/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_spec2_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:06:43,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:06:43,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:06:43,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:06:43,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:06:43,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:06:43,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:06:43,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:06:43,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:06:43,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:06:43,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:06:43,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:06:43,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:06:43,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:06:43,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:06:43,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:06:43,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:06:43,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:06:43,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:06:43,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:06:43,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:06:43,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:06:43,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:06:43,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:06:43,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:06:43,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:06:43,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:06:43,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:06:43,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:06:43,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:06:43,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:06:43,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:06:43,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:06:43,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:06:43,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:06:43,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:06:43,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:06:43,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:06:43,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:06:43,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:06:43,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:06:43,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:06:43,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:06:43,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:06:43,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:06:43,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:06:43,625 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:06:43,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:06:43,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:06:43,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:06:43,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:06:43,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:06:43,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:06:43,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:06:43,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:06:43,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:06:43,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:06:43,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:06:43,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:06:43,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:06:43,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:06:43,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:06:43,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:06:43,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:06:43,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:06:43,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:06:43,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:06:43,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:06:44,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:06:44,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:06:44,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:06:44,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:06:44,165 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:06:44,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2020-12-22 06:06:44,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3480e01e/c66bd6893fd34cf893b7efe1736ac89b/FLAGf5acffe56 [2020-12-22 06:06:45,082 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:06:45,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2020-12-22 06:06:45,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3480e01e/c66bd6893fd34cf893b7efe1736ac89b/FLAGf5acffe56 [2020-12-22 06:06:45,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3480e01e/c66bd6893fd34cf893b7efe1736ac89b [2020-12-22 06:06:45,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:06:45,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:06:45,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:06:45,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:06:45,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:06:45,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:45" (1/1) ... [2020-12-22 06:06:45,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddb98a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:45, skipping insertion in model container [2020-12-22 06:06:45,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:45" (1/1) ... [2020-12-22 06:06:45,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:06:45,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:06:45,807 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_spec2_product29.cil.c[17090,17103] [2020-12-22 06:06:46,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:06:46,308 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:06:46,362 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_spec2_product29.cil.c[17090,17103] [2020-12-22 06:06:46,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:06:46,519 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:06:46,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46 WrapperNode [2020-12-22 06:06:46,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:06:46,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:06:46,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:06:46,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:06:46,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (1/1) ... [2020-12-22 06:06:46,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (1/1) ... [2020-12-22 06:06:46,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:06:46,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:06:46,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:06:46,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:06:46,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (1/1) ... [2020-12-22 06:06:46,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (1/1) ... [2020-12-22 06:06:46,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (1/1) ... [2020-12-22 06:06:46,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (1/1) ... [2020-12-22 06:06:47,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (1/1) ... [2020-12-22 06:06:47,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (1/1) ... [2020-12-22 06:06:47,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (1/1) ... [2020-12-22 06:06:47,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:06:47,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:06:47,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:06:47,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:06:47,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (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 