./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fa270183f30c4108ea2b2e80e3a005f959ee3ae47a4a31957eaa79c7226d5c4e --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 06:53:28,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 06:53:28,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 06:53:28,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 06:53:28,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 06:53:28,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 06:53:28,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 06:53:28,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 06:53:28,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 06:53:28,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 06:53:28,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 06:53:28,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 06:53:28,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 06:53:28,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 06:53:28,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 06:53:28,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 06:53:28,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 06:53:28,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 06:53:28,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 06:53:28,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 06:53:28,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 06:53:28,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 06:53:28,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 06:53:28,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 06:53:28,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 06:53:28,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 06:53:28,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 06:53:28,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 06:53:28,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 06:53:28,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 06:53:28,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 06:53:28,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 06:53:28,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 06:53:28,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 06:53:28,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 06:53:28,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 06:53:28,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 06:53:28,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 06:53:28,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 06:53:28,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 06:53:28,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 06:53:28,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 06:53:28,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 06:53:28,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 06:53:28,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 06:53:28,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 06:53:28,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 06:53:28,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 06:53:28,488 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 06:53:28,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 06:53:28,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 06:53:28,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 06:53:28,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 06:53:28,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 06:53:28,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 06:53:28,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 06:53:28,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 06:53:28,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 06:53:28,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 06:53:28,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 06:53:28,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 06:53:28,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:53:28,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 06:53:28,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 06:53:28,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 06:53:28,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 06:53:28,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 06:53:28,492 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 06:53:28,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 06:53:28,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 06:53:28,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 06:53:28,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa270183f30c4108ea2b2e80e3a005f959ee3ae47a4a31957eaa79c7226d5c4e [2021-11-04 06:53:28,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 06:53:28,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 06:53:28,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 06:53:28,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 06:53:28,727 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 06:53:28,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i [2021-11-04 06:53:28,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb3493cb/6282a34709d54f58a5ff834c8b6cb8d3/FLAG259d20147 [2021-11-04 06:53:29,520 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 06:53:29,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i [2021-11-04 06:53:29,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb3493cb/6282a34709d54f58a5ff834c8b6cb8d3/FLAG259d20147 [2021-11-04 06:53:29,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb3493cb/6282a34709d54f58a5ff834c8b6cb8d3 [2021-11-04 06:53:29,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 06:53:29,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 06:53:29,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 06:53:29,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 06:53:29,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 06:53:29,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:53:29" (1/1) ... [2021-11-04 06:53:29,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ada71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:29, skipping insertion in model container [2021-11-04 06:53:29,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:53:29" (1/1) ... [2021-11-04 06:53:29,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 06:53:29,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 06:53:31,292 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i[277190,277203] [2021-11-04 06:53:31,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:53:31,577 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 06:53:31,953 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i[277190,277203] [2021-11-04 06:53:31,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:53:32,049 INFO L208 MainTranslator]: Completed translation [2021-11-04 06:53:32,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32 WrapperNode [2021-11-04 06:53:32,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 06:53:32,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 06:53:32,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 06:53:32,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 06:53:32,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:32,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:32,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 06:53:32,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 06:53:32,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 06:53:32,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 06:53:32,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:32,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:32,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:32,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:32,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:32,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:33,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:33,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 06:53:33,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 06:53:33,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 06:53:33,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 06:53:33,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (1/1) ... [2021-11-04 06:53:33,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:53:33,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:53:33,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 06:53:33,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 06:53:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 06:53:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 06:53:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 06:53:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 06:53:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 06:53:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 06:53:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 06:53:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 06:53:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 06:53:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 06:53:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 06:53:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 06:53:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 06:53:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 06:53:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 06:53:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 06:53:39,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 06:53:39,497 INFO L299 CfgBuilder]: Removed 2320 assume(true) statements. [2021-11-04 06:53:39,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:53:39 BoogieIcfgContainer [2021-11-04 06:53:39,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 06:53:39,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 06:53:39,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 06:53:39,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 06:53:39,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 06:53:29" (1/3) ... [2021-11-04 06:53:39,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff133e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:53:39, skipping insertion in model container [2021-11-04 06:53:39,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:53:32" (2/3) ... [2021-11-04 06:53:39,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff133e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:53:39, skipping insertion in model container [2021-11-04 06:53:39,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:53:39" (3/3) ... [2021-11-04 06:53:39,513 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i [2021-11-04 06:53:39,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 06:53:39,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 183 error locations. [2021-11-04 06:53:39,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 06:53:39,593 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 06:53:39,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 183 error locations. [2021-11-04 06:53:39,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 2726 states, 2542 states have (on average 