/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-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:48:57,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:48:57,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:48:57,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:48:57,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:48:57,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:48:57,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:48:57,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:48:57,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:48:57,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:48:57,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:48:57,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:48:57,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:48:57,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:48:57,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:48:57,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:48:57,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:48:57,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:48:57,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:48:57,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:48:57,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:48:57,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:48:57,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:48:57,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:48:57,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:48:57,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:48:57,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:48:57,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:48:57,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:48:57,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:48:57,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:48:57,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:48:57,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:48:57,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:48:57,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:48:57,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:48:57,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:48:57,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:48:57,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:48:57,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:48:57,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:48:57,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:48:57,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:48:57,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:48:57,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:48:57,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:48:57,367 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:48:57,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:48:57,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:48:57,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:48:57,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:48:57,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:48:57,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:48:57,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:48:57,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:48:57,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:48:57,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:48:57,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:48:57,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:48:57,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:48:57,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:48:57,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:48:57,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:48:57,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:48:57,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:48:57,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:48:57,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:48:57,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:48:57,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:48:57,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:48:57,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:48:57,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:48:57,810 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:48:57,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:48:57,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/530d1f41a/d5867a83b265483ab49269a4b13119aa/FLAG54b1664ef [2020-12-22 13:48:58,961 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:48:58,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:48:59,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/530d1f41a/d5867a83b265483ab49269a4b13119aa/FLAG54b1664ef [2020-12-22 13:48:59,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/530d1f41a/d5867a83b265483ab49269a4b13119aa [2020-12-22 13:48:59,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:48:59,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:48:59,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:48:59,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:48:59,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:48:59,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:48:59" (1/1) ... [2020-12-22 13:48:59,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2217d51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:59, skipping insertion in model container [2020-12-22 13:48:59,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:48:59" (1/1) ... [2020-12-22 13:48:59,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:48:59,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:49:01,084 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-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2020-12-22 13:49:01,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:01,215 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:49:01,544 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-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2020-12-22 13:49:01,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:01,909 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:49:01,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01 WrapperNode [2020-12-22 13:49:01,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:49:01,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:01,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:49:01,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:49:01,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (1/1) ... [2020-12-22 13:49:02,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (1/1) ... [2020-12-22 13:49:02,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:02,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:49:02,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:49:02,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:49:02,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (1/1) ... [2020-12-22 13:49:02,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (1/1) ... [2020-12-22 13:49:02,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (1/1) ... [2020-12-22 13:49:02,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (1/1) ... [2020-12-22 13:49:03,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (1/1) ... [2020-12-22 13:49:03,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (1/1) ... [2020-12-22 13:49:03,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (1/1) ... [2020-12-22 13:49:03,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:49:03,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:49:03,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:49:03,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:49:03,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (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 13:49:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:49:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:49:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:49:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:49:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:49:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:49:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:49:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:49:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:49:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:49:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:49:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:49:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:49:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:49:03,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:49:17,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:49:17,740 INFO L299 CfgBuilder]: Removed 2531 assume(true) statements. [2020-12-22 13:49:17,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:17 BoogieIcfgContainer [2020-12-22 13:49:17,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:49:17,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:49:17,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:49:17,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:49:17,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:48:59" (1/3) ... [2020-12-22 