/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_spec14_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:55:35,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:55:35,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:55:35,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:55:35,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:55:35,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:55:35,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:55:35,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:55:35,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:55:35,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:55:35,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:55:35,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:55:35,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:55:35,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:55:35,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:55:35,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:55:35,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:55:35,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:55:35,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:55:35,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:55:35,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:55:35,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:55:35,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:55:35,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:55:35,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:55:35,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:55:35,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:55:35,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:55:35,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:55:35,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:55:35,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:55:35,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:55:35,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:55:35,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:55:35,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:55:35,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:55:35,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:55:35,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:55:35,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:55:35,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:55:35,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:55:35,625 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:55:35,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:55:35,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:55:35,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:55:35,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:55:35,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:55:35,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:55:35,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:55:35,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:55:35,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:55:35,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:55:35,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:55:35,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:55:35,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:55:35,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:55:35,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:55:35,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:55:35,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:55:35,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:55:35,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:55:35,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:55:35,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:55:36,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:55:36,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:55:36,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:55:36,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:55:36,112 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:55:36,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c [2020-12-22 05:55:36,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8aca1c02/d0bd01da13184afc84e9954f26aec4ed/FLAG128fa206e [2020-12-22 05:55:37,041 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:55:37,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c [2020-12-22 05:55:37,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8aca1c02/d0bd01da13184afc84e9954f26aec4ed/FLAG128fa206e [2020-12-22 05:55:37,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8aca1c02/d0bd01da13184afc84e9954f26aec4ed [2020-12-22 05:55:37,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:55:37,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:55:37,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:37,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:55:37,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:55:37,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:37" (1/1) ... [2020-12-22 05:55:37,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635a8c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:37, skipping insertion in model container [2020-12-22 05:55:37,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:37" (1/1) ... [2020-12-22 05:55:37,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:55:37,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:55:37,970 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_spec14_product20.cil.c[69663,69676] [2020-12-22 05:55:37,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:38,002 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:55:38,148 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_spec14_product20.cil.c[69663,69676] [2020-12-22 05:55:38,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:38,209 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:55:38,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38 WrapperNode [2020-12-22 05:55:38,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:38,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:38,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:55:38,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:55:38,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... [2020-12-22 05:55:38,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... [2020-12-22 05:55:39,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:39,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:55:39,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:55:39,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:55:39,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... [2020-12-22 05:55:39,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... [2020-12-22 05:55:39,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... [2020-12-22 05:55:39,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... [2020-12-22 05:55:39,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... [2020-12-22 05:55:40,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... [2020-12-22 05:55:40,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... [2020-12-22 05:55:40,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:55:40,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:55:40,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:55:40,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:55:40,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:55:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:55:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:55:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:55:40,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:56:03,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:56:03,348 INFO L299 CfgBuilder]: Removed 2663 assume(true) statements. [2020-12-22 05:56:03,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:56:03 BoogieIcfgContainer [2020-12-22 05:56:03,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:56:03,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:56:03,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:56:03,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:56:03,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:55:37" (1/3) ... [2020-12-22 05:56:03,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289398db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:56:03, skipping insertion in model container [2020-12-22 05:56:03,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:38" (2/3) ... [2020-12-22 