1.465381589299764) internal successors, (3725), 2725 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:53:39,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-04 06:53:39,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:53:39,664 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] [2021-11-04 06:53:39,665 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr178ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:53:39,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:53:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1382866813, now seen corresponding path program 1 times [2021-11-04 06:53:39,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:53:39,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636147464] [2021-11-04 06:53:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:53:39,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:53:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:53:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:53:40,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:53:40,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636147464] [2021-11-04 06:53:40,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636147464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:53:40,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:53:40,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:53:40,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058625011] [2021-11-04 06:53:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:53:40,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 06:53:40,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:53:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 06:53:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:53:40,366 INFO L87 Difference]: Start difference. First operand has 2726 states, 2542 states have (on average 1.465381589299764) internal successors, (3725), 2725 states have internal predecessors, (3725), 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 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:53:44,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:53:47,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:53:50,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:53:56,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:54:03,268 INFO L93 Difference]: Finished difference Result 5448 states and 7445 transitions. [2021-11-04 06:54:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 06:54:03,271 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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 47 [2021-11-04 06:54:03,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:54:03,297 INFO L225 Difference]: With dead ends: 5448 [2021-11-04 06:54:03,297 INFO L226 Difference]: Without dead ends: 2716 [2021-11-04 06:54:03,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:54:03,308 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21124.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22453.34ms IncrementalHoareTripleChecker+Time [2021-11-04 06:54:03,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 3508 Unknown, 0 Unchecked, 30.64ms Time], IncrementalHoareTripleChecker [0 Valid, 3506 Invalid, 2 Unknown, 0 Unchecked, 22453.34ms Time] [2021-11-04 06:54:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2021-11-04 06:54:03,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 2716. [2021-11-04 06:54:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2533 states have (on average 1.380971180418476) internal successors, (3498), 2715 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:54:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3498 transitions. [2021-11-04 06:54:03,422 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3498 transitions. Word has length 47 [2021-11-04 06:54:03,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:54:03,423 INFO L470 AbstractCegarLoop]: Abstraction has 2716 states and 3498 transitions. [2021-11-04 06:54:03,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:54:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3498 transitions. [2021-11-04 06:54:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-04 06:54:03,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:54:03,425 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] [2021-11-04 06:54:03,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 06:54:03,426 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr178ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:54:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:54:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1138174919, now seen corresponding path program 1 times [2021-11-04 06:54:03,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:54:03,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100216206] [2021-11-04 06:54:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:54:03,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:54:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:54:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:54:03,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:54:03,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100216206] [2021-11-04 06:54:03,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100216206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:54:03,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:54:03,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:54:03,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538861736] [2021-11-04 06:54:03,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:54:03,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:54:03,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:54:03,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:54:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:54:03,833 INFO L87 Difference]: Start difference. First operand 2716 states and 3498 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:54:04,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:06,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:09,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:16,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:21,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:30,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:54:42,899 INFO L93 Difference]: Finished difference Result 5407 states and 6973 transitions. [2021-11-04 06:54:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:54:42,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2021-11-04 06:54:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:54:42,920 INFO L225 Difference]: With dead ends: 5407 [2021-11-04 06:54:42,921 INFO L226 Difference]: Without dead ends: 2719 [2021-11-04 06:54:42,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:54:42,929 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 6988 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36646.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.00ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6988 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38633.08ms IncrementalHoareTripleChecker+Time [2021-11-04 06:54:42,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6995 Unknown, 0 Unchecked, 64.00ms Time], IncrementalHoareTripleChecker [4 Valid, 6988 Invalid, 3 Unknown, 0 Unchecked, 38633.08ms Time] [2021-11-04 06:54:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2021-11-04 06:54:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2719. [2021-11-04 06:54:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2536 states have (on average 1.3805205047318612) internal successors, (3501), 2718 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:54:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3501 transitions. [2021-11-04 06:54:43,065 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3501 transitions. Word has length 47 [2021-11-04 06:54:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:54:43,066 INFO L470 AbstractCegarLoop]: Abstraction has 2719 states and 3501 transitions. [2021-11-04 06:54:43,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:54:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3501 transitions. [2021-11-04 06:54:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-04 06:54:43,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:54:43,076 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] [2021-11-04 06:54:43,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 06:54:43,077 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr178ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:54:43,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:54:43,078 INFO L85 PathProgramCache]: Analyzing trace with hash 710312051, now seen corresponding path program 1 times [2021-11-04 06:54:43,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:54:43,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754569952] [2021-11-04 06:54:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:54:43,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:54:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:54:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 06:54:43,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:54:43,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754569952] [2021-11-04 06:54:43,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754569952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:54:43,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:54:43,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:54:43,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198143623] [2021-11-04 06:54:43,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:54:43,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:54:43,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:54:43,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:54:43,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:54:43,410 INFO L87 Difference]: Start difference. First operand 2719 states and 3501 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:54:44,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:45,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:53,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:55,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:00,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:02,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:08,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:55:23,525 INFO L93 Difference]: Finished difference Result 7259 states and 9385 transitions. [2021-11-04 06:55:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:55:23,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-04 06:55:23,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:55:23,544 INFO L225 Difference]: With dead ends: 7259 [2021-11-04 06:55:23,544 INFO L226 Difference]: Without dead ends: 4579 [2021-11-04 06:55:23,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:55:23,552 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2422 mSDsluCounter, 3476 mSDsCounter, 0 mSdLazyCounter, 6981 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37251.