./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--input--mousedev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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--input--mousedev.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 d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 18:20:21,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 18:20:21,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 18:20:21,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 18:20:21,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 18:20:21,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 18:20:21,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 18:20:21,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 18:20:21,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 18:20:21,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 18:20:21,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 18:20:21,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 18:20:21,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 18:20:21,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 18:20:21,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 18:20:21,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 18:20:21,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 18:20:21,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 18:20:21,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 18:20:21,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 18:20:21,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 18:20:21,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 18:20:21,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 18:20:21,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 18:20:21,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 18:20:21,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 18:20:21,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 18:20:21,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 18:20:21,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 18:20:21,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 18:20:21,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 18:20:21,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 18:20:21,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 18:20:21,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 18:20:21,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 18:20:21,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 18:20:21,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 18:20:21,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 18:20:21,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 18:20:21,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 18:20:21,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 18:20:21,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 18:20:21,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 18:20:21,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 18:20:21,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 18:20:21,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 18:20:21,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 18:20:21,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 18:20:21,317 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 18:20:21,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 18:20:21,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 18:20:21,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 18:20:21,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 18:20:21,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 18:20:21,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 18:20:21,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 18:20:21,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 18:20:21,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 18:20:21,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 18:20:21,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 18:20:21,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 18:20:21,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:20:21,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 18:20:21,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 18:20:21,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 18:20:21,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 18:20:21,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 18:20:21,321 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 18:20:21,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 18:20:21,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 18:20:21,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 18:20:21,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2021-11-05 18:20:21,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 18:20:21,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 18:20:21,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 18:20:21,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 18:20:21,611 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 18:20:21,612 INFO L432 ainManager$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--input--mousedev.ko-entry_point.cil.out.i [2021-11-05 18:20:21,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05d2fb6b/dcf4d38aea174c39a771dba000b35f46/FLAG56680c9b5 [2021-11-05 18:20:22,221 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 18:20:22,222 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--input--mousedev.ko-entry_point.cil.out.i [2021-11-05 18:20:22,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05d2fb6b/dcf4d38aea174c39a771dba000b35f46/FLAG56680c9b5 [2021-11-05 18:20:22,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05d2fb6b/dcf4d38aea174c39a771dba000b35f46 [2021-11-05 18:20:22,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 18:20:22,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 18:20:22,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 18:20:22,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 18:20:22,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 18:20:22,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:20:22" (1/1) ... [2021-11-05 18:20:22,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fdcd389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:22, skipping insertion in model container [2021-11-05 18:20:22,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:20:22" (1/1) ... [2021-11-05 18:20:22,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 18:20:22,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 18:20:23,649 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--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-05 18:20:23,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:20:23,772 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 18:20:24,029 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--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-05 18:20:24,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:20:24,129 INFO L208 MainTranslator]: Completed translation [2021-11-05 18:20:24,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24 WrapperNode [2021-11-05 18:20:24,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 18:20:24,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 18:20:24,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 18:20:24,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 18:20:24,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 18:20:24,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 18:20:24,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 18:20:24,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 18:20:24,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 18:20:24,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 18:20:24,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 18:20:24,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 18:20:24,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (1/1) ... [2021-11-05 18:20:24,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:20:25,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:20:25,015 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) [2021-11-05 18:20:25,059 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 [2021-11-05 18:20:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 18:20:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 18:20:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 18:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 18:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 18:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 18:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 18:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 18:20:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 18:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 18:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 18:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 18:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 18:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 18:20:25,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 18:20:25,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 18:20:34,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 18:20:34,528 INFO L299 CfgBuilder]: Removed 2088 assume(true) statements. [2021-11-05 18:20:34,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:20:34 BoogieIcfgContainer [2021-11-05 18:20:34,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 18:20:34,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 18:20:34,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 18:20:34,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 18:20:34,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 06:20:22" (1/3) ... [2021-11-05 18:20:34,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d31d100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:20:34, skipping insertion in model container [2021-11-05 18:20:34,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:20:24" (2/3) ... [2021-11-05 18:20:34,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d31d100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:20:34, skipping insertion in model container [2021-11-05 18:20:34,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:20:34" (3/3) ... [2021-11-05 18:20:34,538 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-05 18:20:34,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 18:20:34,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2021-11-05 18:20:34,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 18:20:34,586 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 [2021-11-05 18:20:34,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-11-05 18:20:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:34,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 18:20:34,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:34,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:34,634 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash -571058910, now seen corresponding path program 1 times [2021-11-05 18:20:34,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:34,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130052032] [2021-11-05 18:20:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:34,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:34,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:34,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130052032] [2021-11-05 18:20:34,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130052032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:34,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:34,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:20:34,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647388442] [2021-11-05 18:20:34,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:35,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 18:20:35,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:35,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 18:20:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:20:35,033 INFO L87 Difference]: Start difference. First operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 0 states have call successors, (0), 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 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:35,123 INFO L93 Difference]: Finished difference Result 5234 states and 7875 transitions. [2021-11-05 18:20:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 18:20:35,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-05 18:20:35,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:35,144 INFO L225 Difference]: With dead ends: 5234 [2021-11-05 18:20:35,145 INFO L226 Difference]: Without dead ends: 2611 [2021-11-05 18:20:35,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:20:35,154 INFO L933 BasicCegarLoop]: 3871 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:35,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 8.03ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 18:20:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-11-05 18:20:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2021-11-05 18:20:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2569 states have (on average 1.5021409108602568) internal successors, (3859), 2610 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3859 transitions. [2021-11-05 18:20:35,321 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3859 transitions. Word has length 71 [2021-11-05 18:20:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:35,321 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3859 transitions. [2021-11-05 18:20:35,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3859 transitions. [2021-11-05 18:20:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 18:20:35,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:35,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:35,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 18:20:35,329 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:35,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1311868076, now seen corresponding path program 1 times [2021-11-05 18:20:35,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:35,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914325968] [2021-11-05 18:20:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:35,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:35,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:35,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914325968] [2021-11-05 18:20:35,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914325968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:35,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:35,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:20:35,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285109960] [2021-11-05 18:20:35,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:35,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:35,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:35,552 INFO L87 Difference]: Start difference. First operand 2611 states and 3859 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:35,765 INFO L93 Difference]: Finished difference Result 5832 states and 8527 transitions. [2021-11-05 18:20:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:35,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-05 18:20:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:35,778 INFO L225 Difference]: With dead ends: 5832 [2021-11-05 18:20:35,778 INFO L226 Difference]: Without dead ends: 3283 [2021-11-05 18:20:35,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:35,784 INFO L933 BasicCegarLoop]: 3858 mSDtfsCounter, 945 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 7622 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.44ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.61ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:35,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 7622 Invalid, 26 Unknown, 0 Unchecked, 11.44ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 107.61ms Time] [2021-11-05 18:20:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-11-05 18:20:35,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 3195. [2021-11-05 18:20:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3153 states have (on average 1.4808119251506502) internal successors, (4669), 3194 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4669 transitions. [2021-11-05 18:20:35,859 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4669 transitions. Word has length 71 [2021-11-05 18:20:35,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:35,860 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 4669 transitions. [2021-11-05 18:20:35,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4669 transitions. [2021-11-05 18:20:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 18:20:35,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:35,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:35,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 18:20:35,862 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:35,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:35,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2119557104, now seen corresponding path program 1 times [2021-11-05 18:20:35,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:35,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691420962] [2021-11-05 18:20:35,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:35,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:36,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:36,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691420962] [2021-11-05 18:20:36,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691420962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:36,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:36,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:20:36,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430228099] [2021-11-05 18:20:36,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:36,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:36,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:36,037 INFO L87 Difference]: Start difference. First operand 3195 states and 4669 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:38,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:20:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:38,218 INFO L93 Difference]: Finished difference Result 9134 states and 13478 transitions. [2021-11-05 18:20:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-05 18:20:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:38,239 INFO L225 Difference]: With dead ends: 9134 [2021-11-05 18:20:38,239 INFO L226 Difference]: Without dead ends: 6001 [2021-11-05 18:20:38,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:38,247 INFO L933 BasicCegarLoop]: 6761 mSDtfsCounter, 3727 mSDsluCounter, 3680 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2036.