/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_spec1_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:59:49,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:59:49,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:59:49,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:59:49,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:59:49,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:59:49,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:59:49,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:59:49,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:59:49,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:59:49,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:59:49,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:59:49,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:59:49,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:59:49,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:59:49,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:59:49,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:59:49,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:59:49,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:59:49,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:59:49,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:59:49,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:59:49,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:59:49,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:59:49,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:59:49,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:59:49,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:59:49,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:59:49,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:59:49,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:59:49,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:59:49,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:59:49,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:59:49,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:59:49,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:59:49,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:59:49,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:59:49,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:59:49,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:59:49,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:59:49,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:59:49,520 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:59:49,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:59:49,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:59:49,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:59:49,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:59:49,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:59:49,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:59:49,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:59:49,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:59:49,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:59:49,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:59:49,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:59:49,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:59:49,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:49,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:59:49,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:59:49,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:59:49,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:59:49,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:59:49,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:59:49,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:59:49,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:59:49,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:59:50,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:59:50,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:59:50,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:59:50,024 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:59:50,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2020-12-22 05:59:50,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/587b6ea6a/055fad425ac74cd1bf63941ae07fda70/FLAG8470f6b3a [2020-12-22 05:59:51,119 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:59:51,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2020-12-22 05:59:51,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/587b6ea6a/055fad425ac74cd1bf63941ae07fda70/FLAG8470f6b3a [2020-12-22 05:59:51,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/587b6ea6a/055fad425ac74cd1bf63941ae07fda70 [2020-12-22 05:59:51,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:59:51,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:59:51,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:51,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:59:51,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:59:51,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:51" (1/1) ... [2020-12-22 05:59:51,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb6ce4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:51, skipping insertion in model container [2020-12-22 05:59:51,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:51" (1/1) ... [2020-12-22 05:59:51,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:59:51,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:59:52,106 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_spec1_product23.cil.c[58014,58027] [2020-12-22 05:59:52,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:52,172 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:59:52,295 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_spec1_product23.cil.c[58014,58027] [2020-12-22 05:59:52,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:52,384 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:59:52,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52 WrapperNode [2020-12-22 05:59:52,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:52,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:52,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:59:52,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:59:52,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (1/1) ... [2020-12-22 05:59:52,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (1/1) ... [2020-12-22 05:59:52,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:52,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:59:52,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:59:52,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:59:52,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (1/1) ... [2020-12-22 05:59:52,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (1/1) ... [2020-12-22 05:59:52,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (1/1) ... [2020-12-22 05:59:52,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (1/1) ... [2020-12-22 05:59:52,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (1/1) ... [2020-12-22 05:59:53,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (1/1) ... [2020-12-22 05:59:53,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (1/1) ... [2020-12-22 05:59:53,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:59:53,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:59:53,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:59:53,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:59:53,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (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 05:59:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:59:53,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:59:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:59:53,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:00:01,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:00:01,303 INFO L299 CfgBuilder]: Removed 833 assume(true) statements. [2020-12-22 06:00:01,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:00:01 BoogieIcfgContainer [2020-12-22 06:00:01,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:00:01,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:00:01,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:00:01,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:00:01,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:59:51" (1/3) ... [2020-12-22 06:00:01,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424d9c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:00:01, skipping insertion in model container [2020-12-22 06:00:01,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:52" (2/3) ... [2020-12-22 06:00:01,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424d9c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:00:01, skipping insertion in model container [2020-12-22 06:00:01,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:00:01" (3/3) ... [2020-12-22 06:00:01,320 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2020-12-22 06:00:01,326 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:00:01,334 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:00:01,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:00:01,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:00:01,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:00:01,399 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:00:01,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:00:01,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:00:01,399 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:00:01,400 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:00:01,400 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:00:01,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states. [2020-12-22 06:00:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:00:01,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:01,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:01,544 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:01,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:01,564 INFO L82 PathProgramCache]: Analyzing trace with hash 352127062, now seen corresponding path program 1 times [2020-12-22 06:00:01,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:01,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928345593] [2020-12-22 06:00:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:02,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928345593] [2020-12-22 06:00:02,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:02,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:02,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52935134] [2020-12-22 06:00:02,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:02,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:02,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:02,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:02,031 INFO L87 Difference]: Start difference. First operand 3567 states. Second operand 3 states. [2020-12-22 06:00:02,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:02,460 INFO L93 Difference]: Finished difference Result 10621 states and 20021 transitions. [2020-12-22 06:00:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:02,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 06:00:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:02,560 INFO L225 Difference]: With dead ends: 10621 [2020-12-22 06:00:02,560 INFO L226 Difference]: Without dead ends: 7059 [2020-12-22 06:00:02,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7059 states. [2020-12-22 06:00:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7059 to 3563. [2020-12-22 06:00:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3563 states. [2020-12-22 06:00:02,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 