05:56:03,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289398db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:56:03, skipping insertion in model container [2020-12-22 05:56:03,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:56:03" (3/3) ... [2020-12-22 05:56:03,371 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product20.cil.c [2020-12-22 05:56:03,378 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:56:03,388 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:56:03,409 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:56:03,480 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:56:03,480 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:56:03,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:56:03,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:56:03,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:56:03,481 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:56:03,481 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:56:03,481 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:56:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states. [2020-12-22 05:56:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:56:03,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:03,647 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] [2020-12-22 05:56:03,648 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 05:56:03,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:03,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1171467047, now seen corresponding path program 1 times [2020-12-22 05:56:03,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:03,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128774137] [2020-12-22 05:56:03,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:04,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128774137] [2020-12-22 05:56:04,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:04,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:04,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326612249] [2020-12-22 05:56:04,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:04,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:04,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:04,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:04,226 INFO L87 Difference]: Start difference. First operand 11587 states. Second operand 3 states. [2020-12-22 05:56:05,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:05,367 INFO L93 Difference]: Finished difference Result 27830 states and 52550 transitions. [2020-12-22 05:56:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:05,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 05:56:05,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:05,507 INFO L225 Difference]: With dead ends: 27830 [2020-12-22 05:56:05,507 INFO L226 Difference]: Without dead ends: 16247 [2020-12-22 05:56:05,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:05,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16247 states. [2020-12-22 05:56:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16247 to 11583. [2020-12-22 05:56:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11583 states. [2020-12-22 05:56:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11583 states to 11583 states and 21859 transitions. [2020-12-22 05:56:06,278 INFO L78 Accepts]: Start accepts. Automaton has 11583 states and 21859 transitions. Word has length 27 [2020-12-22 05:56:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:06,279 INFO L481 AbstractCegarLoop]: Abstraction has 11583 states and 21859 transitions. [2020-12-22 05:56:06,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11583 states and 21859 transitions. [2020-12-22 05:56:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:56:06,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:06,290 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] [2020-12-22 05:56:06,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:56:06,292 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 05:56:06,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash -19051931, now seen corresponding path program 1 times [2020-12-22 05:56:06,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:06,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288437889] [2020-12-22 05:56:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:06,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288437889] [2020-12-22 05:56:06,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:06,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:06,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870832460] [2020-12-22 05:56:06,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:06,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:06,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:06,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:06,506 INFO L87 Difference]: Start difference. First operand 11583 states and 21859 transitions. Second operand 4 states. [2020-12-22 05:56:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:07,707 INFO L93 Difference]: Finished difference Result 32383 states and 61112 transitions. [2020-12-22 05:56:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:07,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-12-22 05:56:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:07,810 INFO L225 Difference]: With dead ends: 32383 [2020-12-22 05:56:07,811 INFO L226 Difference]: Without dead ends: 20821 [2020-12-22 05:56:07,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20821 states. [2020-12-22 05:56:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20821 to 11559. [2020-12-22 05:56:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11559 states. [2020-12-22 05:56:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 21806 transitions. [2020-12-22 05:56:08,470 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 21806 transitions. Word has length 32 [2020-12-22 05:56:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:08,471 INFO L481 AbstractCegarLoop]: Abstraction has 11559 states and 21806 transitions. [2020-12-22 05:56:08,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:08,471 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 21806 transitions. [2020-12-22 05:56:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:56:08,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:08,473 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] [2020-12-22 05:56:08,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:56:08,474 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 05:56:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:08,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1898000965, now seen corresponding path program 1 times [2020-12-22 05:56:08,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:08,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624033186] [2020-12-22 05:56:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:08,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624033186] [2020-12-22 05:56:08,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:08,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:08,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817016366] [2020-12-22 05:56:08,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:08,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:08,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:08,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:08,575 INFO L87 Difference]: Start difference. First operand 11559 states and 21806 transitions. Second operand 4 states. [2020-12-22 05:56:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:10,162 INFO L93 Difference]: Finished difference Result 36990 states and 69790 transitions. [2020-12-22 05:56:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:10,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 05:56:10,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:10,251 INFO L225 Difference]: With dead ends: 36990 [2020-12-22 05:56:10,252 INFO L226 Difference]: Without dead ends: 25452 [2020-12-22 05:56:10,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25452 states. [2020-12-22 05:56:10,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25452 to 11559. [2020-12-22 05:56:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11559 states. [2020-12-22 05:56:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 21805 transitions. [2020-12-22 05:56:10,912 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 