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3727 SdHoareTripleChecker+Valid, 10441 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.78ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2062.25ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:38,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3727 Valid, 10441 Invalid, 15 Unknown, 0 Unchecked, 10.78ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2062.25ms Time] [2021-11-05 18:20:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2021-11-05 18:20:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5937. [2021-11-05 18:20:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5937 states, 5895 states have (on average 1.4999151823579304) internal successors, (8842), 5936 states have internal predecessors, (8842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5937 states to 5937 states and 8842 transitions. [2021-11-05 18:20:38,392 INFO L78 Accepts]: Start accepts. Automaton has 5937 states and 8842 transitions. Word has length 74 [2021-11-05 18:20:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:38,393 INFO L470 AbstractCegarLoop]: Abstraction has 5937 states and 8842 transitions. [2021-11-05 18:20:38,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5937 states and 8842 transitions. [2021-11-05 18:20:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 18:20:38,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:38,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:38,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 18:20:38,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:38,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:38,399 INFO L85 PathProgramCache]: Analyzing trace with hash 472182075, now seen corresponding path program 1 times [2021-11-05 18:20:38,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:38,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301390356] [2021-11-05 18:20:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:38,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:38,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:38,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301390356] [2021-11-05 18:20:38,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301390356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:38,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:38,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:20:38,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74473180] [2021-11-05 18:20:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:38,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:38,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:38,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:38,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:38,543 INFO L87 Difference]: Start difference. First operand 5937 states and 8842 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:38,821 INFO L93 Difference]: Finished difference Result 15721 states and 23656 transitions. [2021-11-05 18:20:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:38,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-05 18:20:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:38,857 INFO L225 Difference]: With dead ends: 15721 [2021-11-05 18:20:38,857 INFO L226 Difference]: Without dead ends: 9846 [2021-11-05 18:20:38,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:38,869 INFO L933 BasicCegarLoop]: 3864 mSDtfsCounter, 3131 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3131 SdHoareTripleChecker+Valid, 7558 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.46ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.46ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:38,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3131 Valid, 7558 Invalid, 51 Unknown, 0 Unchecked, 7.46ms Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 83.46ms Time] [2021-11-05 18:20:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9846 states. [2021-11-05 18:20:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9846 to 9618. [2021-11-05 18:20:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9618 states, 9576 states have (on average 1.5279866332497911) internal successors, (14632), 9617 states have internal predecessors, (14632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9618 states to 9618 states and 14632 transitions. [2021-11-05 18:20:39,113 INFO L78 Accepts]: Start accepts. Automaton has 9618 states and 14632 transitions. Word has length 78 [2021-11-05 18:20:39,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:39,113 INFO L470 AbstractCegarLoop]: Abstraction has 9618 states and 14632 transitions. [2021-11-05 18:20:39,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:39,114 INFO L276 IsEmpty]: Start isEmpty. Operand 9618 states and 14632 transitions. [2021-11-05 18:20:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 18:20:39,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:39,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:39,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 18:20:39,116 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash -658626127, now seen corresponding path program 1 times [2021-11-05 18:20:39,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:39,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487975642] [2021-11-05 18:20:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:39,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:39,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:39,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487975642] [2021-11-05 18:20:39,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487975642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:39,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:39,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:20:39,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246657767] [2021-11-05 18:20:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:39,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:39,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:39,237 INFO L87 Difference]: Start difference. First operand 9618 states and 14632 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:39,586 INFO L93 Difference]: Finished difference Result 28033 states and 42946 transitions. [2021-11-05 18:20:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-05 18:20:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:39,641 INFO L225 Difference]: With dead ends: 28033 [2021-11-05 18:20:39,642 INFO L226 Difference]: Without dead ends: 18476 [2021-11-05 18:20:39,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:39,663 INFO L933 BasicCegarLoop]: 3956 mSDtfsCounter, 3595 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 7469 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.57ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.87ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:39,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3595 Valid, 7469 Invalid, 161 Unknown, 0 Unchecked, 8.57ms Time], IncrementalHoareTripleChecker [61 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 120.87ms Time] [2021-11-05 18:20:39,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18476 states. [2021-11-05 18:20:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18476 to 18206. [2021-11-05 18:20:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18206 states, 18166 states have (on average 1.539084003082682) internal successors, (27959), 18205 states have internal predecessors, (27959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:40,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18206 states to 18206 states and 27959 transitions. [2021-11-05 18:20:40,111 INFO L78 Accepts]: Start accepts. Automaton has 18206 states and 27959 transitions. Word has length 87 [2021-11-05 18:20:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:40,112 INFO L470 AbstractCegarLoop]: Abstraction has 18206 states and 27959 transitions. [2021-11-05 18:20:40,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 18206 states and 27959 transitions. [2021-11-05 18:20:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-05 18:20:40,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:40,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:40,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 18:20:40,122 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash -268580366, now seen corresponding path program 1 times [2021-11-05 18:20:40,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:40,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659714383] [2021-11-05 18:20:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:40,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:40,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:40,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659714383] [2021-11-05 18:20:40,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659714383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:40,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:40,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:20:40,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922661896] [2021-11-05 18:20:40,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:40,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:40,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:40,249 INFO L87 Difference]: Start difference. First operand 18206 states and 27959 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 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) [2021-11-05 18:20:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:40,476 INFO L93 Difference]: Finished difference Result 18206 states and 27959 transitions. [2021-11-05 18:20:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:40,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 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 [2021-11-05 18:20:40,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:40,511 INFO L225 Difference]: With dead ends: 18206 [2021-11-05 18:20:40,512 INFO L226 Difference]: Without dead ends: 18204 [2021-11-05 18:20:40,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:40,518 INFO L933 BasicCegarLoop]: 3852 mSDtfsCounter, 3766 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3766 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.02ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:40,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3766 Valid, 3852 Invalid, 1 Unknown, 0 Unchecked, 5.15ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.02ms Time] [2021-11-05 18:20:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2021-11-05 18:20:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 18204. [2021-11-05 18:20:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18204 states, 18165 states have (on average 1.5390035783099367) internal successors, (27956), 18203 states have internal predecessors, (27956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18204 states to 18204 states and 27956 transitions. [2021-11-05 18:20:40,838 INFO L78 Accepts]: Start accepts. Automaton has 18204 states and 27956 transitions. Word has length 89 [2021-11-05 18:20:40,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:40,839 INFO L470 AbstractCegarLoop]: Abstraction has 18204 states and 27956 transitions. [2021-11-05 18:20:40,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 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) [2021-11-05 18:20:40,839 INFO L276 IsEmpty]: Start isEmpty. Operand 18204 states and 27956 transitions. [2021-11-05 18:20:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 18:20:40,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:40,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:40,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 18:20:40,840 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:40,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:40,841 INFO L85 PathProgramCache]: Analyzing trace with hash 263959193, now seen corresponding path program 1 times [2021-11-05 18:20:40,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:40,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351052632] [2021-11-05 18:20:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:40,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:40,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:40,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351052632] [2021-11-05 18:20:40,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351052632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:40,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:40,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:20:40,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881612727] [2021-11-05 18:20:40,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:40,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:40,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:40,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:40,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:40,950 INFO L87 Difference]: Start difference. First operand 18204 states and 27956 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 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) [2021-11-05 18:20:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:41,211 INFO L93 Difference]: Finished difference Result 18204 states and 27956 transitions. [2021-11-05 18:20:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:41,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 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 90 [2021-11-05 18:20:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:41,249 INFO L225 Difference]: With dead ends: 18204 [2021-11-05 18:20:41,249 INFO L226 Difference]: Without dead ends: 18202 [2021-11-05 18:20:41,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:41,259 INFO L933 BasicCegarLoop]: 3850 mSDtfsCounter, 3763 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3763 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.05ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:41,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3763 Valid, 3850 Invalid, 1 Unknown, 0 Unchecked, 5.76ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.05ms Time] [2021-11-05 18:20:41,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18202 states. [2021-11-05 18:20:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18202 to 18202. [2021-11-05 18:20:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18202 states, 18164 states have (on average 1.5389231446817881) internal successors, (27953), 18201 states have internal predecessors, (27953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18202 states to 18202 states and 27953 transitions. [2021-11-05 18:20:41,641 INFO L78 Accepts]: Start accepts. Automaton has 18202 states and 27953 transitions. Word has length 90 [2021-11-05 18:20:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:41,641 INFO L470 AbstractCegarLoop]: Abstraction has 18202 states and 27953 transitions. [2021-11-05 18:20:41,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 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) [2021-11-05 18:20:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 18202 states and 27953 transitions. [2021-11-05 18:20:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 18:20:41,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:41,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:41,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 18:20:41,643 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:41,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:41,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1363288266, now seen corresponding path program 1 times [2021-11-05 18:20:41,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:41,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819495105] [2021-11-05 18:20:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:41,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:41,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:41,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819495105] [2021-11-05 18:20:41,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819495105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:41,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:41,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:20:41,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770274490] [2021-11-05 18:20:41,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:41,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:41,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:41,734 INFO L87 Difference]: Start difference. First operand 18202 states and 27953 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:43,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:20:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:44,210 INFO L93 Difference]: Finished difference Result 36274 states and 55769 transitions. [2021-11-05 18:20:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:44,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-05 18:20:44,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:44,250 INFO L225 Difference]: With dead ends: 36274 [2021-11-05 18:20:44,250 INFO L226 Difference]: Without dead ends: 18134 [2021-11-05 18:20:44,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:44,276 INFO L933 BasicCegarLoop]: 7064 mSDtfsCounter, 3501 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2089.