6704 transitions. [2020-12-22 06:00:02,837 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 6704 transitions. Word has length 53 [2020-12-22 06:00:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:02,837 INFO L481 AbstractCegarLoop]: Abstraction has 3563 states and 6704 transitions. [2020-12-22 06:00:02,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:02,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 6704 transitions. [2020-12-22 06:00:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:00:02,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:02,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:02,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:00:02,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:02,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:02,850 INFO L82 PathProgramCache]: Analyzing trace with hash -311998835, now seen corresponding path program 1 times [2020-12-22 06:00:02,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:02,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863538274] [2020-12-22 06:00:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:03,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863538274] [2020-12-22 06:00:03,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:03,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:03,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868366003] [2020-12-22 06:00:03,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:03,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:03,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:03,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:03,055 INFO L87 Difference]: Start difference. First operand 3563 states and 6704 transitions. Second operand 4 states. [2020-12-22 06:00:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:03,647 INFO L93 Difference]: Finished difference Result 14006 states and 26371 transitions. [2020-12-22 06:00:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:03,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:00:03,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:03,716 INFO L225 Difference]: With dead ends: 14006 [2020-12-22 06:00:03,716 INFO L226 Difference]: Without dead ends: 10465 [2020-12-22 06:00:03,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:03,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10465 states. [2020-12-22 06:00:04,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10465 to 3539. [2020-12-22 06:00:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-12-22 06:00:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 6651 transitions. [2020-12-22 06:00:04,093 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 6651 transitions. Word has length 60 [2020-12-22 06:00:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:04,093 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 6651 transitions. [2020-12-22 06:00:04,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 6651 transitions. [2020-12-22 06:00:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:00:04,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:04,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:04,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:00:04,099 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:04,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1465282347, now seen corresponding path program 1 times [2020-12-22 06:00:04,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:04,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243461297] [2020-12-22 06:00:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:04,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243461297] [2020-12-22 06:00:04,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:04,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:04,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749021371] [2020-12-22 06:00:04,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:04,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:04,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:04,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:04,267 INFO L87 Difference]: Start difference. First operand 3539 states and 6651 transitions. Second operand 4 states. [2020-12-22 06:00:04,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:04,855 INFO L93 Difference]: Finished difference Result 10525 states and 19804 transitions. [2020-12-22 06:00:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:04,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 06:00:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:04,896 INFO L225 Difference]: With dead ends: 10525 [2020-12-22 06:00:04,896 INFO L226 Difference]: Without dead ends: 7008 [2020-12-22 06:00:04,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:04,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2020-12-22 06:00:05,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 3539. [2020-12-22 06:00:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-12-22 06:00:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 6645 transitions. [2020-12-22 06:00:05,087 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 6645 transitions. Word has length 61 [2020-12-22 06:00:05,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:05,095 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 6645 transitions. [2020-12-22 06:00:05,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 6645 transitions. [2020-12-22 06:00:05,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:00:05,100 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:05,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:05,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:00:05,101 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:05,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:05,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1312379910, now seen corresponding path program 1 times [2020-12-22 06:00:05,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:05,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287707915] [2020-12-22 06:00:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:05,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287707915] [2020-12-22 06:00:05,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:05,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:05,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072637447] [2020-12-22 06:00:05,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:05,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:05,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:05,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:05,253 INFO L87 Difference]: Start difference. First operand 3539 states and 6645 transitions. Second operand 4 states. [2020-12-22 06:00:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:05,810 INFO L93 Difference]: Finished difference Result 10525 states and 19792 transitions. [2020-12-22 06:00:05,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:05,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 06:00:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:05,834 INFO L225 Difference]: With dead ends: 10525 [2020-12-22 06:00:05,834 INFO L226 Difference]: Without dead ends: 7008 [2020-12-22 06:00:05,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:05,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2020-12-22 06:00:06,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 3539. [2020-12-22 06:00:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-12-22 06:00:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 6639 transitions. [2020-12-22 06:00:06,090 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 6639 transitions. Word has length 63 [2020-12-22 06:00:06,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:06,090 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 6639 transitions. [2020-12-22 06:00:06,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 6639 transitions. [2020-12-22 06:00:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:00:06,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:06,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:06,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:00:06,095 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash -720441579, now seen corresponding path program 1 times [2020-12-22 06:00:06,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:06,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250891841] [2020-12-22 06:00:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:06,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250891841] [2020-12-22 06:00:06,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:06,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:06,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608339272] [2020-12-22 06:00:06,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:06,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:06,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:06,179 INFO L87 Difference]: Start difference. First operand 3539 states and 6639 transitions. Second operand 4 states. [2020-12-22 06:00:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:07,063 INFO L93 Difference]: Finished difference Result 17445 states and 32810 transitions. [2020-12-22 06:00:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:07,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 06:00:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:07,102 INFO L225 Difference]: With dead ends: 17445 [2020-12-22 06:00:07,103 INFO L226 Difference]: Without dead ends: 13928 [2020-12-22 06:00:07,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13928 states. [2020-12-22 06:00:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13928 to 3539. [2020-12-22 06:00:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-12-22 06:00:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 6638 transitions. [2020-12-22 06:00:07,330 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 6638 transitions. Word has length 65 [2020-12-22 06:00:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:07,331 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 6638 transitions. [2020-12-22 06:00:07,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 6638 transitions. [2020-12-22 06:00:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:00:07,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:07,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:07,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:00:07,336 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:07,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:07,336 INFO L82 PathProgramCache]: Analyzing trace with hash 159674426, now seen corresponding path program 1 times [2020-12-22 06:00:07,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:07,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160608841] [2020-12-22 06:00:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:07,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160608841] [2020-12-22 06:00:07,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:07,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:07,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653877814] [2020-12-22 06:00:07,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:07,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:07,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:07,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:07,404 INFO L87 Difference]: Start difference. First operand 3539 states and 6638 transitions. Second operand 4 states. [2020-12-22 06:00:07,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:07,983 INFO L93 Difference]: Finished difference Result 10525 states and 19779 transitions. [2020-12-22 