/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/product-lines/elevator_spec13_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:53:43,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:53:43,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:53:43,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:53:43,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:53:43,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:53:43,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:53:43,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:53:43,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:53:43,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:53:43,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:53:43,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:53:43,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:53:43,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:53:43,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:53:43,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:53:43,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:53:43,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:53:43,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:53:43,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:53:43,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:53:43,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:53:43,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:53:43,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:53:43,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 05:53:43,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 05:53:43,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 05:53:43,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 05:53:43,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 05:53:43,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 05:53:43,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:53:43,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:53:43,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:53:43,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:53:43,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:53:43,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:53:43,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:53:43,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:53:43,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:53:43,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:53:43,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:53:43,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:53:43,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:53:43,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:53:43,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:53:43,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:53:43,172 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:53:43,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:53:43,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:53:43,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:53:43,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:53:43,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:53:43,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:53:43,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:53:43,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:53:43,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:53:43,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:53:43,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:53:43,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:53:43,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:53:43,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:53:43,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:53:43,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:53:43,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:53:43,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:53:43,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:53:43,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:53:43,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:53:43,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:53:43,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:53:43,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:53:43,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:53:43,591 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:53:43,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2020-12-22 05:53:43,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e3f5e77/65118d8901c343329c2f01f085ff79b4/FLAGf9462c63d [2020-12-22 05:53:44,591 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:53:44,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2020-12-22 05:53:44,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e3f5e77/65118d8901c343329c2f01f085ff79b4/FLAGf9462c63d [2020-12-22 05:53:44,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e3f5e77/65118d8901c343329c2f01f085ff79b4 [2020-12-22 05:53:44,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:53:44,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:53:44,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:53:44,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:53:44,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:53:44,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:53:44" (1/1) ... [2020-12-22 05:53:44,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155e52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:44, skipping insertion in model container [2020-12-22 05:53:44,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:53:44" (1/1) ... [2020-12-22 05:53:44,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:53:44,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:53:44,978 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/product-lines/elevator_spec13_product23.cil.c[1487,1500] [2020-12-22 05:53:45,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:53:45,449 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:53:45,477 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/product-lines/elevator_spec13_product23.cil.c[1487,1500] [2020-12-22 05:53:45,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:53:45,718 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:53:45,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45 WrapperNode [2020-12-22 05:53:45,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:53:45,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:53:45,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:53:45,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:53:45,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (1/1) ... [2020-12-22 05:53:45,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (1/1) ... [2020-12-22 05:53:46,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:53:46,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:53:46,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:53:46,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:53:46,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (1/1) ... [2020-12-22 05:53:46,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (1/1) ... [2020-12-22 05:53:46,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (1/1) ... [2020-12-22 05:53:46,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (1/1) ... [2020-12-22 05:53:46,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (1/1) ... [2020-12-22 05:53:47,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (1/1) ... [2020-12-22 05:53:47,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (1/1) ... [2020-12-22 05:53:47,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:53:47,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:53:47,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:53:47,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:53:47,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (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 05:53:47,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:53:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:53:47,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:53:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:54:05,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:54:05,204 INFO L299 CfgBuilder]: Removed 2071 assume(true) statements. [2020-12-22 05:54:05,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:54:05 BoogieIcfgContainer [2020-12-22 05:54:05,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:54:05,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:54:05,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:54:05,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:54:05,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:53:44" (1/3) ... [2020-12-22 05:54:05,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df83f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:54:05, skipping insertion in model container [2020-12-22 05:54:05,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:53:45" (2/3) ... [2020-12-22 05:54:05,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df83f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:54:05, skipping insertion in model container [2020-12-22 05:54:05,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:54:05" (3/3) ... [2020-12-22 05:54:05,224 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2020-12-22 05:54:05,230 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:54:05,239 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 05:54:05,258 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 05:54:05,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:54:05,319 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:54:05,319 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:54:05,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:54:05,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:54:05,320 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:54:05,320 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:54:05,320 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:54:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 9326 states. [2020-12-22 05:54:05,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 05:54:05,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:05,488 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] [2020-12-22 05:54:05,489 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 05:54:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:05,495 INFO L82 PathProgramCache]: Analyzing trace with hash -9120908, now seen corresponding path program 1 times [2020-12-22 05:54:05,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:05,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335393199] [2020-12-22 05:54:05,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:05,885 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 05:54:05,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335393199] [2020-12-22 05:54:05,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:05,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:54:05,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448356011] [2020-12-22 05:54:05,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:54:05,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:05,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:54:05,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:54:05,910 INFO L87 Difference]: Start difference. First operand 9326 states. Second operand 3 states. [2020-12-22 05:54:06,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:06,771 INFO L93 Difference]: Finished difference Result 27899 states and 52697 transitions. [2020-12-22 05:54:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:54:06,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 05:54:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:06,921 INFO L225 Difference]: With dead ends: 27899 [2020-12-22 05:54:06,921 INFO L226 Difference]: Without dead ends: 18573 [2020-12-22 05:54:06,954 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 05:54:07,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18573 states. [2020-12-22 05:54:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18573 to 9318. [2020-12-22 05:54:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9318 states. [2020-12-22 05:54:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 17465 transitions. [2020-12-22 05:54:07,394 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 17465 transitions. Word has length 58 [2020-12-22 05:54:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:07,394 INFO L481 AbstractCegarLoop]: Abstraction has 9318 states and 17465 transitions. [2020-12-22 05:54:07,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:54:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 17465 transitions. [2020-12-22 05:54:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:54:07,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:07,404 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] [2020-12-22 05:54:07,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:54:07,408 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 05:54:07,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:07,410 INFO L82 PathProgramCache]: Analyzing trace with hash -648398478, now seen corresponding path program 1 times [2020-12-22 05:54:07,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:07,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930044706] [2020-12-22 05:54:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:07,620 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 05:54:07,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930044706] [2020-12-22 05:54:07,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:07,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:54:07,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570232550] [2020-12-22 05:54:07,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:54:07,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:07,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:54:07,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:54:07,625 INFO L87 Difference]: Start difference. First operand 9318 states and 17465 transitions. Second operand 4 states. [2020-12-22 05:54:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:09,117 INFO L93 Difference]: Finished difference Result 36988 states and 69323 transitions. [2020-12-22 05:54:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:54:09,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 05:54:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:09,237 INFO L225 Difference]: With dead ends: 36988 [2020-12-22 05:54:09,237 INFO L226 Difference]: Without dead ends: 27689 [2020-12-22 05:54:09,263 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 05:54:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27689 states. [2020-12-22 05:54:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27689 to 9303. [2020-12-22 05:54:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9303 states. [2020-12-22 05:54:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 17421 transitions. [2020-12-22 05:54:09,692 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 17421 transitions. Word has length 59 [2020-12-22 05:54:09,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:09,692 INFO L481 AbstractCegarLoop]: Abstraction has 9303 states and 17421 transitions. [2020-12-22 05:54:09,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:54:09,693 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 17421 transitions. [2020-12-22 05:54:09,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:54:09,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:09,698 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] [2020-12-22 05:54:09,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:54:09,700 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 05:54:09,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:09,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1562857442, now seen corresponding path program 1 times [2020-12-22 05:54:09,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:09,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936416099] [2020-12-22 05:54:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:09,847 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 05:54:09,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936416099] [2020-12-22 05:54:09,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:09,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:54:09,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569038511] [2020-12-22 05:54:09,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:54:09,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:09,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:54:09,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:54:09,851 