21805 transitions. Word has length 33 [2020-12-22 05:56:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:10,912 INFO L481 AbstractCegarLoop]: Abstraction has 11559 states and 21805 transitions. [2020-12-22 05:56:10,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 21805 transitions. [2020-12-22 05:56:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:56:10,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:10,914 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] [2020-12-22 05:56:10,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:56:10,914 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 05:56:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:10,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1521825890, now seen corresponding path program 1 times [2020-12-22 05:56:10,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:10,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148119190] [2020-12-22 05:56:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:11,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148119190] [2020-12-22 05:56:11,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:11,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:11,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756530512] [2020-12-22 05:56:11,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:11,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:11,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:11,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:11,009 INFO L87 Difference]: Start difference. First operand 11559 states and 21805 transitions. Second operand 4 states. [2020-12-22 05:56:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:11,952 INFO L93 Difference]: Finished difference Result 27734 states and 52329 transitions. [2020-12-22 05:56:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:11,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 05:56:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:12,017 INFO L225 Difference]: With dead ends: 27734 [2020-12-22 05:56:12,017 INFO L226 Difference]: Without dead ends: 16196 [2020-12-22 05:56:12,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16196 states. [2020-12-22 05:56:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16196 to 11559. [2020-12-22 05:56:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11559 states. [2020-12-22 05:56:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 21799 transitions. [2020-12-22 05:56:12,593 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 21799 transitions. Word has length 34 [2020-12-22 05:56:12,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:12,593 INFO L481 AbstractCegarLoop]: Abstraction has 11559 states and 21799 transitions. [2020-12-22 05:56:12,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 21799 transitions. [2020-12-22 05:56:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:56:12,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:12,597 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] [2020-12-22 05:56:12,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:56:12,597 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 05:56:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2054905984, now seen corresponding path program 1 times [2020-12-22 05:56:12,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:12,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353817310] [2020-12-22 05:56:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:12,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353817310] [2020-12-22 05:56:12,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:12,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:12,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343817144] [2020-12-22 05:56:12,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:12,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:12,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:12,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:12,704 INFO L87 Difference]: Start difference. First operand 11559 states and 21799 transitions. Second operand 4 states. [2020-12-22 05:56:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:13,596 INFO L93 Difference]: Finished difference Result 27734 states and 52317 transitions. [2020-12-22 05:56:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:13,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 05:56:13,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:13,647 INFO L225 Difference]: With dead ends: 27734 [2020-12-22 05:56:13,648 INFO L226 Difference]: Without dead ends: 16196 [2020-12-22 05:56:13,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16196 states. [2020-12-22 05:56:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16196 to 11559. [2020-12-22 05:56:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11559 states. [2020-12-22 05:56:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 21793 transitions. [2020-12-22 05:56:14,289 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 21793 transitions. Word has length 35 [2020-12-22 05:56:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:14,289 INFO L481 AbstractCegarLoop]: Abstraction has 11559 states and 21793 transitions. [2020-12-22 05:56:14,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:14,290 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 21793 transitions. [2020-12-22 05:56:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:56:14,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:14,291 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] [2020-12-22 05:56:14,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:56:14,291 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 05:56:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:14,292 INFO L82 PathProgramCache]: Analyzing trace with hash 710125245, now seen corresponding path program 1 times [2020-12-22 05:56:14,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:14,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843174303] [2020-12-22 05:56:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:14,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843174303] [2020-12-22 05:56:14,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:14,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:14,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27856375] [2020-12-22 05:56:14,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:14,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:14,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:14,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:14,389 INFO L87 Difference]: Start difference. First operand 11559 states and 21793 transitions. Second operand 4 states. [2020-12-22 05:56:15,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:15,260 INFO L93 Difference]: Finished difference Result 27734 states and 52305 transitions. [2020-12-22 05:56:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:15,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 05:56:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:15,305 INFO L225 Difference]: With dead ends: 27734 [2020-12-22 05:56:15,306 INFO L226 Difference]: Without dead ends: 16196 [2020-12-22 05:56:15,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16196 states. [2020-12-22 05:56:15,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16196 to 11559. [2020-12-22 05:56:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11559 states. [2020-12-22 05:56:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 21787 transitions. [2020-12-22 05:56:15,839 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 21787 transitions. Word has length 36 [2020-12-22 05:56:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:15,840 INFO L481 AbstractCegarLoop]: Abstraction has 11559 states and 21787 transitions. [2020-12-22 05:56:15,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 21787 transitions. [2020-12-22 05:56:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:56:15,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:15,842 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] [2020-12-22 05:56:15,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:56:15,844 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 05:56:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1281200827, now seen corresponding path program 1 times [2020-12-22 05:56:15,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:15,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132191086] [2020-12-22 