13:49:17,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b70b793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:17, skipping insertion in model container [2020-12-22 13:49:17,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:01" (2/3) ... [2020-12-22 13:49:17,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b70b793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:17, skipping insertion in model container [2020-12-22 13:49:17,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:17" (3/3) ... [2020-12-22 13:49:17,756 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:17,763 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:49:17,771 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 13:49:17,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 13:49:17,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:49:17,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:49:17,832 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:49:17,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:49:17,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:49:17,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:49:17,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:49:17,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:49:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states. [2020-12-22 13:49:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 13:49:18,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:18,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:18,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:18,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:18,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1906996444, now seen corresponding path program 1 times [2020-12-22 13:49:18,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:18,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892271730] [2020-12-22 13:49:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:19,153 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 13:49:19,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892271730] [2020-12-22 13:49:19,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:19,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:19,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958091634] [2020-12-22 13:49:19,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:49:19,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:19,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:49:19,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:49:19,184 INFO L87 Difference]: Start difference. First operand 2867 states. Second operand 2 states. [2020-12-22 13:49:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:19,402 INFO L93 Difference]: Finished difference Result 5730 states and 8183 transitions. [2020-12-22 13:49:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:49:19,404 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2020-12-22 13:49:19,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:19,439 INFO L225 Difference]: With dead ends: 5730 [2020-12-22 13:49:19,440 INFO L226 Difference]: Without dead ends: 2852 [2020-12-22 13:49:19,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:49:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-12-22 13:49:19,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2852. [2020-12-22 13:49:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2852 states. [2020-12-22 13:49:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4047 transitions. [2020-12-22 13:49:19,664 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4047 transitions. Word has length 148 [2020-12-22 13:49:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:19,664 INFO L481 AbstractCegarLoop]: Abstraction has 2852 states and 4047 transitions. [2020-12-22 13:49:19,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:49:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4047 transitions. [2020-12-22 13:49:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 13:49:19,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:19,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:19,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:49:19,676 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:19,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:19,677 INFO L82 PathProgramCache]: Analyzing trace with hash 267116844, now seen corresponding path program 1 times [2020-12-22 13:49:19,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:19,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123233986] [2020-12-22 13:49:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:20,508 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 13:49:20,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123233986] [2020-12-22 13:49:20,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:20,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:20,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679833117] [2020-12-22 13:49:20,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:20,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:20,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:20,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:20,514 INFO L87 Difference]: Start difference. First operand 2852 states and 4047 transitions. Second operand 3 states. [2020-12-22 13:49:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:21,036 INFO L93 Difference]: Finished difference Result 5784 states and 8213 transitions. [2020-12-22 13:49:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:21,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-22 13:49:21,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:21,058 INFO L225 Difference]: With dead ends: 5784 [2020-12-22 13:49:21,059 INFO L226 Difference]: Without dead ends: 3068 [2020-12-22 13:49:21,068 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 13:49:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2020-12-22 13:49:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2020-12-22 13:49:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3068 states. [2020-12-22 13:49:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4340 transitions. [2020-12-22 13:49:21,166 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4340 transitions. Word has length 148 [2020-12-22 13:49:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:21,170 INFO L481 AbstractCegarLoop]: Abstraction has 3068 states and 4340 transitions. [2020-12-22 13:49:21,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4340 transitions. [2020-12-22 13:49:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 13:49:21,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:21,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:21,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:49:21,175 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash -416763270, now seen corresponding path program 1 times [2020-12-22 13:49:21,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:21,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549950958] [2020-12-22 13:49:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:21,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549950958] [2020-12-22 13:49:21,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:21,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:21,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796216725] [2020-12-22 13:49:21,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:21,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:21,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:21,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:21,921 INFO L87 Difference]: Start difference. First operand 3068 states and 4340 transitions. Second operand 3 states. [2020-12-22 13:49:22,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:22,089 INFO L93 Difference]: Finished difference Result 6000 states and 8505 transitions. [2020-12-22 13:49:22,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:22,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-12-22 13:49:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:22,118 INFO L225 Difference]: With dead ends: 6000 [2020-12-22 13:49:22,119 INFO L226 Difference]: Without dead ends: 3068 [2020-12-22 13:49:22,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:49:22,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2020-12-22 13:49:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2020-12-22 13:49:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3068 states. [2020-12-22 13:49:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4338 transitions. [2020-12-22 13:49:22,395 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4338 transitions. Word has length 160 [2020-12-22 13:49:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:22,396 INFO L481 AbstractCegarLoop]: Abstraction has 3068 states and 4338 transitions. [2020-12-22 13:49:22,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4338 transitions. [2020-12-22 13:49:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-12-22 13:49:22,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:22,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:22,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:49:22,400 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:22,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:22,401 INFO L82 PathProgramCache]: Analyzing trace with hash 15644118, now seen corresponding path program 1 times [2020-12-22 