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.66ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6981 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39533.27ms IncrementalHoareTripleChecker+Time [2021-11-04 06:55:23,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2422 Valid, 0 Invalid, 6986 Unknown, 0 Unchecked, 52.66ms Time], IncrementalHoareTripleChecker [3 Valid, 6981 Invalid, 2 Unknown, 0 Unchecked, 39533.27ms Time] [2021-11-04 06:55:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2021-11-04 06:55:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 4044. [2021-11-04 06:55:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 3861 states have (on average 1.3957523957523958) internal successors, (5389), 4043 states have internal predecessors, (5389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:55:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 5389 transitions. [2021-11-04 06:55:23,741 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 5389 transitions. Word has length 50 [2021-11-04 06:55:23,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:55:23,743 INFO L470 AbstractCegarLoop]: Abstraction has 4044 states and 5389 transitions. [2021-11-04 06:55:23,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:55:23,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 5389 transitions. [2021-11-04 06:55:23,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-04 06:55:23,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:55:23,749 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] [2021-11-04 06:55:23,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 06:55:23,750 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr170ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:55:23,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:55:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1752462733, now seen corresponding path program 1 times [2021-11-04 06:55:23,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:55:23,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730453412] [2021-11-04 06:55:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:55:23,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:55:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:55:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 06:55:23,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:55:23,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730453412] [2021-11-04 06:55:23,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730453412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:55:23,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:55:23,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:55:23,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136295981] [2021-11-04 06:55:23,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:55:23,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:55:23,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:55:23,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:55:23,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:55:23,984 INFO L87 Difference]: Start difference. First operand 4044 states and 5389 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:55:25,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:28,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:32,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:34,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:40,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:44,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:49,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:51,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:53,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:56:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:56:06,501 INFO L93 Difference]: Finished difference Result 10985 states and 14694 transitions. [2021-11-04 06:56:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:56:06,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-11-04 06:56:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:56:06,528 INFO L225 Difference]: With dead ends: 10985 [2021-11-04 06:56:06,528 INFO L226 Difference]: Without dead ends: 6980 [2021-11-04 06:56:06,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:56:06,538 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2322 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 6956 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39792.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.89ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6956 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42003.12ms IncrementalHoareTripleChecker+Time [2021-11-04 06:56:06,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2322 Valid, 0 Invalid, 6961 Unknown, 0 Unchecked, 35.89ms Time], IncrementalHoareTripleChecker [2 Valid, 6956 Invalid, 3 Unknown, 0 Unchecked, 42003.12ms Time] [2021-11-04 06:56:06,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6980 states. [2021-11-04 06:56:06,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6980 to 6731. [2021-11-04 06:56:06,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6731 states, 6548 states have (on average 1.4069945021380574) internal successors, (9213), 6730 states have internal predecessors, (9213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:56:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6731 states to 6731 states and 9213 transitions. [2021-11-04 06:56:06,745 INFO L78 Accepts]: Start accepts. Automaton has 6731 states and 9213 transitions. Word has length 53 [2021-11-04 06:56:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:56:06,746 INFO L470 AbstractCegarLoop]: Abstraction has 6731 states and 9213 transitions. [2021-11-04 06:56:06,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:56:06,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6731 states and 9213 transitions. [2021-11-04 06:56:06,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-04 06:56:06,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:56:06,747 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] [2021-11-04 06:56:06,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 06:56:06,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr130ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:56:06,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:56:06,748 INFO L85 PathProgramCache]: Analyzing trace with hash 545090570, now seen corresponding path program 1 times [2021-11-04 06:56:06,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:56:06,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249183143] [2021-11-04 06:56:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:56:06,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:56:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:56:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 06:56:06,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:56:06,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249183143] [2021-11-04 06:56:06,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249183143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:56:06,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:56:06,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:56:06,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61552368] [2021-11-04 06:56:06,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:56:06,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:56:06,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:56:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:56:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:56:06,970 INFO L87 Difference]: Start difference. First operand 6731 states and 9213 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:56:08,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:56:18,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:56:21,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:56:27,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:56:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:56:43,283 INFO L93 Difference]: Finished difference Result 17361 states and 23790 transitions. [2021-11-04 06:56:43,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:56:43,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-04 06:56:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:56:43,319 INFO L225 Difference]: With dead ends: 17361 [2021-11-04 06:56:43,320 INFO L226 Difference]: Without dead ends: 10669 [2021-11-04 06:56:43,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:56:43,328 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1825 mSDsluCounter, 3452 mSDsCounter, 0 mSdLazyCounter, 7109 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33866.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.52ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7109 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35810.60ms IncrementalHoareTripleChecker+Time [2021-11-04 06:56:43,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 0 Invalid, 7113 Unknown, 0 Unchecked, 34.52ms Time], IncrementalHoareTripleChecker [2 Valid, 7109 Invalid, 2 Unknown, 0 Unchecked, 35810.60ms Time] [2021-11-04 06:56:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2021-11-04 06:56:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10469. [2021-11-04 06:56:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10469 states, 10286 states have (on average 1.410169161967723) internal successors, (14505), 10468 states have internal predecessors, (14505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:56:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10469 states to 10469 states and 14505 transitions. [2021-11-04 06:56:43,595 INFO L78 Accepts]: Start accepts. Automaton has 10469 states and 14505 transitions. Word has length 55 [2021-11-04 06:56:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:56:43,598 INFO L470 AbstractCegarLoop]: Abstraction has 10469 states and 14505 transitions. [2021-11-04 06:56:43,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:56:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 10469 states and 14505 transitions. [2021-11-04 06:56:43,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-04 06:56:43,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:56:43,601 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] [2021-11-04 06:56:43,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 06:56:43,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:56:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:56:43,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1018511110, now seen corresponding path program 1 times [2021-11-04 06:56:43,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:56:43,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117916627] [2021-11-04 06:56:43,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:56:43,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:56:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:56:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 06:56:43,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:56:43,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117916627] [2021-11-04 