06:00:07,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:07,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 06:00:07,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:08,002 INFO L225 Difference]: With dead ends: 10525 [2020-12-22 06:00:08,002 INFO L226 Difference]: Without dead ends: 7008 [2020-12-22 06:00:08,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2020-12-22 06:00:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 3539. [2020-12-22 06:00:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-12-22 06:00:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 6632 transitions. [2020-12-22 06:00:08,163 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 6632 transitions. Word has length 66 [2020-12-22 06:00:08,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:08,164 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 6632 transitions. [2020-12-22 06:00:08,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:08,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 6632 transitions. [2020-12-22 06:00:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:00:08,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:08,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:08,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:00:08,169 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:08,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1356737798, now seen corresponding path program 1 times [2020-12-22 06:00:08,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:08,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455210037] [2020-12-22 06:00:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:08,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455210037] [2020-12-22 06:00:08,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:08,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:08,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471140066] [2020-12-22 06:00:08,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:08,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:08,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:08,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:08,280 INFO L87 Difference]: Start difference. First operand 3539 states and 6632 transitions. Second operand 4 states. [2020-12-22 06:00:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:08,726 INFO L93 Difference]: Finished difference Result 10525 states and 19767 transitions. [2020-12-22 06:00:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:08,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 06:00:08,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:08,748 INFO L225 Difference]: With dead ends: 10525 [2020-12-22 06:00:08,748 INFO L226 Difference]: Without dead ends: 7008 [2020-12-22 06:00:08,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2020-12-22 06:00:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 3539. [2020-12-22 06:00:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-12-22 06:00:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 6626 transitions. [2020-12-22 06:00:08,996 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 6626 transitions. Word has length 67 [2020-12-22 06:00:08,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:08,996 INFO L481 AbstractCegarLoop]: Abstraction has 3539 states and 6626 transitions. [2020-12-22 06:00:08,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 6626 transitions. [2020-12-22 06:00:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:00:09,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:09,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:09,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:00:09,001 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:09,002 INFO L82 PathProgramCache]: Analyzing trace with hash 143886207, now seen corresponding path program 1 times [2020-12-22 06:00:09,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:09,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596893941] [2020-12-22 06:00:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:09,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596893941] [2020-12-22 06:00:09,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:09,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:09,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024659458] [2020-12-22 06:00:09,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:09,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:09,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:09,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:09,075 INFO L87 Difference]: Start difference. First operand 3539 states and 6626 transitions. Second operand 4 states. [2020-12-22 06:00:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:09,747 INFO L93 Difference]: Finished difference Result 13964 states and 26237 transitions. [2020-12-22 06:00:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:09,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 06:00:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:09,786 INFO L225 Difference]: With dead ends: 13964 [2020-12-22 06:00:09,787 INFO L226 Difference]: Without dead ends: 10453 [2020-12-22 06:00:09,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10453 states. [2020-12-22 06:00:10,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10453 to 3541. [2020-12-22 06:00:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3541 states. [2020-12-22 06:00:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 6627 transitions. [2020-12-22 06:00:10,105 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 6627 transitions. Word has length 68 [2020-12-22 06:00:10,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:10,105 INFO L481 AbstractCegarLoop]: Abstraction has 3541 states and 6627 transitions. [2020-12-22 06:00:10,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:10,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 6627 transitions. [2020-12-22 06:00:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:00:10,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:10,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:10,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:00:10,117 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:10,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:10,117 INFO L82 PathProgramCache]: Analyzing trace with hash -736370769, now seen corresponding path program 1 times [2020-12-22 06:00:10,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:10,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718922353] [2020-12-22 06:00:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:10,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718922353] [2020-12-22 06:00:10,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:10,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:10,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661414937] [2020-12-22 06:00:10,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:10,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:10,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:10,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:10,212 INFO L87 Difference]: Start difference. First operand 3541 states and 6627 transitions. Second operand 4 states. [2020-12-22 06:00:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:10,799 INFO L93 Difference]: Finished difference Result 13956 states and 26217 transitions. [2020-12-22 06:00:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:10,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 06:00:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:10,833 INFO L225 Difference]: With dead ends: 13956 [2020-12-22 06:00:10,833 INFO L226 Difference]: Without dead ends: 10448 [2020-12-22 06:00:10,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10448 states. [2020-12-22 06:00:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10448 to 3546. [2020-12-22 06:00:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-12-22 06:00:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 6635 transitions. [2020-12-22 06:00:11,093 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 6635 transitions. Word has length 69 [2020-12-22 06:00:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:11,093 INFO L481 AbstractCegarLoop]: Abstraction has 3546 states and 6635 transitions. [2020-12-22 06:00:11,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 6635 transitions. [2020-12-22 06:00:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:00:11,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:11,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:11,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:00:11,098 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:11,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:11,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1415560500, now seen corresponding path program 1 times [2020-12-22 06:00:11,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:11,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398881702] [2020-12-22 06:00:11,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:11,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398881702] [2020-12-22 06:00:11,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:11,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:11,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831286156] [2020-12-22 06:00:11,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:11,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:11,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:11,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:11,166 INFO L87 Difference]: Start difference. First operand 3546 states and 6635 transitions. Second operand 3 states. [2020-12-22 06:00:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:11,381 INFO L93 Difference]: Finished difference Result 7049 states and 13212 transitions. [2020-12-22 06:00:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:11,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:00:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:11,395 INFO L225 Difference]: With dead ends: 7049 [2020-12-22 06:00:11,395 INFO L226 Difference]: Without dead ends: 3540 [2020-12-22 06:00:11,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2020-12-22 06:00:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3540. [2020-12-22 06:00:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2020-12-22 06:00:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 6623 transitions. [2020-12-22 06:00:11,603 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 6623 transitions. Word has length 70 [2020-12-22 06:00:11,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:11,604 INFO L481 AbstractCegarLoop]: Abstraction has 3540 states and 6623 transitions. [2020-12-22 06:00:11,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 6623 transitions. [2020-12-22 06:00:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:00:11,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:11,608 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 06:00:11,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:00:11,609 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash -898909393, now seen corresponding path program 1 times [2020-12-22 06:00:11,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:11,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830430009] [2020-12-22 06:00:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:11,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830430009] [2020-12-22 06:00:11,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:11,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:11,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764606071] [2020-12-22 