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 10698 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.67ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2134.16ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:44,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 10698 Invalid, 119 Unknown, 0 Unchecked, 9.67ms Time], IncrementalHoareTripleChecker [47 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 2134.16ms Time] [2021-11-05 18:20:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18134 states. [2021-11-05 18:20:44,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18134 to 18060. [2021-11-05 18:20:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18060 states, 18036 states have (on average 1.5367043690396984) internal successors, (27716), 18059 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18060 states to 18060 states and 27716 transitions. [2021-11-05 18:20:44,575 INFO L78 Accepts]: Start accepts. Automaton has 18060 states and 27716 transitions. Word has length 91 [2021-11-05 18:20:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:44,575 INFO L470 AbstractCegarLoop]: Abstraction has 18060 states and 27716 transitions. [2021-11-05 18:20:44,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 18060 states and 27716 transitions. [2021-11-05 18:20:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 18:20:44,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:44,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:44,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 18:20:44,578 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:44,579 INFO L85 PathProgramCache]: Analyzing trace with hash -407183652, now seen corresponding path program 1 times [2021-11-05 18:20:44,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:44,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074848278] [2021-11-05 18:20:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:44,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:44,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:44,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074848278] [2021-11-05 18:20:44,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074848278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:44,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:44,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:20:44,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102238730] [2021-11-05 18:20:44,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:44,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:44,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:44,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:44,699 INFO L87 Difference]: Start difference. First operand 18060 states and 27716 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:44,861 INFO L93 Difference]: Finished difference Result 18060 states and 27716 transitions. [2021-11-05 18:20:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:44,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-05 18:20:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:44,898 INFO L225 Difference]: With dead ends: 18060 [2021-11-05 18:20:44,898 INFO L226 Difference]: Without dead ends: 18027 [2021-11-05 18:20:44,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:44,906 INFO L933 BasicCegarLoop]: 3784 mSDtfsCounter, 3696 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3696 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.04ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:44,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3696 Valid, 3784 Invalid, 1 Unknown, 0 Unchecked, 4.53ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.04ms Time] [2021-11-05 18:20:44,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18027 states. [2021-11-05 18:20:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18027 to 18027. [2021-11-05 18:20:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18027 states, 18004 states have (on average 1.536825149966674) internal successors, (27669), 18026 states have internal predecessors, (27669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18027 states to 18027 states and 27669 transitions. [2021-11-05 18:20:45,306 INFO L78 Accepts]: Start accepts. Automaton has 18027 states and 27669 transitions. Word has length 91 [2021-11-05 18:20:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:45,306 INFO L470 AbstractCegarLoop]: Abstraction has 18027 states and 27669 transitions. [2021-11-05 18:20:45,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 18027 states and 27669 transitions. [2021-11-05 18:20:45,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-05 18:20:45,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:45,308 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:45,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 18:20:45,308 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:45,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1882604641, now seen corresponding path program 1 times [2021-11-05 18:20:45,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:45,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144747050] [2021-11-05 18:20:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:45,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:45,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:45,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144747050] [2021-11-05 18:20:45,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144747050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:45,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:45,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:20:45,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120755786] [2021-11-05 18:20:45,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:45,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:45,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:45,398 INFO L87 Difference]: Start difference. First operand 18027 states and 27669 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:47,413 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 [] [2021-11-05 18:20:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:47,757 INFO L93 Difference]: Finished difference Result 38106 states and 58231 transitions. [2021-11-05 18:20:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:47,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-05 18:20:47,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:47,801 INFO L225 Difference]: With dead ends: 38106 [2021-11-05 18:20:47,802 INFO L226 Difference]: Without dead ends: 20141 [2021-11-05 18:20:47,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:47,828 INFO L933 BasicCegarLoop]: 4553 mSDtfsCounter, 1679 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2050.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 7419 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.38ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2084.90ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:47,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 7419 Invalid, 40 Unknown, 0 Unchecked, 6.38ms Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2084.90ms Time] [2021-11-05 18:20:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20141 states. [2021-11-05 18:20:48,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20141 to 20063. [2021-11-05 18:20:48,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20063 states, 20040 states have (on average 1.521806387225549) internal successors, (30497), 20062 states have internal predecessors, (30497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20063 states to 20063 states and 30497 transitions. [2021-11-05 18:20:48,239 INFO L78 Accepts]: Start accepts. Automaton has 20063 states and 30497 transitions. Word has length 105 [2021-11-05 18:20:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:48,239 INFO L470 AbstractCegarLoop]: Abstraction has 20063 states and 30497 transitions. [2021-11-05 18:20:48,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 20063 states and 30497 transitions. [2021-11-05 18:20:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 18:20:48,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:48,241 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:48,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 18:20:48,242 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:48,242 INFO L85 PathProgramCache]: Analyzing trace with hash -57225292, now seen corresponding path program 1 times [2021-11-05 18:20:48,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:48,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077368228] [2021-11-05 18:20:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:48,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 18:20:48,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:48,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077368228] [2021-11-05 18:20:48,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077368228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:48,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:48,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:20:48,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205109482] [2021-11-05 18:20:48,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:48,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:48,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:48,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:48,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:48,330 INFO L87 Difference]: Start difference. First operand 20063 states and 30497 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:50,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:20:50,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:50,821 INFO L93 Difference]: Finished difference Result 42178 states and 63887 transitions. [2021-11-05 18:20:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:50,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 115 [2021-11-05 18:20:50,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:50,862 INFO L225 Difference]: With dead ends: 42178 [2021-11-05 18:20:50,863 INFO L226 Difference]: Without dead ends: 22177 [2021-11-05 18:20:50,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:50,884 INFO L933 BasicCegarLoop]: 4570 mSDtfsCounter, 1892 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2054.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 7228 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.62ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2100.31ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:50,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 7228 Invalid, 41 Unknown, 0 Unchecked, 5.62ms Time], IncrementalHoareTripleChecker [12 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2100.31ms Time] [2021-11-05 18:20:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22177 states. [2021-11-05 18:20:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22177 to 22099. [2021-11-05 18:20:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22099 states, 22076 states have (on average 1.5095578909222684) internal successors, (33325), 22098 states have internal predecessors, (33325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22099 states to 22099 states and 33325 transitions. [2021-11-05 18:20:51,354 INFO L78 Accepts]: Start accepts. Automaton has 22099 states and 33325 transitions. Word has length 115 [2021-11-05 18:20:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:51,354 INFO L470 AbstractCegarLoop]: Abstraction has 22099 states and 33325 transitions. [2021-11-05 18:20:51,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 22099 states and 33325 transitions. [2021-11-05 18:20:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-05 18:20:51,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:51,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:51,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 18:20:51,358 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1050209459, now seen corresponding path program 1 times [2021-11-05 18:20:51,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:51,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302214349] [2021-11-05 18:20:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:51,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:51,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:51,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302214349] [2021-11-05 18:20:51,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302214349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:51,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:51,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:20:51,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991627473] [2021-11-05 18:20:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:51,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:20:51,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:20:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:20:51,465 INFO L87 Difference]: Start difference. First operand 22099 states and 33325 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:52,083 INFO L93 Difference]: Finished difference Result 54505 states and 82421 transitions. [2021-11-05 18:20:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 18:20:52,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-05 18:20:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:52,137 INFO L225 Difference]: With dead ends: 54505 [2021-11-05 18:20:52,137 INFO L226 Difference]: Without dead ends: 32468 [2021-11-05 18:20:52,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:20:52,160 INFO L933 BasicCegarLoop]: 6677 mSDtfsCounter, 7867 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7867 SdHoareTripleChecker+Valid, 10437 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.03ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.37ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:52,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7867 Valid, 10437 Invalid, 18 Unknown, 0 Unchecked, 16.03ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 36.37ms Time] [2021-11-05 18:20:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32468 states. [2021-11-05 18:20:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32468 to 22019. [2021-11-05 18:20:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22019 states, 21996 states have (on average 1.510911074740862) internal successors, (33234), 22018 states have internal predecessors, (33234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22019 states to 22019 states and 33234 transitions. [2021-11-05 18:20:52,627 INFO L78 Accepts]: Start accepts. Automaton has 22019 states and 33234 transitions. Word has length 121 [2021-11-05 18:20:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:52,627 INFO L470 AbstractCegarLoop]: Abstraction has 22019 states and 33234 transitions. [2021-11-05 18:20:52,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 22019 states and 33234 transitions. [2021-11-05 18:20:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 18:20:52,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:52,630 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:52,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 18:20:52,631 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash -247642266, now seen corresponding path program 1 times [2021-11-05 18:20:52,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:52,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513225203] [2021-11-05 18:20:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:52,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:20:52,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:52,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513225203] [2021-11-05 18:20:52,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513225203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:52,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:52,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:20:52,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173980123] [2021-11-05 18:20:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:52,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:52,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:52,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:52,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:52,739 INFO L87 Difference]: Start difference. First operand 22019 states and 33234 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:54,755 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 [] [2021-11-05 18:20:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:55,409 INFO L93 Difference]: Finished difference Result 52287 states and 79333 transitions. [2021-11-05 18:20:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:55,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-05 18:20:55,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:55,463 INFO L225 Difference]: With dead ends: 52287 [2021-11-05 18:20:55,463 INFO L226 Difference]: Without dead ends: 30330 [2021-11-05 18:20:55,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:55,492 INFO L933 BasicCegarLoop]: 6718 mSDtfsCounter, 3280 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2076.