INFO L87 Difference]: Start difference. First operand 9303 states and 17421 transitions. Second operand 4 states. [2020-12-22 05:54:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:11,133 INFO L93 Difference]: Finished difference Result 35190 states and 65921 transitions. [2020-12-22 05:54:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:54:11,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:54:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:11,206 INFO L225 Difference]: With dead ends: 35190 [2020-12-22 05:54:11,207 INFO L226 Difference]: Without dead ends: 25906 [2020-12-22 05:54:11,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:54:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25906 states. [2020-12-22 05:54:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25906 to 9303. [2020-12-22 05:54:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9303 states. [2020-12-22 05:54:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 17415 transitions. [2020-12-22 05:54:11,610 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 17415 transitions. Word has length 62 [2020-12-22 05:54:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:11,611 INFO L481 AbstractCegarLoop]: Abstraction has 9303 states and 17415 transitions. [2020-12-22 05:54:11,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:54:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 17415 transitions. [2020-12-22 05:54:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 05:54:11,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:11,615 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] [2020-12-22 05:54:11,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:54:11,616 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 05:54:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:11,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1316332494, now seen corresponding path program 1 times [2020-12-22 05:54:11,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:11,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400750941] [2020-12-22 05:54:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:11,691 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 05:54:11,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400750941] [2020-12-22 05:54:11,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:11,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:54:11,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057854745] [2020-12-22 05:54:11,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:54:11,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:11,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:54:11,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:54:11,693 INFO L87 Difference]: Start difference. First operand 9303 states and 17415 transitions. Second operand 4 states. [2020-12-22 05:54:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:12,663 INFO L93 Difference]: Finished difference Result 36992 states and 69293 transitions. [2020-12-22 05:54:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:54:12,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 05:54:12,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:12,878 INFO L225 Difference]: With dead ends: 36992 [2020-12-22 05:54:12,878 INFO L226 Difference]: Without dead ends: 27714 [2020-12-22 05:54:12,896 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 05:54:12,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27714 states. [2020-12-22 05:54:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27714 to 9307. [2020-12-22 05:54:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9307 states. [2020-12-22 05:54:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9307 states to 9307 states and 17418 transitions. [2020-12-22 05:54:13,455 INFO L78 Accepts]: Start accepts. Automaton has 9307 states and 17418 transitions. Word has length 64 [2020-12-22 05:54:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:13,456 INFO L481 AbstractCegarLoop]: Abstraction has 9307 states and 17418 transitions. [2020-12-22 05:54:13,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:54:13,456 INFO L276 IsEmpty]: Start isEmpty. Operand 9307 states and 17418 transitions. [2020-12-22 05:54:13,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 05:54:13,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:13,462 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] [2020-12-22 05:54:13,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:54:13,462 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 05:54:13,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:13,463 INFO L82 PathProgramCache]: Analyzing trace with hash 534013704, now seen corresponding path program 1 times [2020-12-22 05:54:13,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:13,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057314129] [2020-12-22 05:54:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:13,538 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 05:54:13,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057314129] [2020-12-22 05:54:13,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:13,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:54:13,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840567452] [2020-12-22 05:54:13,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:54:13,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:13,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:54:13,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:54:13,541 INFO L87 Difference]: Start difference. First operand 9307 states and 17418 transitions. Second operand 4 states. [2020-12-22 05:54:14,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:14,759 INFO L93 Difference]: Finished difference Result 37001 states and 69299 transitions. [2020-12-22 05:54:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:54:14,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 05:54:14,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:14,850 INFO L225 Difference]: With dead ends: 37001 [2020-12-22 05:54:14,850 INFO L226 Difference]: Without dead ends: 27719 [2020-12-22 05:54:14,872 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 05:54:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27719 states. [2020-12-22 05:54:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27719 to 9313. [2020-12-22 05:54:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9313 states. [2020-12-22 05:54:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9313 states to 9313 states and 17423 transitions. [2020-12-22 05:54:15,460 INFO L78 Accepts]: Start accepts. Automaton has 9313 states and 17423 transitions. Word has length 65 [2020-12-22 05:54:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:15,461 INFO L481 AbstractCegarLoop]: Abstraction has 9313 states and 17423 transitions. [2020-12-22 05:54:15,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:54:15,461 INFO L276 IsEmpty]: Start isEmpty. Operand 9313 states and 17423 transitions. [2020-12-22 05:54:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:54:15,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:15,465 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] [2020-12-22 05:54:15,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:54:15,466 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 05:54:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1681858483, now seen corresponding path program 1 times [2020-12-22 05:54:15,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:15,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732393795] [2020-12-22 05:54:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:15,554 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 05:54:15,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732393795] [2020-12-22 05:54:15,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:15,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:54:15,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208440162] [2020-12-22 05:54:15,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:54:15,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:15,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:54:15,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:54:15,557 INFO L87 Difference]: Start difference. First operand 9313 states and 17423 transitions. Second operand 4 states. [2020-12-22 05:54:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:16,712 