06:00:11,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:11,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:11,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:11,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:11,701 INFO L87 Difference]: Start difference. First operand 3540 states and 6623 transitions. Second operand 5 states. [2020-12-22 06:00:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:11,977 INFO L93 Difference]: Finished difference Result 6993 states and 13125 transitions. [2020-12-22 06:00:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:11,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 06:00:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:11,988 INFO L225 Difference]: With dead ends: 6993 [2020-12-22 06:00:11,988 INFO L226 Difference]: Without dead ends: 3527 [2020-12-22 06:00:11,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2020-12-22 06:00:12,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3527. [2020-12-22 06:00:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3527 states. [2020-12-22 06:00:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 6601 transitions. [2020-12-22 06:00:12,183 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 6601 transitions. Word has length 72 [2020-12-22 06:00:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:12,183 INFO L481 AbstractCegarLoop]: Abstraction has 3527 states and 6601 transitions. [2020-12-22 06:00:12,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 6601 transitions. [2020-12-22 06:00:12,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:00:12,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:12,187 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] [2020-12-22 06:00:12,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:00:12,188 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:12,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:12,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1656374245, now seen corresponding path program 1 times [2020-12-22 06:00:12,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:12,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930215306] [2020-12-22 06:00:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:12,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930215306] [2020-12-22 06:00:12,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:12,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:12,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822172236] [2020-12-22 06:00:12,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:12,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:12,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:12,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:12,278 INFO L87 Difference]: Start difference. First operand 3527 states and 6601 transitions. Second operand 5 states. [2020-12-22 06:00:12,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:12,537 INFO L93 Difference]: Finished difference Result 6987 states and 13114 transitions. [2020-12-22 06:00:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:12,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 06:00:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:12,546 INFO L225 Difference]: With dead ends: 6987 [2020-12-22 06:00:12,546 INFO L226 Difference]: Without dead ends: 3521 [2020-12-22 06:00:12,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2020-12-22 06:00:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3521. [2020-12-22 06:00:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3521 states. [2020-12-22 06:00:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 6592 transitions. [2020-12-22 06:00:12,703 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 6592 transitions. Word has length 75 [2020-12-22 06:00:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:12,704 INFO L481 AbstractCegarLoop]: Abstraction has 3521 states and 6592 transitions. [2020-12-22 06:00:12,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 6592 transitions. [2020-12-22 06:00:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:00:12,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:12,708 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] [2020-12-22 06:00:12,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:00:12,708 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:12,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1913366373, now seen corresponding path program 1 times [2020-12-22 06:00:12,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:12,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365293915] [2020-12-22 06:00:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:12,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365293915] [2020-12-22 06:00:12,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:12,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:12,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848368647] [2020-12-22 06:00:12,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:12,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:12,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:12,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:12,816 INFO L87 Difference]: Start difference. First operand 3521 states and 6592 transitions. Second operand 4 states. [2020-12-22 06:00:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:13,021 INFO L93 Difference]: Finished difference Result 6981 states and 13105 transitions. [2020-12-22 06:00:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:13,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 06:00:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:13,028 INFO L225 Difference]: With dead ends: 6981 [2020-12-22 06:00:13,028 INFO L226 Difference]: Without dead ends: 3507 [2020-12-22 06:00:13,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2020-12-22 06:00:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3507. [2020-12-22 06:00:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3507 states. [2020-12-22 06:00:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 6571 transitions. [2020-12-22 06:00:13,215 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 6571 transitions. Word has length 75 [2020-12-22 06:00:13,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:13,215 INFO L481 AbstractCegarLoop]: Abstraction has 3507 states and 6571 transitions. [2020-12-22 06:00:13,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 6571 transitions. [2020-12-22 06:00:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:00:13,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:13,220 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] [2020-12-22 06:00:13,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:00:13,221 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:13,222 INFO L82 PathProgramCache]: Analyzing trace with hash -54124472, now seen corresponding path program 1 times [2020-12-22 06:00:13,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:13,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935785667] [2020-12-22 06:00:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:13,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935785667] [2020-12-22 06:00:13,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:13,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:13,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18045678] [2020-12-22 06:00:13,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:13,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:13,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:13,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:13,329 INFO L87 Difference]: Start difference. First operand 3507 states and 6571 transitions. Second operand 6 states. [2020-12-22 06:00:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:13,672 INFO L93 Difference]: Finished difference Result 6981 states and 13100 transitions. [2020-12-22 06:00:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:13,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 06:00:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:13,680 INFO L225 Difference]: With dead ends: 6981 [2020-12-22 06:00:13,680 INFO L226 Difference]: Without dead ends: 3527 [2020-12-22 06:00:13,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2020-12-22 06:00:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3507. [2020-12-22 06:00:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3507 states. [2020-12-22 06:00:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 6570 transitions. [2020-12-22 06:00:13,865 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 6570 transitions. Word has length 76 [2020-12-22 06:00:13,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:13,866 INFO L481 AbstractCegarLoop]: Abstraction has 3507 states and 6570 transitions. [2020-12-22 06:00:13,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 6570 transitions. [2020-12-22 06:00:13,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 06:00:13,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:13,869 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] [2020-12-22 06:00:13,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:00:13,869 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:13,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:13,870 INFO L82 PathProgramCache]: Analyzing trace with hash 886791828, now seen corresponding path program 1 times [2020-12-22 06:00:13,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:13,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013833283] [2020-12-22 06:00:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:13,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013833283] [2020-12-22 06:00:13,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:13,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:13,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468421736] [2020-12-22 06:00:13,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:13,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:13,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:13,960 INFO L87 Difference]: Start difference. First operand 3507 states and 6570 transitions. Second operand 6 states. [2020-12-22 06:00:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:14,247 INFO L93 Difference]: Finished difference Result 6971 states and 13081 transitions. [2020-12-22 06:00:14,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:14,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 06:00:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:14,255 INFO L225 Difference]: With dead ends: 6971 [2020-12-22 06:00:14,255 INFO L226 Difference]: Without dead ends: 3522 [2020-12-22 06:00:14,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:14,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2020-12-22 06:00:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 3507. [2020-12-22 06:00:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3507 states. [2020-12-22 06:00:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 6569 transitions. [2020-12-22 06:00:14,445 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 6569 transitions. Word has length 77 [2020-12-22 06:00:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:14,445 INFO L481 AbstractCegarLoop]: Abstraction has 3507 states and 6569 transitions. [2020-12-22 06:00:14,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 6569 transitions. [2020-12-22 06:00:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:00:14,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:14,449 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] [2020-12-22 06:00:14,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:00:14,450 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:14,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1398143693, now seen corresponding path program 1 