors, (25903), 20071 states have internal predecessors, (25903), 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 16:32:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20072 states to 20072 states and 25903 transitions. [2021-11-07 16:32:00,231 INFO L78 Accepts]: Start accepts. Automaton has 20072 states and 25903 transitions. Word has length 167 [2021-11-07 16:32:00,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:00,231 INFO L470 AbstractCegarLoop]: Abstraction has 20072 states and 25903 transitions. [2021-11-07 16:32:00,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 16:32:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 20072 states and 25903 transitions. [2021-11-07 16:32:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-07 16:32:00,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:00,243 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 16:32:00,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:32:00,244 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1489746594, now seen corresponding path program 1 times [2021-11-07 16:32:00,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:00,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643500529] [2021-11-07 16:32:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:00,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:32:00,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:00,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643500529] [2021-11-07 16:32:00,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643500529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:00,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:32:00,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:32:00,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918593067] [2021-11-07 16:32:00,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:00,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:32:00,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:00,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:32:00,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:32:00,457 INFO L87 Difference]: Start difference. First operand 20072 states and 25903 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 16:32:02,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:03,249 INFO L93 Difference]: Finished difference Result 42327 states and 54666 transitions. [2021-11-07 16:32:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:32:03,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 16:32:03,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:03,311 INFO L225 Difference]: With dead ends: 42327 [2021-11-07 16:32:03,312 INFO L226 Difference]: Without dead ends: 22339 [2021-11-07 16:32:03,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:32:03,407 INFO L933 BasicCegarLoop]: 7469 mSDtfsCounter, 2431 mSDsluCounter, 6920 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2219.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 14389 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.98ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2390.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:03,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2431 Valid, 14389 Invalid, 71 Unknown, 0 Unchecked, 8.98ms Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2390.00ms Time] [2021-11-07 16:32:03,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22339 states. [2021-11-07 16:32:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22339 to 22327. [2021-11-07 16:32:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22327 states, 22320 states have (on average 1.2922491039426522) internal successors, (28843), 22326 states have internal predecessors, (28843), 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 16:32:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22327 states to 22327 states and 28843 transitions. [2021-11-07 16:32:03,971 INFO L78 Accepts]: Start accepts. Automaton has 22327 states and 28843 transitions. Word has length 201 [2021-11-07 16:32:03,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:03,971 INFO L470 AbstractCegarLoop]: Abstraction has 22327 states and 28843 transitions. [2021-11-07 16:32:03,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 16:32:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 22327 states and 28843 transitions. [2021-11-07 16:32:03,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-07 16:32:03,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:03,983 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 16:32:03,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:32:03,984 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:03,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:03,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1982372768, now seen corresponding path program 1 times [2021-11-07 16:32:03,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:03,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533773174] [2021-11-07 16:32:03,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:03,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:04,321 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 16:32:04,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:04,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533773174] [2021-11-07 16:32:04,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533773174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:04,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:32:04,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:32:04,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939993214] [2021-11-07 16:32:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:04,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:32:04,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:32:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:32:04,324 INFO L87 Difference]: Start difference. First operand 22327 states and 28843 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 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 16:32:05,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:05,488 INFO L93 Difference]: Finished difference Result 45690 states and 59048 transitions. [2021-11-07 16:32:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:32:05,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 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 16:32:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:05,524 INFO L225 Difference]: With dead ends: 45690 [2021-11-07 16:32:05,524 INFO L226 Difference]: Without dead ends: 23447 [2021-11-07 16:32:05,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:32:05,564 INFO L933 BasicCegarLoop]: 6860 mSDtfsCounter, 480 mSDsluCounter, 6820 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 495.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 13680 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.71ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 574.72ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:05,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 13680 Invalid, 298 Unknown, 0 Unchecked, 31.71ms Time], IncrementalHoareTripleChecker [38 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 574.72ms Time] [2021-11-07 16:32:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23447 states. [2021-11-07 16:32:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23447 to 22383. [2021-11-07 16:32:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22383 states, 22376 states have (on average 1.291517697533071) internal successors, (28899), 22382 states have internal predecessors, (28899), 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 16:32:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22383 states to 22383 states and 28899 transitions. [2021-11-07 16:32:06,035 INFO L78 Accepts]: Start accepts. Automaton has 22383 states and 28899 transitions. Word has length 201 [2021-11-07 16:32:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:06,035 INFO L470 AbstractCegarLoop]: Abstraction has 22383 states and 28899 transitions. [2021-11-07 16:32:06,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 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 16:32:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 22383 states and 28899 transitions. [2021-11-07 16:32:06,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-07 16:32:06,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:06,046 