INFO L93 Difference]: Finished difference Result 37014 states and 69309 transitions. [2020-12-22 05:54:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:54:16,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 05:54:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:16,795 INFO L225 Difference]: With dead ends: 37014 [2020-12-22 05:54:16,796 INFO L226 Difference]: Without dead ends: 27726 [2020-12-22 05:54:16,815 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 05:54:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27726 states. [2020-12-22 05:54:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27726 to 9321. [2020-12-22 05:54:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9321 states. [2020-12-22 05:54:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9321 states to 9321 states and 17430 transitions. [2020-12-22 05:54:17,226 INFO L78 Accepts]: Start accepts. Automaton has 9321 states and 17430 transitions. Word has length 66 [2020-12-22 05:54:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:17,226 INFO L481 AbstractCegarLoop]: Abstraction has 9321 states and 17430 transitions. [2020-12-22 05:54:17,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:54:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9321 states and 17430 transitions. [2020-12-22 05:54:17,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 05:54:17,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:17,234 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] [2020-12-22 05:54:17,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:54:17,234 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 05:54:17,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:17,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1101481725, now seen corresponding path program 1 times [2020-12-22 05:54:17,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:17,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591544914] [2020-12-22 05:54:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:17,430 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 05:54:17,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591544914] [2020-12-22 05:54:17,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:17,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:54:17,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582061315] [2020-12-22 05:54:17,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:54:17,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:17,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:54:17,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:54:17,432 INFO L87 Difference]: Start difference. First operand 9321 states and 17430 transitions. Second operand 3 states. [2020-12-22 05:54:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:17,762 INFO L93 Difference]: Finished difference Result 22354 states and 41826 transitions. [2020-12-22 05:54:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:54:17,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 05:54:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:17,798 INFO L225 Difference]: With dead ends: 22354 [2020-12-22 05:54:17,798 INFO L226 Difference]: Without dead ends: 13062 [2020-12-22 05:54:17,817 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 05:54:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13062 states. [2020-12-22 05:54:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13062 to 9313. [2020-12-22 05:54:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9313 states. [2020-12-22 05:54:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9313 states to 9313 states and 17416 transitions. [2020-12-22 05:54:18,269 INFO L78 Accepts]: Start accepts. Automaton has 9313 states and 17416 transitions. Word has length 67 [2020-12-22 05:54:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:18,269 INFO L481 AbstractCegarLoop]: Abstraction has 9313 states and 17416 transitions. [2020-12-22 05:54:18,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:54:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 9313 states and 17416 transitions. [2020-12-22 05:54:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:54:18,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:18,274 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] [2020-12-22 05:54:18,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:54:18,274 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 05:54:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:18,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1900873570, now seen corresponding path program 1 times [2020-12-22 05:54:18,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:18,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951627355] [2020-12-22 05:54:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:18,338 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 05:54:18,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951627355] [2020-12-22 05:54:18,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:18,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:54:18,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704139483] [2020-12-22 05:54:18,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:54:18,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:18,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:54:18,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:54:18,341 INFO L87 Difference]: Start difference. First operand 9313 states and 17416 transitions. Second operand 5 states. [2020-12-22 05:54:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:19,041 INFO L93 Difference]: Finished difference Result 29734 states and 55649 transitions. [2020-12-22 05:54:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:54:19,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 05:54:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:19,098 INFO L225 Difference]: With dead ends: 29734 [2020-12-22 05:54:19,099 INFO L226 Difference]: Without dead ends: 20489 [2020-12-22 05:54:19,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:54:19,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20489 states. [2020-12-22 05:54:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20489 to 9307. [2020-12-22 05:54:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9307 states. [2020-12-22 05:54:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9307 states to 9307 states and 17403 transitions. [2020-12-22 05:54:19,667 INFO L78 Accepts]: Start accepts. Automaton has 9307 states and 17403 transitions. Word has length 69 [2020-12-22 05:54:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:19,668 INFO L481 AbstractCegarLoop]: Abstraction has 9307 states and 17403 transitions. [2020-12-22 05:54:19,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:54:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 9307 states and 17403 transitions. [2020-12-22 05:54:19,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:54:19,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:19,676 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] [2020-12-22 05:54:19,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:54:19,677 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 05:54:19,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:19,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1169725652, now seen corresponding path program 1 times [2020-12-22 05:54:19,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:19,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743906118] [2020-12-22 05:54:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:19,778 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 05:54:19,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743906118] [2020-12-22 05:54:19,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:19,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:54:19,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024019669] [2020-12-22 05:54:19,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:54:19,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:19,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:54:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:54:19,787 INFO L87 Difference]: Start difference. First operand 9307 states and 17403 transitions. Second operand 5 states. [2020-12-22 05:54:20,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:20,564 INFO L93 Difference]: Finished difference Result 29710 