13:49:22,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:22,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130682521] [2020-12-22 13:49:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:22,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130682521] [2020-12-22 13:49:22,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:22,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:22,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130607212] [2020-12-22 13:49:22,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:22,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:22,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:22,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:22,970 INFO L87 Difference]: Start difference. First operand 3068 states and 4338 transitions. Second operand 4 states. [2020-12-22 13:49:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:23,543 INFO L93 Difference]: Finished difference Result 6006 states and 8509 transitions. [2020-12-22 13:49:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:23,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-12-22 13:49:23,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:23,565 INFO L225 Difference]: With dead ends: 6006 [2020-12-22 13:49:23,566 INFO L226 Difference]: Without dead ends: 3068 [2020-12-22 13:49:23,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:49:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2020-12-22 13:49:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2020-12-22 13:49:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3068 states. [2020-12-22 13:49:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4336 transitions. [2020-12-22 13:49:23,756 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4336 transitions. Word has length 162 [2020-12-22 13:49:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:23,757 INFO L481 AbstractCegarLoop]: Abstraction has 3068 states and 4336 transitions. [2020-12-22 13:49:23,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4336 transitions. [2020-12-22 13:49:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 13:49:23,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:23,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:23,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:49:23,763 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:23,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1424296417, now seen corresponding path program 1 times [2020-12-22 13:49:23,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:23,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688443901] [2020-12-22 13:49:23,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:24,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688443901] [2020-12-22 13:49:24,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:24,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:24,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189159277] [2020-12-22 13:49:24,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:24,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:24,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:24,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:24,293 INFO L87 Difference]: Start difference. First operand 3068 states and 4336 transitions. Second operand 4 states. [2020-12-22 13:49:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:24,504 INFO L93 Difference]: Finished difference Result 6004 states and 8501 transitions. [2020-12-22 13:49:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:24,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-12-22 13:49:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:24,523 INFO L225 Difference]: With dead ends: 6004 [2020-12-22 13:49:24,523 INFO L226 Difference]: Without dead ends: 3062 [2020-12-22 13:49:24,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:49:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2020-12-22 13:49:24,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3062. [2020-12-22 13:49:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2020-12-22 13:49:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4322 transitions. [2020-12-22 13:49:24,638 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4322 transitions. Word has length 165 [2020-12-22 13:49:24,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:24,638 INFO L481 AbstractCegarLoop]: Abstraction has 3062 states and 4322 transitions. [2020-12-22 13:49:24,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4322 transitions. [2020-12-22 13:49:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-12-22 13:49:24,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:24,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:24,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:49:24,642 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:24,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:24,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1942839939, now seen corresponding path program 1 times [2020-12-22 13:49:24,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:24,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135433599] [2020-12-22 13:49:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:25,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135433599] [2020-12-22 13:49:25,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:25,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:25,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117418708] [2020-12-22 13:49:25,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:25,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:25,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:25,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:25,182 INFO L87 Difference]: Start difference. First operand 3062 states and 4322 transitions. Second operand 3 states. [2020-12-22 13:49:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:25,494 INFO L93 Difference]: Finished difference Result 6016 states and 8507 transitions. [2020-12-22 13:49:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:25,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2020-12-22 13:49:25,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:25,511 INFO L225 Difference]: With dead ends: 6016 [2020-12-22 13:49:25,512 INFO L226 Difference]: Without dead ends: 3090 [2020-12-22 13:49:25,518 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 13:49:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2020-12-22 13:49:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 3064. [2020-12-22 13:49:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3064 states. [2020-12-22 13:49:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4324 transitions. [2020-12-22 13:49:25,644 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4324 transitions. Word has length 207 [2020-12-22 13:49:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:25,644 INFO L481 AbstractCegarLoop]: Abstraction has 3064 states and 4324 transitions. [2020-12-22 13:49:25,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4324 transitions. [2020-12-22 13:49:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 13:49:25,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:25,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:25,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:49:25,650 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:25,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:25,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1837808091, now seen corresponding path program 1 times [2020-12-22 13:49:25,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:25,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780196236] [2020-12-22 13:49:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:26,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780196236] [2020-12-22 13:49:26,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654280117] [2020-12-22 13:49:26,230 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 13:49:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:27,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 7757 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:49:28,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:28,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:49:28,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 13:49:28,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631376357] [2020-12-22 13:49:28,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:28,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:28,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:28,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:28,355 INFO L87 Difference]: Start difference. First operand 3064 states and 4324 transitions. Second operand 5 states. [2020-12-22 13:49:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:28,688 INFO L93 Difference]: Finished difference Result 6046 states and 8545 transitions. [2020-12-22 13:49:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:28,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-12-22 13:49:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:28,708 INFO L225 Difference]: With dead ends: 6046 [2020-12-22 13:49:28,709 INFO L226 Difference]: Without dead ends: 3118 [2020-12-22 13:49:28,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2020-12-22 13:49:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 