06:06:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:06:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:06:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:06:47,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:06:54,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:06:54,685 INFO L299 CfgBuilder]: Removed 821 assume(true) statements. [2020-12-22 06:06:54,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:54 BoogieIcfgContainer [2020-12-22 06:06:54,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:06:54,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:06:54,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:06:54,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:06:54,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:06:45" (1/3) ... [2020-12-22 06:06:54,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f61f271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:54, skipping insertion in model container [2020-12-22 06:06:54,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:46" (2/3) ... [2020-12-22 06:06:54,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f61f271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:54, skipping insertion in model container [2020-12-22 06:06:54,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:54" (3/3) ... [2020-12-22 06:06:54,702 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2020-12-22 06:06:54,709 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:06:54,716 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:06:54,738 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:06:54,792 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:06:54,792 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:06:54,792 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:06:54,792 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:06:54,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:06:54,793 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:06:54,793 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:06:54,793 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:06:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states. [2020-12-22 06:06:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:06:54,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:54,896 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] [2020-12-22 06:06:54,897 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:54,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1331750797, now seen corresponding path program 1 times [2020-12-22 06:06:54,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:54,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849021857] [2020-12-22 06:06:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:55,459 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 06:06:55,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849021857] [2020-12-22 06:06:55,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:55,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:55,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776929056] [2020-12-22 06:06:55,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:55,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:55,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:55,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:55,495 INFO L87 Difference]: Start difference. First operand 3566 states. Second operand 3 states. [2020-12-22 06:06:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:55,753 INFO L93 Difference]: Finished difference Result 7123 states and 13453 transitions. [2020-12-22 06:06:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:55,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 06:06:55,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:55,800 INFO L225 Difference]: With dead ends: 7123 [2020-12-22 06:06:55,800 INFO L226 Difference]: Without dead ends: 3562 [2020-12-22 06:06:55,814 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 06:06:55,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-12-22 06:06:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2020-12-22 06:06:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3562 states. [2020-12-22 06:06:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 6717 transitions. [2020-12-22 06:06:56,029 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 6717 transitions. Word has length 43 [2020-12-22 06:06:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:56,029 INFO L481 AbstractCegarLoop]: Abstraction has 3562 states and 6717 transitions. [2020-12-22 06:06:56,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 6717 transitions. [2020-12-22 06:06:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:06:56,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:56,034 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] [2020-12-22 06:06:56,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:06:56,036 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:56,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:56,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2097814926, now seen corresponding path program 1 times [2020-12-22 06:06:56,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:56,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363296980] [2020-12-22 06:06:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:56,251 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 06:06:56,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363296980] [2020-12-22 06:06:56,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:56,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:56,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138047338] [2020-12-22 06:06:56,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:56,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:56,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:56,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:56,255 INFO L87 Difference]: Start difference. First operand 3562 states and 6717 transitions. Second operand 4 states. [2020-12-22 06:06:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:56,469 INFO L93 Difference]: Finished difference Result 7075 states and 13350 transitions. [2020-12-22 06:06:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:56,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:06:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:56,492 INFO L225 Difference]: With dead ends: 7075 [2020-12-22 06:06:56,493 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:06:56,502 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 06:06:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:06:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:06:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:06:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6661 transitions. [2020-12-22 06:06:56,642 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6661 transitions. Word has length 50 [2020-12-22 06:06:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:56,642 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6661 transitions. [2020-12-22 06:06:56,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6661 transitions. [2020-12-22 06:06:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:06:56,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:56,649 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] [2020-12-22 06:06:56,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:06:56,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:56,655 INFO L82 PathProgramCache]: Analyzing trace with hash 524523664, now seen corresponding path program 1 times [2020-12-22 06:06:56,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:56,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933084636] [2020-12-22 06:06:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:56,800 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 06:06:56,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933084636] [2020-12-22 06:06:56,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:56,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:56,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648910748] [2020-12-22 