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 10121 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.99ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2121.80ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:55,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3280 Valid, 10121 Invalid, 68 Unknown, 0 Unchecked, 7.99ms Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 2121.80ms Time] [2021-11-05 18:20:55,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30330 states. [2021-11-05 18:20:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30330 to 30067. [2021-11-05 18:20:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30067 states, 30044 states have (on average 1.521634935428039) internal successors, (45716), 30066 states have internal predecessors, (45716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30067 states to 30067 states and 45716 transitions. [2021-11-05 18:20:56,052 INFO L78 Accepts]: Start accepts. Automaton has 30067 states and 45716 transitions. Word has length 125 [2021-11-05 18:20:56,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:56,053 INFO L470 AbstractCegarLoop]: Abstraction has 30067 states and 45716 transitions. [2021-11-05 18:20:56,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:56,053 INFO L276 IsEmpty]: Start isEmpty. Operand 30067 states and 45716 transitions. [2021-11-05 18:20:56,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 18:20:56,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:56,057 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:56,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 18:20:56,057 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:56,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:56,058 INFO L85 PathProgramCache]: Analyzing trace with hash 89053511, now seen corresponding path program 1 times [2021-11-05 18:20:56,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:56,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655495841] [2021-11-05 18:20:56,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:56,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 18:20:56,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:56,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655495841] [2021-11-05 18:20:56,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655495841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:56,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:56,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:20:56,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646035531] [2021-11-05 18:20:56,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:56,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:56,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:56,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:56,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:56,224 INFO L87 Difference]: Start difference. First operand 30067 states and 45716 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:57,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:57,122 INFO L93 Difference]: Finished difference Result 81844 states and 125240 transitions. [2021-11-05 18:20:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:57,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 131 [2021-11-05 18:20:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:57,230 INFO L225 Difference]: With dead ends: 81844 [2021-11-05 18:20:57,231 INFO L226 Difference]: Without dead ends: 51839 [2021-11-05 18:20:57,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:57,274 INFO L933 BasicCegarLoop]: 4700 mSDtfsCounter, 3470 mSDsluCounter, 3580 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3470 SdHoareTripleChecker+Valid, 8280 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.98ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:57,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3470 Valid, 8280 Invalid, 4 Unknown, 0 Unchecked, 8.22ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 5.98ms Time] [2021-11-05 18:20:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51839 states. [2021-11-05 18:20:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51839 to 30019. [2021-11-05 18:20:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30019 states, 29996 states have (on average 1.5208694492599013) internal successors, (45620), 30018 states have internal predecessors, (45620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30019 states to 30019 states and 45620 transitions. [2021-11-05 18:20:58,288 INFO L78 Accepts]: Start accepts. Automaton has 30019 states and 45620 transitions. Word has length 131 [2021-11-05 18:20:58,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:20:58,288 INFO L470 AbstractCegarLoop]: Abstraction has 30019 states and 45620 transitions. [2021-11-05 18:20:58,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 30019 states and 45620 transitions. [2021-11-05 18:20:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 18:20:58,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:20:58,293 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:20:58,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 18:20:58,293 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:20:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:20:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1239398831, now seen corresponding path program 1 times [2021-11-05 18:20:58,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:20:58,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230007281] [2021-11-05 18:20:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:20:58,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:20:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:20:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-05 18:20:58,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:20:58,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230007281] [2021-11-05 18:20:58,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230007281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:20:58,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:20:58,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:20:58,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659493828] [2021-11-05 18:20:58,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:20:58,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:20:58,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:20:58,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:20:58,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:58,494 INFO L87 Difference]: Start difference. First operand 30019 states and 45620 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:20:59,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:20:59,398 INFO L93 Difference]: Finished difference Result 60008 states and 91215 transitions. [2021-11-05 18:20:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:20:59,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 131 [2021-11-05 18:20:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:20:59,449 INFO L225 Difference]: With dead ends: 60008 [2021-11-05 18:20:59,450 INFO L226 Difference]: Without dead ends: 30025 [2021-11-05 18:20:59,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:20:59,490 INFO L933 BasicCegarLoop]: 3750 mSDtfsCounter, 0 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7443 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.55ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.22ms IncrementalHoareTripleChecker+Time [2021-11-05 18:20:59,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7443 Invalid, 73 Unknown, 0 Unchecked, 8.55ms Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 121.22ms Time] [2021-11-05 18:20:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30025 states. [2021-11-05 18:21:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30025 to 30025. [2021-11-05 18:21:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30025 states, 30002 states have (on average 1.5207652823145124) internal successors, (45626), 30024 states have internal predecessors, (45626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30025 states to 30025 states and 45626 transitions. [2021-11-05 18:21:00,266 INFO L78 Accepts]: Start accepts. Automaton has 30025 states and 45626 transitions. Word has length 131 [2021-11-05 18:21:00,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:21:00,266 INFO L470 AbstractCegarLoop]: Abstraction has 30025 states and 45626 transitions. [2021-11-05 18:21:00,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 30025 states and 45626 transitions. [2021-11-05 18:21:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 18:21:00,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:21:00,270 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:21:00,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 18:21:00,271 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:21:00,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:21:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1002892015, now seen corresponding path program 1 times [2021-11-05 18:21:00,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:21:00,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745083870] [2021-11-05 18:21:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:21:00,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:21:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:21:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 18:21:00,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:21:00,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745083870] [2021-11-05 18:21:00,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745083870] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:21:00,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15105380] [2021-11-05 18:21:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:21:00,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:21:00,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:21:00,443 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) [2021-11-05 18:21:00,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 18:21:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:21:02,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-05 18:21:02,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:21:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 18:21:02,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 18:21:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 18:21:02,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15105380] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-05 18:21:02,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-05 18:21:02,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2021-11-05 18:21:02,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891096078] [2021-11-05 18:21:02,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:21:02,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:21:02,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:21:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:21:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 18:21:02,581 INFO L87 Difference]: Start difference. First operand 30025 states and 45626 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:21:03,372 INFO L93 Difference]: Finished difference Result 60149 states and 91494 transitions. [2021-11-05 18:21:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:21:03,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 137 [2021-11-05 18:21:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:21:03,420 INFO L225 Difference]: With dead ends: 60149 [2021-11-05 18:21:03,420 INFO L226 Difference]: Without dead ends: 30172 [2021-11-05 18:21:03,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.74ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 18:21:03,443 INFO L933 BasicCegarLoop]: 3735 mSDtfsCounter, 0 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7428 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.85ms IncrementalHoareTripleChecker+Time [2021-11-05 18:21:03,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7428 Invalid, 97 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [34 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 110.85ms Time] [2021-11-05 18:21:03,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30172 states. [2021-11-05 18:21:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30172 to 30172. [2021-11-05 18:21:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30172 states, 30149 states have (on average 1.518226143487346) internal successors, (45773), 30171 states have internal predecessors, (45773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:04,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30172 states to 30172 states and 45773 transitions. [2021-11-05 18:21:04,236 INFO L78 Accepts]: Start accepts. Automaton has 30172 states and 45773 transitions. Word has length 137 [2021-11-05 18:21:04,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:21:04,236 INFO L470 AbstractCegarLoop]: Abstraction has 30172 states and 45773 transitions. [2021-11-05 18:21:04,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:04,236 INFO L276 IsEmpty]: Start isEmpty. Operand 30172 states and 45773 transitions. [2021-11-05 18:21:04,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 18:21:04,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:21:04,241 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:21:04,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 18:21:04,451 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,SelfDestructingSolverStorable15 [2021-11-05 18:21:04,451 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:21:04,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:21:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash -343030441, now seen corresponding path program 1 times [2021-11-05 18:21:04,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:21:04,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618851620] [2021-11-05 18:21:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:21:04,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:21:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:21:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-05 18:21:04,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:21:04,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618851620] [2021-11-05 18:21:04,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618851620] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:21:04,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111045964] [2021-11-05 18:21:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:21:04,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:21:04,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:21:04,646 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) [2021-11-05 18:21:04,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 18:21:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:21:10,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2244 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-05 18:21:10,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:21:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-05 18:21:10,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 18:21:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-05 18:21:10,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111045964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 18:21:10,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 18:21:10,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 18:21:10,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237737579] [2021-11-05 18:21:10,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 18:21:10,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 18:21:10,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:21:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 18:21:10,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:21:10,490 INFO L87 Difference]: Start difference. First operand 30172 states and 45773 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:21:11,599 INFO L93 Difference]: Finished difference Result 60472 states and 91838 transitions. [2021-11-05 18:21:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 18:21:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-05 18:21:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:21:11,652 INFO L225 Difference]: With dead ends: 60472 [2021-11-05 18:21:11,652 INFO L226 Difference]: Without dead ends: 30337 [2021-11-05 18:21:11,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 52.95ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:21:11,687 INFO L933 BasicCegarLoop]: 3735 mSDtfsCounter, 3659 mSDsluCounter, 7420 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 246.