/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:23:05,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:23:05,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:23:05,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:23:05,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:23:05,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:23:05,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:23:05,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:23:05,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:23:05,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:23:05,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:23:05,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:23:05,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:23:05,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:23:05,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:23:05,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:23:05,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:23:05,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:23:05,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:23:05,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:23:05,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:23:05,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:23:05,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:23:05,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:23:05,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:23:05,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:23:05,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:23:05,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:23:05,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:23:05,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:23:05,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:23:05,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:23:05,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:23:05,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:23:05,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:23:05,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:23:05,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:23:05,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:23:05,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:23:05,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:23:05,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:23:05,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:23:05,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:23:05,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:23:05,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:23:05,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:23:05,391 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:23:05,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:23:05,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:23:05,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:23:05,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:23:05,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:23:05,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:23:05,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:23:05,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:23:05,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:23:05,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:23:05,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:23:05,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:23:05,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:23:05,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:23:05,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:23:05,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:23:05,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:23:05,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:23:05,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:23:05,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:23:05,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:23:05,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:23:05,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:23:05,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:23:05,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:23:05,811 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:23:05,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2020-12-22 13:23:05,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f762e62c/cace22588cfe41928f95505bfa96e510/FLAG7049b5226 [2020-12-22 13:23:07,064 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:23:07,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2020-12-22 13:23:07,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f762e62c/cace22588cfe41928f95505bfa96e510/FLAG7049b5226 [2020-12-22 13:23:07,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f762e62c/cace22588cfe41928f95505bfa96e510 [2020-12-22 13:23:07,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:23:07,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:23:07,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:23:07,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:23:07,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:23:07,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:23:07" (1/1) ... [2020-12-22 13:23:07,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5186a75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:07, skipping insertion in model container [2020-12-22 13:23:07,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:23:07" (1/1) ... [2020-12-22 13:23:07,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:23:07,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:23:08,779 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2020-12-22 13:23:10,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:23:10,208 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:23:10,408 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2020-12-22 13:23:10,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:23:11,092 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:23:11,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11 WrapperNode [2020-12-22 13:23:11,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:23:11,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:23:11,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:23:11,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:23:11,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... [2020-12-22 13:23:11,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... [2020-12-22 13:23:11,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:23:11,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:23:11,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:23:11,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:23:11,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... [2020-12-22 13:23:11,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... [2020-12-22 13:23:12,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... [2020-12-22 13:23:12,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... [2020-12-22 13:23:12,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... [2020-12-22 13:23:12,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... [2020-12-22 13:23:12,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... [2020-12-22 13:23:12,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:23:12,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:23:12,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:23:12,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:23:12,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:23:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:23:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:23:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:23:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:23:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2020-12-22 13:23:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:23:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:23:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:23:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:23:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:23:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:23:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:23:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:23:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:23:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:23:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:23:56,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:23:56,095 