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] [2021-11-07 16:32:06,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 16:32:06,046 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:06,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:06,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1677421280, now seen corresponding path program 1 times [2021-11-07 16:32:06,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:06,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542471218] [2021-11-07 16:32:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:06,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:06,223 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 16:32:06,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:06,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542471218] [2021-11-07 16:32:06,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542471218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:32:06,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27552502] [2021-11-07 16:32:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:06,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:06,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:32:06,227 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 16:32:06,256 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 16:32:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:07,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:32:07,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:32:07,906 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 16:32:07,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:32:07,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27552502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:07,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:32:07,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:32:07,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827739691] [2021-11-07 16:32:07,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:07,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:32:07,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:07,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:32:07,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:07,908 INFO L87 Difference]: Start difference. First operand 22383 states and 28899 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 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 16:32:08,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:08,330 INFO L93 Difference]: Finished difference Result 44682 states and 57704 transitions. [2021-11-07 16:32:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:32:08,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 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 209 [2021-11-07 16:32:08,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:08,366 INFO L225 Difference]: With dead ends: 44682 [2021-11-07 16:32:08,367 INFO L226 Difference]: Without dead ends: 22383 [2021-11-07 16:32:08,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.24ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:08,402 INFO L933 BasicCegarLoop]: 6966 mSDtfsCounter, 6818 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6818 SdHoareTripleChecker+Valid, 6966 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.38ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.35ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:08,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6818 Valid, 6966 Invalid, 13 Unknown, 0 Unchecked, 7.38ms Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 14.35ms Time] [2021-11-07 16:32:08,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22383 states. [2021-11-07 16:32:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22383 to 22383. [2021-11-07 16:32:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22383 states, 22376 states have (on average 1.2904451197711835) internal successors, (28875), 22382 states have internal predecessors, (28875), 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 16:32:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22383 states to 22383 states and 28875 transitions. [2021-11-07 16:32:08,881 INFO L78 Accepts]: Start accepts. Automaton has 22383 states and 28875 transitions. Word has length 209 [2021-11-07 16:32:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:08,881 INFO L470 AbstractCegarLoop]: Abstraction has 22383 states and 28875 transitions. [2021-11-07 16:32:08,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 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 16:32:08,881 INFO L276 IsEmpty]: Start isEmpty. Operand 22383 states and 28875 transitions. [2021-11-07 16:32:08,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 16:32:08,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:08,890 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] [2021-11-07 16:32:08,923 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 16:32:09,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:09,116 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:09,116 INFO L85 PathProgramCache]: Analyzing trace with hash -460206696, now seen corresponding path program 1 times [2021-11-07 16:32:09,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:09,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717906318] [2021-11-07 16:32:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:09,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:09,400 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 16:32:09,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:09,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717906318] [2021-11-07 16:32:09,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717906318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:32:09,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14585939] [2021-11-07 16:32:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:09,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:32:09,402 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 16:32:09,431 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 16:32:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:10,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 2838 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:32:10,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:32:10,878 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 16:32:10,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:32:10,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14585939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:10,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:32:10,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:32:10,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734595554] [2021-11-07 16:32:10,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:10,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:32:10,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:32:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:10,880 INFO L87 Difference]: Start difference. First operand 22383 states and 28875 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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 16:32:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:11,375 INFO L93 Difference]: Finished difference Result 44682 states and 57656 transitions. [2021-11-07 16:32:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:32:11,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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 16:32:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:11,408 INFO L225 Difference]: With dead ends: 44682 [2021-11-07 16:32:11,408 INFO L226 Difference]: Without dead ends: 22383 [2021-11-07 16:32:11,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.75ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:11,440 INFO L933 BasicCegarLoop]: 6959 mSDtfsCounter, 6810 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6810 SdHoareTripleChecker+Valid, 6959 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.28ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.08ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:11,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6810 Valid, 6959 Invalid, 13 Unknown, 0 Unchecked, 7.28ms Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 17.08ms Time] [2021-11-07 16:32:11,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22383 states. [2021-11-07 