states and 55602 transitions. [2020-12-22 05:54:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:54:20,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 05:54:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:20,601 INFO L225 Difference]: With dead ends: 29710 [2020-12-22 05:54:20,601 INFO L226 Difference]: Without dead ends: 20463 [2020-12-22 05:54:20,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:54:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20463 states. [2020-12-22 05:54:20,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20463 to 9301. [2020-12-22 05:54:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9301 states. [2020-12-22 05:54:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 17390 transitions. [2020-12-22 05:54:20,980 INFO L78 Accepts]: Start accepts. Automaton has 9301 states and 17390 transitions. Word has length 71 [2020-12-22 05:54:20,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:20,981 INFO L481 AbstractCegarLoop]: Abstraction has 9301 states and 17390 transitions. [2020-12-22 05:54:20,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:54:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 9301 states and 17390 transitions. [2020-12-22 05:54:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:54:20,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:20,985 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] [2020-12-22 05:54:20,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:54:20,986 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 05:54:20,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:20,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1796026347, now seen corresponding path program 1 times [2020-12-22 05:54:20,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:20,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832872477] [2020-12-22 05:54:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:21,169 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 05:54:21,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832872477] [2020-12-22 05:54:21,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:21,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:54:21,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638711587] [2020-12-22 05:54:21,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:54:21,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:21,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:54:21,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:54:21,172 INFO L87 Difference]: Start difference. First operand 9301 states and 17390 transitions. Second operand 4 states. [2020-12-22 05:54:21,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:21,833 INFO L93 Difference]: Finished difference Result 22292 states and 41698 transitions. [2020-12-22 05:54:21,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:54:21,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-22 05:54:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:21,856 INFO L225 Difference]: With dead ends: 22292 [2020-12-22 05:54:21,856 INFO L226 Difference]: Without dead ends: 13044 [2020-12-22 05:54:21,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 05:54:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13044 states. [2020-12-22 05:54:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13044 to 9301. [2020-12-22 05:54:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9301 states. [2020-12-22 05:54:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 17382 transitions. [2020-12-22 05:54:22,345 INFO L78 Accepts]: Start accepts. Automaton has 9301 states and 17382 transitions. Word has length 73 [2020-12-22 05:54:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:22,345 INFO L481 AbstractCegarLoop]: Abstraction has 9301 states and 17382 transitions. [2020-12-22 05:54:22,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:54:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 9301 states and 17382 transitions. [2020-12-22 05:54:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 05:54:22,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:22,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:54:22,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:54:22,350 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 05:54:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1375286721, now seen corresponding path program 1 times [2020-12-22 05:54:22,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:22,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343495072] [2020-12-22 05:54:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:22,424 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 05:54:22,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343495072] [2020-12-22 05:54:22,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:22,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:54:22,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590610344] [2020-12-22 05:54:22,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:54:22,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:22,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:54:22,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:54:22,426 INFO L87 Difference]: Start difference. First operand 9301 states and 17382 transitions. Second operand 4 states. [2020-12-22 05:54:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:28,360 INFO L93 Difference]: Finished difference Result 25528 states and 47644 transitions. [2020-12-22 05:54:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:54:28,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-22 05:54:28,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:28,381 INFO L225 Difference]: With dead ends: 25528 [2020-12-22 05:54:28,382 INFO L226 Difference]: Without dead ends: 16298 [2020-12-22 05:54:28,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:54:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16298 states. [2020-12-22 05:54:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16298 to 9301. [2020-12-22 05:54:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9301 states. [2020-12-22 05:54:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 17002 transitions. [2020-12-22 05:54:28,857 INFO L78 Accepts]: Start accepts. Automaton has 9301 states and 17002 transitions. Word has length 74 [2020-12-22 05:54:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:28,857 INFO L481 AbstractCegarLoop]: Abstraction has 9301 states and 17002 transitions. [2020-12-22 05:54:28,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:54:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9301 states and 17002 transitions. [2020-12-22 05:54:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 05:54:28,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:28,861 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] [2020-12-22 05:54:28,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:54:28,862 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 05:54:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:28,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1619201109, now seen corresponding path program 1 times [2020-12-22 05:54:28,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:28,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075668500] [2020-12-22 05:54:28,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:28,950 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 05:54:28,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075668500] [2020-12-22 05:54:28,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:28,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:54:28,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63745132] [2020-12-22 05:54:28,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:54:28,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:28,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:54:28,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:54:28,952 INFO L87 Difference]: Start difference. First operand 9301 states and 17002 transitions. Second operand 6 states. [2020-12-22 05:54:43,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:43,355 INFO L93 Difference]: Finished difference Result 72531 states and 133761 transitions. [2020-12-22 05:54:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:54:43,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-22 05:54:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:43,450 INFO