times [2020-12-22 06:00:14,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:14,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083337659] [2020-12-22 06:00:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:14,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083337659] [2020-12-22 06:00:14,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:14,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:14,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92774222] [2020-12-22 06:00:14,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:14,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:14,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:14,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:14,581 INFO L87 Difference]: Start difference. First operand 3507 states and 6569 transitions. Second operand 6 states. [2020-12-22 06:00:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:21,170 INFO L93 Difference]: Finished difference Result 23963 states and 44851 transitions. [2020-12-22 06:00:21,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:00:21,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 06:00:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:21,197 INFO L225 Difference]: With dead ends: 23963 [2020-12-22 06:00:21,197 INFO L226 Difference]: Without dead ends: 20547 [2020-12-22 06:00:21,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20547 states. [2020-12-22 06:00:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20547 to 3513. [2020-12-22 06:00:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-12-22 06:00:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 6575 transitions. [2020-12-22 06:00:21,601 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 6575 transitions. Word has length 78 [2020-12-22 06:00:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:21,602 INFO L481 AbstractCegarLoop]: Abstraction has 3513 states and 6575 transitions. [2020-12-22 06:00:21,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 6575 transitions. [2020-12-22 06:00:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:00:21,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:21,607 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] [2020-12-22 06:00:21,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:00:21,608 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:21,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1908235167, now seen corresponding path program 1 times [2020-12-22 06:00:21,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:21,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840841373] [2020-12-22 06:00:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:21,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840841373] [2020-12-22 06:00:21,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:21,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:21,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627653072] [2020-12-22 06:00:21,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:21,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:21,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:21,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:21,770 INFO L87 Difference]: Start difference. First operand 3513 states and 6575 transitions. Second operand 4 states. [2020-12-22 06:00:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:24,810 INFO L93 Difference]: Finished difference Result 9222 states and 17371 transitions. [2020-12-22 06:00:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:24,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 06:00:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:24,819 INFO L225 Difference]: With dead ends: 9222 [2020-12-22 06:00:24,820 INFO L226 Difference]: Without dead ends: 5802 [2020-12-22 06:00:24,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5802 states. [2020-12-22 06:00:25,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5802 to 3513. [2020-12-22 06:00:25,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-12-22 06:00:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 6569 transitions. [2020-12-22 06:00:25,083 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 6569 transitions. Word has length 79 [2020-12-22 06:00:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:25,084 INFO L481 AbstractCegarLoop]: Abstraction has 3513 states and 6569 transitions. [2020-12-22 06:00:25,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 6569 transitions. [2020-12-22 06:00:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:00:25,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:25,087 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] [2020-12-22 06:00:25,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:00:25,087 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:25,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1376691913, now seen corresponding path program 1 times [2020-12-22 06:00:25,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:25,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635000831] [2020-12-22 06:00:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:25,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635000831] [2020-12-22 06:00:25,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:25,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:25,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961215423] [2020-12-22 06:00:25,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:25,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:25,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:25,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:25,272 INFO L87 Difference]: Start difference. First operand 3513 states and 6569 transitions. Second operand 4 states. [2020-12-22 06:00:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:28,432 INFO L93 Difference]: Finished difference Result 9248 states and 17406 transitions. [2020-12-22 06:00:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:28,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 06:00:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:28,440 INFO L225 Difference]: With dead ends: 9248 [2020-12-22 06:00:28,440 INFO L226 Difference]: Without dead ends: 5802 [2020-12-22 06:00:28,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5802 states. [2020-12-22 06:00:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5802 to 3513. [2020-12-22 06:00:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-12-22 06:00:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 6563 transitions. [2020-12-22 06:00:28,721 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 6563 transitions. Word has length 80 [2020-12-22 06:00:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:28,721 INFO L481 AbstractCegarLoop]: Abstraction has 3513 states and 6563 transitions. [2020-12-22 06:00:28,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 6563 transitions. [2020-12-22 06:00:28,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:00:28,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:28,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:28,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:00:28,725 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:28,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1178446551, now seen corresponding path program 1 times [2020-12-22 06:00:28,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:28,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186447684] [2020-12-22 06:00:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:28,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186447684] [2020-12-22 06:00:28,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:28,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:28,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389113673] [2020-12-22 06:00:28,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:28,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:28,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:28,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:28,839 INFO L87 Difference]: Start difference. First operand 3513 states and 6563 transitions. Second operand 4 states. [2020-12-22 06:00:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:31,805 INFO L93 Difference]: Finished difference Result 9248 states and 17395 transitions. [2020-12-22 06:00:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:31,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 06:00:31,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:31,813 INFO L225 Difference]: With dead ends: 9248 [2020-12-22 06:00:31,813 INFO L226 Difference]: Without dead ends: 5802 [2020-12-22 06:00:31,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:31,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5802 states. [2020-12-22 06:00:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5802 to 3513. [2020-12-22 06:00:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-12-22 06:00:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 6557 transitions. [2020-12-22 06:00:31,996 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 6557 transitions. Word has length 82 [2020-12-22 06:00:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:31,996 INFO L481 AbstractCegarLoop]: Abstraction has 3513 states and 6557 transitions. [2020-12-22 06:00:31,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 6557 transitions. [2020-12-22 06:00:31,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:00:31,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:31,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:31,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:00:31,999 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:32,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:32,000 INFO L82 PathProgramCache]: Analyzing trace with hash 497540969, now seen corresponding path program 1 times [2020-12-22 06:00:32,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:32,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956422102] [2020-12-22 06:00:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:32,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956422102] [2020-12-22 06:00:32,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:32,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:32,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536606397] [2020-12-22 06:00:32,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:32,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:32,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:32,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:32,079 INFO L87 Difference]: Start difference. First operand 3513 states and 6557 transitions. Second operand 6 states. [2020-12-22 06:00:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:42,563 INFO L93 Difference]: Finished difference Result 44486 states and 83155 transitions. [2020-12-22 06:00:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:00:42,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 06:00:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:42,621 INFO L225 Difference]: With dead ends: 44486 [2020-12-22 06:00:42,621 INFO L226 Difference]: Without dead ends: 41067 [2020-12-22 06:00:42,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:00:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41067 states. [2020-12-22 06:00:43,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41067 to 6978. [2020-12-22 06:00:43,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6978 states. [2020-12-22 06:00:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 13058 transitions. [2020-12-22 06:00:43,381 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 13058 transitions. Word has length 84 [2020-12-22 06:00:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:43,381 