3092. [2020-12-22 13:49:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3092 states. [2020-12-22 13:49:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4360 transitions. [2020-12-22 13:49:28,855 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4360 transitions. Word has length 215 [2020-12-22 13:49:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:28,856 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 4360 transitions. [2020-12-22 13:49:28,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:49:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4360 transitions. [2020-12-22 13:49:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-12-22 13:49:28,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:28,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:29,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 13:49:29,075 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:29,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:29,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1819854541, now seen corresponding path program 2 times [2020-12-22 13:49:29,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:29,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5551638] [2020-12-22 13:49:29,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 13:49:29,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5551638] [2020-12-22 13:49:29,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:29,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:29,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102469861] [2020-12-22 13:49:29,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:29,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:29,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:29,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:29,740 INFO L87 Difference]: Start difference. First operand 3092 states and 4360 transitions. Second operand 3 states. [2020-12-22 13:49:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:32,875 INFO L93 Difference]: Finished difference Result 5851 states and 8285 transitions. [2020-12-22 13:49:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:32,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2020-12-22 13:49:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:32,896 INFO L225 Difference]: With dead ends: 5851 [2020-12-22 13:49:32,896 INFO L226 Difference]: Without dead ends: 2877 [2020-12-22 13:49:32,904 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 13:49:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-12-22 13:49:33,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2877. [2020-12-22 13:49:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2877 states. [2020-12-22 13:49:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4072 transitions. [2020-12-22 13:49:33,083 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4072 transitions. Word has length 223 [2020-12-22 13:49:33,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:33,084 INFO L481 AbstractCegarLoop]: Abstraction has 2877 states and 4072 transitions. [2020-12-22 13:49:33,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:33,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4072 transitions. [2020-12-22 13:49:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 13:49:33,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:33,088 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:33,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:49:33,088 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1739824914, now seen corresponding path program 1 times [2020-12-22 13:49:33,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:33,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499016000] [2020-12-22 13:49:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:34,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499016000] [2020-12-22 13:49:34,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547487132] [2020-12-22 13:49:34,040 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 13:49:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:35,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 7809 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:49:35,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:36,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:49:36,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 13:49:36,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533381299] [2020-12-22 13:49:36,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:49:36,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:36,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:49:36,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:49:36,278 INFO L87 Difference]: Start difference. First operand 2877 states and 4072 transitions. Second operand 6 states. [2020-12-22 13:49:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:36,528 INFO L93 Difference]: Finished difference Result 5502 states and 7818 transitions. [2020-12-22 13:49:36,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:36,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 225 [2020-12-22 13:49:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:36,561 INFO L225 Difference]: With dead ends: 5502 [2020-12-22 13:49:36,561 INFO L226 Difference]: Without dead ends: 2904 [2020-12-22 13:49:36,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:49:36,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-12-22 13:49:36,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2891. [2020-12-22 13:49:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2891 states. [2020-12-22 13:49:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 4090 transitions. [2020-12-22 13:49:36,745 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 4090 transitions. Word has length 225 [2020-12-22 13:49:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:36,745 INFO L481 AbstractCegarLoop]: Abstraction has 2891 states and 4090 transitions. [2020-12-22 13:49:36,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:49:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 4090 transitions. [2020-12-22 13:49:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 13:49:36,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:36,749 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:36,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:49:36,963 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:36,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:36,963 INFO L82 PathProgramCache]: Analyzing trace with hash 378769990, now seen corresponding path program 2 times [2020-12-22 13:49:36,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:36,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082038881] [2020-12-22 13:49:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:37,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082038881] [2020-12-22 13:49:37,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915581123] [2020-12-22 13:49:37,815 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 [2020-12-22 13:49:44,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:49:44,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:49:44,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 7325 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 13:49:44,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-22 13:49:44,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:49:44,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-12-22 13:49:44,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113937108] [2020-12-22 13:49:44,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:44,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:44,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:44,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:49:44,557 INFO L87 Difference]: Start difference. First operand 2891 states and 4090 transitions. Second operand 3 states. [2020-12-22 13:49:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:45,067 INFO L93 Difference]: Finished difference Result 5801 states and 8237 transitions. [2020-12-22 13:49:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:45,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-22 13:49:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:45,077 INFO L225 Difference]: With dead ends: 5801 [2020-12-22 13:49:45,078 INFO L226 Difference]: Without dead ends: 2930 [2020-12-22 13:49:45,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:49:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-12-22 13:49:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2930. [2020-12-22 13:49:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2020-12-22 13:49:45,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4129 transitions. [2020-12-22 13:49:45,387 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4129 transitions. Word has length 233 [2020-12-22 13:49:45,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:45,387 INFO L481 AbstractCegarLoop]: Abstraction has 2930 states and 4129 transitions. [2020-12-22 13:49:45,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4129 transitions. [2020-12-22 13:49:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-12-22 13:49:45,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:45,392 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:45,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 