L225 Difference]: With dead ends: 72531 [2020-12-22 05:54:43,450 INFO L226 Difference]: Without dead ends: 63328 [2020-12-22 05:54:43,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:54:43,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63328 states. [2020-12-22 05:54:44,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63328 to 18427. [2020-12-22 05:54:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18427 states. [2020-12-22 05:54:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18427 states to 18427 states and 33732 transitions. [2020-12-22 05:54:44,705 INFO L78 Accepts]: Start accepts. Automaton has 18427 states and 33732 transitions. Word has length 82 [2020-12-22 05:54:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:44,706 INFO L481 AbstractCegarLoop]: Abstraction has 18427 states and 33732 transitions. [2020-12-22 05:54:44,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:54:44,707 INFO L276 IsEmpty]: Start isEmpty. Operand 18427 states and 33732 transitions. [2020-12-22 05:54:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:54:44,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:44,713 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] [2020-12-22 05:54:44,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:54:44,713 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 05:54:44,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:44,714 INFO L82 PathProgramCache]: Analyzing trace with hash -758235302, now seen corresponding path program 1 times [2020-12-22 05:54:44,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:44,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86312632] [2020-12-22 05:54:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:44,779 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 05:54:44,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86312632] [2020-12-22 05:54:44,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:44,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:54:44,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73339697] [2020-12-22 05:54:44,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:54:44,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:44,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:54:44,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:54:44,782 INFO L87 Difference]: Start difference. First operand 18427 states and 33732 transitions. Second operand 4 states. [2020-12-22 05:54:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:46,084 INFO L93 Difference]: Finished difference Result 51465 states and 94274 transitions. [2020-12-22 05:54:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:54:46,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-22 05:54:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:46,124 INFO L225 Difference]: With dead ends: 51465 [2020-12-22 05:54:46,124 INFO L226 Difference]: Without dead ends: 33099 [2020-12-22 05:54:46,146 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 05:54:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33099 states. [2020-12-22 05:54:47,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33099 to 18399. [2020-12-22 05:54:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18399 states. [2020-12-22 05:54:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18399 states to 18399 states and 33682 transitions. [2020-12-22 05:54:47,044 INFO L78 Accepts]: Start accepts. Automaton has 18399 states and 33682 transitions. Word has length 83 [2020-12-22 05:54:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:47,045 INFO L481 AbstractCegarLoop]: Abstraction has 18399 states and 33682 transitions. [2020-12-22 05:54:47,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:54:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 18399 states and 33682 transitions. [2020-12-22 05:54:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:54:47,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:47,052 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] [2020-12-22 05:54:47,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:54:47,052 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 05:54:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:47,053 INFO L82 PathProgramCache]: Analyzing trace with hash 569783718, now seen corresponding path program 1 times [2020-12-22 05:54:47,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:47,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699091245] [2020-12-22 05:54:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:47,232 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 05:54:47,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699091245] [2020-12-22 05:54:47,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:47,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:54:47,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211062861] [2020-12-22 05:54:47,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:54:47,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:47,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:54:47,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:54:47,235 INFO L87 Difference]: Start difference. First operand 18399 states and 33682 transitions. Second operand 5 states. [2020-12-22 05:54:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:48,762 INFO L93 Difference]: Finished difference Result 64256 states and 117690 transitions. [2020-12-22 05:54:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:54:48,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 05:54:48,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:48,813 INFO L225 Difference]: With dead ends: 64256 [2020-12-22 05:54:48,814 INFO L226 Difference]: Without dead ends: 45881 [2020-12-22 05:54:48,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:54:48,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45881 states. [2020-12-22 05:54:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45881 to 18388. [2020-12-22 05:54:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18388 states. [2020-12-22 05:54:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18388 states to 18388 states and 33662 transitions. [2020-12-22 05:54:49,638 INFO L78 Accepts]: Start accepts. Automaton has 18388 states and 33662 transitions. Word has length 83 [2020-12-22 05:54:49,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:49,638 INFO L481 AbstractCegarLoop]: Abstraction has 18388 states and 33662 transitions. [2020-12-22 05:54:49,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:54:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 18388 states and 33662 transitions. [2020-12-22 05:54:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 05:54:49,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:49,643 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] [2020-12-22 05:54:49,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:54:49,644 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 05:54:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1387664326, now seen corresponding path program 1 times [2020-12-22 05:54:49,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:49,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657111920] [2020-12-22 05:54:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:49,715 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 05:54:49,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657111920] [2020-12-22 05:54:49,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:49,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:54:49,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96083887] [2020-12-22 05:54:49,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:54:49,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:49,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:54:49,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:54:49,717 INFO L87 Difference]: Start difference. First operand 18388 states and 33662 transitions. Second operand 5 states. [2020-12-22 05:54:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:50,633 INFO L93 Difference]: Finished difference Result 38497 states and 70493 transitions. [2020-12-22 05:54:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:54:50,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-12-22 05:54:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:50,657 INFO L225 Difference]: With dead ends: 38497 [2020-12-22 05:54:50,657 INFO L226 Difference]: Without