06:06:56,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:56,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:56,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:56,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:56,803 INFO L87 Difference]: Start difference. First operand 3535 states and 6661 transitions. Second operand 4 states. [2020-12-22 06:06:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:57,037 INFO L93 Difference]: Finished difference Result 7048 states and 13294 transitions. [2020-12-22 06:06:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:57,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:06:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:57,060 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:06:57,061 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:06:57,070 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 06:06:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:06:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:06:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:06:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6660 transitions. [2020-12-22 06:06:57,380 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6660 transitions. Word has length 51 [2020-12-22 06:06:57,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:57,387 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6660 transitions. [2020-12-22 06:06:57,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:57,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6660 transitions. [2020-12-22 06:06:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:06:57,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:57,394 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] [2020-12-22 06:06:57,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:06:57,394 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:57,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:57,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1922977237, now seen corresponding path program 1 times [2020-12-22 06:06:57,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:57,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460920368] [2020-12-22 06:06:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:57,542 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 06:06:57,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460920368] [2020-12-22 06:06:57,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:57,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:57,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808347393] [2020-12-22 06:06:57,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:57,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:57,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:57,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:57,549 INFO L87 Difference]: Start difference. First operand 3535 states and 6660 transitions. Second operand 4 states. [2020-12-22 06:06:57,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:57,799 INFO L93 Difference]: Finished difference Result 7048 states and 13293 transitions. [2020-12-22 06:06:57,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:57,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:06:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:57,824 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:06:57,824 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:06:57,832 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 06:06:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:06:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:06:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:06:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6659 transitions. [2020-12-22 06:06:58,000 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6659 transitions. Word has length 52 [2020-12-22 06:06:58,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:58,001 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6659 transitions. [2020-12-22 06:06:58,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6659 transitions. [2020-12-22 06:06:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:06:58,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:58,005 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] [2020-12-22 06:06:58,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:06:58,009 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:58,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1932132363, now seen corresponding path program 1 times [2020-12-22 06:06:58,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:58,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812736603] [2020-12-22 06:06:58,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:58,131 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 06:06:58,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812736603] [2020-12-22 06:06:58,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:58,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:58,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831757676] [2020-12-22 06:06:58,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:58,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:58,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:58,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:58,135 INFO L87 Difference]: Start difference. First operand 3535 states and 6659 transitions. Second operand 4 states. [2020-12-22 06:06:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:58,367 INFO L93 Difference]: Finished difference Result 7048 states and 13292 transitions. [2020-12-22 06:06:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:58,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:06:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:58,395 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:06:58,396 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:06:58,403 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 06:06:58,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:06:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:06:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:06:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6658 transitions. [2020-12-22 06:06:58,584 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6658 transitions. Word has length 53 [2020-12-22 06:06:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:58,585 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6658 transitions. [2020-12-22 06:06:58,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6658 transitions. [2020-12-22 06:06:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:06:58,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:58,592 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] [2020-12-22 06:06:58,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:06:58,592 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1143975782, now seen corresponding path program 1 times [2020-12-22 06:06:58,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:58,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43497423] [2020-12-22 06:06:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:58,710 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 06:06:58,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43497423] [2020-12-22 06:06:58,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:58,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:58,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135220636] [2020-12-22 06:06:58,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:58,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:58,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:58,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:58,715 INFO L87 Difference]: Start difference. First operand 3535 states and 6658 transitions. Second operand 4 states. [2020-12-22 06:06:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:58,922 INFO L93 Difference]: Finished difference Result 7048 states and 13291 transitions. [2020-12-22 06:06:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:58,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:06:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:58,968 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:06:58,968 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:06:58,976 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 06:06:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:06:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:06:59,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:06:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6657 transitions. [2020-12-22 06:06:59,213 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6657 transitions. Word has length 54 [2020-12-22 06:06:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:59,213 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6657 transitions. [2020-12-22 06:06:59,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6657 transitions. [2020-12-22 06:06:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:06:59,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:59,217 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] [2020-12-22 06:06:59,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:06:59,218 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:59,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:59,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1851511642, now seen corresponding path program 1 times [2020-12-22 06:06:59,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:59,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615842747] [2020-12-22 06:06:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:59,308 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 06:06:59,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615842747] [2020-12-22 06:06:59,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:59,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:59,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123578631] [2020-12-22 06:06:59,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:59,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:59,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:59,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:59,312 INFO L87 Difference]: Start difference. First operand 3535 states and 6657 transitions. Second operand 4 states. [2020-12-22 06:06:59,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:59,497 INFO L93 Difference]: Finished difference Result 7048 states and 13290 transitions. [2020-12-22 06:06:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:59,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 06:06:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:59,511 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:06:59,511 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:06:59,521 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 06:06:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:06:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:06:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:06:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6656 transitions. [2020-12-22 06:06:59,668 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6656 transitions. Word has length 55 [2020-12-22 06:06:59,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:59,668 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6656 transitions. [2020-12-22 06:06:59,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6656 transitions. [2020-12-22 06:06:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:06:59,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:59,676 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] [2020-12-22 06:06:59,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:06:59,676 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:59,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash 259811167, now seen corresponding path program 1 times [2020-12-22 06:06:59,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:59,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438961556] [2020-12-22 06:06:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:59,771 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 06:06:59,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438961556] [2020-12-22 06:06:59,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:59,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:59,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083549994] [2020-12-22 06:06:59,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:59,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:59,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:59,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:59,775 INFO L87 Difference]: Start difference. First operand 3535 states and 6656 transitions. Second operand 4 states. [2020-12-22 06:06:59,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:59,962 INFO L93 Difference]: Finished difference Result 7042 states and 13278 transitions. [2020-12-22 06:06:59,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:59,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 06:06:59,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:59,974 INFO L225 Difference]: With dead ends: 7042 [2020-12-22 06:06:59,974 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:06:59,981 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 06:06:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:07:00,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:07:00,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:07:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6655 transitions. [2020-12-22 06:07:00,113 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6655 transitions. Word has length 56 [2020-12-22 06:07:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:00,113 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6655 transitions. [2020-12-22 06:07:00,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6655 transitions. [2020-12-22 06:07:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:07:00,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:00,119 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] [2020-12-22 06:07:00,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:07:00,120 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:00,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2078046321, now seen corresponding path program 1 times [2020-12-22 06:07:00,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:00,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640507752] [2020-12-22 06:07:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:00,224 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 06:07:00,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640507752] [2020-12-22 06:07:00,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:00,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:07:00,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702684990] [2020-12-22 06:07:00,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:00,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:00,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:00,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:00,232 INFO L87 Difference]: Start difference. First operand 3535 states and 6655 transitions. Second operand 3 states. [2020-12-22 06:07:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:00,686 INFO L93 Difference]: Finished difference Result 8487 states and 15998 transitions. [2020-12-22 06:07:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:00,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 06:07:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:00,706 INFO L225 Difference]: With dead ends: 8487 [2020-12-22 06:07:00,706 INFO L226 Difference]: Without dead ends: 5895 [2020-12-22 06:07:00,714 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 