INFO L481 AbstractCegarLoop]: Abstraction has 6978 states and 13058 transitions. [2020-12-22 06:00:43,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 13058 transitions. [2020-12-22 06:00:43,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:00:43,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:43,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:43,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:00:43,387 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:43,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1758798276, now seen corresponding path program 1 times [2020-12-22 06:00:43,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:43,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917551909] [2020-12-22 06:00:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:43,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917551909] [2020-12-22 06:00:43,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:43,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:43,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862166734] [2020-12-22 06:00:43,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:43,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:43,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:43,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:43,466 INFO L87 Difference]: Start difference. First operand 6978 states and 13058 transitions. Second operand 6 states. [2020-12-22 06:00:58,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:58,089 INFO L93 Difference]: Finished difference Result 82614 states and 154739 transitions. [2020-12-22 06:00:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:00:58,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 06:00:58,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:58,191 INFO L225 Difference]: With dead ends: 82614 [2020-12-22 06:00:58,191 INFO L226 Difference]: Without dead ends: 75791 [2020-12-22 06:00:58,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:00:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75791 states. [2020-12-22 06:00:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75791 to 13825. [2020-12-22 06:00:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13825 states. [2020-12-22 06:00:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13825 states to 13825 states and 25929 transitions. [2020-12-22 06:00:59,635 INFO L78 Accepts]: Start accepts. Automaton has 13825 states and 25929 transitions. Word has length 85 [2020-12-22 06:00:59,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:59,635 INFO L481 AbstractCegarLoop]: Abstraction has 13825 states and 25929 transitions. [2020-12-22 06:00:59,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:59,635 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states and 25929 transitions. [2020-12-22 06:00:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:00:59,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:59,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:59,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:00:59,656 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 06:00:59,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:59,657 INFO L82 PathProgramCache]: Analyzing trace with hash 497224773, now seen corresponding path program 1 times [2020-12-22 06:00:59,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:59,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809518540] [2020-12-22 06:00:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:59,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809518540] [2020-12-22 06:00:59,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:59,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:59,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284904384] [2020-12-22 06:00:59,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:59,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:59,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:59,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:59,728 INFO L87 Difference]: Start difference. First operand 13825 states and 25929 transitions. Second operand 5 states. [2020-12-22 06:01:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:00,431 INFO L93 Difference]: Finished difference Result 24117 states and 45266 transitions. [2020-12-22 06:01:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:01:00,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 06:01:00,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:00,555 INFO L225 Difference]: With dead ends: 24117 [2020-12-22 06:01:00,555 INFO L226 Difference]: Without dead ends: 10394 [2020-12-22 06:01:00,576 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 06:01:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10394 states. [2020-12-22 06:01:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10394 to 10379. [2020-12-22 06:01:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10379 states. [2020-12-22 06:01:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 19446 transitions. [2020-12-22 06:01:01,134 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 19446 transitions. Word has length 85 [2020-12-22 06:01:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:01,134 INFO L481 AbstractCegarLoop]: Abstraction has 10379 states and 19446 transitions. [2020-12-22 06:01:01,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 19446 transitions. [2020-12-22 06:01:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:01:01,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:01,139 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] [2020-12-22 06:01:01,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:01:01,139 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 06:01:01,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:01,139 INFO L82 PathProgramCache]: Analyzing trace with hash -934231612, now seen corresponding path program 1 times [2020-12-22 06:01:01,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:01,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255252711] [2020-12-22 06:01:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:01,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255252711] [2020-12-22 06:01:01,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:01,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:01,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897716426] [2020-12-22 06:01:01,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:01,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:01,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:01,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:01,202 INFO L87 Difference]: Start difference. First operand 10379 states and 19446 transitions. Second operand 5 states. [2020-12-22 06:01:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:01,620 INFO L93 Difference]: Finished difference Result 13799 states and 25858 transitions. [2020-12-22 06:01:01,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:01:01,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-12-22 06:01:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:01,626 INFO L225 Difference]: With dead ends: 13799 [2020-12-22 06:01:01,626 INFO L226 Difference]: Without dead ends: 3450 [2020-12-22 06:01:01,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:01:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2020-12-22 06:01:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3450. [2020-12-22 06:01:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3450 states. [2020-12-22 06:01:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 6447 transitions. [2020-12-22 06:01:01,868 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 6447 transitions. Word has length 86 [2020-12-22 06:01:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:01,869 INFO L481 AbstractCegarLoop]: Abstraction has 3450 states and 6447 transitions. [2020-12-22 06:01:01,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 6447 transitions. [2020-12-22 06:01:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:01:01,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:01,871 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] [2020-12-22 06:01:01,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:01:01,872 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:01,872 INFO L82 PathProgramCache]: Analyzing trace with hash -539114110, now seen corresponding path program 1 times [2020-12-22 06:01:01,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:01,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155538462] [2020-12-22 06:01:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:01,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155538462] [2020-12-22 06:01:01,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:01,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:01,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587134838] [2020-12-22 06:01:01,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:01,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:01,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:01,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:01,995 INFO L87 Difference]: Start difference. First operand 3450 states and 6447 transitions. Second operand 4 states. [2020-12-22 06:01:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:04,827 INFO L93 Difference]: Finished difference Result 9128 states and 17177 transitions. [2020-12-22 06:01:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:04,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-22 06:01:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:04,834 INFO L225 Difference]: With dead ends: 9128 [2020-12-22 06:01:04,834 INFO L226 Difference]: Without dead ends: 5737 [2020-12-22 06:01:04,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2020-12-22 06:01:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 3450. [2020-12-22 06:01:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3450 states. [2020-12-22 06:01:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 6441 transitions. [2020-12-22 06:01:05,030 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 6441 transitions. Word has length 87 [2020-12-22 06:01:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:05,030 INFO L481 AbstractCegarLoop]: Abstraction has 3450 states and 6441 transitions. [2020-12-22 06:01:05,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:05,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 6441 transitions. [2020-12-22 06:01:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:01:05,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:05,032 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] [2020-12-22 06:01:05,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:01:05,032 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:05,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:05,033 INFO L82 PathProgramCache]: Analyzing trace with hash 85915244, now seen corresponding path program 1 times [2020-12-22 06:01:05,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:05,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527516355] [2020-12-22 06:01:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:05,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527516355] [2020-12-22 06:01:05,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:05,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:05,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847905626] [2020-12-22 06:01:05,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:05,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:05,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:05,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:05,116 INFO L87 Difference]: Start difference. First operand 3450 states and 