dead ends: 20151 [2020-12-22 05:54:50,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:54:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2020-12-22 05:54:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 12849. [2020-12-22 05:54:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12849 states. [2020-12-22 05:54:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12849 states to 12849 states and 23509 transitions. [2020-12-22 05:54:51,261 INFO L78 Accepts]: Start accepts. Automaton has 12849 states and 23509 transitions. Word has length 84 [2020-12-22 05:54:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:54:51,261 INFO L481 AbstractCegarLoop]: Abstraction has 12849 states and 23509 transitions. [2020-12-22 05:54:51,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:54:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 12849 states and 23509 transitions. [2020-12-22 05:54:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:54:51,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:54:51,264 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] [2020-12-22 05:54:51,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:54:51,265 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 05:54:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:54:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1533697070, now seen corresponding path program 1 times [2020-12-22 05:54:51,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:54:51,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883918757] [2020-12-22 05:54:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:54:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:54:51,354 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 05:54:51,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883918757] [2020-12-22 05:54:51,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:54:51,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:54:51,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470713030] [2020-12-22 05:54:51,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:54:51,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:54:51,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:54:51,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:54:51,357 INFO L87 Difference]: Start difference. First operand 12849 states and 23509 transitions. Second operand 6 states. [2020-12-22 05:54:59,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:54:59,406 INFO L93 Difference]: Finished difference Result 52638 states and 96972 transitions. [2020-12-22 05:54:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:54:59,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 05:54:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:54:59,453 INFO L225 Difference]: With dead ends: 52638 [2020-12-22 05:54:59,453 INFO L226 Difference]: Without dead ends: 41060 [2020-12-22 05:54:59,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:54:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41060 states. [2020-12-22 05:55:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41060 to 12839. [2020-12-22 05:55:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12839 states. [2020-12-22 05:55:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12839 states to 12839 states and 23489 transitions. [2020-12-22 05:55:00,111 INFO L78 Accepts]: Start accepts. Automaton has 12839 states and 23489 transitions. Word has length 85 [2020-12-22 05:55:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:00,112 INFO L481 AbstractCegarLoop]: Abstraction has 12839 states and 23489 transitions. [2020-12-22 05:55:00,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:55:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 12839 states and 23489 transitions. [2020-12-22 05:55:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 05:55:00,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:00,115 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] [2020-12-22 05:55:00,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:55:00,116 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 05:55:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:00,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2121161540, now seen corresponding path program 1 times [2020-12-22 05:55:00,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:00,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299186653] [2020-12-22 05:55:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:00,187 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 05:55:00,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299186653] [2020-12-22 05:55:00,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:00,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:55:00,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304928212] [2020-12-22 05:55:00,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:00,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:00,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:00,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:00,189 INFO L87 Difference]: Start difference. First operand 12839 states and 23489 transitions. Second operand 3 states. [2020-12-22 05:55:01,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:01,613 INFO L93 Difference]: Finished difference Result 36394 states and 66608 transitions. [2020-12-22 05:55:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:01,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 05:55:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:01,641 INFO L225 Difference]: With dead ends: 36394 [2020-12-22 05:55:01,641 INFO L226 Difference]: Without dead ends: 24447 [2020-12-22 05:55:01,659 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 05:55:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24447 states. [2020-12-22 05:55:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24447 to 24427. [2020-12-22 05:55:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24427 states. [2020-12-22 05:55:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24427 states to 24427 states and 44603 transitions. [2020-12-22 05:55:02,820 INFO L78 Accepts]: Start accepts. Automaton has 24427 states and 44603 transitions. Word has length 91 [2020-12-22 05:55:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:02,821 INFO L481 AbstractCegarLoop]: Abstraction has 24427 states and 44603 transitions. [2020-12-22 05:55:02,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 24427 states and 44603 transitions. [2020-12-22 05:55:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 05:55:02,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:02,825 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] [2020-12-22 05:55:02,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:55:02,825 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 05:55:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:02,826 INFO L82 PathProgramCache]: Analyzing trace with hash -436008606, now seen corresponding path program 1 times [2020-12-22 05:55:02,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:02,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971812749] [2020-12-22 05:55:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:02,895 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 05:55:02,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971812749] [2020-12-22 05:55:02,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:02,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:55:02,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154292474] [2020-12-22 05:55:02,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:02,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:02,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:02,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:02,898 INFO L87 Difference]: Start difference. First operand 24427 states and 44603 transitions. Second operand 3 states. [2020-12-22 05:55:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:05,134 INFO L93 Difference]: Finished difference Result 70441 states and 128605 transitions. [2020-12-22 05:55:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:05,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 05:55:05,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:05,186 INFO L225 Difference]: With dead ends: 70441 [2020-12-22 05:55:05,186 INFO L226 Difference]: Without dead ends: 47543 [2020-12-22 05:55:05,203 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 