16:32:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22383 to 22383. [2021-11-07 16:32:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22383 states, 22376 states have (on average 1.2893725420092956) internal successors, (28851), 22382 states have internal predecessors, (28851), 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 16:32:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22383 states to 22383 states and 28851 transitions. [2021-11-07 16:32:11,897 INFO L78 Accepts]: Start accepts. Automaton has 22383 states and 28851 transitions. Word has length 210 [2021-11-07 16:32:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:11,898 INFO L470 AbstractCegarLoop]: Abstraction has 22383 states and 28851 transitions. [2021-11-07 16:32:11,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 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 16:32:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 22383 states and 28851 transitions. [2021-11-07 16:32:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 16:32:11,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:11,904 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] [2021-11-07 16:32:11,933 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 16:32:12,131 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,SelfDestructingSolverStorable9 [2021-11-07 16:32:12,132 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1381111301, now seen corresponding path program 1 times [2021-11-07 16:32:12,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:12,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335435164] [2021-11-07 16:32:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:12,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:12,378 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 16:32:12,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:12,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335435164] [2021-11-07 16:32:12,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335435164] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:32:12,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336301151] [2021-11-07 16:32:12,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:12,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:12,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:32:12,384 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 16:32:12,411 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 16:32:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:13,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2839 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:32:13,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:32:13,741 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 16:32:13,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:32:13,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336301151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:13,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:32:13,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:32:13,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513705290] [2021-11-07 16:32:13,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:13,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:32:13,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:13,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:32:13,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:13,743 INFO L87 Difference]: Start difference. First operand 22383 states and 28851 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 16:32:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:14,141 INFO L93 Difference]: Finished difference Result 44682 states and 57608 transitions. [2021-11-07 16:32:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:32:14,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 16:32:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:14,167 INFO L225 Difference]: With dead ends: 44682 [2021-11-07 16:32:14,167 INFO L226 Difference]: Without dead ends: 22383 [2021-11-07 16:32:14,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.58ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:14,197 INFO L933 BasicCegarLoop]: 6952 mSDtfsCounter, 6802 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6802 SdHoareTripleChecker+Valid, 6952 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.87ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.97ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:14,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6802 Valid, 6952 Invalid, 13 Unknown, 0 Unchecked, 5.87ms Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 12.97ms Time] [2021-11-07 16:32:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22383 states. [2021-11-07 16:32:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22383 to 22383. [2021-11-07 16:32:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22383 states, 22376 states have (on average 1.288299964247408) internal successors, (28827), 22382 states have internal predecessors, (28827), 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 16:32:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22383 states to 22383 states and 28827 transitions. [2021-11-07 16:32:14,633 INFO L78 Accepts]: Start accepts. Automaton has 22383 states and 28827 transitions. Word has length 211 [2021-11-07 16:32:14,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:14,633 INFO L470 AbstractCegarLoop]: Abstraction has 22383 states and 28827 transitions. [2021-11-07 16:32:14,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 16:32:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 22383 states and 28827 transitions. [2021-11-07 16:32:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-07 16:32:14,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:14,639 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] [2021-11-07 16:32:14,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 16:32:14,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:14,840 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:14,840 INFO L85 PathProgramCache]: Analyzing trace with hash 135765971, now seen corresponding path program 1 times [2021-11-07 16:32:14,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:14,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682548993] [2021-11-07 16:32:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:14,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:14,996 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 16:32:14,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:14,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682548993] [2021-11-07 16:32:14,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682548993] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:32:14,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560597280] [2021-11-07 16:32:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:14,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:14,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:32:15,000 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 16:32:15,075 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 16:32:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:15,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:32:15,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:32:16,356 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 16:32:16,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:32:16,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560597280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:16,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:32:16,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:32:16,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155531291] [2021-11-07 16:32:16,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:16,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:32:16,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:16,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:32:16,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:16,359 INFO L87 Difference]: Start difference. First operand 22383 states and 28827 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 16:32:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:16,873 INFO L93 Difference]: Finished difference Result 44682 states and 57560 transitions. [2021-11-07 16:32:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:32:16,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 