INFO L299 CfgBuilder]: Removed 2280 assume(true) statements. [2020-12-22 13:23:56,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:23:56 BoogieIcfgContainer [2020-12-22 13:23:56,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:23:56,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:23:56,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:23:56,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:23:56,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:23:07" (1/3) ... [2020-12-22 13:23:56,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b875450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:23:56, skipping insertion in model container [2020-12-22 13:23:56,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:23:11" (2/3) ... [2020-12-22 13:23:56,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b875450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:23:56, skipping insertion in model container [2020-12-22 13:23:56,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:23:56" (3/3) ... [2020-12-22 13:23:56,110 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2020-12-22 13:23:56,117 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:23:56,125 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 13:23:56,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 13:23:56,197 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:23:56,197 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:23:56,197 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:23:56,197 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:23:56,197 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:23:56,197 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:23:56,198 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:23:56,198 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:23:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states. [2020-12-22 13:23:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 13:23:56,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:23:56,279 INFO L422 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] [2020-12-22 13:23:56,279 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:23:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:23:56,285 INFO L82 PathProgramCache]: Analyzing trace with hash -883522735, now seen corresponding path program 1 times [2020-12-22 13:23:56,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:23:56,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372646110] [2020-12-22 13:23:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:23:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:23:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:23:57,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372646110] [2020-12-22 13:23:57,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:23:57,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:23:57,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583590981] [2020-12-22 13:23:57,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:23:57,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:23:57,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:23:57,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:23:57,671 INFO L87 Difference]: Start difference. First operand 2753 states. Second operand 3 states. [2020-12-22 13:23:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:23:58,164 INFO L93 Difference]: Finished difference Result 5504 states and 8199 transitions. [2020-12-22 13:23:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:23:58,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-22 13:23:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:23:58,202 INFO L225 Difference]: With dead ends: 5504 [2020-12-22 13:23:58,203 INFO L226 Difference]: Without dead ends: 2747 [2020-12-22 13:23:58,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:23:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2020-12-22 13:23:58,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2747. [2020-12-22 13:23:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2747 states. [2020-12-22 13:23:58,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 4002 transitions. [2020-12-22 13:23:58,391 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 4002 transitions. Word has length 38 [2020-12-22 13:23:58,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:23:58,392 INFO L481 AbstractCegarLoop]: Abstraction has 2747 states and 4002 transitions. [2020-12-22 13:23:58,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:23:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 4002 transitions. [2020-12-22 13:23:58,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 13:23:58,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:23:58,402 INFO L422 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] [2020-12-22 13:23:58,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:23:58,402 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:23:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:23:58,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2084117284, now seen corresponding path program 1 times [2020-12-22 13:23:58,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:23:58,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084222104] [2020-12-22 13:23:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:23:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:23:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:23:59,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084222104] [2020-12-22 13:23:59,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:23:59,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:23:59,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136267191] [2020-12-22 13:23:59,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:23:59,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:23:59,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:23:59,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:23:59,067 INFO L87 Difference]: Start difference. First operand 2747 states and 4002 transitions. Second operand 3 states. [2020-12-22 13:23:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:23:59,652 INFO L93 Difference]: Finished difference Result 5448 states and 7949 transitions. [2020-12-22 13:23:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:23:59,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 13:23:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:23:59,669 INFO L225 Difference]: With dead ends: 5448 [2020-12-22 13:23:59,669 INFO L226 Difference]: Without dead ends: 2748 [2020-12-22 13:23:59,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:23:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2020-12-22 13:23:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2748. [2020-12-22 13:23:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2748 states. [2020-12-22 13:23:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 4003 transitions. [2020-12-22 13:23:59,774 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 4003 transitions. Word has length 39 [2020-12-22 13:23:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:23:59,775 INFO L481 AbstractCegarLoop]: Abstraction has 2748 states and 4003 transitions. [2020-12-22 13:23:59,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:23:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 4003 transitions. [2020-12-22 13:23:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 13:23:59,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:23:59,781 INFO L422 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] [2020-12-22 13:23:59,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:23:59,781 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:23:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:23:59,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1447210349, now seen corresponding path program 1 times [2020-12-22 13:23:59,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:23:59,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620928820] [2020-12-22 