06:07:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2020-12-22 06:07:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 5880. [2020-12-22 06:07:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5880 states. [2020-12-22 06:07:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 11069 transitions. [2020-12-22 06:07:01,019 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 11069 transitions. Word has length 57 [2020-12-22 06:07:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:01,019 INFO L481 AbstractCegarLoop]: Abstraction has 5880 states and 11069 transitions. [2020-12-22 06:07:01,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 11069 transitions. [2020-12-22 06:07:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:07:01,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:01,023 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 06:07:01,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:07:01,024 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:01,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:01,024 INFO L82 PathProgramCache]: Analyzing trace with hash 681751404, now seen corresponding path program 1 times [2020-12-22 06:07:01,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:01,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647514699] [2020-12-22 06:07:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:01,101 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 06:07:01,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647514699] [2020-12-22 06:07:01,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:01,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:07:01,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413807809] [2020-12-22 06:07:01,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:01,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:01,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:01,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:01,104 INFO L87 Difference]: Start difference. First operand 5880 states and 11069 transitions. Second operand 3 states. [2020-12-22 06:07:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:01,622 INFO L93 Difference]: Finished difference Result 14804 states and 27885 transitions. [2020-12-22 06:07:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:01,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 06:07:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:01,652 INFO L225 Difference]: With dead ends: 14804 [2020-12-22 06:07:01,653 INFO L226 Difference]: Without dead ends: 10482 [2020-12-22 06:07:01,665 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 06:07:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10482 states. [2020-12-22 06:07:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10482 to 10467. [2020-12-22 06:07:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10467 states. [2020-12-22 06:07:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10467 states to 10467 states and 19701 transitions. [2020-12-22 06:07:02,039 INFO L78 Accepts]: Start accepts. Automaton has 10467 states and 19701 transitions. Word has length 58 [2020-12-22 06:07:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:02,040 INFO L481 AbstractCegarLoop]: Abstraction has 10467 states and 19701 transitions. [2020-12-22 06:07:02,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 10467 states and 19701 transitions. [2020-12-22 06:07:02,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:07:02,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:02,044 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 06:07:02,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:07:02,045 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:02,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:02,045 INFO L82 PathProgramCache]: Analyzing trace with hash -2029977228, now seen corresponding path program 1 times [2020-12-22 06:07:02,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:02,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104155128] [2020-12-22 06:07:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:02,120 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 06:07:02,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104155128] [2020-12-22 06:07:02,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:02,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:07:02,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81873442] [2020-12-22 06:07:02,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:02,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:02,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:02,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:02,122 INFO L87 Difference]: Start difference. First operand 10467 states and 19701 transitions. Second operand 3 states. [2020-12-22 06:07:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:02,903 INFO L93 Difference]: Finished difference Result 27232 states and 51254 transitions. [2020-12-22 06:07:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:02,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 06:07:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:02,966 INFO L225 Difference]: With dead ends: 27232 [2020-12-22 06:07:02,966 INFO L226 Difference]: Without dead ends: 19440 [2020-12-22 06:07:02,984 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 06:07:03,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19440 states. [2020-12-22 06:07:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19440 to 19425. [2020-12-22 06:07:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19425 states. [2020-12-22 06:07:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19425 states to 19425 states and 36540 transitions. [2020-12-22 06:07:03,943 INFO L78 Accepts]: Start accepts. Automaton has 19425 states and 36540 transitions. Word has length 59 [2020-12-22 06:07:03,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:03,943 INFO L481 AbstractCegarLoop]: Abstraction has 19425 states and 36540 transitions. [2020-12-22 06:07:03,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 19425 states and 36540 transitions. [2020-12-22 06:07:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:07:03,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:03,948 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] [2020-12-22 06:07:03,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:07:03,948 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1734636209, now seen corresponding path program 1 times [2020-12-22 06:07:03,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:03,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872519401] [2020-12-22 06:07:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:04,184 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 06:07:04,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872519401] [2020-12-22 06:07:04,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:04,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:07:04,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758926568] [2020-12-22 06:07:04,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:04,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:04,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:04,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:04,187 INFO L87 Difference]: Start difference. First operand 19425 states and 36540 transitions. Second operand 3 states. [2020-12-22 06:07:05,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:05,416 INFO L93 Difference]: Finished difference Result 51656 states and 97117 transitions. [2020-12-22 06:07:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:05,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 06:07:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:05,523 INFO L225 Difference]: With dead ends: 51656 [2020-12-22 06:07:05,524 INFO L226 Difference]: Without dead ends: 36914 [2020-12-22 06:07:05,548 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 06:07:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36914 states. [2020-12-22 