/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_spec3_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:08:24,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:08:24,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:08:24,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:08:24,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:08:24,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:08:24,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:08:24,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:08:24,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:08:24,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:08:24,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:08:24,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:08:24,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:08:24,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:08:24,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:08:24,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:08:24,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:08:24,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:08:24,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:08:24,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:08:24,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:08:24,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:08:24,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:08:24,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:08:24,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:08:24,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:08:24,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:08:24,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:08:24,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:08:24,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:08:24,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:08:24,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:08:24,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:08:24,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:08:24,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:08:24,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:08:24,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:08:24,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:08:24,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:08:24,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:08:24,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:08:24,575 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:08:24,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:08:24,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:08:24,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:08:24,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:08:24,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:08:24,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:08:24,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:08:24,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:08:24,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:08:24,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:08:24,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:08:24,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:08:24,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:08:24,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:08:24,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:08:24,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:08:24,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:08:24,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:08:24,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:08:24,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:08:24,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:08:25,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:08:25,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:08:25,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:08:25,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:08:25,049 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:08:25,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2020-12-22 06:08:25,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2c14fd1/61e520fe5cbb48f5b8cfe2c058c0ff70/FLAG2360d1931 [2020-12-22 06:08:25,894 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:08:25,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2020-12-22 06:08:25,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2c14fd1/61e520fe5cbb48f5b8cfe2c058c0ff70/FLAG2360d1931 [2020-12-22 06:08:26,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2c14fd1/61e520fe5cbb48f5b8cfe2c058c0ff70 [2020-12-22 06:08:26,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:08:26,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:08:26,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:08:26,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:08:26,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:08:26,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:08:26" (1/1) ... [2020-12-22 06:08:26,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d04346b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:26, skipping insertion in model container [2020-12-22 06:08:26,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:08:26" (1/1) ... [2020-12-22 06:08:26,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:08:26,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:08:26,802 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_spec3_product01.cil.c[40088,40101] [2020-12-22 06:08:26,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:08:27,001 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:08:27,077 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_spec3_product01.cil.c[40088,40101] [2020-12-22 06:08:27,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:08:27,192 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:08:27,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27 WrapperNode [2020-12-22 06:08:27,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:08:27,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:08:27,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:08:27,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:08:27,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:27,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:27,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:08:27,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:08:27,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:08:27,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:08:27,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:27,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:27,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:27,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:27,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:28,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:28,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... [2020-12-22 06:08:28,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:08:28,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:08:28,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:08:28,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:08:28,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:08:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:08:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:08:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:08:28,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:08:40,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:08:40,293 INFO L299 CfgBuilder]: Removed 1107 assume(true) statements. [2020-12-22 06:08:40,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:08:40 BoogieIcfgContainer [2020-12-22 06:08:40,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:08:40,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:08:40,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:08:40,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:08:40,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:08:26" (1/3) ... [2020-12-22 06:08:40,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d61e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:08:40, skipping insertion in model container [2020-12-22 06:08:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:08:27" (2/3) ... [2020-12-22 