13:49:45,607 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:45,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1464939486, now seen corresponding path program 1 times [2020-12-22 13:49:45,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:45,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930164826] [2020-12-22 13:49:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:49:46,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930164826] [2020-12-22 13:49:46,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591439383] [2020-12-22 13:49:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:49:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:48,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 8088 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:49:48,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:49:48,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:49:48,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 13:49:48,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103370995] [2020-12-22 13:49:48,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:49:48,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:48,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:49:48,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:49:48,526 INFO L87 Difference]: Start difference. First operand 2930 states and 4129 transitions. Second operand 7 states. [2020-12-22 13:49:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:48,790 INFO L93 Difference]: Finished difference Result 5555 states and 7875 transitions. [2020-12-22 13:49:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:49:48,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-12-22 13:49:48,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:48,801 INFO L225 Difference]: With dead ends: 5555 [2020-12-22 13:49:48,801 INFO L226 Difference]: Without dead ends: 2957 [2020-12-22 13:49:48,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:49:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-12-22 13:49:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2944. [2020-12-22 13:49:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2944 states. [2020-12-22 13:49:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 4147 transitions. [2020-12-22 13:49:48,978 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 4147 transitions. Word has length 272 [2020-12-22 13:49:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:48,979 INFO L481 AbstractCegarLoop]: Abstraction has 2944 states and 4147 transitions. [2020-12-22 13:49:48,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:49:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 4147 transitions. [2020-12-22 13:49:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-12-22 13:49:48,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:48,985 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:49,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:49:49,199 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:49,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:49,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1261537994, now seen corresponding path program 2 times [2020-12-22 13:49:49,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:49,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409845302] [2020-12-22 13:49:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:49:50,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409845302] [2020-12-22 13:49:50,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914848857] [2020-12-22 13:49:50,008 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:49:57,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:49:57,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:49:57,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 7325 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 13:49:57,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-12-22 13:49:58,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:49:58,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-12-22 13:49:58,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065503687] [2020-12-22 13:49:58,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:58,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:58,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:58,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:49:58,276 INFO L87 Difference]: Start difference. First operand 2944 states and 4147 transitions. Second operand 3 states. [2020-12-22 13:49:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:58,625 INFO L93 Difference]: Finished difference Result 5333 states and 7587 transitions. [2020-12-22 13:49:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:58,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 280 [2020-12-22 13:49:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:58,640 INFO L225 Difference]: With dead ends: 5333 [2020-12-22 13:49:58,640 INFO L226 Difference]: Without dead ends: 5329 [2020-12-22 13:49:58,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:49:58,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2020-12-22 13:49:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 2940. [2020-12-22 13:49:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2940 states. [2020-12-22 13:49:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 4143 transitions. [2020-12-22 13:49:58,837 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 4143 transitions. Word has length 280 [2020-12-22 13:49:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:58,838 INFO L481 AbstractCegarLoop]: Abstraction has 2940 states and 4143 transitions. [2020-12-22 13:49:58,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 4143 transitions. [2020-12-22 13:49:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-12-22 13:49:58,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:58,844 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:59,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 13:49:59,045 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:59,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1623761860, now seen corresponding path program 1 times [2020-12-22 13:49:59,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:59,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698155173] [2020-12-22 13:49:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:49:59,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698155173] [2020-12-22 13:49:59,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445961858] [2020-12-22 13:49:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:01,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 8165 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 13:50:01,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:50:01,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:01,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 13:50:01,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929125406] [2020-12-22 13:50:01,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:50:01,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:01,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:50:01,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:50:01,962 INFO L87 Difference]: Start difference. First operand 2940 states and 4143 transitions. Second operand 8 states. [2020-12-22 13:50:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:02,199 INFO L93 Difference]: Finished difference Result 5561 states and 7885 transitions. [2020-12-22 13:50:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:50:02,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 284 [2020-12-22 13:50:02,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:02,207 INFO L225 Difference]: With dead ends: 5561 [2020-12-22 13:50:02,208 INFO L226 Difference]: Without dead ends: 2967 [2020-12-22 13:50:02,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:50:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-12-22 13:50:02,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2954. [2020-12-22 13:50:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2954 states. [2020-12-22 13:50:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 4161 transitions. [2020-12-22 13:50:02,382 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 4161 transitions. Word has length 284 [2020-12-22 13:50:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:02,383 INFO L481 AbstractCegarLoop]: Abstraction has 2954 states and 4161 transitions. [2020-12-22 13:50:02,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:50:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 4161 transitions. [2020-12-22 13:50:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-12-22 13:50:02,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:02,390 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:02,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:02,604 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:02,606 INFO L82 PathProgramCache]: Analyzing trace with hash -354068076, now seen corresponding path program 2 times [2020-12-22 13:50:02,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:02,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656311356] [2020-12-22 13:50:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:50:03,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656311356] [2020-12-22 