06:07:06,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36914 to 36899. [2020-12-22 06:07:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36899 states. [2020-12-22 06:07:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36899 states to 36899 states and 69335 transitions. [2020-12-22 06:07:07,229 INFO L78 Accepts]: Start accepts. Automaton has 36899 states and 69335 transitions. Word has length 60 [2020-12-22 06:07:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:07,231 INFO L481 AbstractCegarLoop]: Abstraction has 36899 states and 69335 transitions. [2020-12-22 06:07:07,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 36899 states and 69335 transitions. [2020-12-22 06:07:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:07:07,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:07,239 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] [2020-12-22 06:07:07,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:07:07,240 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash 107423577, now seen corresponding path program 1 times [2020-12-22 06:07:07,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:07,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635834287] [2020-12-22 06:07:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:07,326 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 06:07:07,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635834287] [2020-12-22 06:07:07,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:07,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:07:07,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806348990] [2020-12-22 06:07:07,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:07,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:07,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:07,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:07,329 INFO L87 Difference]: Start difference. First operand 36899 states and 69335 transitions. Second operand 3 states. [2020-12-22 06:07:09,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:09,422 INFO L93 Difference]: Finished difference Result 99620 states and 187028 transitions. [2020-12-22 06:07:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:09,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:07:09,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:09,646 INFO L225 Difference]: With dead ends: 99620 [2020-12-22 06:07:09,646 INFO L226 Difference]: Without dead ends: 70968 [2020-12-22 06:07:09,692 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 06:07:09,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70968 states. [2020-12-22 06:07:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70968 to 70953. [2020-12-22 06:07:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70953 states. [2020-12-22 06:07:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70953 states to 70953 states and 133126 transitions. [2020-12-22 06:07:12,061 INFO L78 Accepts]: Start accepts. Automaton has 70953 states and 133126 transitions. Word has length 61 [2020-12-22 06:07:12,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:12,061 INFO L481 AbstractCegarLoop]: Abstraction has 70953 states and 133126 transitions. [2020-12-22 06:07:12,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 70953 states and 133126 transitions. [2020-12-22 06:07:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:07:12,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:12,066 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] [2020-12-22 06:07:12,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:07:12,066 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:12,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:12,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1698014757, now seen corresponding path program 1 times [2020-12-22 06:07:12,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:12,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322511271] [2020-12-22 06:07:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:12,171 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 06:07:12,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322511271] [2020-12-22 06:07:12,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:12,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:12,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341541536] [2020-12-22 06:07:12,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:12,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:12,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:12,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:12,176 INFO L87 Difference]: Start difference. First operand 70953 states and 133126 transitions. Second operand 5 states. [2020-12-22 06:07:17,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:17,674 INFO L93 Difference]: Finished difference Result 301067 states and 564810 transitions. [2020-12-22 06:07:17,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:07:17,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 06:07:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:18,821 INFO L225 Difference]: With dead ends: 301067 [2020-12-22 06:07:18,822 INFO L226 Difference]: Without dead ends: 244777 [2020-12-22 06:07:18,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 06:07:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244777 states. [2020-12-22 06:07:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244777 to 120214. [2020-12-22 06:07:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120214 states. [2020-12-22 06:07:23,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120214 states to 120214 states and 225123 transitions. [2020-12-22 06:07:23,846 INFO L78 Accepts]: Start accepts. Automaton has 120214 states and 225123 transitions. Word has length 61 [2020-12-22 06:07:23,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:23,847 INFO L481 AbstractCegarLoop]: Abstraction has 120214 states and 225123 transitions. [2020-12-22 06:07:23,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:23,847 INFO L276 IsEmpty]: Start isEmpty. Operand 120214 states and 225123 transitions. [2020-12-22 06:07:23,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:07:23,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:23,850 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] [2020-12-22 06:07:23,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:07:23,850 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:23,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:23,851 INFO L82 PathProgramCache]: Analyzing trace with hash 415453295, now seen corresponding path program 1 times [2020-12-22 06:07:23,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:23,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040437874] [2020-12-22 06:07:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:23,919 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 06:07:23,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040437874] [2020-12-22 06:07:23,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:23,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:23,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636752284] [2020-12-22 06:07:23,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:23,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:23,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:23,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:23,921 INFO L87 Difference]: Start difference. First operand 120214 states and 225123 transitions. Second operand 5 states. [2020-12-22 06:07:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:29,183 INFO L93 Difference]: Finished difference Result 294706 states and 550083 transitions. [2020-12-22 06:07:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:07:29,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 06:07:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:29,579 INFO L225 Difference]: With dead ends: 294706 [2020-12-22 06:07:29,580 INFO L226 Difference]: Without dead ends: 189560 [2020-12-22 