05:56:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:15,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132191086] [2020-12-22 05:56:15,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:15,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:15,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462567556] [2020-12-22 05:56:15,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:15,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:15,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:15,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:15,912 INFO L87 Difference]: Start difference. First operand 11559 states and 21787 transitions. Second operand 4 states. [2020-12-22 05:56:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:16,734 INFO L93 Difference]: Finished difference Result 27734 states and 52293 transitions. [2020-12-22 05:56:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:16,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 05:56:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:16,781 INFO L225 Difference]: With dead ends: 27734 [2020-12-22 05:56:16,782 INFO L226 Difference]: Without dead ends: 16196 [2020-12-22 05:56:16,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16196 states. [2020-12-22 05:56:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16196 to 11559. [2020-12-22 05:56:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11559 states. [2020-12-22 05:56:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 21781 transitions. [2020-12-22 05:56:17,246 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 21781 transitions. Word has length 37 [2020-12-22 05:56:17,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:17,246 INFO L481 AbstractCegarLoop]: Abstraction has 11559 states and 21781 transitions. [2020-12-22 05:56:17,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 21781 transitions. [2020-12-22 05:56:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:56:17,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:17,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:17,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:56:17,250 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 05:56:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:17,251 INFO L82 PathProgramCache]: Analyzing trace with hash -879864490, now seen corresponding path program 1 times [2020-12-22 05:56:17,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:17,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76049273] [2020-12-22 05:56:17,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:17,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76049273] [2020-12-22 05:56:17,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:17,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:17,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372425366] [2020-12-22 05:56:17,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:17,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:17,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:17,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:17,439 INFO L87 Difference]: Start difference. First operand 11559 states and 21781 transitions. Second operand 3 states. [2020-12-22 05:56:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:17,985 INFO L93 Difference]: Finished difference Result 27725 states and 52270 transitions. [2020-12-22 05:56:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:17,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-22 05:56:17,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:18,200 INFO L225 Difference]: With dead ends: 27725 [2020-12-22 05:56:18,200 INFO L226 Difference]: Without dead ends: 16187 [2020-12-22 05:56:18,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16187 states. [2020-12-22 05:56:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16187 to 11559. [2020-12-22 05:56:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11559 states. [2020-12-22 05:56:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 21780 transitions. [2020-12-22 05:56:18,624 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 21780 transitions. Word has length 38 [2020-12-22 05:56:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:18,624 INFO L481 AbstractCegarLoop]: Abstraction has 11559 states and 21780 transitions. [2020-12-22 05:56:18,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 21780 transitions. [2020-12-22 05:56:18,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:56:18,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:18,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:18,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:56:18,627 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 05:56:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:18,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1114280216, now seen corresponding path program 1 times [2020-12-22 05:56:18,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:18,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673801226] [2020-12-22 05:56:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:18,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673801226] [2020-12-22 05:56:18,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:18,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:18,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307458243] [2020-12-22 05:56:18,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:18,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:18,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:18,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:18,709 INFO L87 Difference]: Start difference. First operand 11559 states and 21780 transitions. Second operand 4 states. [2020-12-22 05:56:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:19,809 INFO L93 Difference]: Finished difference Result 32341 states and 60977 transitions. [2020-12-22 05:56:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:19,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-22 05:56:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:19,870 INFO L225 Difference]: With dead ends: 32341 [2020-12-22 05:56:19,870 INFO L226 Difference]: Without dead ends: 20809 [2020-12-22 05:56:19,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:19,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20809 states. [2020-12-22 05:56:20,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20809 to 11561. [2020-12-22 05:56:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11561 states. [2020-12-22 05:56:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11561 states to 11561 states and 21781 transitions. [2020-12-22 05:56:20,438 INFO L78 Accepts]: Start accepts. Automaton has 11561 states and 21781 transitions. Word has length 38 [2020-12-22 05:56:20,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:20,439 INFO L481 AbstractCegarLoop]: Abstraction has 11561 states and 21781 transitions. [2020-12-22 05:56:20,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:20,439 INFO L276 IsEmpty]: Start isEmpty. Operand 11561 states and 21781 transitions. [2020-12-22 05:56:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:56:20,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:20,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:20,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:56:20,440 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 05:56:20,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:20,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1151608282, now seen corresponding path program 1 times [2020-12-22 05:56:20,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:20,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884222418] [2020-12-22 05:56:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:20,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884222418] [2020-12-22 05:56:20,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:20,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:20,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356885411] [2020-12-22 05:56:20,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:20,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:20,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:20,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:20,656 INFO L87 Difference]: Start difference. First operand 11561 states and 21781 transitions. Second operand 3 states. [2020-12-22 05:56:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:22,398 INFO L93 Difference]: Finished difference