16:32:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:16,901 INFO L225 Difference]: With dead ends: 44682 [2021-11-07 16:32:16,902 INFO L226 Difference]: Without dead ends: 22383 [2021-11-07 16:32:16,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.37ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:16,929 INFO L933 BasicCegarLoop]: 6945 mSDtfsCounter, 6794 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6794 SdHoareTripleChecker+Valid, 6945 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.91ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.98ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:16,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6794 Valid, 6945 Invalid, 13 Unknown, 0 Unchecked, 6.91ms Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 12.98ms Time] [2021-11-07 16:32:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22383 states. [2021-11-07 16:32:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22383 to 22383. [2021-11-07 16:32:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22383 states, 22376 states have (on average 1.2872273864855202) internal successors, (28803), 22382 states have internal predecessors, (28803), 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 16:32:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22383 states to 22383 states and 28803 transitions. [2021-11-07 16:32:17,454 INFO L78 Accepts]: Start accepts. Automaton has 22383 states and 28803 transitions. Word has length 212 [2021-11-07 16:32:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:17,454 INFO L470 AbstractCegarLoop]: Abstraction has 22383 states and 28803 transitions. [2021-11-07 16:32:17,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 16:32:17,454 INFO L276 IsEmpty]: Start isEmpty. Operand 22383 states and 28803 transitions. [2021-11-07 16:32:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-07 16:32:17,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:17,460 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 16:32:17,484 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 16:32:17,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:17,666 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash -85529898, now seen corresponding path program 1 times [2021-11-07 16:32:17,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:17,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17800105] [2021-11-07 16:32:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:17,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:17,836 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 16:32:17,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:17,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17800105] [2021-11-07 16:32:17,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17800105] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:32:17,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68217465] [2021-11-07 16:32:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:17,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:32:17,838 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 16:32:17,855 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 16:32:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:18,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 2841 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:32:18,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:32:19,127 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 16:32:19,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:32:19,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68217465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:19,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:32:19,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:32:19,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64154580] [2021-11-07 16:32:19,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:19,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:32:19,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:32:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:19,131 INFO L87 Difference]: Start difference. First operand 22383 states and 28803 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 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 16:32:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:19,617 INFO L93 Difference]: Finished difference Result 44682 states and 57512 transitions. [2021-11-07 16:32:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:32:19,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 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 16:32:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:19,649 INFO L225 Difference]: With dead ends: 44682 [2021-11-07 16:32:19,649 INFO L226 Difference]: Without dead ends: 22383 [2021-11-07 16:32:19,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.86ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:19,680 INFO L933 BasicCegarLoop]: 6938 mSDtfsCounter, 6786 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6786 SdHoareTripleChecker+Valid, 6938 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.38ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:19,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6786 Valid, 6938 Invalid, 13 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 13.38ms Time] [2021-11-07 16:32:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22383 states. [2021-11-07 16:32:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22383 to 22383. [2021-11-07 16:32:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22383 states, 22376 states have (on average 1.2861548087236325) internal successors, (28779), 22382 states have internal predecessors, (28779), 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 16:32:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22383 states to 22383 states and 28779 transitions. [2021-11-07 16:32:20,320 INFO L78 Accepts]: Start accepts. Automaton has 22383 states and 28779 transitions. Word has length 213 [2021-11-07 16:32:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:20,320 INFO L470 AbstractCegarLoop]: Abstraction has 22383 states and 28779 transitions. [2021-11-07 16:32:20,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 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 16:32:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 22383 states and 28779 transitions. [2021-11-07 16:32:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 16:32:20,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:20,326 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] [2021-11-07 16:32:20,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 16:32:20,527 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,SelfDestructingSolverStorable12 [2021-11-07 16:32:20,527 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:20,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1644381710, now seen corresponding path program 1 times [2021-11-07 16:32:20,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:20,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187518525] [2021-11-07 16:32:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:20,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:20,693 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 16:32:20,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:20,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187518525] [2021-11-07 16:32:20,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187518525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:32:20,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469238851] [2021-11-07 16:32:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:20,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:20,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:32:20,696 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 16:32:20,697 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 16:32:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:21,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:32:21,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:32:21,939 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 16:32:21,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:32:21,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469238851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:21,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:32:21,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 