06:07:29,687 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 06:07:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189560 states. [2020-12-22 06:07:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189560 to 120539. [2020-12-22 06:07:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120539 states. [2020-12-22 06:07:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120539 states to 120539 states and 225448 transitions. [2020-12-22 06:07:34,335 INFO L78 Accepts]: Start accepts. Automaton has 120539 states and 225448 transitions. Word has length 63 [2020-12-22 06:07:34,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:34,335 INFO L481 AbstractCegarLoop]: Abstraction has 120539 states and 225448 transitions. [2020-12-22 06:07:34,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand 120539 states and 225448 transitions. [2020-12-22 06:07:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:07:34,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:34,339 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] [2020-12-22 06:07:34,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:07:34,339 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:34,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:34,340 INFO L82 PathProgramCache]: Analyzing trace with hash -121421572, now seen corresponding path program 1 times [2020-12-22 06:07:34,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:34,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298348525] [2020-12-22 06:07:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:34,417 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 06:07:34,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298348525] [2020-12-22 06:07:34,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:34,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:07:34,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550079062] [2020-12-22 06:07:34,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:34,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:34,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:34,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:34,419 INFO L87 Difference]: Start difference. First operand 120539 states and 225448 transitions. Second operand 3 states. [2020-12-22 06:07:39,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:39,468 INFO L93 Difference]: Finished difference Result 274496 states and 512362 transitions. [2020-12-22 06:07:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:39,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:07:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:39,843 INFO L225 Difference]: With dead ends: 274496 [2020-12-22 06:07:39,844 INFO L226 Difference]: Without dead ends: 168443 [2020-12-22 06:07:39,953 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 06:07:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168443 states. [2020-12-22 06:07:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168443 to 167980. [2020-12-22 06:07:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167980 states. [2020-12-22 06:07:45,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167980 states to 167980 states and 310546 transitions. [2020-12-22 06:07:45,524 INFO L78 Accepts]: Start accepts. Automaton has 167980 states and 310546 transitions. Word has length 68 [2020-12-22 06:07:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:45,524 INFO L481 AbstractCegarLoop]: Abstraction has 167980 states and 310546 transitions. [2020-12-22 06:07:45,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 167980 states and 310546 transitions. [2020-12-22 06:07:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:07:45,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:45,529 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] [2020-12-22 06:07:45,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:07:45,529 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:45,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:45,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1705906673, now seen corresponding path program 1 times [2020-12-22 06:07:45,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:45,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683617523] [2020-12-22 06:07:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:45,615 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 06:07:45,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683617523] [2020-12-22 06:07:45,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:45,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:45,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012673699] [2020-12-22 06:07:45,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:45,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:45,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:45,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:45,619 INFO L87 Difference]: Start difference. First operand 167980 states and 310546 transitions. Second operand 5 states. [2020-12-22 06:07:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:54,710 INFO L93 Difference]: Finished difference Result 457257 states and 843815 transitions. [2020-12-22 06:07:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:07:54,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 06:07:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:55,410 INFO L225 Difference]: With dead ends: 457257 [2020-12-22 06:07:55,410 INFO L226 Difference]: Without dead ends: 303810 [2020-12-22 06:07:55,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:07:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303810 states. [2020-12-22 06:08:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303810 to 167980. [2020-12-22 06:08:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167980 states. [2020-12-22 06:08:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167980 states to 167980 states and 306592 transitions. [2020-12-22 06:08:02,766 INFO L78 Accepts]: Start accepts. Automaton has 167980 states and 306592 transitions. Word has length 70 [2020-12-22 06:08:02,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:02,766 INFO L481 AbstractCegarLoop]: Abstraction has 167980 states and 306592 transitions. [2020-12-22 06:08:02,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:02,767 INFO L276 IsEmpty]: Start isEmpty. Operand 167980 states and 306592 transitions. [2020-12-22 06:08:02,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:08:02,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:02,771 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 06:08:02,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:08:02,771 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:02,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:02,772 INFO L82 PathProgramCache]: Analyzing trace with hash -582323852, now seen corresponding path program 1 times [2020-12-22 06:08:02,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:02,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583120847] [2020-12-22 06:08:02,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:02,849 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 06:08:02,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583120847] [2020-12-22 06:08:02,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:02,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:02,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806309903] [2020-12-22 06:08:02,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:02,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:02,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:02,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:02,854 INFO L87 Difference]: Start difference. First operand 167980 states and 306592 transitions. Second operand 5 states. [2020-12-22 06:08:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:07,982 INFO L93 Difference]: Finished difference Result 279639 states and 510349 transitions. [2020-12-22 