Result 31639 states and 59651 transitions. [2020-12-22 05:56:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:22,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 05:56:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:22,452 INFO L225 Difference]: With dead ends: 31639 [2020-12-22 05:56:22,452 INFO L226 Difference]: Without dead ends: 22375 [2020-12-22 05:56:22,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22375 states. [2020-12-22 05:56:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22375 to 17413. [2020-12-22 05:56:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17413 states. [2020-12-22 05:56:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 32757 transitions. [2020-12-22 05:56:23,188 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 32757 transitions. Word has length 39 [2020-12-22 05:56:23,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:23,188 INFO L481 AbstractCegarLoop]: Abstraction has 17413 states and 32757 transitions. [2020-12-22 05:56:23,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 32757 transitions. [2020-12-22 05:56:23,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 05:56:23,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:23,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:23,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:56:23,194 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 05:56:23,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:23,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1197533483, now seen corresponding path program 1 times [2020-12-22 05:56:23,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:23,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217995339] [2020-12-22 05:56:23,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:23,272 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 05:56:23,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217995339] [2020-12-22 05:56:23,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:23,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:23,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759580246] [2020-12-22 05:56:23,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:23,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:23,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:23,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:23,274 INFO L87 Difference]: Start difference. First operand 17413 states and 32757 transitions. Second operand 5 states. [2020-12-22 05:56:24,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:24,580 INFO L93 Difference]: Finished difference Result 40077 states and 74957 transitions. [2020-12-22 05:56:24,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:56:24,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 05:56:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:24,634 INFO L225 Difference]: With dead ends: 40077 [2020-12-22 05:56:24,635 INFO L226 Difference]: Without dead ends: 23827 [2020-12-22 05:56:24,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:56:24,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23827 states. [2020-12-22 05:56:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23827 to 16308. [2020-12-22 05:56:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16308 states. [2020-12-22 05:56:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16308 states to 16308 states and 30497 transitions. [2020-12-22 05:56:25,448 INFO L78 Accepts]: Start accepts. Automaton has 16308 states and 30497 transitions. Word has length 58 [2020-12-22 05:56:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:25,448 INFO L481 AbstractCegarLoop]: Abstraction has 16308 states and 30497 transitions. [2020-12-22 05:56:25,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 16308 states and 30497 transitions. [2020-12-22 05:56:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:56:25,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:25,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:25,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:56:25,452 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 05:56:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:25,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1097528231, now seen corresponding path program 1 times [2020-12-22 05:56:25,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:25,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422133533] [2020-12-22 05:56:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:25,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422133533] [2020-12-22 05:56:25,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:25,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:25,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517440616] [2020-12-22 05:56:25,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:25,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:25,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:25,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:25,524 INFO L87 Difference]: Start difference. First operand 16308 states and 30497 transitions. Second operand 4 states. [2020-12-22 05:56:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:30,637 INFO L93 Difference]: Finished difference Result 45464 states and 85178 transitions. [2020-12-22 05:56:30,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:30,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 05:56:30,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:30,692 INFO L225 Difference]: With dead ends: 45464 [2020-12-22 05:56:30,692 INFO L226 Difference]: Without dead ends: 29192 [2020-12-22 05:56:30,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29192 states. [2020-12-22 05:56:31,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29192 to 16308. [2020-12-22 05:56:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16308 states. [2020-12-22 05:56:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16308 states to 16308 states and 29787 transitions. [2020-12-22 05:56:31,528 INFO L78 Accepts]: Start accepts. Automaton has 16308 states and 29787 transitions. Word has length 59 [2020-12-22 05:56:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:31,528 INFO L481 AbstractCegarLoop]: Abstraction has 16308 states and 29787 transitions. [2020-12-22 05:56:31,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 16308 states and 29787 transitions. [2020-12-22 05:56:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:56:31,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:31,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:31,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:56:31,532 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 05:56:31,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:31,533 INFO L82 PathProgramCache]: Analyzing trace with hash -705886877, now seen corresponding path program 1 times [2020-12-22 05:56:31,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:31,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753763068] [2020-12-22 05:56:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:31,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753763068] [2020-12-22 05:56:31,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:31,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:31,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545267863] [2020-12-22 05:56:31,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:31,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:31,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:31,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:31,639 INFO L87 Difference]: Start difference. First operand 16308 states and 29787 transitions. Second operand 3 states. [2020-12-22 05:56:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:33,031 INFO L93 Difference]: Finished difference Result 45038 states and 82311 transitions. [2020-12-22 05:56:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:33,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 05:56:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:33,083 INFO L225 Difference]: With dead ends: 45038 [2020-12-22 05:56:33,083 INFO L226 Difference]: Without dead ends: 30600 [2020-12-22 05:56:33,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30600 states. [2020-12-22 05:56:34,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30600 to 30562. [2020-12-22 05:56:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30562 states. [2020-12-22 05:56:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30562 states