06:56:43,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117916627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:56:43,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:56:43,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:56:43,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148063445] [2021-11-04 06:56:43,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:56:43,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:56:43,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:56:43,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:56:43,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:56:43,839 INFO L87 Difference]: Start difference. First operand 10469 states and 14505 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:56:44,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:56:52,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:56:58,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:57:07,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:57:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:57:24,062 INFO L93 Difference]: Finished difference Result 23555 states and 32711 transitions. [2021-11-04 06:57:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:57:24,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-04 06:57:24,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:57:24,096 INFO L225 Difference]: With dead ends: 23555 [2021-11-04 06:57:24,096 INFO L226 Difference]: Without dead ends: 13125 [2021-11-04 06:57:24,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:57:24,112 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 979 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 7860 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37563.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.37ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7860 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39634.84ms IncrementalHoareTripleChecker+Time [2021-11-04 06:57:24,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 0 Invalid, 7865 Unknown, 0 Unchecked, 36.37ms Time], IncrementalHoareTripleChecker [3 Valid, 7860 Invalid, 2 Unknown, 0 Unchecked, 39634.84ms Time] [2021-11-04 06:57:24,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13125 states. [2021-11-04 06:57:24,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13125 to 13005. [2021-11-04 06:57:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13005 states, 12822 states have (on average 1.4170176259553893) internal successors, (18169), 13004 states have internal predecessors, (18169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:57:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13005 states to 13005 states and 18169 transitions. [2021-11-04 06:57:24,395 INFO L78 Accepts]: Start accepts. Automaton has 13005 states and 18169 transitions. Word has length 57 [2021-11-04 06:57:24,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:57:24,395 INFO L470 AbstractCegarLoop]: Abstraction has 13005 states and 18169 transitions. [2021-11-04 06:57:24,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:57:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 13005 states and 18169 transitions. [2021-11-04 06:57:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-04 06:57:24,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:57:24,397 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] [2021-11-04 06:57:24,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 06:57:24,397 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr178ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:57:24,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:57:24,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1485062997, now seen corresponding path program 1 times [2021-11-04 06:57:24,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:57:24,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545244478] [2021-11-04 06:57:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:57:24,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:57:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:57:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 06:57:24,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:57:24,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545244478] [2021-11-04 06:57:24,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545244478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:57:24,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:57:24,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:57:24,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605606041] [2021-11-04 06:57:24,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:57:24,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:57:24,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:57:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:57:24,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:57:24,647 INFO L87 Difference]: Start difference. First operand 13005 states and 18169 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:57:26,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:57:34,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:57:41,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:57:53,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:58:06,519 INFO L93 Difference]: Finished difference Result 25008 states and 35057 transitions. [2021-11-04 06:58:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:58:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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 59 [2021-11-04 06:58:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:58:06,582 INFO L225 Difference]: With dead ends: 25008 [2021-11-04 06:58:06,582 INFO L226 Difference]: Without dead ends: 25006 [2021-11-04 06:58:06,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:58:06,598 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2434 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 6940 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39100.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6940 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41248.18ms IncrementalHoareTripleChecker+Time [2021-11-04 06:58:06,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2434 Valid, 0 Invalid, 6944 Unknown, 0 Unchecked, 36.91ms Time], IncrementalHoareTripleChecker [1 Valid, 6940 Invalid, 3 Unknown, 0 Unchecked, 41248.18ms Time] [2021-11-04 06:58:06,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25006 states. [2021-11-04 06:58:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25006 to 23610. [2021-11-04 06:58:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23610 states, 23427 states have (on average 1.4210526315789473) internal successors, (33291), 23609 states have internal predecessors, (33291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:58:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23610 states to 23610 states and 33291 transitions. [2021-11-04 06:58:07,162 INFO L78 Accepts]: Start accepts. Automaton has 23610 states and 33291 transitions. Word has length 59 [2021-11-04 06:58:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:58:07,163 INFO L470 AbstractCegarLoop]: Abstraction has 23610 states and 33291 transitions. [2021-11-04 06:58:07,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:58:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 23610 states and 33291 transitions. [2021-11-04 06:58:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-04 06:58:07,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:58:07,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:58:07,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 06:58:07,164 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr179ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:58:07,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:58:07,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1207702169, now seen corresponding path program 1 times [2021-11-04 06:58:07,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:58:07,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301288985] [2021-11-04 06:58:07,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:58:07,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:58:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:58:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 06:58:07,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:58:07,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301288985] [2021-11-04 06:58:07,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301288985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:58:07,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:58:07,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:58:07,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235427462] [2021-11-04 06:58:07,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:58:07,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:58:07,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:58:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:58:07,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:58:07,428 INFO L87 Difference]: Start difference. First operand 23610 states and 33291 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:58:08,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:13,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:16,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:18,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:24,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:32,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:35,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:51,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:58:51,064 INFO L93 Difference]: Finished difference Result 25009 states and 35058 transitions. [2021-11-04 06:58:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:58:51,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-04 06:58:51,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:58:51,132 INFO L225 Difference]: With dead ends: 25009 [2021-11-04 06:58:51,133 INFO L226 Difference]: Without dead ends: 25007 [2021-11-04 06:58:51,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:58:51,150 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2431 mSDsluCounter, 3447 mSDsCounter, 0 mSdLazyCounter, 6943 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40684.