16:32:21,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668672873] [2021-11-07 16:32:21,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:21,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:32:21,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:21,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:32:21,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:21,941 INFO L87 Difference]: Start difference. First operand 22383 states and 28779 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 16:32:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:22,466 INFO L93 Difference]: Finished difference Result 44682 states and 57464 transitions. [2021-11-07 16:32:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:32:22,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 214 [2021-11-07 16:32:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:22,497 INFO L225 Difference]: With dead ends: 44682 [2021-11-07 16:32:22,497 INFO L226 Difference]: Without dead ends: 22383 [2021-11-07 16:32:22,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.46ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:22,531 INFO L933 BasicCegarLoop]: 6931 mSDtfsCounter, 6778 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6778 SdHoareTripleChecker+Valid, 6931 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.73ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.95ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:22,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6778 Valid, 6931 Invalid, 13 Unknown, 0 Unchecked, 6.73ms Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 12.95ms Time] [2021-11-07 16:32:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22383 states. [2021-11-07 16:32:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22383 to 22383. [2021-11-07 16:32:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22383 states, 22376 states have (on average 1.2850822309617447) internal successors, (28755), 22382 states have internal predecessors, (28755), 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 16:32:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22383 states to 22383 states and 28755 transitions. [2021-11-07 16:32:23,241 INFO L78 Accepts]: Start accepts. Automaton has 22383 states and 28755 transitions. Word has length 214 [2021-11-07 16:32:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:23,241 INFO L470 AbstractCegarLoop]: Abstraction has 22383 states and 28755 transitions. [2021-11-07 16:32:23,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 16:32:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 22383 states and 28755 transitions. [2021-11-07 16:32:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-07 16:32:23,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:23,249 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 16:32:23,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-07 16:32:23,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:23,460 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash -562784335, now seen corresponding path program 1 times [2021-11-07 16:32:23,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:23,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029383940] [2021-11-07 16:32:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:23,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:23,645 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 16:32:23,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:23,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029383940] [2021-11-07 16:32:23,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029383940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:32:23,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023217395] [2021-11-07 16:32:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:23,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:23,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:32:23,648 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 16:32:23,649 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 16:32:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:24,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 2843 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:32:24,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:32:24,830 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 16:32:24,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:32:25,186 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 16:32:25,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023217395] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:32:25,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:32:25,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 16:32:25,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250698670] [2021-11-07 16:32:25,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:32:25,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:32:25,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:25,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:32:25,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:32:25,189 INFO L87 Difference]: Start difference. First operand 22383 states and 28755 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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 16:32:26,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:26,996 INFO L93 Difference]: Finished difference Result 48042 states and 61784 transitions. [2021-11-07 16:32:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 16:32:26,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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 215 [2021-11-07 16:32:26,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:27,040 INFO L225 Difference]: With dead ends: 48042 [2021-11-07 16:32:27,040 INFO L226 Difference]: Without dead ends: 25743 [2021-11-07 16:32:27,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 18.19ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:32:27,071 INFO L933 BasicCegarLoop]: 6818 mSDtfsCounter, 2874 mSDsluCounter, 20334 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 819.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 27152 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.72ms SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 975.12ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:27,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2874 Valid, 27152 Invalid, 754 Unknown, 0 Unchecked, 20.72ms Time], IncrementalHoareTripleChecker [194 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 975.12ms Time] [2021-11-07 16:32:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25743 states. [2021-11-07 16:32:27,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25743 to 25743. [2021-11-07 16:32:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25743 states, 25736 states have (on average 1.2805020205160087) internal successors, (32955), 25742 states have internal predecessors, (32955), 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 16:32:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25743 states to 25743 states and 32955 transitions. [2021-11-07 16:32:27,906 INFO L78 Accepts]: Start accepts. Automaton has 25743 states and 32955 transitions. Word has length 215 [2021-11-07 16:32:27,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:27,906 INFO L470 AbstractCegarLoop]: Abstraction has 25743 states and 32955 transitions. [2021-11-07 16:32:27,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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 16:32:27,907 INFO L276 IsEmpty]: Start isEmpty. Operand 25743 states and 32955 transitions. [2021-11-07 16:32:27,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-07 16:32:27,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:27,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:32:27,936 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 16:32:28,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:28,116 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1663385613, now seen corresponding path program 1 times [2021-11-07 16:32:28,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:28,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403713891] [2021-11-07 16:32:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:28,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:28,534 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 