to 30562 states and 55797 transitions. [2020-12-22 05:56:34,456 INFO L78 Accepts]: Start accepts. Automaton has 30562 states and 55797 transitions. Word has length 71 [2020-12-22 05:56:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:34,457 INFO L481 AbstractCegarLoop]: Abstraction has 30562 states and 55797 transitions. [2020-12-22 05:56:34,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 30562 states and 55797 transitions. [2020-12-22 05:56:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 05:56:34,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:34,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:34,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:56:34,462 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 05:56:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:34,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2123749594, now seen corresponding path program 1 times [2020-12-22 05:56:34,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:34,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004871201] [2020-12-22 05:56:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:34,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004871201] [2020-12-22 05:56:34,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:34,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:34,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873207713] [2020-12-22 05:56:34,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:34,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:34,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:34,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:34,546 INFO L87 Difference]: Start difference. First operand 30562 states and 55797 transitions. Second operand 5 states. [2020-12-22 05:56:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:38,086 INFO L93 Difference]: Finished difference Result 85992 states and 156855 transitions. [2020-12-22 05:56:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:56:38,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 05:56:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:38,196 INFO L225 Difference]: With dead ends: 85992 [2020-12-22 05:56:38,196 INFO L226 Difference]: Without dead ends: 60952 [2020-12-22 05:56:38,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:56:38,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60952 states. [2020-12-22 05:56:39,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60952 to 30562. [2020-12-22 05:56:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30562 states. [2020-12-22 05:56:39,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30562 states to 30562 states and 55721 transitions. [2020-12-22 05:56:39,606 INFO L78 Accepts]: Start accepts. Automaton has 30562 states and 55721 transitions. Word has length 72 [2020-12-22 05:56:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:39,607 INFO L481 AbstractCegarLoop]: Abstraction has 30562 states and 55721 transitions. [2020-12-22 05:56:39,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 30562 states and 55721 transitions. [2020-12-22 05:56:39,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 05:56:39,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:39,610 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] [2020-12-22 05:56:39,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:56:39,610 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 05:56:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:39,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1102681240, now seen corresponding path program 1 times [2020-12-22 05:56:39,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:39,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120927583] [2020-12-22 05:56:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:39,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120927583] [2020-12-22 05:56:39,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:39,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:39,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761292879] [2020-12-22 05:56:39,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:39,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:39,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:39,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:39,711 INFO L87 Difference]: Start difference. First operand 30562 states and 55721 transitions. Second operand 5 states. [2020-12-22 05:56:42,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:42,756 INFO L93 Difference]: Finished difference Result 106836 states and 195146 transitions. [2020-12-22 05:56:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:42,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 05:56:42,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:43,023 INFO L225 Difference]: With dead ends: 106836 [2020-12-22 05:56:43,023 INFO L226 Difference]: Without dead ends: 83206 [2020-12-22 05:56:43,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:56:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83206 states. [2020-12-22 05:56:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83206 to 30562. [2020-12-22 05:56:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30562 states. [2020-12-22 05:56:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30562 states to 30562 states and 55675 transitions. [2020-12-22 05:56:44,619 INFO L78 Accepts]: Start accepts. Automaton has 30562 states and 55675 transitions. Word has length 72 [2020-12-22 05:56:44,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:44,619 INFO L481 AbstractCegarLoop]: Abstraction has 30562 states and 55675 transitions. [2020-12-22 05:56:44,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:44,619 INFO L276 IsEmpty]: Start isEmpty. Operand 30562 states and 55675 transitions. [2020-12-22 05:56:44,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 05:56:44,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:44,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:44,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:56:44,627 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 05:56:44,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:44,627 INFO L82 PathProgramCache]: Analyzing trace with hash -542565266, now seen corresponding path program 1 times [2020-12-22 05:56:44,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:44,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585792798] [2020-12-22 05:56:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:44,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585792798] [2020-12-22 05:56:44,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:44,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:44,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520552373] [2020-12-22 05:56:44,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:44,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:44,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:44,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:44,696 INFO L87 Difference]: Start difference. First operand 30562 states and 55675 transitions. Second operand 4 states. [2020-12-22 05:56:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:46,485 INFO L93 Difference]: Finished difference Result 69145 states and 125143 transitions. [2020-12-22 05:56:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:46,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-12-22 05:56:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:46,647 INFO L225 Difference]: With dead ends: 69145 [2020-12-22 05:56:46,648 INFO L226 Difference]: Without dead ends: 40009 [2020-12-22 05:56:46,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40009 states. [2020-12-22 05:56:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40009 to 30648. [2020-12-22 05:56:47,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30648 states. [2020-12-22 05:56:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30648 states to 30648 states and 55761 transitions. [2020-12-22 05:56:47,819 INFO L78 Accepts]: Start accepts. Automaton has 30648 states and 55761 transitions. Word has length 95 [2020-12-22 05:56:47,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:47,819 INFO L481 AbstractCegarLoop]: Abstraction has 30648 states and 55761 transitions. [2020-12-22 05:56:47,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 30648 states and 55761 transitions. [2020-12-22 05:56:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 