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6943 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42997.00ms IncrementalHoareTripleChecker+Time [2021-11-04 06:58:51,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2431 Valid, 0 Invalid, 6947 Unknown, 0 Unchecked, 37.47ms Time], IncrementalHoareTripleChecker [1 Valid, 6943 Invalid, 3 Unknown, 0 Unchecked, 42997.00ms Time] [2021-11-04 06:58:51,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25007 states. [2021-11-04 06:58:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25007 to 23611. [2021-11-04 06:58:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23611 states, 23428 states have (on average 1.421034659381936) internal successors, (33292), 23610 states have internal predecessors, (33292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:58:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23611 states to 23611 states and 33292 transitions. [2021-11-04 06:58:51,784 INFO L78 Accepts]: Start accepts. Automaton has 23611 states and 33292 transitions. Word has length 60 [2021-11-04 06:58:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:58:51,785 INFO L470 AbstractCegarLoop]: Abstraction has 23611 states and 33292 transitions. [2021-11-04 06:58:51,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:58:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 23611 states and 33292 transitions. [2021-11-04 06:58:51,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-04 06:58:51,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:58:51,786 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] [2021-11-04 06:58:51,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 06:58:51,786 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr180ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:58:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:58:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1215923595, now seen corresponding path program 1 times [2021-11-04 06:58:51,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:58:51,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044800684] [2021-11-04 06:58:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:58:51,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:58:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:58:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 06:58:52,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:58:52,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044800684] [2021-11-04 06:58:52,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044800684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:58:52,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:58:52,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:58:52,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123135117] [2021-11-04 06:58:52,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:58:52,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:58:52,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:58:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:58:52,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:58:52,027 INFO L87 Difference]: Start difference. First operand 23611 states and 33292 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:58:53,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:00,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:07,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:59:30,569 INFO L93 Difference]: Finished difference Result 25010 states and 35059 transitions. [2021-11-04 06:59:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:59:30,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2021-11-04 06:59:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:59:30,625 INFO L225 Difference]: With dead ends: 25010 [2021-11-04 06:59:30,625 INFO L226 Difference]: Without dead ends: 25008 [2021-11-04 06:59:30,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:59:30,638 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2428 mSDsluCounter, 3450 mSDsCounter, 0 mSdLazyCounter, 6947 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35549.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37883.06ms IncrementalHoareTripleChecker+Time [2021-11-04 06:59:30,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2428 Valid, 0 Invalid, 6950 Unknown, 0 Unchecked, 37.79ms Time], IncrementalHoareTripleChecker [1 Valid, 6947 Invalid, 2 Unknown, 0 Unchecked, 37883.06ms Time] [2021-11-04 06:59:30,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25008 states. [2021-11-04 06:59:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25008 to 23612. [2021-11-04 06:59:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23612 states, 23429 states have (on average 1.4210166887191087) internal successors, (33293), 23611 states have internal predecessors, (33293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:59:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23612 states to 23612 states and 33293 transitions. [2021-11-04 06:59:31,217 INFO L78 Accepts]: Start accepts. Automaton has 23612 states and 33293 transitions. Word has length 61 [2021-11-04 06:59:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:59:31,217 INFO L470 AbstractCegarLoop]: Abstraction has 23612 states and 33293 transitions. [2021-11-04 06:59:31,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:59:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 23612 states and 33293 transitions. [2021-11-04 06:59:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-04 06:59:31,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:59:31,219 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] [2021-11-04 06:59:31,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 06:59:31,219 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr181ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 06:59:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:59:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 961089059, now seen corresponding path program 1 times [2021-11-04 06:59:31,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:59:31,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540051346] [2021-11-04 06:59:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:59:31,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:59:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:59:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 06:59:31,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:59:31,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540051346] [2021-11-04 06:59:31,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540051346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:59:31,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:59:31,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:59:31,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810551708] [2021-11-04 06:59:31,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:59:31,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:59:31,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:59:31,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:59:31,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:59:31,472 INFO L87 Difference]: Start difference. First operand 23612 states and 33293 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:59:32,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:35,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:37,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:39,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:42,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:44,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:47,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:54,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:59,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:00:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:00:19,433 INFO L93 Difference]: Finished difference Result 67128 states and 95123 transitions. [2021-11-04 07:00:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:00:19,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 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 62 [2021-11-04 07:00:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:00:19,516 INFO L225 Difference]: With dead ends: 67128 [2021-11-04 07:00:19,516 INFO L226 Difference]: Without dead ends: 43555 [2021-11-04 07:00:19,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:00:19,545 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2406 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 7526 mSolverCounterSat, 41 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44237.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.70ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 7526 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46698.41ms IncrementalHoareTripleChecker+Time [2021-11-04 07:00:19,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2406 Valid, 0 Invalid, 7571 Unknown, 0 Unchecked, 42.70ms Time], IncrementalHoareTripleChecker [41 Valid, 7526 Invalid, 4 Unknown, 0 Unchecked, 46698.41ms Time] [2021-11-04 07:00:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43555 states. [2021-11-04 07:00:20,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43555 to 35664. [2021-11-04 07:00:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35664 states, 35481 states have (on average 1.4173783151545898) internal successors, (50290), 35663 states have internal predecessors, (50290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:00:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35664 states to 35664 states and 50290 transitions. [2021-11-04 07:00:20,429 INFO L78 Accepts]: Start accepts. Automaton has 35664 states and 50290 transitions. Word has length 62 [2021-11-04 07:00:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:00:20,429 INFO L470 AbstractCegarLoop]: Abstraction has 35664 states and 50290 transitions. [2021-11-04 07:00:20,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:00:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 35664 states and 50290 transitions. [2021-11-04 07:00:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-04 07:00:20,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:00:20,430 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] [2021-11-04 07:00:20,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 07:00:20,431 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr182ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 07:00:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:00:20,431 INFO L85 PathProgramCache]: Analyzing trace with hash -270995393, now seen corresponding path program 1 times [2021-11-04 07:00:20,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:00:20,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477476176] [2021-11-04 07:00:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:00:20,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:00:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:00:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 07:00:20,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:00:20,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477476176] [2021-11-04 07:00:20,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477476176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:00:20,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:00:20,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:00:20,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955530370] [2021-11-04 07:00:20,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:00:20,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:00:20,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:00:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:00:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:00:20,667 INFO L87 Difference]: Start difference. First operand 35664 states and 50290 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:00:22,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:00:25,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:00:27,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:00:30,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:00:33,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:00:35,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:00:42,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:00:44,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:01:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:01:09,031 INFO L93 Difference]: Finished difference Result 99080 states and 141557 transitions. [2021-11-04 07:01:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:01:09,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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 63 [2021-11-04 07:01:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:01:09,175 INFO L225 Difference]: With dead ends: 99080 [2021-11-04 07:01:09,176 INFO L226 Difference]: Without dead ends: 63448 [2021-11-04 07:01:09,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:01:09,230 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3045 mSDsluCounter, 2446 mSDsCounter, 0 mSdLazyCounter, 7757 mSolverCounterSat, 309 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44261.