06:08:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:07,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 06:08:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:08,370 INFO L225 Difference]: With dead ends: 279639 [2020-12-22 06:08:08,371 INFO L226 Difference]: Without dead ends: 168123 [2020-12-22 06:08:08,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:08:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168123 states. [2020-12-22 06:08:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168123 to 167980. [2020-12-22 06:08:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167980 states. [2020-12-22 06:08:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167980 states to 167980 states and 306397 transitions. [2020-12-22 06:08:16,083 INFO L78 Accepts]: Start accepts. Automaton has 167980 states and 306397 transitions. Word has length 71 [2020-12-22 06:08:16,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:16,084 INFO L481 AbstractCegarLoop]: Abstraction has 167980 states and 306397 transitions. [2020-12-22 06:08:16,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:16,084 INFO L276 IsEmpty]: Start isEmpty. Operand 167980 states and 306397 transitions. [2020-12-22 06:08:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:08:16,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:16,103 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 06:08:16,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:08:16,104 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:16,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1169129866, now seen corresponding path program 1 times [2020-12-22 06:08:16,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:16,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416434974] [2020-12-22 06:08:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:16,272 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 06:08:16,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416434974] [2020-12-22 06:08:16,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:16,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:16,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467448407] [2020-12-22 06:08:16,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:16,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:16,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:16,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:16,278 INFO L87 Difference]: Start difference. First operand 167980 states and 306397 transitions. Second operand 3 states. [2020-12-22 06:08:26,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:26,063 INFO L93 Difference]: Finished difference Result 488646 states and 890492 transitions. [2020-12-22 06:08:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:26,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 06:08:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:26,819 INFO L225 Difference]: With dead ends: 488646 [2020-12-22 06:08:26,820 INFO L226 Difference]: Without dead ends: 334927 [2020-12-22 06:08:26,991 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 06:08:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334927 states. [2020-12-22 06:08:37,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334927 to 334927. [2020-12-22 06:08:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334927 states. [2020-12-22 06:08:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334927 states to 334927 states and 611009 transitions. [2020-12-22 06:08:39,253 INFO L78 Accepts]: Start accepts. Automaton has 334927 states and 611009 transitions. Word has length 71 [2020-12-22 06:08:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:39,254 INFO L481 AbstractCegarLoop]: Abstraction has 334927 states and 611009 transitions. [2020-12-22 06:08:39,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:08:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 334927 states and 611009 transitions. [2020-12-22 06:08:39,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:08:39,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:39,260 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 06:08:39,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:08:39,260 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:39,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:39,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1517593016, now seen corresponding path program 1 times [2020-12-22 06:08:39,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:39,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524432449] [2020-12-22 06:08:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:39,340 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 06:08:39,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524432449] [2020-12-22 06:08:39,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:39,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:39,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406680018] [2020-12-22 06:08:39,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:39,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:39,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:39,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:39,344 INFO L87 Difference]: Start difference. First operand 334927 states and 611009 transitions. Second operand 3 states. [2020-12-22 06:08:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:57,404 INFO L93 Difference]: Finished difference Result 974849 states and 1776520 transitions. [2020-12-22 06:08:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:57,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 06:08:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:59,477 INFO L225 Difference]: With dead ends: 974849 [2020-12-22 06:08:59,477 INFO L226 Difference]: Without dead ends: 667919 [2020-12-22 06:08:59,840 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 06:09:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667919 states. [2020-12-22 06:09:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667919 to 667917. [2020-12-22 06:09:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667917 states. [2020-12-22 06:09:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667917 states to 667917 states and 1218479 transitions. [2020-12-22 06:09:29,538 INFO L78 Accepts]: Start accepts. Automaton has 667917 states and 1218479 transitions. Word has length 73 [2020-12-22 06:09:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:29,539 INFO L481 AbstractCegarLoop]: Abstraction has 667917 states and 1218479 transitions. [2020-12-22 06:09:29,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 667917 states and 1218479 transitions. [2020-12-22 06:09:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:09:29,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:29,545 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 06:09:29,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:09:29,546 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:09:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:29,546 INFO L82 PathProgramCache]: Analyzing trace with hash -985322709, now seen corresponding path program 1 times [2020-12-22 06:09:29,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:29,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547939821] [2020-12-22 06:09:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:29,619 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 06:09:29,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547939821] [2020-12-22 06:09:29,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:29,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:29,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478593144] [2020-12-22 06:09:29,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:29,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:29,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:29,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:29,621 INFO L87 Difference]: Start difference. First operand 667917 states and 1218479 transitions. Second operand 3 states.