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3659 SdHoareTripleChecker+Valid, 11155 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.39ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 315.28ms IncrementalHoareTripleChecker+Time [2021-11-05 18:21:11,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3659 Valid, 11155 Invalid, 293 Unknown, 0 Unchecked, 10.39ms Time], IncrementalHoareTripleChecker [134 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 315.28ms Time] [2021-11-05 18:21:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30337 states. [2021-11-05 18:21:12,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30337 to 30337. [2021-11-05 18:21:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30337 states, 30314 states have (on average 1.5154054232367882) internal successors, (45938), 30336 states have internal predecessors, (45938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30337 states to 30337 states and 45938 transitions. [2021-11-05 18:21:12,476 INFO L78 Accepts]: Start accepts. Automaton has 30337 states and 45938 transitions. Word has length 140 [2021-11-05 18:21:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:21:12,476 INFO L470 AbstractCegarLoop]: Abstraction has 30337 states and 45938 transitions. [2021-11-05 18:21:12,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 30337 states and 45938 transitions. [2021-11-05 18:21:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-05 18:21:12,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:21:12,481 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:21:12,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 18:21:12,707 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,SelfDestructingSolverStorable16 [2021-11-05 18:21:12,707 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:21:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:21:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash 786446609, now seen corresponding path program 2 times [2021-11-05 18:21:12,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:21:12,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185432681] [2021-11-05 18:21:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:21:12,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:21:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:21:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-05 18:21:13,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:21:13,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185432681] [2021-11-05 18:21:13,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185432681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:21:13,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004515476] [2021-11-05 18:21:13,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 18:21:13,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:21:13,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:21:13,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 18:21:13,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 18:21:17,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 18:21:17,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 18:21:17,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-05 18:21:17,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:21:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-05 18:21:18,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:21:18,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004515476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:21:18,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:21:18,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5] total 17 [2021-11-05 18:21:18,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495178962] [2021-11-05 18:21:18,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:21:18,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 18:21:18,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:21:18,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 18:21:18,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2021-11-05 18:21:18,289 INFO L87 Difference]: Start difference. First operand 30337 states and 45938 transitions. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:21:30,788 INFO L93 Difference]: Finished difference Result 341467 states and 522708 transitions. [2021-11-05 18:21:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-05 18:21:30,789 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 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 161 [2021-11-05 18:21:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:21:31,641 INFO L225 Difference]: With dead ends: 341467 [2021-11-05 18:21:31,641 INFO L226 Difference]: Without dead ends: 311222 [2021-11-05 18:21:31,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 1642.87ms TimeCoverageRelationStatistics Valid=1357, Invalid=4963, Unknown=0, NotChecked=0, Total=6320 [2021-11-05 18:21:31,729 INFO L933 BasicCegarLoop]: 6506 mSDtfsCounter, 133695 mSDsluCounter, 105036 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 417.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133695 SdHoareTripleChecker+Valid, 111542 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 156.25ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 501.46ms IncrementalHoareTripleChecker+Time [2021-11-05 18:21:31,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133695 Valid, 111542 Invalid, 708 Unknown, 0 Unchecked, 156.25ms Time], IncrementalHoareTripleChecker [53 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 501.46ms Time] [2021-11-05 18:21:31,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311222 states. [2021-11-05 18:21:35,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311222 to 30541. [2021-11-05 18:21:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30541 states, 30518 states have (on average 1.5119601546628219) internal successors, (46142), 30540 states have internal predecessors, (46142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30541 states to 30541 states and 46142 transitions. [2021-11-05 18:21:35,282 INFO L78 Accepts]: Start accepts. Automaton has 30541 states and 46142 transitions. Word has length 161 [2021-11-05 18:21:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:21:35,282 INFO L470 AbstractCegarLoop]: Abstraction has 30541 states and 46142 transitions. [2021-11-05 18:21:35,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:35,282 INFO L276 IsEmpty]: Start isEmpty. Operand 30541 states and 46142 transitions. [2021-11-05 18:21:35,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-05 18:21:35,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:21:35,286 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:21:35,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 18:21:35,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-05 18:21:35,487 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:21:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:21:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1018991725, now seen corresponding path program 1 times [2021-11-05 18:21:35,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:21:35,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70743026] [2021-11-05 18:21:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:21:35,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:21:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:21:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-05 18:21:35,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:21:35,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70743026] [2021-11-05 18:21:35,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70743026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:21:35,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:21:35,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:21:35,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706946314] [2021-11-05 18:21:35,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:21:35,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:21:35,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:21:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:21:35,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:21:35,631 INFO L87 Difference]: Start difference. First operand 30541 states and 46142 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:39,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:21:39,014 INFO L93 Difference]: Finished difference Result 88744 states and 134933 transitions. [2021-11-05 18:21:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:21:39,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 161 [2021-11-05 18:21:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:21:39,109 INFO L225 Difference]: With dead ends: 88744 [2021-11-05 18:21:39,109 INFO L226 Difference]: Without dead ends: 58295 [2021-11-05 18:21:39,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.04ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:21:39,137 INFO L933 BasicCegarLoop]: 7129 mSDtfsCounter, 11001 mSDsluCounter, 10385 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11001 SdHoareTripleChecker+Valid, 17514 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.86ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.47ms IncrementalHoareTripleChecker+Time [2021-11-05 18:21:39,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11001 Valid, 17514 Invalid, 45 Unknown, 0 Unchecked, 14.86ms Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 33.47ms Time] [2021-11-05 18:21:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58295 states. [2021-11-05 18:21:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58295 to 30541. [2021-11-05 18:21:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30541 states, 30518 states have (on average 1.5107805229700504) internal successors, (46106), 30540 states have internal predecessors, (46106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30541 states to 30541 states and 46106 transitions. [2021-11-05 18:21:41,280 INFO L78 Accepts]: Start accepts. Automaton has 30541 states and 46106 transitions. Word has length 161 [2021-11-05 18:21:41,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:21:41,280 INFO L470 AbstractCegarLoop]: Abstraction has 30541 states and 46106 transitions. [2021-11-05 18:21:41,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 30541 states and 46106 transitions. [2021-11-05 18:21:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-05 18:21:41,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:21:41,285 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:21:41,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 18:21:41,286 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:21:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:21:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1204279584, now seen corresponding path program 1 times [2021-11-05 18:21:41,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:21:41,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75681948] [2021-11-05 18:21:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:21:41,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:21:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:21:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-05 18:21:41,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:21:41,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75681948] [2021-11-05 18:21:41,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75681948] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:21:41,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591639102] [2021-11-05 18:21:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:21:41,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:21:41,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:21:41,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 18:21:41,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 18:21:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:21:50,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-05 18:21:50,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:21:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-05 18:21:51,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 18:21:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-05 18:21:51,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591639102] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 18:21:51,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 18:21:51,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2021-11-05 18:21:51,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560614531] [2021-11-05 18:21:51,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 18:21:51,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 18:21:51,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:21:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 18:21:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-05 18:21:51,509 INFO L87 Difference]: Start difference. First operand 30541 states and 46106 transitions. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:21:54,540 INFO L93 Difference]: Finished difference Result 61210 states and 92507 transitions. [2021-11-05 18:21:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 18:21:54,541 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-05 18:21:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:21:54,588 INFO L225 Difference]: With dead ends: 61210 [2021-11-05 18:21:54,588 INFO L226 Difference]: Without dead ends: 30709 [2021-11-05 18:21:54,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 177.38ms TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-05 18:21:54,611 INFO L933 BasicCegarLoop]: 3729 mSDtfsCounter, 3665 mSDsluCounter, 18465 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 781.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3665 SdHoareTripleChecker+Valid, 22194 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.96ms SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 902.19ms IncrementalHoareTripleChecker+Time [2021-11-05 18:21:54,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3665 Valid, 22194 Invalid, 789 Unknown, 0 Unchecked, 16.96ms Time], IncrementalHoareTripleChecker [222 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 902.19ms Time] [2021-11-05 18:21:54,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30709 states. [2021-11-05 18:21:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30709 to 30709. [2021-11-05 18:21:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30709 states, 30686 states have (on average 1.5081796258880271) internal successors, (46280), 30708 states have internal predecessors, (46280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30709 states to 30709 states and 46280 transitions. [2021-11-05 18:21:56,625 INFO L78 Accepts]: Start accepts. Automaton has 30709 states and 46280 transitions. Word has length 167 [2021-11-05 18:21:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:21:56,625 INFO L470 AbstractCegarLoop]: Abstraction has 30709 states and 46280 transitions. [2021-11-05 18:21:56,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:21:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 30709 states and 46280 transitions. [2021-11-05 18:21:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-05 18:21:56,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:21:56,629 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:21:56,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-05 18:21:56,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:21:56,830 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:21:56,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:21:56,831 INFO L85 PathProgramCache]: Analyzing trace with hash -209660256, now seen corresponding path program 2 times [2021-11-05 18:21:56,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:21:56,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596618787] [2021-11-05 18:21:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:21:56,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:21:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:21:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-05 18:21:57,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:21:57,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596618787] [2021-11-05 18:21:57,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596618787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:21:57,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097156471] [2021-11-05 18:21:57,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 18:21:57,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:21:57,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:21:57,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 18:21:57,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 18:22:17,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 18:22:17,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 18:22:17,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2464 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-05 18:22:17,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:22:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-05 18:22:17,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 18:22:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-05 18:22:17,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097156471] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 18:22:17,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 18:22:17,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-11-05 18:22:17,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694128921] [2021-11-05 18:22:17,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 18:22:17,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 18:22:17,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 18:22:17,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-05 18:22:17,956 INFO L87 Difference]: Start difference. First operand 30709 states and 46280 transitions. Second operand has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:22:27,796 INFO L93 Difference]: Finished difference Result 61931 states and 93648 transitions. [2021-11-05 18:22:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 18:22:27,797 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-11-05 18:22:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:22:27,844 INFO L225 Difference]: With dead ends: 61931 [2021-11-05 18:22:27,844 INFO L226 Difference]: Without dead ends: 31291 [2021-11-05 18:22:27,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1976.43ms TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-05 18:22:27,864 INFO L933 BasicCegarLoop]: 3735 mSDtfsCounter, 0 mSDsluCounter, 29544 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5517.