05:55:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47543 states. [2020-12-22 05:55:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47543 to 47523. [2020-12-22 05:55:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47523 states. [2020-12-22 05:55:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47523 states to 47523 states and 86564 transitions. [2020-12-22 05:55:07,132 INFO L78 Accepts]: Start accepts. Automaton has 47523 states and 86564 transitions. Word has length 92 [2020-12-22 05:55:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:07,133 INFO L481 AbstractCegarLoop]: Abstraction has 47523 states and 86564 transitions. [2020-12-22 05:55:07,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:07,133 INFO L276 IsEmpty]: Start isEmpty. Operand 47523 states and 86564 transitions. [2020-12-22 05:55:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 05:55:07,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:07,137 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] [2020-12-22 05:55:07,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:55:07,138 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 05:55:07,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:07,138 INFO L82 PathProgramCache]: Analyzing trace with hash 622412767, now seen corresponding path program 1 times [2020-12-22 05:55:07,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:07,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138340862] [2020-12-22 05:55:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:07,207 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 05:55:07,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138340862] [2020-12-22 05:55:07,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:07,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:55:07,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464220907] [2020-12-22 05:55:07,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:07,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:07,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:07,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:07,210 INFO L87 Difference]: Start difference. First operand 47523 states and 86564 transitions. Second operand 3 states. [2020-12-22 05:55:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:11,175 INFO L93 Difference]: Finished difference Result 138375 states and 251944 transitions. [2020-12-22 05:55:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:11,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 05:55:11,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:11,321 INFO L225 Difference]: With dead ends: 138375 [2020-12-22 05:55:11,321 INFO L226 Difference]: Without dead ends: 93547 [2020-12-22 05:55:11,371 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 05:55:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93547 states. [2020-12-22 05:55:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93547 to 93527. [2020-12-22 05:55:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93527 states. [2020-12-22 05:55:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93527 states to 93527 states and 169884 transitions. [2020-12-22 05:55:15,480 INFO L78 Accepts]: Start accepts. Automaton has 93527 states and 169884 transitions. Word has length 93 [2020-12-22 05:55:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:15,480 INFO L481 AbstractCegarLoop]: Abstraction has 93527 states and 169884 transitions. [2020-12-22 05:55:15,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:15,480 INFO L276 IsEmpty]: Start isEmpty. Operand 93527 states and 169884 transitions. [2020-12-22 05:55:15,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 05:55:15,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:15,485 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] [2020-12-22 05:55:15,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:55:15,486 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 05:55:15,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:15,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2095021533, now seen corresponding path program 1 times [2020-12-22 05:55:15,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:15,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054684894] [2020-12-22 05:55:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:15,556 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 05:55:15,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054684894] [2020-12-22 05:55:15,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:15,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:55:15,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478195970] [2020-12-22 05:55:15,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:15,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:15,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:15,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:15,558 INFO L87 Difference]: Start difference. First operand 93527 states and 169884 transitions. Second operand 3 states. [2020-12-22 05:55:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:22,796 INFO L93 Difference]: Finished difference Result 273867 states and 497173 transitions. [2020-12-22 05:55:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:22,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-22 05:55:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:23,284 INFO L225 Difference]: With dead ends: 273867 [2020-12-22 05:55:23,284 INFO L226 Difference]: Without dead ends: 185151 [2020-12-22 05:55:23,359 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 05:55:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185151 states. [2020-12-22 05:55:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185151 to 185131. [2020-12-22 05:55:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185131 states. [2020-12-22 05:55:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185131 states to 185131 states and 335252 transitions. [2020-12-22 05:55:31,236 INFO L78 Accepts]: Start accepts. Automaton has 185131 states and 335252 transitions. Word has length 94 [2020-12-22 05:55:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:31,236 INFO L481 AbstractCegarLoop]: Abstraction has 185131 states and 335252 transitions. [2020-12-22 05:55:31,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 185131 states and 335252 transitions. [2020-12-22 05:55:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 05:55:31,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:31,242 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] [2020-12-22 05:55:31,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:55:31,242 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 05:55:31,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:31,243 INFO L82 PathProgramCache]: Analyzing trace with hash -772429702, now seen corresponding path program 1 times [2020-12-22 05:55:31,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:31,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995760265] [2020-12-22 05:55:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:31,331 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 05:55:31,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995760265] [2020-12-22 05:55:31,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:31,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:55:31,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407236966] [2020-12-22 05:55:31,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:31,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:31,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:31,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:31,335 INFO L87 Difference]: Start difference. First operand 185131 states and 335252 transitions. Second operand 3 states. [2020-12-22 05:55:44,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:44,284 INFO L93 Difference]: Finished difference Result 544043 states and 984584 transitions. [2020-12-22 05:55:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:44,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 05:55:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:45,165 INFO L225 Difference]: With dead ends: 544043 [2020-12-22 05:55:45,166 INFO L226 Difference]: Without dead ends: 367523 [2020-12-22 05:55:45,348 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 05:55:45,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367523 states.