06:08:40,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d61e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:08:40, skipping insertion in model container [2020-12-22 06:08:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:08:40" (3/3) ... [2020-12-22 06:08:40,311 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product01.cil.c [2020-12-22 06:08:40,319 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:08:40,328 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:08:40,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:08:40,400 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:08:40,400 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:08:40,401 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:08:40,401 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:08:40,401 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:08:40,401 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:08:40,401 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:08:40,401 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:08:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states. [2020-12-22 06:08:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 06:08:40,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:40,509 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] [2020-12-22 06:08:40,510 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:40,517 INFO L82 PathProgramCache]: Analyzing trace with hash 447399383, now seen corresponding path program 1 times [2020-12-22 06:08:40,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:40,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767443000] [2020-12-22 06:08:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:40,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767443000] [2020-12-22 06:08:40,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:40,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:40,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124381493] [2020-12-22 06:08:41,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:41,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:41,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:41,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:41,019 INFO L87 Difference]: Start difference. First operand 5593 states. Second operand 4 states. [2020-12-22 06:08:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:42,083 INFO L93 Difference]: Finished difference Result 22197 states and 42229 transitions. [2020-12-22 06:08:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:42,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-22 06:08:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:42,234 INFO L225 Difference]: With dead ends: 22197 [2020-12-22 06:08:42,235 INFO L226 Difference]: Without dead ends: 16617 [2020-12-22 06:08:42,266 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 06:08:42,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16617 states. [2020-12-22 06:08:42,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16617 to 5601. [2020-12-22 06:08:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5601 states. [2020-12-22 06:08:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5601 states to 5601 states and 10633 transitions. [2020-12-22 06:08:42,656 INFO L78 Accepts]: Start accepts. Automaton has 5601 states and 10633 transitions. Word has length 41 [2020-12-22 06:08:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:42,657 INFO L481 AbstractCegarLoop]: Abstraction has 5601 states and 10633 transitions. [2020-12-22 06:08:42,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5601 states and 10633 transitions. [2020-12-22 06:08:42,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 06:08:42,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:42,667 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] [2020-12-22 06:08:42,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:08:42,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:42,670 INFO L82 PathProgramCache]: Analyzing trace with hash -2063413258, now seen corresponding path program 1 times [2020-12-22 06:08:42,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:42,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492331358] [2020-12-22 06:08:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:42,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492331358] [2020-12-22 06:08:42,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:42,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:42,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077346272] [2020-12-22 06:08:42,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:42,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:42,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:42,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:42,866 INFO L87 Difference]: Start difference. First operand 5601 states and 10633 transitions. Second operand 3 states. [2020-12-22 06:08:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:43,049 INFO L93 Difference]: Finished difference Result 11118 states and 21113 transitions. [2020-12-22 06:08:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:43,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 06:08:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:43,111 INFO L225 Difference]: With dead ends: 11118 [2020-12-22 06:08:43,112 INFO L226 Difference]: Without dead ends: 5531 [2020-12-22 06:08:43,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2020-12-22 06:08:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2020-12-22 06:08:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5531 states. [2020-12-22 06:08:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10493 transitions. [2020-12-22 06:08:43,307 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10493 transitions. Word has length 42 [2020-12-22 06:08:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:43,308 INFO L481 AbstractCegarLoop]: Abstraction has 5531 states and 10493 transitions. [2020-12-22 06:08:43,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:08:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10493 transitions. [2020-12-22 06:08:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:08:43,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:43,313 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] [2020-12-22 06:08:43,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:08:43,314 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:43,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:43,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1460966817, now seen corresponding path program 1 times [2020-12-22 06:08:43,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:43,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713269652] [2020-12-22 06:08:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:43,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713269652] [2020-12-22 06:08:43,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:43,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:43,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149347863] [2020-12-22 06:08:43,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:43,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:43,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:43,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:43,474 INFO L87 Difference]: Start difference. First operand 5531 states and 10493 transitions. Second operand 4 states. [2020-12-22 06:08:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:43,761 INFO L93 Difference]: Finished difference Result 11036 states and 20949 transitions. [2020-12-22 06:08:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:43,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 06:08:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:43,782 INFO L225 Difference]: With dead ends: 11036 [2020-12-22 06:08:43,782 INFO L226 Difference]: Without dead ends: 5531 [2020-12-22 06:08:43,794 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 06:08:43,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2020-12-22 06:08:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2020-12-22 06:08:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5531 states. [2020-12-22 06:08:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10491 transitions. [2020-12-22 06:08:43,988 