6441 transitions. Second operand 6 states. [2020-12-22 06:01:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:07,805 INFO L93 Difference]: Finished difference Result 10023 states and 18701 transitions. [2020-12-22 06:01:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:01:07,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-12-22 06:01:07,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:07,815 INFO L225 Difference]: With dead ends: 10023 [2020-12-22 06:01:07,815 INFO L226 Difference]: Without dead ends: 7853 [2020-12-22 06:01:07,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:01:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7853 states. [2020-12-22 06:01:08,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7853 to 3446. [2020-12-22 06:01:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3446 states. [2020-12-22 06:01:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 6433 transitions. [2020-12-22 06:01:08,024 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 6433 transitions. Word has length 89 [2020-12-22 06:01:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:08,024 INFO L481 AbstractCegarLoop]: Abstraction has 3446 states and 6433 transitions. [2020-12-22 06:01:08,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 6433 transitions. [2020-12-22 06:01:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 06:01:08,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:08,027 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 06:01:08,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:01:08,027 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash 78522526, now seen corresponding path program 1 times [2020-12-22 06:01:08,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:08,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892898210] [2020-12-22 06:01:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:08,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892898210] [2020-12-22 06:01:08,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:08,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:08,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617659063] [2020-12-22 06:01:08,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:08,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:08,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:08,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:08,107 INFO L87 Difference]: Start difference. First operand 3446 states and 6433 transitions. Second operand 3 states. [2020-12-22 06:01:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:08,719 INFO L93 Difference]: Finished difference Result 8269 states and 15485 transitions. [2020-12-22 06:01:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:08,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 06:01:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:08,727 INFO L225 Difference]: With dead ends: 8269 [2020-12-22 06:01:08,727 INFO L226 Difference]: Without dead ends: 5724 [2020-12-22 06:01:08,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:08,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5724 states. [2020-12-22 06:01:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 5709. [2020-12-22 06:01:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5709 states. [2020-12-22 06:01:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5709 states to 5709 states and 10671 transitions. [2020-12-22 06:01:09,108 INFO L78 Accepts]: Start accepts. Automaton has 5709 states and 10671 transitions. Word has length 95 [2020-12-22 06:01:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:09,108 INFO L481 AbstractCegarLoop]: Abstraction has 5709 states and 10671 transitions. [2020-12-22 06:01:09,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5709 states and 10671 transitions. [2020-12-22 06:01:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 06:01:09,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:09,111 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] [2020-12-22 06:01:09,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:01:09,111 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:09,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1596051306, now seen corresponding path program 1 times [2020-12-22 06:01:09,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:09,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383778742] [2020-12-22 06:01:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:09,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383778742] [2020-12-22 06:01:09,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:09,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:09,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588127352] [2020-12-22 06:01:09,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:09,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:09,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:09,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:09,183 INFO L87 Difference]: Start difference. First operand 5709 states and 10671 transitions. Second operand 3 states. [2020-12-22 06:01:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:09,852 INFO L93 Difference]: Finished difference Result 14370 states and 26904 transitions. [2020-12-22 06:01:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:09,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 06:01:09,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:09,866 INFO L225 Difference]: With dead ends: 14370 [2020-12-22 06:01:09,866 INFO L226 Difference]: Without dead ends: 10152 [2020-12-22 06:01:09,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2020-12-22 06:01:10,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 10137. [2020-12-22 06:01:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10137 states. [2020-12-22 06:01:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10137 states to 10137 states and 18961 transitions. [2020-12-22 06:01:10,495 INFO L78 Accepts]: Start accepts. Automaton has 10137 states and 18961 transitions. Word has length 96 [2020-12-22 06:01:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:10,495 INFO L481 AbstractCegarLoop]: Abstraction has 10137 states and 18961 transitions. [2020-12-22 06:01:10,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand 10137 states and 18961 transitions. [2020-12-22 06:01:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 06:01:10,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:10,498 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 06:01:10,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:01:10,498 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:10,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1991700985, now seen corresponding path program 1 times [2020-12-22 06:01:10,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:10,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543890454] [2020-12-22 06:01:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:10,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543890454] [2020-12-22 06:01:10,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:10,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:10,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619149173] [2020-12-22 06:01:10,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:10,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:10,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:10,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:10,634 INFO L87 Difference]: Start difference. First operand 10137 states and 18961 transitions. Second operand 3 states. [2020-12-22 06:01:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:11,729 INFO L93 Difference]: Finished difference Result 26376 states and 49357 transitions. [2020-12-22 06:01:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:11,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 06:01:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:11,754 INFO L225 Difference]: With dead ends: 26376 [2020-12-22 06:01:11,754 INFO L226 Difference]: Without dead ends: 18802 [2020-12-22 06:01:11,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18802 states. [2020-12-22 06:01:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18802 to 18787. [2020-12-22 06:01:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18787 states. [2020-12-22 06:01:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18787 states to 18787 states and 35136 transitions. [2020-12-22 06:01:12,880 INFO L78 Accepts]: Start accepts. Automaton has 18787 states and 35136 transitions. Word has length 97 [2020-12-22 06:01:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:12,880 INFO L481 AbstractCegarLoop]: Abstraction has 18787 states and 35136 transitions. [2020-12-22 06:01:12,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 18787 states and 35136 transitions. [2020-12-22 06:01:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 06:01:12,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:12,883 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 06:01:12,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:01:12,884 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:12,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1207838545, now seen corresponding path program 1 times [2020-12-22 06:01:12,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:12,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819766241] [2020-12-22 06:01:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:13,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819766241] [2020-12-22 06:01:13,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:13,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:13,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349631534] [2020-12-22 06:01:13,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:13,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:13,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:13,005 INFO L87 Difference]: Start difference. First operand 18787 states and 35136 transitions. Second operand 3 states. [2020-12-22 06:01:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:15,151 INFO L93 Difference]: Finished difference Result 49976 states and 93428 transitions. [2020-12-22 06:01:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:15,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-22 06:01:15,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:15,202 INFO L225 Difference]: With dead ends: 49976 [2020-12-22 06:01:15,202 INFO L226 Difference]: Without dead ends: 35680 [2020-12-22 06:01:15,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35680 states. [2020-12-22 06:01:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35680 to 35665. [2020-12-22 06:01:17,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35665 states. [2020-12-22 06:01:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35665 states to 35665 states and 66643 transitions. [2020-12-22 06:01:17,688 INFO L78 Accepts]: Start accepts. Automaton has 35665 states and 66643 transitions. Word has length 98 [2020-12-22 06:01:17,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:17,688 INFO L481 AbstractCegarLoop]: Abstraction has 35665 states and 66643 transitions. [2020-12-22 06:01:17,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 35665 states and 66643 transitions. [2020-12-22 06:01:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 06:01:17,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:17,692 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] [2020-12-22 06:01:17,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:01:17,692 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:17,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1952094380, now seen corresponding path program 1 times [2020-12-22 