13:23:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:24:00,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620928820] [2020-12-22 13:24:00,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:00,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:24:00,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675050994] [2020-12-22 13:24:00,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:24:00,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:00,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:24:00,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:00,561 INFO L87 Difference]: Start difference. First operand 2748 states and 4003 transitions. Second operand 3 states. [2020-12-22 13:24:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:03,088 INFO L93 Difference]: Finished difference Result 8109 states and 11849 transitions. [2020-12-22 13:24:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:24:03,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 13:24:03,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:03,132 INFO L225 Difference]: With dead ends: 8109 [2020-12-22 13:24:03,133 INFO L226 Difference]: Without dead ends: 5410 [2020-12-22 13:24:03,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2020-12-22 13:24:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 5410. [2020-12-22 13:24:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5410 states. [2020-12-22 13:24:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 7902 transitions. [2020-12-22 13:24:03,347 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 7902 transitions. Word has length 40 [2020-12-22 13:24:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:03,347 INFO L481 AbstractCegarLoop]: Abstraction has 5410 states and 7902 transitions. [2020-12-22 13:24:03,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:24:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 7902 transitions. [2020-12-22 13:24:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 13:24:03,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:03,350 INFO L422 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] [2020-12-22 13:24:03,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:24:03,351 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:03,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1376861974, now seen corresponding path program 1 times [2020-12-22 13:24:03,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:03,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44618800] [2020-12-22 13:24:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:24:03,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44618800] [2020-12-22 13:24:03,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:03,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:24:03,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091806991] [2020-12-22 13:24:03,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:24:03,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:03,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:24:03,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:24:03,954 INFO L87 Difference]: Start difference. First operand 5410 states and 7902 transitions. Second operand 5 states. [2020-12-22 13:24:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:04,644 INFO L93 Difference]: Finished difference Result 16130 states and 23587 transitions. [2020-12-22 13:24:04,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:24:04,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-12-22 13:24:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:04,704 INFO L225 Difference]: With dead ends: 16130 [2020-12-22 13:24:04,704 INFO L226 Difference]: Without dead ends: 10759 [2020-12-22 13:24:04,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:24:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10759 states. [2020-12-22 13:24:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10759 to 10743. [2020-12-22 13:24:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10743 states. [2020-12-22 13:24:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10743 states to 10743 states and 15708 transitions. [2020-12-22 13:24:05,091 INFO L78 Accepts]: Start accepts. Automaton has 10743 states and 15708 transitions. Word has length 48 [2020-12-22 13:24:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:05,093 INFO L481 AbstractCegarLoop]: Abstraction has 10743 states and 15708 transitions. [2020-12-22 13:24:05,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:24:05,094 INFO L276 IsEmpty]: Start isEmpty. Operand 10743 states and 15708 transitions. [2020-12-22 13:24:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 13:24:05,102 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:05,102 INFO L422 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] [2020-12-22 13:24:05,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:24:05,103 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:05,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:05,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1044322540, now seen corresponding path program 1 times [2020-12-22 13:24:05,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:05,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809382398] [2020-12-22 13:24:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:24:05,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809382398] [2020-12-22 13:24:05,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:05,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:24:05,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848185433] [2020-12-22 13:24:05,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:24:05,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:05,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:24:05,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:05,666 INFO L87 Difference]: Start difference. First operand 10743 states and 15708 transitions. Second operand 3 states. [2020-12-22 13:24:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:06,399 INFO L93 Difference]: Finished difference Result 23411 states and 34155 transitions. [2020-12-22 13:24:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:24:06,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 13:24:06,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:06,470 INFO L225 Difference]: With dead ends: 23411 [2020-12-22 13:24:06,470 INFO L226 Difference]: Without dead ends: 12717 [2020-12-22 13:24:06,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12717 states. [2020-12-22 13:24:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12717 to 12705. [2020-12-22 13:24:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12705 states. [2020-12-22 13:24:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12705 states to 12705 states and 18490 transitions. [2020-12-22 13:24:06,944 INFO L78 Accepts]: Start accepts. Automaton has 12705 states and 18490 transitions. Word has length 79 [2020-12-22 13:24:06,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:06,944 INFO L481 AbstractCegarLoop]: Abstraction has 12705 states and 18490 transitions. [2020-12-22 13:24:06,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:24:06,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12705 states and 18490 transitions. [2020-12-22 13:24:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 13:24:06,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:06,951 INFO L422 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] [2020-12-22 13:24:06,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:24:06,952 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:06,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:06,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1243246926, now seen corresponding path program 1 times [2020-12-22 13:24:06,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:06,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47602604] [2020-12-22 13:24:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:24:07,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47602604] [2020-12-22 13:24:07,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:07,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:24:07,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554344935] [2020-12-22 