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10491 transitions. Word has length 45 [2020-12-22 06:08:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:43,993 INFO L481 AbstractCegarLoop]: Abstraction has 5531 states and 10491 transitions. [2020-12-22 06:08:43,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10491 transitions. [2020-12-22 06:08:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 06:08:43,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:43,997 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] [2020-12-22 06:08:43,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:08:43,997 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:43,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:43,998 INFO L82 PathProgramCache]: Analyzing trace with hash -265285436, now seen corresponding path program 1 times [2020-12-22 06:08:43,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:43,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736006926] [2020-12-22 06:08:43,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:44,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736006926] [2020-12-22 06:08:44,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:44,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:44,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103478030] [2020-12-22 06:08:44,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:44,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:44,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:44,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:44,112 INFO L87 Difference]: Start difference. First operand 5531 states and 10491 transitions. Second operand 4 states. [2020-12-22 06:08:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:44,548 INFO L93 Difference]: Finished difference Result 11036 states and 20946 transitions. [2020-12-22 06:08:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:44,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 06:08:44,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:44,565 INFO L225 Difference]: With dead ends: 11036 [2020-12-22 06:08:44,566 INFO L226 Difference]: Without dead ends: 5531 [2020-12-22 06:08:44,575 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 06:08:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2020-12-22 06:08:44,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2020-12-22 06:08:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5531 states. [2020-12-22 06:08:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10489 transitions. [2020-12-22 06:08:44,754 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10489 transitions. Word has length 46 [2020-12-22 06:08:44,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:44,754 INFO L481 AbstractCegarLoop]: Abstraction has 5531 states and 10489 transitions. [2020-12-22 06:08:44,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10489 transitions. [2020-12-22 06:08:44,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:08:44,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:44,757 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] [2020-12-22 06:08:44,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:08:44,757 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:44,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:44,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1611640196, now seen corresponding path program 1 times [2020-12-22 06:08:44,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:44,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820550527] [2020-12-22 06:08:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:44,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820550527] [2020-12-22 06:08:44,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:44,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:44,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895875470] [2020-12-22 06:08:44,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:44,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:44,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:44,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:44,879 INFO L87 Difference]: Start difference. First operand 5531 states and 10489 transitions. Second operand 4 states. [2020-12-22 06:08:45,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:45,199 INFO L93 Difference]: Finished difference Result 11036 states and 20943 transitions. [2020-12-22 06:08:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:45,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:08:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:45,220 INFO L225 Difference]: With dead ends: 11036 [2020-12-22 06:08:45,220 INFO L226 Difference]: Without dead ends: 5531 [2020-12-22 06:08:45,230 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 06:08:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2020-12-22 06:08:45,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2020-12-22 06:08:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5531 states. [2020-12-22 06:08:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10487 transitions. [2020-12-22 06:08:45,446 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10487 transitions. Word has length 47 [2020-12-22 06:08:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:45,449 INFO L481 AbstractCegarLoop]: Abstraction has 5531 states and 10487 transitions. [2020-12-22 06:08:45,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10487 transitions. [2020-12-22 06:08:45,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:08:45,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:45,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:45,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:08:45,453 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:45,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:45,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1162666167, now seen corresponding path program 1 times [2020-12-22 06:08:45,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:45,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384326700] [2020-12-22 06:08:45,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:45,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384326700] [2020-12-22 06:08:45,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:45,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:08:45,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839142755] [2020-12-22 06:08:45,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:45,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:45,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:45,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:45,577 INFO L87 Difference]: Start difference. First operand 5531 states and 10487 transitions. Second operand 4 states. [2020-12-22 06:08:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:45,884 INFO L93 Difference]: Finished difference Result 11036 states and 20940 transitions. [2020-12-22 06:08:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:08:45,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-22 06:08:45,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:45,901 INFO L225 Difference]: With dead ends: 11036 [2020-12-22 06:08:45,901 INFO L226 Difference]: Without dead ends: 5531 [2020-12-22 06:08:45,911 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 06:08:45,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2020-12-22 06:08:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2020-12-22 06:08:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5531 states. [2020-12-22 06:08:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10485 transitions. [2020-12-22 06:08:46,102 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10485 transitions. Word has length 48 [2020-12-22 06:08:46,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:46,102 INFO L481 AbstractCegarLoop]: Abstraction has 5531 states and 10485 transitions. [2020-12-22 06:08:46,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10485 transitions. [2020-12-22 06:08:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:08:46,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:46,104 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] [2020-12-22 06:08:46,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:08:46,104 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:46,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:46,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2096276311, now