13:50:03,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438413187] [2020-12-22 13:50:03,718 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:05,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:50:05,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:50:05,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 7357 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:50:05,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-12-22 13:50:05,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:50:05,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2020-12-22 13:50:05,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747545848] [2020-12-22 13:50:05,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:05,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:05,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:05,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:50:05,468 INFO L87 Difference]: Start difference. First operand 2954 states and 4161 transitions. Second operand 3 states. [2020-12-22 13:50:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:05,787 INFO L93 Difference]: Finished difference Result 5303 states and 7539 transitions. [2020-12-22 13:50:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:05,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 292 [2020-12-22 13:50:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:05,804 INFO L225 Difference]: With dead ends: 5303 [2020-12-22 13:50:05,804 INFO L226 Difference]: Without dead ends: 5291 [2020-12-22 13:50:05,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:50:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2020-12-22 13:50:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 2942. [2020-12-22 13:50:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2942 states. [2020-12-22 13:50:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 4149 transitions. [2020-12-22 13:50:05,996 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 4149 transitions. Word has length 292 [2020-12-22 13:50:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:05,996 INFO L481 AbstractCegarLoop]: Abstraction has 2942 states and 4149 transitions. [2020-12-22 13:50:05,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 4149 transitions. [2020-12-22 13:50:06,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-12-22 13:50:06,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:06,003 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:06,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 13:50:06,217 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:06,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:06,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1003950226, now seen corresponding path program 1 times [2020-12-22 13:50:06,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:06,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905254751] [2020-12-22 13:50:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:50:07,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905254751] [2020-12-22 13:50:07,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321442319] [2020-12-22 13:50:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:08,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 8203 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 13:50:08,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:50:09,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:09,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 13:50:09,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078294834] [2020-12-22 13:50:09,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 13:50:09,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:09,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 13:50:09,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:50:09,127 INFO L87 Difference]: Start difference. First operand 2942 states and 4149 transitions. Second operand 9 states. [2020-12-22 13:50:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:09,346 INFO L93 Difference]: Finished difference Result 5551 states and 7879 transitions. [2020-12-22 13:50:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:50:09,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 297 [2020-12-22 13:50:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:09,356 INFO L225 Difference]: With dead ends: 5551 [2020-12-22 13:50:09,356 INFO L226 Difference]: Without dead ends: 2969 [2020-12-22 13:50:09,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:50:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-12-22 13:50:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2956. [2020-12-22 13:50:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2956 states. [2020-12-22 13:50:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 4167 transitions. [2020-12-22 13:50:09,537 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 4167 transitions. Word has length 297 [2020-12-22 13:50:09,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:09,538 INFO L481 AbstractCegarLoop]: Abstraction has 2956 states and 4167 transitions. [2020-12-22 13:50:09,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 13:50:09,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 4167 transitions. [2020-12-22 13:50:09,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-12-22 13:50:09,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:09,545 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:09,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 13:50:09,760 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:09,761 INFO L82 PathProgramCache]: Analyzing trace with hash -439778758, now seen corresponding path program 2 times [2020-12-22 13:50:09,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:09,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119234253] [2020-12-22 13:50:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:50:10,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119234253] [2020-12-22 13:50:10,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932041286] [2020-12-22 13:50:10,613 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:25,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:50:25,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:50:26,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 8248 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 13:50:26,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:50:26,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:26,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-22 13:50:26,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728786952] [2020-12-22 13:50:26,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 13:50:26,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:26,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 13:50:26,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:50:26,312 INFO L87 Difference]: Start difference. First operand 2956 states and 4167 transitions. Second operand 10 states. [2020-12-22 13:50:26,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:26,566 INFO L93 Difference]: Finished difference Result 5565 states and 7897 transitions. [2020-12-22 13:50:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:50:26,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 305 [2020-12-22 13:50:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:26,578 INFO L225 Difference]: With dead ends: 5565 [2020-12-22 13:50:26,578 INFO L226 Difference]: Without dead ends: 2983 [2020-12-22 13:50:26,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:50:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-12-22 13:50:26,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2970. [2020-12-22 13:50:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2020-12-22 13:50:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4185 transitions. [2020-12-22 13:50:26,734 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4185 transitions. Word has length 305 [2020-12-22 13:50:26,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:26,735 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4185 transitions. [2020-12-22 13:50:26,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 13:50:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4185 transitions. [2020-12-22 13:50:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-12-22 13:50:26,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:26,739 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:26,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 13:50:26,954 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:26,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:26,955 INFO L82 PathProgramCache]: Analyzing trace with hash -6042654, now seen corresponding path program 3 times [2020-12-22 13:50:26,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:26,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824474538] [2020-12-22 13:50:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 175 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:50:27,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824474538] [2020-12-22 13:50:27,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606988813] [2020-12-22 13:50:27,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:55,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:50:55,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:50:55,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 7978 