13:24:07,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:24:07,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:07,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:24:07,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:07,967 INFO L87 Difference]: Start difference. First operand 12705 states and 18490 transitions. Second operand 3 states. [2020-12-22 13:24:08,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:08,888 INFO L93 Difference]: Finished difference Result 34279 states and 50066 transitions. [2020-12-22 13:24:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:24:08,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 13:24:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:08,952 INFO L225 Difference]: With dead ends: 34279 [2020-12-22 13:24:08,952 INFO L226 Difference]: Without dead ends: 21623 [2020-12-22 13:24:08,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21623 states. [2020-12-22 13:24:09,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21623 to 21605. [2020-12-22 13:24:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21605 states. [2020-12-22 13:24:09,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21605 states to 21605 states and 31610 transitions. [2020-12-22 13:24:09,809 INFO L78 Accepts]: Start accepts. Automaton has 21605 states and 31610 transitions. Word has length 83 [2020-12-22 13:24:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:09,811 INFO L481 AbstractCegarLoop]: Abstraction has 21605 states and 31610 transitions. [2020-12-22 13:24:09,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:24:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 21605 states and 31610 transitions. [2020-12-22 13:24:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 13:24:09,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:09,825 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:24:09,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:24:09,825 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:09,826 INFO L82 PathProgramCache]: Analyzing trace with hash 337282533, now seen corresponding path program 1 times [2020-12-22 13:24:09,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:09,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225958752] [2020-12-22 13:24:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:24:10,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225958752] [2020-12-22 13:24:10,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:10,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:24:10,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005896467] [2020-12-22 13:24:10,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:24:10,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:10,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:24:10,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:24:10,636 INFO L87 Difference]: Start difference. First operand 21605 states and 31610 transitions. Second operand 4 states. [2020-12-22 13:24:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:13,165 INFO L93 Difference]: Finished difference Result 107484 states and 157347 transitions. [2020-12-22 13:24:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:24:13,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-12-22 13:24:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:13,577 INFO L225 Difference]: With dead ends: 107484 [2020-12-22 13:24:13,577 INFO L226 Difference]: Without dead ends: 85928 [2020-12-22 13:24:13,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:24:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85928 states. [2020-12-22 13:24:15,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85928 to 21621. [2020-12-22 13:24:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21621 states. [2020-12-22 13:24:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21621 states to 21621 states and 31626 transitions. [2020-12-22 13:24:15,519 INFO L78 Accepts]: Start accepts. Automaton has 21621 states and 31626 transitions. Word has length 95 [2020-12-22 13:24:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:15,520 INFO L481 AbstractCegarLoop]: Abstraction has 21621 states and 31626 transitions. [2020-12-22 13:24:15,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:24:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21621 states and 31626 transitions. [2020-12-22 13:24:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 13:24:15,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:15,544 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:24:15,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:24:15,545 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:15,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:15,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1158132929, now seen corresponding path program 1 times [2020-12-22 13:24:15,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:15,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933007979] [2020-12-22 13:24:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:24:16,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933007979] [2020-12-22 13:24:16,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:16,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:24:16,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817188996] [2020-12-22 13:24:16,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:24:16,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:16,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:24:16,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:24:16,195 INFO L87 Difference]: Start difference. First operand 21621 states and 31626 transitions. Second operand 4 states. [2020-12-22 13:24:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:17,838 INFO L93 Difference]: Finished difference Result 58237 states and 85316 transitions. [2020-12-22 13:24:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:24:17,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-22 13:24:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:17,950 INFO L225 Difference]: With dead ends: 58237 [2020-12-22 13:24:17,951 INFO L226 Difference]: Without dead ends: 36665 [2020-12-22 13:24:17,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:24:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36665 states. [2020-12-22 13:24:19,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36665 to 21621. [2020-12-22 13:24:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21621 states. [2020-12-22 13:24:19,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21621 states to 21621 states and 31618 transitions. [2020-12-22 13:24:19,562 INFO L78 Accepts]: Start accepts. Automaton has 21621 states and 31618 transitions. Word has length 98 [2020-12-22 13:24:19,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:19,563 INFO L481 AbstractCegarLoop]: Abstraction has 21621 states and 31618 transitions. [2020-12-22 13:24:19,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:24:19,563 INFO L276 IsEmpty]: Start isEmpty. Operand 21621 states and 31618 transitions. [2020-12-22 13:24:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 13:24:19,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:19,577 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:24:19,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:24:19,577 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:19,578 INFO L82 PathProgramCache]: Analyzing trace with hash -137064575, now seen corresponding path program 1 times [2020-12-22 13:24:19,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:19,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204363111] [2020-12-22 13:24:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:24:20,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204363111] [2020-12-22 13:24:20,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874733884] [2020-12-22 13:24:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:24:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:23,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 5505 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:24:23,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:24:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:24:23,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:24:23,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:24:23,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133589242] [2020-12-22 