seen corresponding path program 1 times [2020-12-22 06:08:46,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:46,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095837137] [2020-12-22 06:08:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:46,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095837137] [2020-12-22 06:08:46,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:46,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:08:46,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041676064] [2020-12-22 06:08:46,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:08:46,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:46,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:08:46,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:08:46,222 INFO L87 Difference]: Start difference. First operand 5531 states and 10485 transitions. Second operand 7 states. [2020-12-22 06:08:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:47,998 INFO L93 Difference]: Finished difference Result 19698 states and 37264 transitions. [2020-12-22 06:08:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:08:47,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-12-22 06:08:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:48,042 INFO L225 Difference]: With dead ends: 19698 [2020-12-22 06:08:48,043 INFO L226 Difference]: Without dead ends: 14237 [2020-12-22 06:08:48,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:08:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14237 states. [2020-12-22 06:08:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14237 to 9691. [2020-12-22 06:08:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9691 states. [2020-12-22 06:08:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 18387 transitions. [2020-12-22 06:08:48,517 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 18387 transitions. Word has length 49 [2020-12-22 06:08:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:48,517 INFO L481 AbstractCegarLoop]: Abstraction has 9691 states and 18387 transitions. [2020-12-22 06:08:48,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:08:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 18387 transitions. [2020-12-22 06:08:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:08:48,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:48,519 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] [2020-12-22 06:08:48,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:08:48,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:48,520 INFO L82 PathProgramCache]: Analyzing trace with hash 2016675758, now seen corresponding path program 1 times [2020-12-22 06:08:48,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:48,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433491338] [2020-12-22 06:08:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:48,631 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 06:08:48,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433491338] [2020-12-22 06:08:48,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:48,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:48,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294068064] [2020-12-22 06:08:48,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:48,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:48,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:48,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:48,634 INFO L87 Difference]: Start difference. First operand 9691 states and 18387 transitions. Second operand 5 states. [2020-12-22 06:08:52,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:52,992 INFO L93 Difference]: Finished difference Result 80460 states and 152820 transitions. [2020-12-22 06:08:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:08:52,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:08:52,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:53,300 INFO L225 Difference]: With dead ends: 80460 [2020-12-22 06:08:53,300 INFO L226 Difference]: Without dead ends: 70839 [2020-12-22 06:08:53,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:08:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70839 states. [2020-12-22 06:08:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70839 to 18235. [2020-12-22 06:08:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18235 states. [2020-12-22 06:08:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18235 states to 18235 states and 34585 transitions. [2020-12-22 06:08:54,741 INFO L78 Accepts]: Start accepts. Automaton has 18235 states and 34585 transitions. Word has length 49 [2020-12-22 06:08:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:54,743 INFO L481 AbstractCegarLoop]: Abstraction has 18235 states and 34585 transitions. [2020-12-22 06:08:54,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 18235 states and 34585 transitions. [2020-12-22 06:08:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:08:54,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:54,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:54,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:08:54,747 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:54,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:54,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1936380238, now seen corresponding path program 1 times [2020-12-22 06:08:54,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:54,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908279561] [2020-12-22 06:08:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:54,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908279561] [2020-12-22 06:08:54,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:54,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:54,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525879076] [2020-12-22 06:08:54,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:54,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:54,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:54,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:54,843 INFO L87 Difference]: Start difference. First operand 18235 states and 34585 transitions. Second operand 3 states. [2020-12-22 06:08:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:56,387 INFO L93 Difference]: Finished difference Result 53785 states and 102039 transitions. [2020-12-22 06:08:56,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:56,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-22 06:08:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:56,493 INFO L225 Difference]: With dead ends: 53785 [2020-12-22 06:08:56,494 INFO L226 Difference]: Without dead ends: 35582 [2020-12-22 06:08:56,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35582 states. [2020-12-22 06:08:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35582 to 18111. [2020-12-22 06:08:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18111 states. [2020-12-22 06:08:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18111 states to 18111 states and 34337 transitions. [2020-12-22 06:08:57,684 INFO L78 Accepts]: Start accepts. Automaton has 18111 states and 34337 transitions. Word has length 50 [2020-12-22 06:08:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:57,684 INFO L481 AbstractCegarLoop]: Abstraction has 18111 states and 34337 transitions. [2020-12-22 06:08:57,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:08:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 18111 states and 34337 transitions. [2020-12-22 06:08:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:08:57,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:57,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:57,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:08:57,687 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:57,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:57,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1537728245, now seen corresponding path program 1 times [2020-12-22 06:08:57,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:57,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352890095] [2020-12-22 06:08:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:57,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352890095] [2020-12-22 