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 13:50:55,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-12-22 13:50:56,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:50:56,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2020-12-22 13:50:56,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156434889] [2020-12-22 13:50:56,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:50:56,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:56,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:50:56,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:50:56,543 INFO L87 Difference]: Start difference. First operand 2970 states and 4185 transitions. Second operand 7 states. [2020-12-22 13:50:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:59,080 INFO L93 Difference]: Finished difference Result 8510 states and 12060 transitions. [2020-12-22 13:50:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:50:59,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-12-22 13:50:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:59,099 INFO L225 Difference]: With dead ends: 8510 [2020-12-22 13:50:59,100 INFO L226 Difference]: Without dead ends: 5733 [2020-12-22 13:50:59,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-12-22 13:50:59,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5733 states. [2020-12-22 13:50:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5733 to 2970. [2020-12-22 13:50:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2020-12-22 13:50:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4184 transitions. [2020-12-22 13:50:59,345 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4184 transitions. Word has length 313 [2020-12-22 13:50:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:59,345 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4184 transitions. [2020-12-22 13:50:59,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:50:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4184 transitions. [2020-12-22 13:50:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-12-22 13:50:59,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:59,351 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:59,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 13:50:59,552 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:59,553 INFO L82 PathProgramCache]: Analyzing trace with hash 251387782, now seen corresponding path program 1 times [2020-12-22 13:50:59,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:59,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996547270] [2020-12-22 13:50:59,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 175 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:51:00,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996547270] [2020-12-22 13:51:00,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938979658] [2020-12-22 13:51:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:51:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:02,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 8315 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 13:51:02,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:51:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 175 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:51:02,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:51:02,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-22 13:51:02,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792917708] [2020-12-22 13:51:02,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 13:51:02,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:51:02,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 13:51:02,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:51:02,436 INFO L87 Difference]: Start difference. First operand 2970 states and 4184 transitions. Second operand 11 states. [2020-12-22 13:51:02,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:51:02,650 INFO L93 Difference]: Finished difference Result 5579 states and 7914 transitions. [2020-12-22 13:51:02,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:51:02,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 315 [2020-12-22 13:51:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:51:02,661 INFO L225 Difference]: With dead ends: 5579 [2020-12-22 13:51:02,661 INFO L226 Difference]: Without dead ends: 2997 [2020-12-22 13:51:02,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:51:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-12-22 13:51:02,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2984. [2020-12-22 13:51:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2984 states. [2020-12-22 13:51:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 4202 transitions. [2020-12-22 13:51:02,875 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 4202 transitions. Word has length 315 [2020-12-22 13:51:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:51:02,876 INFO L481 AbstractCegarLoop]: Abstraction has 2984 states and 4202 transitions. [2020-12-22 13:51:02,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 13:51:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 4202 transitions. [2020-12-22 13:51:02,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-12-22 13:51:02,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:51:02,881 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:03,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 13:51:03,094 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:51:03,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:51:03,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1216733906, now seen corresponding path program 2 times [2020-12-22 13:51:03,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:51:03,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804660898] [2020-12-22 13:51:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:51:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 2 proven. 232 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:51:03,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804660898] [2020-12-22 13:51:03,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008161510] [2020-12-22 13:51:03,966 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:51:14,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:51:14,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:51:14,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 8360 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 13:51:14,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:51:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 2 proven. 232 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 13:51:15,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:51:15,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-22 13:51:15,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81625952] [2020-12-22 13:51:15,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 13:51:15,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:51:15,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 13:51:15,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:51:15,245 INFO L87 Difference]: Start difference. First operand 2984 states and 4202 transitions. Second operand 12 states. [2020-12-22 13:51:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:51:15,512 INFO L93 Difference]: Finished difference Result 5580 states and 7915 transitions. [2020-12-22 13:51:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 13:51:15,513 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 323 [2020-12-22 13:51:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:51:15,518 INFO L225 Difference]: With dead ends: 5580 [2020-12-22 13:51:15,519 INFO L226 Difference]: Without dead ends: 2998 [2020-12-22 13:51:15,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:51:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-12-22 13:51:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2998. [2020-12-22 13:51:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2998 states. [2020-12-22 13:51:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4220 transitions. [2020-12-22 13:51:15,827 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4220 transitions. Word has length 323 [2020-12-22 13:51:15,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:51:15,828 INFO L481 AbstractCegarLoop]: Abstraction has 2998 states and 4220 transitions. [2020-12-22 13:51:15,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 13:51:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4220 transitions. [2020-12-22 13:51:15,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-12-22 13:51:15,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:51:15,832 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:16,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:51:16,049 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:51:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:51:16,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1655426346, now seen corresponding path program 3 times [2020-12-22 13:51:16,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:51:16,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277943227] [2020-12-22 13:51:16,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:51:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-12-22 13:51:16,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277943227] [2020-12-22 