13:24:23,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:24:23,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:23,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:24:23,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:24:23,693 INFO L87 Difference]: Start difference. First operand 21621 states and 31618 transitions. Second operand 6 states. [2020-12-22 13:24:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:30,234 INFO L93 Difference]: Finished difference Result 87337 states and 128304 transitions. [2020-12-22 13:24:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:24:30,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 13:24:30,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:30,434 INFO L225 Difference]: With dead ends: 87337 [2020-12-22 13:24:30,434 INFO L226 Difference]: Without dead ends: 65761 [2020-12-22 13:24:30,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:24:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65761 states. [2020-12-22 13:24:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65761 to 57895. [2020-12-22 13:24:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57895 states. [2020-12-22 13:24:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57895 states to 57895 states and 84466 transitions. [2020-12-22 13:24:33,267 INFO L78 Accepts]: Start accepts. Automaton has 57895 states and 84466 transitions. Word has length 98 [2020-12-22 13:24:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:33,268 INFO L481 AbstractCegarLoop]: Abstraction has 57895 states and 84466 transitions. [2020-12-22 13:24:33,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:24:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 57895 states and 84466 transitions. [2020-12-22 13:24:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 13:24:33,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:33,295 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:24:33,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 13:24:33,511 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:33,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:33,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2066677727, now seen corresponding path program 1 times [2020-12-22 13:24:33,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:33,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478151352] [2020-12-22 13:24:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:24:33,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478151352] [2020-12-22 13:24:33,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:33,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:24:33,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644439190] [2020-12-22 13:24:33,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:24:33,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:33,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:24:33,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:33,986 INFO L87 Difference]: Start difference. First operand 57895 states and 84466 transitions. Second operand 3 states. [2020-12-22 13:24:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:38,801 INFO L93 Difference]: Finished difference Result 128265 states and 187154 transitions. [2020-12-22 13:24:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:24:38,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-22 13:24:38,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:38,921 INFO L225 Difference]: With dead ends: 128265 [2020-12-22 13:24:38,922 INFO L226 Difference]: Without dead ends: 70421 [2020-12-22 13:24:38,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70421 states. [2020-12-22 13:24:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70421 to 70388. [2020-12-22 13:24:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70388 states. [2020-12-22 13:24:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70388 states to 70388 states and 102645 transitions. [2020-12-22 13:24:42,104 INFO L78 Accepts]: Start accepts. Automaton has 70388 states and 102645 transitions. Word has length 101 [2020-12-22 13:24:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:42,104 INFO L481 AbstractCegarLoop]: Abstraction has 70388 states and 102645 transitions. [2020-12-22 13:24:42,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:24:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 70388 states and 102645 transitions. [2020-12-22 13:24:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 13:24:42,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:42,128 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:42,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:24:42,128 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:42,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:42,129 INFO L82 PathProgramCache]: Analyzing trace with hash -48911282, now seen corresponding path program 1 times [2020-12-22 13:24:42,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:42,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414517104] [2020-12-22 13:24:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:24:42,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414517104] [2020-12-22 13:24:42,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763671268] [2020-12-22 13:24:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:24:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:45,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 5626 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:24:45,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:24:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:24:46,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:24:46,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-12-22 13:24:46,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843455379] [2020-12-22 13:24:46,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:24:46,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:46,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:24:46,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:24:46,141 INFO L87 Difference]: Start difference. First operand 70388 states and 102645 transitions. Second operand 3 states. [2020-12-22 13:24:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:49,768 INFO L93 Difference]: Finished difference Result 108576 states and 158239 transitions. [2020-12-22 13:24:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:24:49,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 13:24:49,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:49,831 INFO L225 Difference]: With dead ends: 108576 [2020-12-22 13:24:49,831 INFO L226 Difference]: Without dead ends: 38186 [2020-12-22 13:24:49,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:24:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38186 states. [2020-12-22 13:24:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38186 to 38186. [2020-12-22 13:24:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38186 states. [2020-12-22 13:24:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38186 states to 38186 states and 55520 transitions. [2020-12-22 13:24:51,655 INFO L78 Accepts]: Start accepts. Automaton has 38186 states and 55520 transitions. Word has length 108 [2020-12-22 13:24:51,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:51,655 INFO L481 AbstractCegarLoop]: Abstraction has 38186 states and 55520 transitions. [2020-12-22 13:24:51,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:24:51,655 INFO L276 IsEmpty]: Start isEmpty. Operand 38186 states and 55520 transitions. [2020-12-22 13:24:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 13:24:51,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:51,672 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:51,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:24:51,873 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:51,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:51,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1620994367, now seen corresponding path program 1 times [2020-12-22 13:24:51,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:51,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235970728] [2020-12-22 13:24:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 13:24:52,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235970728] [2020-12-22 