16:32:28,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:28,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403713891] [2021-11-07 16:32:28,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403713891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:28,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:32:28,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:32:28,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903736236] [2021-11-07 16:32:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:28,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:32:28,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:32:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:32:28,536 INFO L87 Difference]: Start difference. First operand 25743 states and 32955 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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 16:32:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:31,726 INFO L93 Difference]: Finished difference Result 93922 states and 119963 transitions. [2021-11-07 16:32:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:32:31,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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 233 [2021-11-07 16:32:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:31,942 INFO L225 Difference]: With dead ends: 93922 [2021-11-07 16:32:31,942 INFO L226 Difference]: Without dead ends: 68263 [2021-11-07 16:32:31,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.65ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:32:31,978 INFO L933 BasicCegarLoop]: 11889 mSDtfsCounter, 27675 mSDsluCounter, 26804 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 394.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27675 SdHoareTripleChecker+Valid, 38693 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.35ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 466.84ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:31,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27675 Valid, 38693 Invalid, 241 Unknown, 0 Unchecked, 63.35ms Time], IncrementalHoareTripleChecker [52 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 466.84ms Time] [2021-11-07 16:32:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68263 states. [2021-11-07 16:32:33,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68263 to 25815. [2021-11-07 16:32:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25815 states, 25808 states have (on average 1.27971946683199) internal successors, (33027), 25814 states have internal predecessors, (33027), 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 16:32:33,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25815 states to 25815 states and 33027 transitions. [2021-11-07 16:32:33,369 INFO L78 Accepts]: Start accepts. Automaton has 25815 states and 33027 transitions. Word has length 233 [2021-11-07 16:32:33,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:33,371 INFO L470 AbstractCegarLoop]: Abstraction has 25815 states and 33027 transitions. [2021-11-07 16:32:33,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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 16:32:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand 25815 states and 33027 transitions. [2021-11-07 16:32:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-07 16:32:33,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:32:33,381 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-07 16:32:33,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 16:32:33,382 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 16:32:33,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:32:33,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1389385201, now seen corresponding path program 2 times [2021-11-07 16:32:33,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:32:33,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069314964] [2021-11-07 16:32:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:32:33,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:32:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:32:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-07 16:32:33,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:32:33,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069314964] [2021-11-07 16:32:33,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069314964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:32:33,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324913925] [2021-11-07 16:32:33,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 16:32:33,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:32:33,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:32:33,646 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 16:32:33,647 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 16:32:55,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 16:32:55,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 16:32:55,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 16:32:55,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:32:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-07 16:32:55,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:32:55,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324913925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:32:55,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:32:55,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-07 16:32:55,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858704378] [2021-11-07 16:32:55,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:32:55,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:32:55,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:32:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:32:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:32:55,595 INFO L87 Difference]: Start difference. First operand 25815 states and 33027 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 16:32:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:32:57,841 INFO L93 Difference]: Finished difference Result 75665 states and 96743 transitions. [2021-11-07 16:32:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:32:57,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 239 [2021-11-07 16:32:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:32:57,842 INFO L225 Difference]: With dead ends: 75665 [2021-11-07 16:32:57,842 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 16:32:57,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.03ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:32:57,908 INFO L933 BasicCegarLoop]: 13131 mSDtfsCounter, 6676 mSDsluCounter, 6448 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6676 SdHoareTripleChecker+Valid, 19579 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.30ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.30ms IncrementalHoareTripleChecker+Time [2021-11-07 16:32:57,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6676 Valid, 19579 Invalid, 19 Unknown, 0 Unchecked, 17.30ms Time], IncrementalHoareTripleChecker [12 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 29.30ms Time] [2021-11-07 16:32:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 16:32:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 16:32:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 16:32:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 16:32:57,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 239 [2021-11-07 16:32:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:32:57,909 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 16:32:57,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 16:32:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 16:32:57,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 16:32:57,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-07 16:32:57,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-07 16:32:57,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-11-07 16:32:57,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-11-07 16:32:57,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-11-07 16:32:57,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-07 16:32:57,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-07 16:32:57,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 16:32:58,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 16:32:58,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.