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33279 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.87ms SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5770.26ms IncrementalHoareTripleChecker+Time [2021-11-05 18:22:27,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33279 Invalid, 1173 Unknown, 0 Unchecked, 18.87ms Time], IncrementalHoareTripleChecker [510 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 5770.26ms Time] [2021-11-05 18:22:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31291 states. [2021-11-05 18:22:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31291 to 31291. [2021-11-05 18:22:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31291 states, 31268 states have (on average 1.4987207368555713) internal successors, (46862), 31290 states have internal predecessors, (46862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31291 states to 31291 states and 46862 transitions. [2021-11-05 18:22:29,876 INFO L78 Accepts]: Start accepts. Automaton has 31291 states and 46862 transitions. Word has length 179 [2021-11-05 18:22:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:22:29,877 INFO L470 AbstractCegarLoop]: Abstraction has 31291 states and 46862 transitions. [2021-11-05 18:22:29,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 31291 states and 46862 transitions. [2021-11-05 18:22:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-05 18:22:29,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:22:29,881 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:22:29,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-05 18:22:30,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:22:30,082 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:22:30,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:22:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1923038560, now seen corresponding path program 3 times [2021-11-05 18:22:30,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:22:30,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612799584] [2021-11-05 18:22:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:22:30,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:22:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:22:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-05 18:22:30,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:22:30,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612799584] [2021-11-05 18:22:30,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612799584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:22:30,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:22:30,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 18:22:30,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656259289] [2021-11-05 18:22:30,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:22:30,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 18:22:30,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:30,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 18:22:30,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-11-05 18:22:30,510 INFO L87 Difference]: Start difference. First operand 31291 states and 46862 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:32,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:22:34,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:22:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:22:45,548 INFO L93 Difference]: Finished difference Result 153850 states and 231268 transitions. [2021-11-05 18:22:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-05 18:22:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-11-05 18:22:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:22:45,766 INFO L225 Difference]: With dead ends: 153850 [2021-11-05 18:22:45,766 INFO L226 Difference]: Without dead ends: 122533 [2021-11-05 18:22:45,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1379.48ms TimeCoverageRelationStatistics Valid=1001, Invalid=2905, Unknown=0, NotChecked=0, Total=3906 [2021-11-05 18:22:45,802 INFO L933 BasicCegarLoop]: 3890 mSDtfsCounter, 122711 mSDsluCounter, 68509 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4798.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122711 SdHoareTripleChecker+Valid, 72399 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 121.29ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5022.89ms IncrementalHoareTripleChecker+Time [2021-11-05 18:22:45,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122711 Valid, 72399 Invalid, 1327 Unknown, 0 Unchecked, 121.29ms Time], IncrementalHoareTripleChecker [52 Valid, 1273 Invalid, 2 Unknown, 0 Unchecked, 5022.89ms Time] [2021-11-05 18:22:45,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122533 states. [2021-11-05 18:22:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122533 to 15356. [2021-11-05 18:22:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15356 states, 15333 states have (on average 1.5055109893693341) internal successors, (23084), 15355 states have internal predecessors, (23084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15356 states to 15356 states and 23084 transitions. [2021-11-05 18:22:47,574 INFO L78 Accepts]: Start accepts. Automaton has 15356 states and 23084 transitions. Word has length 185 [2021-11-05 18:22:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:22:47,575 INFO L470 AbstractCegarLoop]: Abstraction has 15356 states and 23084 transitions. [2021-11-05 18:22:47,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 15356 states and 23084 transitions. [2021-11-05 18:22:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-05 18:22:47,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:22:47,578 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:22:47,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 18:22:47,578 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:22:47,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:22:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1285573462, now seen corresponding path program 1 times [2021-11-05 18:22:47,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:22:47,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673118470] [2021-11-05 18:22:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:22:47,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:22:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:22:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-05 18:22:47,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:22:47,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673118470] [2021-11-05 18:22:47,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673118470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:22:47,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:22:47,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:22:47,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533929138] [2021-11-05 18:22:47,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:22:47,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:22:47,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:22:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:22:47,737 INFO L87 Difference]: Start difference. First operand 15356 states and 23084 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:22:52,172 INFO L93 Difference]: Finished difference Result 60566 states and 91232 transitions. [2021-11-05 18:22:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 18:22:52,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-11-05 18:22:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:22:52,237 INFO L225 Difference]: With dead ends: 60566 [2021-11-05 18:22:52,237 INFO L226 Difference]: Without dead ends: 45347 [2021-11-05 18:22:52,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.12ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:22:52,259 INFO L933 BasicCegarLoop]: 8369 mSDtfsCounter, 20396 mSDsluCounter, 21824 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20396 SdHoareTripleChecker+Valid, 30193 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.19ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.53ms IncrementalHoareTripleChecker+Time [2021-11-05 18:22:52,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20396 Valid, 30193 Invalid, 53 Unknown, 0 Unchecked, 28.19ms Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 41.53ms Time] [2021-11-05 18:22:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45347 states. [2021-11-05 18:22:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45347 to 15228. [2021-11-05 18:22:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15228 states, 15207 states have (on average 1.5063457618202143) internal successors, (22907), 15227 states have internal predecessors, (22907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15228 states to 15228 states and 22907 transitions. [2021-11-05 18:22:53,801 INFO L78 Accepts]: Start accepts. Automaton has 15228 states and 22907 transitions. Word has length 193 [2021-11-05 18:22:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:22:53,801 INFO L470 AbstractCegarLoop]: Abstraction has 15228 states and 22907 transitions. [2021-11-05 18:22:53,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 15228 states and 22907 transitions. [2021-11-05 18:22:53,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-05 18:22:53,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:22:53,804 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:22:53,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 18:22:53,804 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:22:53,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:22:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1414003692, now seen corresponding path program 1 times [2021-11-05 18:22:53,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:22:53,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923261614] [2021-11-05 18:22:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:22:53,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:22:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:22:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-05 18:22:53,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:22:53,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923261614] [2021-11-05 18:22:53,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923261614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:22:53,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:22:53,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:22:53,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866638259] [2021-11-05 18:22:53,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:22:53,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:22:53,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:22:53,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:22:53,937 INFO L87 Difference]: Start difference. First operand 15228 states and 22907 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:00,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:00,510 INFO L93 Difference]: Finished difference Result 67790 states and 102159 transitions. [2021-11-05 18:23:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 18:23:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-11-05 18:23:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:00,637 INFO L225 Difference]: With dead ends: 67790 [2021-11-05 18:23:00,637 INFO L226 Difference]: Without dead ends: 67774 [2021-11-05 18:23:00,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 21.17ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 18:23:00,655 INFO L933 BasicCegarLoop]: 14226 mSDtfsCounter, 14481 mSDsluCounter, 32403 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14481 SdHoareTripleChecker+Valid, 46629 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.21ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.77ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:00,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14481 Valid, 46629 Invalid, 95 Unknown, 0 Unchecked, 40.21ms Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 72.77ms Time] [2021-11-05 18:23:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67774 states. [2021-11-05 18:23:02,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67774 to 15212. [2021-11-05 18:23:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15212 states, 15193 states have (on average 1.5060883301520438) internal successors, (22882), 15211 states have internal predecessors, (22882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15212 states to 15212 states and 22882 transitions. [2021-11-05 18:23:02,516 INFO L78 Accepts]: Start accepts. Automaton has 15212 states and 22882 transitions. Word has length 193 [2021-11-05 18:23:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:02,516 INFO L470 AbstractCegarLoop]: Abstraction has 15212 states and 22882 transitions. [2021-11-05 18:23:02,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 15212 states and 22882 transitions. [2021-11-05 18:23:02,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-05 18:23:02,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:02,520 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:02,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 18:23:02,521 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:23:02,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1370091449, now seen corresponding path program 1 times [2021-11-05 18:23:02,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:02,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813823953] [2021-11-05 18:23:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:02,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-05 18:23:02,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:02,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813823953] [2021-11-05 18:23:02,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813823953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:02,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:02,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 18:23:02,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856798641] [2021-11-05 18:23:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:02,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 18:23:02,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 18:23:02,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:23:02,722 INFO L87 Difference]: Start difference. First operand 15212 states and 22882 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:14,449 INFO L93 Difference]: Finished difference Result 131087 states and 199095 transitions. [2021-11-05 18:23:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 18:23:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-05 18:23:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:14,657 INFO L225 Difference]: With dead ends: 131087 [2021-11-05 18:23:14,657 INFO L226 Difference]: Without dead ends: 116012 [2021-11-05 18:23:14,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 104.16ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-05 18:23:14,686 INFO L933 BasicCegarLoop]: 9868 mSDtfsCounter, 37894 mSDsluCounter, 62360 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37894 SdHoareTripleChecker+Valid, 72228 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.65ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.76ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:14,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37894 Valid, 72228 Invalid, 189 Unknown, 0 Unchecked, 72.65ms Time], IncrementalHoareTripleChecker [14 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 157.76ms Time] [2021-11-05 18:23:14,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116012 states. [2021-11-05 18:23:16,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116012 to 15252. [2021-11-05 18:23:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15252 states, 15233 states have (on average 1.5047594039256877) internal successors, (22922), 15251 states have internal predecessors, (22922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15252 states to 15252 states and 22922 transitions. [2021-11-05 18:23:17,029 INFO L78 Accepts]: Start accepts. Automaton has 15252 states and 22922 transitions. Word has length 196 [2021-11-05 18:23:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:17,029 INFO L470 AbstractCegarLoop]: Abstraction has 15252 states and 22922 transitions. [2021-11-05 18:23:17,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:17,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15252 states and 22922 transitions. [2021-11-05 18:23:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-05 18:23:17,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:17,033 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:17,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 18:23:17,033 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:23:17,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1884218456, now seen corresponding path program 1 times [2021-11-05 18:23:17,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:17,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063546091] [2021-11-05 18:23:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:17,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-05 18:23:17,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:17,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063546091] [2021-11-05 18:23:17,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063546091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:17,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:17,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:23:17,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620308731] [2021-11-05 18:23:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:17,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:23:17,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:17,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:23:17,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:23:17,156 INFO L87 Difference]: Start difference. First operand 15252 states and 22922 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:19,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:23:22,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:22,217 INFO L93 Difference]: Finished difference Result 39817 states and 59855 transitions. [2021-11-05 18:23:22,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:23:22,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 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 197 [2021-11-05 18:23:22,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:22,259 INFO L225 Difference]: With dead ends: 39817 [2021-11-05 18:23:22,260 INFO L226 Difference]: Without dead ends: 24702 [2021-11-05 18:23:22,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.32ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:23:22,278 INFO L933 BasicCegarLoop]: 7037 mSDtfsCounter, 6541 mSDsluCounter, 7527 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2027.