13:24:52,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:52,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:24:52,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659280071] [2020-12-22 13:24:52,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:24:52,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:52,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:24:52,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:52,571 INFO L87 Difference]: Start difference. First operand 38186 states and 55520 transitions. Second operand 3 states. [2020-12-22 13:24:54,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:54,881 INFO L93 Difference]: Finished difference Result 95175 states and 138418 transitions. [2020-12-22 13:24:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:24:54,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-12-22 13:24:54,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:54,987 INFO L225 Difference]: With dead ends: 95175 [2020-12-22 13:24:54,987 INFO L226 Difference]: Without dead ends: 76077 [2020-12-22 13:24:55,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:24:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76077 states. [2020-12-22 13:24:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76077 to 38210. [2020-12-22 13:24:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38210 states. [2020-12-22 13:24:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38210 states to 38210 states and 55544 transitions. [2020-12-22 13:24:56,912 INFO L78 Accepts]: Start accepts. Automaton has 38210 states and 55544 transitions. Word has length 120 [2020-12-22 13:24:56,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:56,912 INFO L481 AbstractCegarLoop]: Abstraction has 38210 states and 55544 transitions. [2020-12-22 13:24:56,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:24:56,913 INFO L276 IsEmpty]: Start isEmpty. Operand 38210 states and 55544 transitions. [2020-12-22 13:24:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 13:24:56,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:56,930 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:56,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:24:56,931 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:56,931 INFO L82 PathProgramCache]: Analyzing trace with hash -62600162, now seen corresponding path program 1 times [2020-12-22 13:24:56,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:56,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867097776] [2020-12-22 13:24:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 13:24:57,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867097776] [2020-12-22 13:24:57,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:24:57,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:24:57,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360710857] [2020-12-22 13:24:57,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:24:57,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:57,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:24:57,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:24:57,684 INFO L87 Difference]: Start difference. First operand 38210 states and 55544 transitions. Second operand 4 states. [2020-12-22 13:25:01,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:01,936 INFO L93 Difference]: Finished difference Result 91349 states and 132874 transitions. [2020-12-22 13:25:01,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:25:01,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-12-22 13:25:01,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:02,008 INFO L225 Difference]: With dead ends: 91349 [2020-12-22 13:25:02,008 INFO L226 Difference]: Without dead ends: 50398 [2020-12-22 13:25:02,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:25:02,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50398 states. [2020-12-22 13:25:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50398 to 30621. [2020-12-22 13:25:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30621 states. [2020-12-22 13:25:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30621 states to 30621 states and 44621 transitions. [2020-12-22 13:25:03,547 INFO L78 Accepts]: Start accepts. Automaton has 30621 states and 44621 transitions. Word has length 122 [2020-12-22 13:25:03,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:03,547 INFO L481 AbstractCegarLoop]: Abstraction has 30621 states and 44621 transitions. [2020-12-22 13:25:03,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:25:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 30621 states and 44621 transitions. [2020-12-22 13:25:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 13:25:03,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:03,563 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:25:03,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:25:03,564 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:03,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:03,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1812294413, now seen corresponding path program 1 times [2020-12-22 13:25:03,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:03,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436822451] [2020-12-22 13:25:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:25:04,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436822451] [2020-12-22 13:25:04,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:25:04,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:25:04,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678337154] [2020-12-22 13:25:04,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:25:04,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:04,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:25:04,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:25:04,011 INFO L87 Difference]: Start difference. First operand 30621 states and 44621 transitions. Second operand 3 states. [2020-12-22 13:25:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:25:07,760 INFO L93 Difference]: Finished difference Result 62569 states and 91331 transitions. [2020-12-22 13:25:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:25:07,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-22 13:25:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:25:07,808 INFO L225 Difference]: With dead ends: 62569 [2020-12-22 13:25:07,808 INFO L226 Difference]: Without dead ends: 33084 [2020-12-22 13:25:07,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:25:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33084 states. [2020-12-22 13:25:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33084 to 33072. [2020-12-22 13:25:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33072 states. [2020-12-22 13:25:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33072 states to 33072 states and 48059 transitions. [2020-12-22 13:25:09,288 INFO L78 Accepts]: Start accepts. Automaton has 33072 states and 48059 transitions. Word has length 124 [2020-12-22 13:25:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:25:09,288 INFO L481 AbstractCegarLoop]: Abstraction has 33072 states and 48059 transitions. [2020-12-22 13:25:09,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:25:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 33072 states and 48059 transitions. [2020-12-22 13:25:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 13:25:09,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:25:09,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:25:09,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 13:25:09,298 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:25:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:25:09,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2108652301, now seen corresponding path program 2 times [2020-12-22 13:25:09,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:25:09,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462972236] [2020-12-22 13:25:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:25:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:25:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 13:25:10,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462972236] [2020-12-22 13:25:10,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196298876] [2020-12-22 13:25:10,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true