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.09ms SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 7757 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46884.59ms IncrementalHoareTripleChecker+Time [2021-11-04 07:01:09,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3045 Valid, 0 Invalid, 8070 Unknown, 0 Unchecked, 41.09ms Time], IncrementalHoareTripleChecker [309 Valid, 7757 Invalid, 4 Unknown, 0 Unchecked, 46884.59ms Time] [2021-11-04 07:01:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63448 states. [2021-11-04 07:01:10,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63448 to 59507. [2021-11-04 07:01:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59507 states, 59326 states have (on average 1.421484677881536) internal successors, (84331), 59506 states have internal predecessors, (84331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:01:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59507 states to 59507 states and 84331 transitions. [2021-11-04 07:01:10,728 INFO L78 Accepts]: Start accepts. Automaton has 59507 states and 84331 transitions. Word has length 63 [2021-11-04 07:01:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:01:10,728 INFO L470 AbstractCegarLoop]: Abstraction has 59507 states and 84331 transitions. [2021-11-04 07:01:10,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:01:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 59507 states and 84331 transitions. [2021-11-04 07:01:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-04 07:01:10,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:01:10,741 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] [2021-11-04 07:01:10,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 07:01:10,741 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr115ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 07:01:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:01:10,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1572103831, now seen corresponding path program 1 times [2021-11-04 07:01:10,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:01:10,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81638038] [2021-11-04 07:01:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:01:10,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:01:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:01:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 07:01:10,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:01:10,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81638038] [2021-11-04 07:01:10,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81638038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:01:10,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:01:10,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:01:10,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128204437] [2021-11-04 07:01:10,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:01:10,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:01:10,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:01:10,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:01:10,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:01:10,967 INFO L87 Difference]: Start difference. First operand 59507 states and 84331 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:01:12,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:01:13,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:01:16,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:01:20,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:01:27,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:01:37,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:01:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:01:52,967 INFO L93 Difference]: Finished difference Result 91919 states and 130137 transitions. [2021-11-04 07:01:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:01:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-04 07:01:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:01:53,032 INFO L225 Difference]: With dead ends: 91919 [2021-11-04 07:01:53,032 INFO L226 Difference]: Without dead ends: 32447 [2021-11-04 07:01:53,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:01:53,100 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 6994 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38602.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.74ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6994 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40779.10ms IncrementalHoareTripleChecker+Time [2021-11-04 07:01:53,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 6998 Unknown, 0 Unchecked, 30.74ms Time], IncrementalHoareTripleChecker [1 Valid, 6994 Invalid, 3 Unknown, 0 Unchecked, 40779.10ms Time] [2021-11-04 07:01:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32447 states. [2021-11-04 07:01:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32447 to 32175. [2021-11-04 07:01:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32175 states, 31994 states have (on average 1.4225167218853536) internal successors, (45512), 32174 states have internal predecessors, (45512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:01:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32175 states to 32175 states and 45512 transitions. [2021-11-04 07:01:53,940 INFO L78 Accepts]: Start accepts. Automaton has 32175 states and 45512 transitions. Word has length 84 [2021-11-04 07:01:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:01:53,941 INFO L470 AbstractCegarLoop]: Abstraction has 32175 states and 45512 transitions. [2021-11-04 07:01:53,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:01:53,941 INFO L276 IsEmpty]: Start isEmpty. Operand 32175 states and 45512 transitions. [2021-11-04 07:01:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-04 07:01:53,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:01:53,943 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 07:01:53,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 07:01:53,943 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr177ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 07:01:53,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:01:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash -950947718, now seen corresponding path program 1 times [2021-11-04 07:01:53,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:01:53,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516331056] [2021-11-04 07:01:53,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:01:53,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:01:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:01:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 07:01:54,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:01:54,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516331056] [2021-11-04 07:01:54,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516331056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:01:54,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:01:54,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:01:54,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809694767] [2021-11-04 07:01:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:01:54,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:01:54,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:01:54,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:01:54,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:01:54,421 INFO L87 Difference]: Start difference. First operand 32175 states and 45512 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:01:56,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:01:57,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:09,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:11,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:18,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:21,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:26,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:02:45,221 INFO L93 Difference]: Finished difference Result 75206 states and 106369 transitions. [2021-11-04 07:02:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:02:45,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 85 [2021-11-04 07:02:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:02:45,299 INFO L225 Difference]: With dead ends: 75206 [2021-11-04 07:02:45,299 INFO L226 Difference]: Without dead ends: 43095 [2021-11-04 07:02:45,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:02:45,334 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2348 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 8304 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46955.