06:08:57,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:57,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:57,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552887125] [2020-12-22 06:08:57,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:57,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:57,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:57,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:57,766 INFO L87 Difference]: Start difference. First operand 18111 states and 34337 transitions. Second operand 5 states. [2020-12-22 06:09:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:00,517 INFO L93 Difference]: Finished difference Result 43310 states and 81966 transitions. [2020-12-22 06:09:00,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:09:00,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-12-22 06:09:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:00,561 INFO L225 Difference]: With dead ends: 43310 [2020-12-22 06:09:00,561 INFO L226 Difference]: Without dead ends: 25233 [2020-12-22 06:09:00,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 06:09:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25233 states. [2020-12-22 06:09:01,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25233 to 24815. [2020-12-22 06:09:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2020-12-22 06:09:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 46633 transitions. [2020-12-22 06:09:01,715 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 46633 transitions. Word has length 50 [2020-12-22 06:09:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:01,715 INFO L481 AbstractCegarLoop]: Abstraction has 24815 states and 46633 transitions. [2020-12-22 06:09:01,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 46633 transitions. [2020-12-22 06:09:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:09:01,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:01,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:01,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:09:01,717 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:09:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1088525188, now seen corresponding path program 1 times [2020-12-22 06:09:01,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:01,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856215314] [2020-12-22 06:09:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:01,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856215314] [2020-12-22 06:09:01,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:01,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:01,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953984789] [2020-12-22 06:09:01,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:01,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:01,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:01,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:01,800 INFO L87 Difference]: Start difference. First operand 24815 states and 46633 transitions. Second operand 5 states. [2020-12-22 06:09:03,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:03,853 INFO L93 Difference]: Finished difference Result 73316 states and 137923 transitions. [2020-12-22 06:09:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:09:03,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 06:09:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:03,937 INFO L225 Difference]: With dead ends: 73316 [2020-12-22 06:09:03,937 INFO L226 Difference]: Without dead ends: 48541 [2020-12-22 06:09:03,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:09:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48541 states. [2020-12-22 06:09:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48541 to 24815. [2020-12-22 06:09:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2020-12-22 06:09:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 46522 transitions. [2020-12-22 06:09:05,091 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 46522 transitions. Word has length 54 [2020-12-22 06:09:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:05,092 INFO L481 AbstractCegarLoop]: Abstraction has 24815 states and 46522 transitions. [2020-12-22 06:09:05,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:05,092 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 46522 transitions. [2020-12-22 06:09:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:09:05,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:05,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:05,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:09:05,094 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:09:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:05,094 INFO L82 PathProgramCache]: Analyzing trace with hash 211070977, now seen corresponding path program 1 times [2020-12-22 06:09:05,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:05,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908451777] [2020-12-22 06:09:05,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:05,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908451777] [2020-12-22 06:09:05,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:05,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:05,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640706603] [2020-12-22 06:09:05,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:05,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:05,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:05,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:05,176 INFO L87 Difference]: Start difference. First operand 24815 states and 46522 transitions. Second operand 5 states. [2020-12-22 06:09:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:11,815 INFO L93 Difference]: Finished difference Result 210855 states and 396670 transitions. [2020-12-22 06:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:09:11,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:09:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:12,350 INFO L225 Difference]: With dead ends: 210855 [2020-12-22 06:09:12,350 INFO L226 Difference]: Without dead ends: 186099 [2020-12-22 06:09:12,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:09:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186099 states. [2020-12-22 06:09:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186099 to 47857. [2020-12-22 06:09:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47857 states. [2020-12-22 06:09:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47857 states to 47857 states and 89658 transitions. [2020-12-22 06:09:15,246 INFO L78 Accepts]: Start accepts. Automaton has 47857 states and 89658 transitions. Word has length 55 [2020-12-22 06:09:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:15,246 INFO L481 AbstractCegarLoop]: Abstraction has 47857 states and 89658 transitions. [2020-12-22 06:09:15,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 47857 states and 89658 transitions. [2020-12-22 06:09:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:09:15,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:15,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:15,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:09:15,248 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:09:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1508812663, now seen corresponding path program 1 times [2020-12-22 06:09:15,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:15,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699506280] [2020-12-22 06:09:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:15,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699506280] [2020-12-22 06:09:15,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:15,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:15,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798701318] [2020-12-22 06:09:15,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:15,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:15,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:15,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:15,303 INFO L87 Difference]: Start difference. First operand 47857 states and 89658 transitions. Second operand 3 states. [2020-12-22 06:09:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:18,511 INFO L93 Difference]: Finished difference Result 141599 states and 265664 