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6541 SdHoareTripleChecker+Valid, 14564 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2055.04ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:22,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6541 Valid, 14564 Invalid, 16 Unknown, 0 Unchecked, 12.24ms Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 2055.04ms Time] [2021-11-05 18:23:22,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24702 states. [2021-11-05 18:23:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24702 to 15268. [2021-11-05 18:23:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15268 states, 15249 states have (on average 1.5042297855597089) internal successors, (22938), 15267 states have internal predecessors, (22938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15268 states to 15268 states and 22938 transitions. [2021-11-05 18:23:24,383 INFO L78 Accepts]: Start accepts. Automaton has 15268 states and 22938 transitions. Word has length 197 [2021-11-05 18:23:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:24,383 INFO L470 AbstractCegarLoop]: Abstraction has 15268 states and 22938 transitions. [2021-11-05 18:23:24,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 15268 states and 22938 transitions. [2021-11-05 18:23:24,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-05 18:23:24,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:24,387 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:24,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 18:23:24,387 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:23:24,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:24,387 INFO L85 PathProgramCache]: Analyzing trace with hash 446864714, now seen corresponding path program 1 times [2021-11-05 18:23:24,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:24,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423925892] [2021-11-05 18:23:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:24,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-05 18:23:24,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:24,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423925892] [2021-11-05 18:23:24,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423925892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:24,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:24,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 18:23:24,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834749259] [2021-11-05 18:23:24,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:24,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 18:23:24,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 18:23:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-05 18:23:24,697 INFO L87 Difference]: Start difference. First operand 15268 states and 22938 transitions. Second operand has 13 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:32,474 INFO L93 Difference]: Finished difference Result 73464 states and 111349 transitions. [2021-11-05 18:23:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 18:23:32,475 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2021-11-05 18:23:32,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:32,574 INFO L225 Difference]: With dead ends: 73464 [2021-11-05 18:23:32,574 INFO L226 Difference]: Without dead ends: 58309 [2021-11-05 18:23:32,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 475.71ms TimeCoverageRelationStatistics Valid=336, Invalid=786, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 18:23:32,600 INFO L933 BasicCegarLoop]: 6408 mSDtfsCounter, 58785 mSDsluCounter, 43483 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 326.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58785 SdHoareTripleChecker+Valid, 49891 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.75ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 389.37ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:32,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58785 Valid, 49891 Invalid, 602 Unknown, 0 Unchecked, 71.75ms Time], IncrementalHoareTripleChecker [18 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 389.37ms Time] [2021-11-05 18:23:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58309 states. [2021-11-05 18:23:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58309 to 15257. [2021-11-05 18:23:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15257 states, 15238 states have (on average 1.5041344008400053) internal successors, (22920), 15256 states have internal predecessors, (22920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15257 states to 15257 states and 22920 transitions. [2021-11-05 18:23:34,860 INFO L78 Accepts]: Start accepts. Automaton has 15257 states and 22920 transitions. Word has length 198 [2021-11-05 18:23:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:34,861 INFO L470 AbstractCegarLoop]: Abstraction has 15257 states and 22920 transitions. [2021-11-05 18:23:34,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 15257 states and 22920 transitions. [2021-11-05 18:23:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-05 18:23:34,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:34,864 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:34,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 18:23:34,864 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:23:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash 43582912, now seen corresponding path program 1 times [2021-11-05 18:23:34,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:34,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294589421] [2021-11-05 18:23:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:34,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-05 18:23:34,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:34,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294589421] [2021-11-05 18:23:34,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294589421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:34,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:34,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:23:34,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392012440] [2021-11-05 18:23:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:34,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:23:35,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:23:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:35,000 INFO L87 Difference]: Start difference. First operand 15257 states and 22920 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:38,648 INFO L93 Difference]: Finished difference Result 44555 states and 67341 transitions. [2021-11-05 18:23:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:23:38,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2021-11-05 18:23:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:38,696 INFO L225 Difference]: With dead ends: 44555 [2021-11-05 18:23:38,697 INFO L226 Difference]: Without dead ends: 29435 [2021-11-05 18:23:38,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:38,713 INFO L933 BasicCegarLoop]: 4746 mSDtfsCounter, 3591 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 8289 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.96ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.75ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:38,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 8289 Invalid, 19 Unknown, 0 Unchecked, 8.96ms Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 25.75ms Time] [2021-11-05 18:23:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29435 states. [2021-11-05 18:23:40,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29435 to 15090. [2021-11-05 18:23:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15090 states, 15071 states have (on average 1.5068674938623847) internal successors, (22710), 15089 states have internal predecessors, (22710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15090 states to 15090 states and 22710 transitions. [2021-11-05 18:23:40,684 INFO L78 Accepts]: Start accepts. Automaton has 15090 states and 22710 transitions. Word has length 211 [2021-11-05 18:23:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:40,685 INFO L470 AbstractCegarLoop]: Abstraction has 15090 states and 22710 transitions. [2021-11-05 18:23:40,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 15090 states and 22710 transitions. [2021-11-05 18:23:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-05 18:23:40,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:40,688 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:40,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 18:23:40,688 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:23:40,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:40,688 INFO L85 PathProgramCache]: Analyzing trace with hash 340170314, now seen corresponding path program 1 times [2021-11-05 18:23:40,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:40,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916885798] [2021-11-05 18:23:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:40,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-05 18:23:40,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:40,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916885798] [2021-11-05 18:23:40,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916885798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:40,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:40,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 18:23:40,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089209659] [2021-11-05 18:23:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:40,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 18:23:40,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 18:23:40,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:23:40,911 INFO L87 Difference]: Start difference. First operand 15090 states and 22710 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:50,117 INFO L93 Difference]: Finished difference Result 85298 states and 130159 transitions. [2021-11-05 18:23:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 18:23:50,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2021-11-05 18:23:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:50,248 INFO L225 Difference]: With dead ends: 85298 [2021-11-05 18:23:50,248 INFO L226 Difference]: Without dead ends: 70340 [2021-11-05 18:23:50,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 97.51ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 18:23:50,282 INFO L933 BasicCegarLoop]: 12055 mSDtfsCounter, 24222 mSDsluCounter, 48206 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 183.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24222 SdHoareTripleChecker+Valid, 60261 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.61ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 226.65ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:50,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24222 Valid, 60261 Invalid, 225 Unknown, 0 Unchecked, 54.61ms Time], IncrementalHoareTripleChecker [13 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 226.65ms Time] [2021-11-05 18:23:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70340 states. [2021-11-05 18:23:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70340 to 15125. [2021-11-05 18:23:52,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15125 states, 15106 states have (on average 1.5056269032172647) internal successors, (22744), 15124 states have internal predecessors, (22744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:52,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15125 states to 15125 states and 22744 transitions. [2021-11-05 18:23:52,742 INFO L78 Accepts]: Start accepts. Automaton has 15125 states and 22744 transitions. Word has length 219 [2021-11-05 18:23:52,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:52,743 INFO L470 AbstractCegarLoop]: Abstraction has 15125 states and 22744 transitions. [2021-11-05 18:23:52,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 15125 states and 22744 transitions. [2021-11-05 18:23:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-05 18:23:52,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:52,746 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:52,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 18:23:52,746 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:23:52,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:52,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1851486818, now seen corresponding path program 1 times [2021-11-05 18:23:52,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:52,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284547855] [2021-11-05 18:23:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:52,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-05 18:23:52,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:52,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284547855] [2021-11-05 18:23:52,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284547855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:52,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:52,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:23:52,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433026933] [2021-11-05 18:23:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:52,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:23:52,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:23:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:52,928 INFO L87 Difference]: Start difference. First operand 15125 states and 22744 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:56,134 INFO L93 Difference]: Finished difference Result 38811 states and 58707 transitions. [2021-11-05 18:23:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:23:56,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 225 [2021-11-05 18:23:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:56,173 INFO L225 Difference]: With dead ends: 38811 [2021-11-05 18:23:56,173 INFO L226 Difference]: Without dead ends: 23823 [2021-11-05 18:23:56,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:56,193 INFO L933 BasicCegarLoop]: 3731 mSDtfsCounter, 2487 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 7278 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.81ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:56,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2487 Valid, 7278 Invalid, 6 Unknown, 0 Unchecked, 7.84ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.81ms Time] [2021-11-05 18:23:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23823 states. [2021-11-05 18:23:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23823 to 15125. [2021-11-05 18:23:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15125 states, 15106 states have (on average 1.5054945054945055) internal successors, (22742), 15124 states have internal predecessors, (22742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15125 