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.37ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 8304 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49551.30ms IncrementalHoareTripleChecker+Time [2021-11-04 07:02:45,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2348 Valid, 0 Invalid, 8337 Unknown, 0 Unchecked, 36.37ms Time], IncrementalHoareTripleChecker [30 Valid, 8304 Invalid, 3 Unknown, 0 Unchecked, 49551.30ms Time] [2021-11-04 07:02:45,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43095 states. [2021-11-04 07:02:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43095 to 42103. [2021-11-04 07:02:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42103 states, 41923 states have (on average 1.4246356415332873) internal successors, (59725), 42102 states have internal predecessors, (59725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:02:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42103 states to 42103 states and 59725 transitions. [2021-11-04 07:02:46,244 INFO L78 Accepts]: Start accepts. Automaton has 42103 states and 59725 transitions. Word has length 85 [2021-11-04 07:02:46,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:02:46,244 INFO L470 AbstractCegarLoop]: Abstraction has 42103 states and 59725 transitions. [2021-11-04 07:02:46,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:02:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 42103 states and 59725 transitions. [2021-11-04 07:02:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-04 07:02:46,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:02:46,247 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 07:02:46,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 07:02:46,247 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr177ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 07:02:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:02:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1760294344, now seen corresponding path program 1 times [2021-11-04 07:02:46,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:02:46,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521001312] [2021-11-04 07:02:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:02:46,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:02:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:02:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 07:02:46,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:02:46,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521001312] [2021-11-04 07:02:46,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521001312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:02:46,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:02:46,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 07:02:46,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838935932] [2021-11-04 07:02:46,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:02:46,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 07:02:46,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:02:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 07:02:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 07:02:46,515 INFO L87 Difference]: Start difference. First operand 42103 states and 59725 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:02:47,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:48,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:49,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:52,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:03:05,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:03:23,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:03:26,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:03:33,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:04:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:04:00,898 INFO L93 Difference]: Finished difference Result 63511 states and 89862 transitions. [2021-11-04 07:04:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 07:04:00,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 85 [2021-11-04 07:04:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:04:01,015 INFO L225 Difference]: With dead ends: 63511 [2021-11-04 07:04:01,016 INFO L226 Difference]: Without dead ends: 62296 [2021-11-04 07:04:01,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.82ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 07:04:01,038 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3945 mSDsluCounter, 10354 mSDsCounter, 0 mSdLazyCounter, 15286 mSolverCounterSat, 32 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69100.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 103.75ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 15286 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72950.81ms IncrementalHoareTripleChecker+Time [2021-11-04 07:04:01,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3945 Valid, 0 Invalid, 15321 Unknown, 0 Unchecked, 103.75ms Time], IncrementalHoareTripleChecker [32 Valid, 15286 Invalid, 3 Unknown, 0 Unchecked, 72950.81ms Time] [2021-11-04 07:04:01,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62296 states. [2021-11-04 07:04:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62296 to 41068. [2021-11-04 07:04:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41068 states, 40897 states have (on average 1.4209110692715847) internal successors, (58111), 41067 states have internal predecessors, (58111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:04:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41068 states to 41068 states and 58111 transitions. [2021-11-04 07:04:02,298 INFO L78 Accepts]: Start accepts. Automaton has 41068 states and 58111 transitions. Word has length 85 [2021-11-04 07:04:02,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:04:02,299 INFO L470 AbstractCegarLoop]: Abstraction has 41068 states and 58111 transitions. [2021-11-04 07:04:02,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:04:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 41068 states and 58111 transitions. [2021-11-04 07:04:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-04 07:04:02,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:04:02,321 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] [2021-11-04 07:04:02,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 07:04:02,322 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr115ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 07:04:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:04:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1550316887, now seen corresponding path program 1 times [2021-11-04 07:04:02,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:04:02,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910892887] [2021-11-04 07:04:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:04:02,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:04:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:04:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 07:04:03,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:04:03,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910892887] [2021-11-04 07:04:03,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910892887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 07:04:03,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858506773] [2021-11-04 07:04:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:04:03,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 07:04:03,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:04:03,044 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) [2021-11-04 07:04:03,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 07:04:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:04:03,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 3000 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 07:04:03,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 07:04:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 07:04:04,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 07:04:04,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858506773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:04:04,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 07:04:04,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 07:04:04,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541819578] [2021-11-04 07:04:04,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:04:04,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:04:04,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:04:04,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:04:04,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 07:04:04,291 INFO L87 Difference]: Start difference. First operand 41068 states and 58111 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:04:05,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:04:18,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:04:20,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:04:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:04:41,645 INFO L93 Difference]: Finished difference Result 88403 states and 125192 transitions. [2021-11-04 07:04:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:04:41,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-11-04 07:04:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:04:41,726 INFO L225 Difference]: With dead ends: 88403 [2021-11-04 07:04:41,727 INFO L226 Difference]: Without dead ends: 47399 [2021-11-04 07:04:41,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.97ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 07:04:41,765 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1054 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 6793 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33931.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.24ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 6793 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36013.45ms IncrementalHoareTripleChecker+Time [2021-11-04 07:04:41,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 0 Invalid, 6802 Unknown, 0 Unchecked, 31.24ms Time], IncrementalHoareTripleChecker [7 Valid, 6793 Invalid, 2 Unknown, 0 Unchecked, 36013.45ms Time] [2021-11-04 07:04:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47399 states. [2021-11-04 07:04:43,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47399 to 47200. [2021-11-04 07:04:43,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47200 states, 47029 states have (on average 1.4231431669820749) internal successors, (66929), 47199 states have internal predecessors, (66929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:04:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47200 states to 47200 states and 66929 transitions. [2021-11-04 07:04:43,188 INFO L78 Accepts]: Start accepts. Automaton has 47200 states and 66929 transitions. Word has length 89 [2021-11-04 07:04:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:04:43,188 INFO L470 AbstractCegarLoop]: Abstraction has 47200 states and 66929 transitions. [2021-11-04 07:04:43,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:04:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 47200 states and 66929 transitions. [2021-11-04 07:04:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-04 07:04:43,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:04:43,195 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 07:04:43,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 07:04:43,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-04 07:04:43,420 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr138ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 07:04:43,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:04:43,420 INFO L85 PathProgramCache]: Analyzing trace with hash -5953972, now seen corresponding path program 1 times [2021-11-04 07:04:43,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:04:43,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723492052] [2021-11-04 07:04:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:04:43,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:04:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:04:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 07:04:43,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:04:43,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723492052] [2021-11-04 