13:51:16,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:51:16,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:51:16,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316973960] [2020-12-22 13:51:16,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:51:16,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:51:16,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:51:16,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:51:16,856 INFO L87 Difference]: Start difference. First operand 2998 states and 4220 transitions. Second operand 5 states. [2020-12-22 13:51:17,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:51:17,259 INFO L93 Difference]: Finished difference Result 8525 states and 12077 transitions. [2020-12-22 13:51:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:51:17,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-12-22 13:51:17,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:51:17,269 INFO L225 Difference]: With dead ends: 8525 [2020-12-22 13:51:17,270 INFO L226 Difference]: Without dead ends: 5731 [2020-12-22 13:51:17,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 13:51:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5731 states. [2020-12-22 13:51:17,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5731 to 2998. [2020-12-22 13:51:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2998 states. [2020-12-22 13:51:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4219 transitions. [2020-12-22 13:51:17,522 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4219 transitions. Word has length 331 [2020-12-22 13:51:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:51:17,522 INFO L481 AbstractCegarLoop]: Abstraction has 2998 states and 4219 transitions. [2020-12-22 13:51:17,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:51:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4219 transitions. [2020-12-22 13:51:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-12-22 13:51:17,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:51:17,526 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:17,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 13:51:17,527 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:51:17,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:51:17,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1111730830, now seen corresponding path program 1 times [2020-12-22 13:51:17,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:51:17,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513149332] [2020-12-22 13:51:17,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:51:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-12-22 13:51:20,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513149332] [2020-12-22 13:51:20,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098750395] [2020-12-22 13:51:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:51:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:28,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 8427 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 13:51:28,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:51:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-12-22 13:51:29,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:51:29,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:51:29,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492892302] [2020-12-22 13:51:29,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:51:29,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:51:29,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:51:29,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:51:29,218 INFO L87 Difference]: Start difference. First operand 2998 states and 4219 transitions. Second operand 6 states. [2020-12-22 13:51:29,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:51:29,981 INFO L93 Difference]: Finished difference Result 6014 states and 8494 transitions. [2020-12-22 13:51:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:51:29,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 333 [2020-12-22 13:51:29,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:51:29,986 INFO L225 Difference]: With dead ends: 6014 [2020-12-22 13:51:29,987 INFO L226 Difference]: Without dead ends: 3037 [2020-12-22 13:51:29,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:51:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2020-12-22 13:51:30,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 3037. [2020-12-22 13:51:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3037 states. [2020-12-22 13:51:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4258 transitions. [2020-12-22 13:51:30,285 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4258 transitions. Word has length 333 [2020-12-22 13:51:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:51:30,285 INFO L481 AbstractCegarLoop]: Abstraction has 3037 states and 4258 transitions. [2020-12-22 13:51:30,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:51:30,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4258 transitions. [2020-12-22 13:51:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-12-22 13:51:30,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:51:30,291 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:30,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 13:51:30,492 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:51:30,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:51:30,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1998465290, now seen corresponding path program 2 times [2020-12-22 13:51:30,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:51:30,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815571097] [2020-12-22 13:51:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:51:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2020-12-22 13:51:32,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815571097] [2020-12-22 13:51:32,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103042606] [2020-12-22 13:51:32,149 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:52:08,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:52:08,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:52:08,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 8661 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 13:52:08,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:52:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2020-12-22 13:52:08,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:52:08,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:52:08,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57998279] [2020-12-22 13:52:08,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:52:08,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:52:08,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:52:08,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:52:08,601 INFO L87 Difference]: Start difference. First operand 3037 states and 4258 transitions. Second operand 8 states. [2020-12-22 13:52:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:52:09,585 INFO L93 Difference]: Finished difference Result 6091 states and 8571 transitions. [2020-12-22 13:52:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:52:09,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 372 [2020-12-22 13:52:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:52:09,591 INFO L225 Difference]: With dead ends: 6091 [2020-12-22 13:52:09,591 INFO L226 Difference]: Without dead ends: 3076 [2020-12-22 13:52:09,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:52:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2020-12-22 13:52:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3076. [2020-12-22 13:52:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3076 states. [2020-12-22 13:52:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 4297 transitions. [2020-12-22 13:52:09,796 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 4297 transitions. Word has length 372 [2020-12-22 13:52:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:52:09,796 INFO L481 AbstractCegarLoop]: Abstraction has 3076 states and 4297 transitions. [2020-12-22 13:52:09,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:52:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 4297 transitions. [2020-12-22 13:52:09,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-12-22 13:52:09,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:52:09,800 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:10,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:52:10,001 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:52:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:52:10,002 INFO L82 PathProgramCache]: Analyzing trace with hash 95033970, now seen corresponding path program 3 times [2020-12-22 13:52:10,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:52:10,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330428441] [2020-12-22 13:52:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:52:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:52:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-12-22 13:52:12,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330428441] [2020-12-22 13:52:12,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498498300] [2020-12-22 13:52:12,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true