states to 15125 states and 22742 transitions. [2021-11-05 18:23:58,399 INFO L78 Accepts]: Start accepts. Automaton has 15125 states and 22742 transitions. Word has length 225 [2021-11-05 18:23:58,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:58,399 INFO L470 AbstractCegarLoop]: Abstraction has 15125 states and 22742 transitions. [2021-11-05 18:23:58,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:58,400 INFO L276 IsEmpty]: Start isEmpty. Operand 15125 states and 22742 transitions. [2021-11-05 18:23:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-05 18:23:58,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:58,403 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:58,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 18:23:58,403 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:23:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1878552420, now seen corresponding path program 1 times [2021-11-05 18:23:58,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:58,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763946824] [2021-11-05 18:23:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:58,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-05 18:23:58,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:58,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763946824] [2021-11-05 18:23:58,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763946824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:58,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:58,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 18:23:58,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128486020] [2021-11-05 18:23:58,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:58,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 18:23:58,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 18:23:58,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-11-05 18:23:58,900 INFO L87 Difference]: Start difference. First operand 15125 states and 22742 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:00,915 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 [] [2021-11-05 18:24:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:24:24,078 INFO L93 Difference]: Finished difference Result 131120 states and 197747 transitions. [2021-11-05 18:24:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-11-05 18:24:24,078 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 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 225 [2021-11-05 18:24:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:24:24,296 INFO L225 Difference]: With dead ends: 131120 [2021-11-05 18:24:24,297 INFO L226 Difference]: Without dead ends: 116132 [2021-11-05 18:24:24,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7041 ImplicationChecksByTransitivity, 4068.73ms TimeCoverageRelationStatistics Valid=3514, Invalid=15118, Unknown=0, NotChecked=0, Total=18632 [2021-11-05 18:24:24,329 INFO L933 BasicCegarLoop]: 9269 mSDtfsCounter, 89708 mSDsluCounter, 153325 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2612.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89708 SdHoareTripleChecker+Valid, 162594 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 176.01ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2754.44ms IncrementalHoareTripleChecker+Time [2021-11-05 18:24:24,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89708 Valid, 162594 Invalid, 941 Unknown, 0 Unchecked, 176.01ms Time], IncrementalHoareTripleChecker [27 Valid, 913 Invalid, 1 Unknown, 0 Unchecked, 2754.44ms Time] [2021-11-05 18:24:24,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116132 states. [2021-11-05 18:24:27,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116132 to 15149. [2021-11-05 18:24:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15149 states, 15130 states have (on average 1.5046926635822868) internal successors, (22766), 15148 states have internal predecessors, (22766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15149 states to 15149 states and 22766 transitions. [2021-11-05 18:24:27,468 INFO L78 Accepts]: Start accepts. Automaton has 15149 states and 22766 transitions. Word has length 225 [2021-11-05 18:24:27,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:24:27,469 INFO L470 AbstractCegarLoop]: Abstraction has 15149 states and 22766 transitions. [2021-11-05 18:24:27,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 15149 states and 22766 transitions. [2021-11-05 18:24:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-05 18:24:27,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:24:27,472 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:24:27,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 18:24:27,472 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:24:27,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:24:27,472 INFO L85 PathProgramCache]: Analyzing trace with hash -476822005, now seen corresponding path program 1 times [2021-11-05 18:24:27,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:24:27,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565694915] [2021-11-05 18:24:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:24:27,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:24:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:24:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-05 18:24:27,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:24:27,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565694915] [2021-11-05 18:24:27,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565694915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:24:27,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558508534] [2021-11-05 18:24:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:24:27,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:24:27,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:24:27,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 18:24:27,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 18:24:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:24:38,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 3093 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-05 18:24:38,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:24:38,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 18:24:38,935 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 18:24:38,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-05 18:24:38,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-05 18:24:39,070 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-05 18:24:39,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-05 18:24:39,085 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-05 18:24:39,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2021-11-05 18:24:43,232 INFO L354 Elim1Store]: treesize reduction 74, result has 12.9 percent of original size [2021-11-05 18:24:43,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 47 [2021-11-05 18:24:43,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-05 18:24:49,408 INFO L354 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2021-11-05 18:24:49,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2021-11-05 18:24:53,595 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-05 18:24:53,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-11-05 18:24:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-05 18:24:53,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:24:53,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558508534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:24:53,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:24:53,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 27 [2021-11-05 18:24:53,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916722074] [2021-11-05 18:24:53,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:24:53,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 18:24:53,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:24:53,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 18:24:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=628, Unknown=3, NotChecked=0, Total=702 [2021-11-05 18:24:53,661 INFO L87 Difference]: Start difference. First operand 15149 states and 22766 transitions. Second operand has 15 states, 15 states have (on average 12.666666666666666) internal successors, (190), 15 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:55,676 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 [] [2021-11-05 18:24:57,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:59,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:01,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:03,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:05,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:07,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:25:30,724 INFO L93 Difference]: Finished difference Result 42878 states and 63989 transitions. [2021-11-05 18:25:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-05 18:25:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.666666666666666) internal successors, (190), 15 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-11-05 18:25:30,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:25:30,762 INFO L225 Difference]: With dead ends: 42878 [2021-11-05 18:25:30,763 INFO L226 Difference]: Without dead ends: 27866 [2021-11-05 18:25:30,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 22981.57ms TimeCoverageRelationStatistics Valid=743, Invalid=2676, Unknown=3, NotChecked=0, Total=3422 [2021-11-05 18:25:30,778 INFO L933 BasicCegarLoop]: 6551 mSDtfsCounter, 7909 mSDsluCounter, 65234 mSDsCounter, 0 mSdLazyCounter, 4031 mSolverCounterSat, 160 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22189.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7909 SdHoareTripleChecker+Valid, 71785 SdHoareTripleChecker+Invalid, 5556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.10ms SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 4031 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 1358 IncrementalHoareTripleChecker+Unchecked, 23400.58ms IncrementalHoareTripleChecker+Time [2021-11-05 18:25:30,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7909 Valid, 71785 Invalid, 5556 Unknown, 0 Unchecked, 70.10ms Time], IncrementalHoareTripleChecker [160 Valid, 4031 Invalid, 7 Unknown, 1358 Unchecked, 23400.58ms Time] [2021-11-05 18:25:30,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27866 states. [2021-11-05 18:25:33,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27866 to 15341. [2021-11-05 18:25:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15341 states, 15322 states have (on average 1.5036548753426446) internal successors, (23039), 15340 states have internal predecessors, (23039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15341 states to 15341 states and 23039 transitions. [2021-11-05 18:25:33,397 INFO L78 Accepts]: Start accepts. Automaton has 15341 states and 23039 transitions. Word has length 229 [2021-11-05 18:25:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:25:33,398 INFO L470 AbstractCegarLoop]: Abstraction has 15341 states and 23039 transitions. [2021-11-05 18:25:33,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.666666666666666) internal successors, (190), 15 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 15341 states and 23039 transitions. [2021-11-05 18:25:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-05 18:25:33,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:25:33,401 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:25:33,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 18:25:33,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:25:33,602 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:25:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:25:33,602 INFO L85 PathProgramCache]: Analyzing trace with hash -871188791, now seen corresponding path program 1 times [2021-11-05 18:25:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:25:33,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086427976] [2021-11-05 18:25:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:25:33,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:25:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:25:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-05 18:25:34,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:25:34,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086427976] [2021-11-05 18:25:34,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086427976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:25:34,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:25:34,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 18:25:34,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513845279] [2021-11-05 18:25:34,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:25:34,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 18:25:34,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:25:34,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 18:25:34,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-05 18:25:34,451 INFO L87 Difference]: Start difference. First operand 15341 states and 23039 transitions. Second operand has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 17 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:36,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:38,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:40,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:42,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:26:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:26:17,246 INFO L93 Difference]: Finished difference Result 161142 states and 246018 transitions. [2021-11-05 18:26:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2021-11-05 18:26:17,248 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 17 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-11-05 18:26:17,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:26:17,495 INFO L225 Difference]: With dead ends: 161142 [2021-11-05 18:26:17,496 INFO L226 Difference]: Without dead ends: 145938 [2021-11-05 18:26:17,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12032 ImplicationChecksByTransitivity, 5222.19ms TimeCoverageRelationStatistics Valid=4026, Invalid=25386, Unknown=0, NotChecked=0, Total=29412 [2021-11-05 18:26:17,538 INFO L933 BasicCegarLoop]: 9159 mSDtfsCounter, 106090 mSDsluCounter, 81030 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 66 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10206.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 106090 SdHoareTripleChecker+Valid, 90189 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 173.81ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10855.10ms IncrementalHoareTripleChecker+Time [2021-11-05 18:26:17,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106090 Valid, 90189 Invalid, 2673 Unknown, 0 Unchecked, 173.81ms Time], IncrementalHoareTripleChecker [66 Valid, 2603 Invalid, 4 Unknown, 0 Unchecked, 10855.10ms Time] [2021-11-05 18:26:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145938 states. [2021-11-05 18:26:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145938 to 15157. [2021-11-05 18:26:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15157 states, 15138 states have (on average 1.5044259479455675) internal successors, (22774), 15156 states have internal predecessors, (22774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:26:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15157 states to 15157 states and 22774 transitions. [2021-11-05 18:26:21,637 INFO L78 Accepts]: Start accepts. Automaton has 15157 states and 22774 transitions. Word has length 229 [2021-11-05 18:26:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:26:21,637 INFO L470 AbstractCegarLoop]: Abstraction has 15157 states and 22774 transitions. [2021-11-05 18:26:21,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 17 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:26:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 15157 states and 22774 transitions. [2021-11-05 18:26:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-05 18:26:21,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:26:21,640 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:26:21,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 18:26:21,640 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 18:26:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:26:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash 732868907, now seen corresponding path program 1 times [2021-11-05 18:26:21,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:26:21,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231642254] [2021-11-05 18:26:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:26:21,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:26:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:26:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-05 18:26:22,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:26:22,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231642254] [2021-11-05 18:26:22,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231642254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:26:22,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652637685] [2021-11-05 18:26:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:26:22,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:26:22,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:26:22,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 18:26:22,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process