07:04:43,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723492052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 07:04:43,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972554596] [2021-11-04 07:04:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:04:43,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 07:04:43,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:04:43,863 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) [2021-11-04 07:04:43,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 07:04:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:04:44,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 3061 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 07:04:44,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 07:04:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 07:04:45,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 07:04:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 07:04:45,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972554596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 07:04:45,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 07:04:45,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 07:04:45,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328438178] [2021-11-04 07:04:45,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 07:04:45,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 07:04:45,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:04:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 07:04:45,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 07:04:45,580 INFO L87 Difference]: Start difference. First operand 47200 states and 66929 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:04:46,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:04:48,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:04:50,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:04:53,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:05:15,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:05:18,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:05:49,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:05:49,820 INFO L93 Difference]: Finished difference Result 94396 states and 133878 transitions. [2021-11-04 07:05:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 07:05:49,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 93 [2021-11-04 07:05:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:05:49,903 INFO L225 Difference]: With dead ends: 94396 [2021-11-04 07:05:49,903 INFO L226 Difference]: Without dead ends: 47225 [2021-11-04 07:05:49,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 178.36ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 07:05:49,953 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 10371 mSDsCounter, 0 mSdLazyCounter, 13881 mSolverCounterSat, 42 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59528.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.31ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 13881 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62769.19ms IncrementalHoareTripleChecker+Time [2021-11-04 07:05:49,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13928 Unknown, 0 Unchecked, 58.31ms Time], IncrementalHoareTripleChecker [42 Valid, 13881 Invalid, 5 Unknown, 0 Unchecked, 62769.19ms Time] [2021-11-04 07:05:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47225 states. [2021-11-04 07:05:51,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47225 to 47225. [2021-11-04 07:05:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47225 states, 47054 states have (on average 1.422918349130786) internal successors, (66954), 47224 states have internal predecessors, (66954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:05:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47225 states to 47225 states and 66954 transitions. [2021-11-04 07:05:51,375 INFO L78 Accepts]: Start accepts. Automaton has 47225 states and 66954 transitions. Word has length 93 [2021-11-04 07:05:51,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:05:51,375 INFO L470 AbstractCegarLoop]: Abstraction has 47225 states and 66954 transitions. [2021-11-04 07:05:51,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:05:51,376 INFO L276 IsEmpty]: Start isEmpty. Operand 47225 states and 66954 transitions. [2021-11-04 07:05:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-04 07:05:51,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:05:51,379 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-04 07:05:51,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-04 07:05:51,607 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,SelfDestructingSolverStorable15 [2021-11-04 07:05:51,608 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr138ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 07:05:51,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:05:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash 968522054, now seen corresponding path program 2 times [2021-11-04 07:05:51,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:05:51,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729004139] [2021-11-04 07:05:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:05:51,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:05:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:05:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-04 07:05:52,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:05:52,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729004139] [2021-11-04 07:05:52,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729004139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:05:52,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:05:52,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 07:05:52,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629719192] [2021-11-04 07:05:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:05:52,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 07:05:52,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:05:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 07:05:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 07:05:52,162 INFO L87 Difference]: Start difference. First operand 47225 states and 66954 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:05:53,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:05:55,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:05:56,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:06:11,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:06:15,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:06:20,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:06:22,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:06:25,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:06:29,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:06:41,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:07:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:07:02,589 INFO L93 Difference]: Finished difference Result 89991 states and 127234 transitions. [2021-11-04 07:07:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 07:07:02,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 102 [2021-11-04 07:07:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:07:02,706 INFO L225 Difference]: With dead ends: 89991 [2021-11-04 07:07:02,706 INFO L226 Difference]: Without dead ends: 59033 [2021-11-04 07:07:02,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.93ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 07:07:02,742 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6996 mSDsluCounter, 7034 mSDsCounter, 0 mSdLazyCounter, 11838 mSolverCounterSat, 32 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64957.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6996 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.20ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 11838 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68446.82ms IncrementalHoareTripleChecker+Time [2021-11-04 07:07:02,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6996 Valid, 0 Invalid, 11873 Unknown, 0 Unchecked, 70.20ms Time], IncrementalHoareTripleChecker [32 Valid, 11838 Invalid, 3 Unknown, 0 Unchecked, 68446.82ms Time] [2021-11-04 07:07:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59033 states. [2021-11-04 07:07:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59033 to 36263. [2021-11-04 07:07:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36263 states, 36092 states have (on average 1.4128338690014408) internal successors, (50992), 36262 states have internal predecessors, (50992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:07:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36263 states to 36263 states and 50992 transitions. [2021-11-04 07:07:04,086 INFO L78 Accepts]: Start accepts. Automaton has 36263 states and 50992 transitions. Word has length 102 [2021-11-04 07:07:04,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:07:04,087 INFO L470 AbstractCegarLoop]: Abstraction has 36263 states and 50992 transitions. [2021-11-04 07:07:04,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:07:04,087 INFO L276 IsEmpty]: Start isEmpty. Operand 36263 states and 50992 transitions. [2021-11-04 07:07:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-04 07:07:04,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:07:04,115 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2021-11-04 07:07:04,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-04 07:07:04,116 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr115ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 180 more)] === [2021-11-04 07:07:04,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:07:04,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1081235536, now seen corresponding path program 1 times [2021-11-04 07:07:04,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:07:04,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891718913] [2021-11-04 07:07:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:07:04,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:07:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:07:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-04 07:07:04,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:07:04,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891718913] [2021-11-04 07:07:04,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891718913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:07:04,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:07:04,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:07:04,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76170414] [2021-11-04 07:07:04,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:07:04,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:07:04,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:07:04,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:07:04,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:07:04,775 INFO L87 Difference]: Start difference. First operand 36263 states and 50992 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) Killed by 15