05:56:47,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:47,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:47,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:56:47,827 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 05:56:47,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:47,827 INFO L82 PathProgramCache]: Analyzing trace with hash -90582770, now seen corresponding path program 1 times [2020-12-22 05:56:47,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:47,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468769868] [2020-12-22 05:56:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:48,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468769868] [2020-12-22 05:56:48,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:48,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:48,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119237519] [2020-12-22 05:56:48,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:48,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:48,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:48,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:48,049 INFO L87 Difference]: Start difference. First operand 30648 states and 55761 transitions. Second operand 5 states. [2020-12-22 05:57:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:01,389 INFO L93 Difference]: Finished difference Result 163061 states and 298287 transitions. [2020-12-22 05:57:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:57:01,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-12-22 05:57:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:01,749 INFO L225 Difference]: With dead ends: 163061 [2020-12-22 05:57:01,750 INFO L226 Difference]: Without dead ends: 132484 [2020-12-22 05:57:01,805 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 05:57:01,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132484 states. [2020-12-22 05:57:04,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132484 to 46044. [2020-12-22 05:57:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46044 states. [2020-12-22 05:57:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46044 states to 46044 states and 83525 transitions. [2020-12-22 05:57:04,547 INFO L78 Accepts]: Start accepts. Automaton has 46044 states and 83525 transitions. Word has length 97 [2020-12-22 05:57:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:04,548 INFO L481 AbstractCegarLoop]: Abstraction has 46044 states and 83525 transitions. [2020-12-22 05:57:04,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:04,548 INFO L276 IsEmpty]: Start isEmpty. Operand 46044 states and 83525 transitions. [2020-12-22 05:57:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 05:57:04,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:04,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:04,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:57:04,554 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 05:57:04,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:04,555 INFO L82 PathProgramCache]: Analyzing trace with hash 551267609, now seen corresponding path program 1 times [2020-12-22 05:57:04,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:04,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954043544] [2020-12-22 05:57:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:04,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954043544] [2020-12-22 05:57:04,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:04,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:04,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501575849] [2020-12-22 05:57:04,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:04,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:04,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:04,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:04,643 INFO L87 Difference]: Start difference. First operand 46044 states and 83525 transitions. Second operand 4 states. [2020-12-22 05:57:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:15,628 INFO L93 Difference]: Finished difference Result 138933 states and 253275 transitions. [2020-12-22 05:57:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:15,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-22 05:57:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:15,785 INFO L225 Difference]: With dead ends: 138933 [2020-12-22 05:57:15,785 INFO L226 Difference]: Without dead ends: 92934 [2020-12-22 05:57:15,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92934 states. [2020-12-22 05:57:18,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92934 to 56413. [2020-12-22 05:57:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56413 states. [2020-12-22 05:57:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56413 states to 56413 states and 100993 transitions. [2020-12-22 05:57:18,747 INFO L78 Accepts]: Start accepts. Automaton has 56413 states and 100993 transitions. Word has length 98 [2020-12-22 05:57:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:18,747 INFO L481 AbstractCegarLoop]: Abstraction has 56413 states and 100993 transitions. [2020-12-22 05:57:18,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:18,747 INFO L276 IsEmpty]: Start isEmpty. Operand 56413 states and 100993 transitions. [2020-12-22 05:57:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 05:57:18,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:18,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:18,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:57:18,754 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 05:57:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:18,755 INFO L82 PathProgramCache]: Analyzing trace with hash -825319023, now seen corresponding path program 1 times [2020-12-22 05:57:18,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:18,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706305498] [2020-12-22 05:57:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:18,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706305498] [2020-12-22 05:57:18,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:18,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:18,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372083599] [2020-12-22 05:57:18,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:18,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:18,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:18,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:18,836 INFO L87 Difference]: Start difference. First operand 56413 states and 100993 transitions. Second operand 5 states. [2020-12-22 05:57:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:33,201 INFO L93 Difference]: Finished difference Result 399772 states and 719505 transitions. [2020-12-22 05:57:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:57:33,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 05:57:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:33,977 INFO L225 Difference]: With dead ends: 399772 [2020-12-22 05:57:33,977 INFO L226 Difference]: Without dead ends: 343422 [2020-12-22 05:57:34,094 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 05:57:34,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343422 states. [2020-12-22 05:57:40,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343422 to 90461. [2020-12-22 05:57:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90461 states. [2020-12-22 05:57:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90461 states to 90461 states and 162331 transitions. [2020-12-22 05:57:40,784 INFO L78 Accepts]: Start accepts. Automaton has 90461 states and 162331 transitions. Word has length 100 [2020-12-22 05:57:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:40,784 INFO L481 AbstractCegarLoop]: Abstraction has 90461 states and 162331 transitions. [2020-12-22 05:57:40,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 90461 states and 162331 transitions. [2020-12-22 05:57:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 05:57:40,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:40,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:40,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:57:40,792 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 05:57:40,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash -264619245, now seen corresponding path program 1 times [2020-12-22 05:57:40,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:40,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652459137] [2020-12-22 