06:01:17,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:17,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623194280] [2020-12-22 06:01:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:17,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623194280] [2020-12-22 06:01:17,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:17,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:17,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604671355] [2020-12-22 06:01:17,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:17,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:17,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:17,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:17,780 INFO L87 Difference]: Start difference. First operand 35665 states and 66643 transitions. Second operand 3 states. [2020-12-22 06:01:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:22,238 INFO L93 Difference]: Finished difference Result 96332 states and 179835 transitions. [2020-12-22 06:01:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:22,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 06:01:22,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:22,359 INFO L225 Difference]: With dead ends: 96332 [2020-12-22 06:01:22,359 INFO L226 Difference]: Without dead ends: 68582 [2020-12-22 06:01:22,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68582 states. [2020-12-22 06:01:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68582 to 68567. [2020-12-22 06:01:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68567 states. [2020-12-22 06:01:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68567 states to 68567 states and 127938 transitions. [2020-12-22 06:01:26,836 INFO L78 Accepts]: Start accepts. Automaton has 68567 states and 127938 transitions. Word has length 99 [2020-12-22 06:01:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:26,837 INFO L481 AbstractCegarLoop]: Abstraction has 68567 states and 127938 transitions. [2020-12-22 06:01:26,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 68567 states and 127938 transitions. [2020-12-22 06:01:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 06:01:26,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:26,840 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] [2020-12-22 06:01:26,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:01:26,840 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:26,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2086107886, now seen corresponding path program 1 times [2020-12-22 06:01:26,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:26,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313220361] [2020-12-22 06:01:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:27,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313220361] [2020-12-22 06:01:27,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:27,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:27,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685563660] [2020-12-22 06:01:27,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:27,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:27,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:27,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:27,088 INFO L87 Difference]: Start difference. First operand 68567 states and 127938 transitions. Second operand 6 states. [2020-12-22 06:01:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:40,009 INFO L93 Difference]: Finished difference Result 286820 states and 534418 transitions. [2020-12-22 06:01:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:01:40,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 06:01:40,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:40,474 INFO L225 Difference]: With dead ends: 286820 [2020-12-22 06:01:40,474 INFO L226 Difference]: Without dead ends: 232344 [2020-12-22 06:01:40,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-22 06:01:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232344 states. [2020-12-22 06:01:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232344 to 116004. [2020-12-22 06:01:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116004 states. [2020-12-22 06:01:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116004 states to 116004 states and 215903 transitions. [2020-12-22 06:01:49,785 INFO L78 Accepts]: Start accepts. Automaton has 116004 states and 215903 transitions. Word has length 99 [2020-12-22 06:01:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:49,785 INFO L481 AbstractCegarLoop]: Abstraction has 116004 states and 215903 transitions. [2020-12-22 06:01:49,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:49,785 INFO L276 IsEmpty]: Start isEmpty. Operand 116004 states and 215903 transitions. [2020-12-22 06:01:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 06:01:49,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:49,788 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 06:01:49,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:01:49,789 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:49,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1515884260, now seen corresponding path program 1 times [2020-12-22 06:01:49,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:49,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594504690] [2020-12-22 06:01:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:49,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594504690] [2020-12-22 06:01:49,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:49,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:49,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982404682] [2020-12-22 06:01:49,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:49,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:49,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:49,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:49,881 INFO L87 Difference]: Start difference. First operand 116004 states and 215903 transitions. Second operand 6 states. [2020-12-22 06:02:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:01,717 INFO L93 Difference]: Finished difference Result 283210 states and 524746 transitions. [2020-12-22 06:02:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:01,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-12-22 06:02:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:02,252 INFO L225 Difference]: With dead ends: 283210 [2020-12-22 06:02:02,252 INFO L226 Difference]: Without dead ends: 181712 [2020-12-22 06:02:02,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:02:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181712 states. [2020-12-22 06:02:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181712 to 116394. [2020-12-22 06:02:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116394 states. [2020-12-22 06:02:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116394 states to 116394 states and 216293 transitions. [2020-12-22 06:02:10,883 INFO L78 Accepts]: Start accepts. Automaton has 116394 states and 216293 transitions. Word has length 101 [2020-12-22 06:02:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:10,883 INFO L481 AbstractCegarLoop]: Abstraction has 116394 states and 216293 transitions. [2020-12-22 06:02:10,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 116394 states and 216293 transitions. [2020-12-22 06:02:10,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 06:02:10,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:10,888 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] [2020-12-22 06:02:10,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:02:10,888 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:10,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1009368732, now seen corresponding path program 1 times [2020-12-22 06:02:10,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:10,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000582872] [2020-12-22 06:02:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:11,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000582872] [2020-12-22 06:02:11,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:11,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:02:11,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064242550] [2020-12-22 06:02:11,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:11,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:11,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:11,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:11,208 INFO L87 Difference]: Start difference. First operand 116394 states and 216293 transitions. Second operand 3 states. [2020-12-22 06:02:22,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:22,584 INFO L93 Difference]: Finished difference Result 265306 states and 491571 transitions. [2020-12-22 06:02:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:22,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 06:02:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:23,005 INFO L225 Difference]: With dead ends: 265306 [2020-12-22 06:02:23,005 INFO L226 Difference]: Without dead ends: 162826 [2020-12-22 06:02:23,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162826 states. [2020-12-22 06:02:34,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162826 to 162363. [2020-12-22 06:02:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162363 states. [2020-12-22 06:02:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162363 states to 162363 states and 297743 transitions. [2020-12-22 06:02:34,410 INFO L78 Accepts]: Start accepts. Automaton has 162363 states and 297743 transitions. Word has length 106 [2020-12-22 06:02:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:34,410 INFO L481 AbstractCegarLoop]: Abstraction has 162363 states and 297743 transitions. [2020-12-22 06:02:34,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 162363 states and 297743 transitions. [2020-12-22 06:02:34,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:02:34,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:34,428 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] [2020-12-22 06:02:34,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:02:34,429 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:34,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:34,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1147788177, now seen corresponding path program 1 times [2020-12-22 06:02:34,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:34,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023586303] [2020-12-22 06:02:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:34,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023586303] [2020-12-22 06:02:34,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:34,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:34,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841497471] [2020-12-22 06:02:34,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:34,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:34,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:34,899 INFO L87 Difference]: Start difference. First operand 162363 states and 297743 transitions. Second operand 5 states. [2020-12-22 06:02:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:55,283 INFO L93 Difference]: Finished difference Result 424806 states and 782815 transitions. [2020-12-22 06:02:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:55,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 06:02:55,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:55,912 INFO L225 Difference]: With dead ends: 424806 [2020-12-22 06:02:55,912 INFO L226 Difference]: Without dead ends: 276404 [2020-12-22 06:02:56,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276404 states.