05:57:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:40,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652459137] [2020-12-22 05:57:40,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:40,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:40,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916378827] [2020-12-22 05:57:40,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:40,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:40,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:40,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:40,901 INFO L87 Difference]: Start difference. First operand 90461 states and 162331 transitions. Second operand 5 states. [2020-12-22 05:57:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:48,892 INFO L93 Difference]: Finished difference Result 230546 states and 405428 transitions. [2020-12-22 05:57:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:57:48,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 05:57:48,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:49,284 INFO L225 Difference]: With dead ends: 230546 [2020-12-22 05:57:49,284 INFO L226 Difference]: Without dead ends: 141849 [2020-12-22 05:57:49,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:57:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141849 states. [2020-12-22 05:57:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141849 to 90687. [2020-12-22 05:57:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90687 states. [2020-12-22 05:57:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90687 states to 90687 states and 162557 transitions. [2020-12-22 05:57:54,233 INFO L78 Accepts]: Start accepts. Automaton has 90687 states and 162557 transitions. Word has length 100 [2020-12-22 05:57:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:54,233 INFO L481 AbstractCegarLoop]: Abstraction has 90687 states and 162557 transitions. [2020-12-22 05:57:54,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 90687 states and 162557 transitions. [2020-12-22 05:57:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 05:57:54,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:54,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:54,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:57:54,239 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 05:57:54,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:54,240 INFO L82 PathProgramCache]: Analyzing trace with hash -369457898, now seen corresponding path program 1 times [2020-12-22 05:57:54,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:54,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730055817] [2020-12-22 05:57:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:54,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730055817] [2020-12-22 05:57:54,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:54,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:54,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485362076] [2020-12-22 05:57:54,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:54,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:54,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:54,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:54,309 INFO L87 Difference]: Start difference. First operand 90687 states and 162557 transitions. Second operand 4 states. [2020-12-22 05:58:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:05,734 INFO L93 Difference]: Finished difference Result 235061 states and 420523 transitions. [2020-12-22 05:58:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:05,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-12-22 05:58:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:06,011 INFO L225 Difference]: With dead ends: 235061 [2020-12-22 05:58:06,011 INFO L226 Difference]: Without dead ends: 144423 [2020-12-22 05:58:06,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144423 states. [2020-12-22 05:58:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144423 to 72421. [2020-12-22 05:58:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72421 states. [2020-12-22 05:58:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72421 states to 72421 states and 129623 transitions. [2020-12-22 05:58:10,695 INFO L78 Accepts]: Start accepts. Automaton has 72421 states and 129623 transitions. Word has length 101 [2020-12-22 05:58:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:10,695 INFO L481 AbstractCegarLoop]: Abstraction has 72421 states and 129623 transitions. [2020-12-22 05:58:10,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 72421 states and 129623 transitions. [2020-12-22 05:58:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 05:58:10,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:10,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:10,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:58:10,710 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:10,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1499591274, now seen corresponding path program 1 times [2020-12-22 05:58:10,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:10,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165454974] [2020-12-22 05:58:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:10,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165454974] [2020-12-22 05:58:10,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:10,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:58:10,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614991180] [2020-12-22 05:58:10,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:58:10,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:10,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:58:10,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:58:10,848 INFO L87 Difference]: Start difference. First operand 72421 states and 129623 transitions. Second operand 9 states. [2020-12-22 05:58:47,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:47,358 INFO L93 Difference]: Finished difference Result 687476 states and 1267743 transitions. [2020-12-22 05:58:47,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-22 05:58:47,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-12-22 05:58:47,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:49,150 INFO L225 Difference]: With dead ends: 687476 [2020-12-22 05:58:49,150 INFO L226 Difference]: Without dead ends: 615123 [2020-12-22 05:58:49,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 05:58:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615123 states. [2020-12-22 05:59:00,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615123 to 126335. [2020-12-22 05:59:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126335 states. [2020-12-22 05:59:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126335 states to 126335 states and 227329 transitions. [2020-12-22 05:59:01,037 INFO L78 Accepts]: Start accepts. Automaton has 126335 states and 227329 transitions. Word has length 139 [2020-12-22 05:59:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:01,038 INFO L481 AbstractCegarLoop]: Abstraction has 126335 states and 227329 transitions. [2020-12-22 05:59:01,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:59:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 126335 states and 227329 transitions. [2020-12-22 05:59:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 05:59:01,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:01,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:01,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:59:01,069 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:01,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1108775888, now seen corresponding path program 1 times [2020-12-22 05:59:01,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:01,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595214185] [2020-12-22 05:59:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:01,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595214185] [2020-12-22 05:59:01,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:01,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:01,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757515396] [2020-12-22 05:59:01,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:01,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:01,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:01,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:01,158 INFO L87 Difference]: Start difference. First operand 126335 states and 227329 transitions. Second operand 5 states.