transitions. [2020-12-22 06:09:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:18,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:09:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:18,687 INFO L225 Difference]: With dead ends: 141599 [2020-12-22 06:09:18,687 INFO L226 Difference]: Without dead ends: 93779 [2020-12-22 06:09:18,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93779 states. [2020-12-22 06:09:20,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93779 to 47603. [2020-12-22 06:09:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47603 states. [2020-12-22 06:09:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47603 states to 47603 states and 89157 transitions. [2020-12-22 06:09:20,748 INFO L78 Accepts]: Start accepts. Automaton has 47603 states and 89157 transitions. Word has length 56 [2020-12-22 06:09:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:20,748 INFO L481 AbstractCegarLoop]: Abstraction has 47603 states and 89157 transitions. [2020-12-22 06:09:20,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 47603 states and 89157 transitions. [2020-12-22 06:09:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:09:20,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:20,750 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 06:09:20,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:09:20,751 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:09:20,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:20,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1453398781, now seen corresponding path program 1 times [2020-12-22 06:09:20,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:20,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464945298] [2020-12-22 06:09:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:20,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464945298] [2020-12-22 06:09:20,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:20,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:20,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218382995] [2020-12-22 06:09:20,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:20,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:20,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:20,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:20,818 INFO L87 Difference]: Start difference. First operand 47603 states and 89157 transitions. Second operand 3 states. [2020-12-22 06:09:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:24,128 INFO L93 Difference]: Finished difference Result 141098 states and 264691 transitions. [2020-12-22 06:09:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:24,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 06:09:24,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:24,303 INFO L225 Difference]: With dead ends: 141098 [2020-12-22 06:09:24,303 INFO L226 Difference]: Without dead ends: 93538 [2020-12-22 06:09:24,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:24,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93538 states. [2020-12-22 06:09:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93538 to 47491. [2020-12-22 06:09:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47491 states. [2020-12-22 06:09:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47491 states to 47491 states and 88821 transitions. [2020-12-22 06:09:26,296 INFO L78 Accepts]: Start accepts. Automaton has 47491 states and 88821 transitions. Word has length 60 [2020-12-22 06:09:26,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:26,296 INFO L481 AbstractCegarLoop]: Abstraction has 47491 states and 88821 transitions. [2020-12-22 06:09:26,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand 47491 states and 88821 transitions. [2020-12-22 06:09:26,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:09:26,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:26,297 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 06:09:26,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:09:26,298 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:09:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:26,298 INFO L82 PathProgramCache]: Analyzing trace with hash -808515020, now seen corresponding path program 1 times [2020-12-22 06:09:26,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:26,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683159206] [2020-12-22 06:09:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:26,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683159206] [2020-12-22 06:09:26,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:26,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:26,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326022814] [2020-12-22 06:09:26,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:26,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:26,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:26,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:26,371 INFO L87 Difference]: Start difference. First operand 47491 states and 88821 transitions. Second operand 5 states. [2020-12-22 06:09:38,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:38,692 INFO L93 Difference]: Finished difference Result 394523 states and 741234 transitions. [2020-12-22 06:09:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:09:38,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 06:09:38,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:39,738 INFO L225 Difference]: With dead ends: 394523 [2020-12-22 06:09:39,739 INFO L226 Difference]: Without dead ends: 347086 [2020-12-22 06:09:39,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:09:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347086 states. [2020-12-22 06:09:45,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347086 to 92567. [2020-12-22 06:09:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92567 states. [2020-12-22 06:09:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92567 states to 92567 states and 173015 transitions. [2020-12-22 06:09:45,393 INFO L78 Accepts]: Start accepts. Automaton has 92567 states and 173015 transitions. Word has length 61 [2020-12-22 06:09:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:45,394 INFO L481 AbstractCegarLoop]: Abstraction has 92567 states and 173015 transitions. [2020-12-22 06:09:45,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 92567 states and 173015 transitions. [2020-12-22 06:09:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:09:45,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:45,395 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 06:09:45,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:09:45,396 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:09:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:45,399 INFO L82 PathProgramCache]: Analyzing trace with hash 242751651, now seen corresponding path program 1 times [2020-12-22 06:09:45,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:45,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971311478] [2020-12-22 06:09:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:45,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971311478] [2020-12-22 06:09:45,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:45,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:45,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604890411] [2020-12-22 06:09:45,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:45,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:45,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:45,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:45,469 INFO L87 Difference]: Start difference. First operand 92567 states and 173015 transitions. Second operand 3 states. [2020-12-22 06:09:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:51,914 INFO L93 Difference]: Finished difference Result 274498 states and 514237 transitions. [2020-12-22 06:09:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:51,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:09:51,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:52,361 INFO L225 Difference]: With dead ends: 274498 [2020-12-22 06:09:52,361 INFO L226 Difference]: Without dead ends: 181981 [2020-12-22 06:09:52,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181981 states. [2020-12-22 06:09:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181981 to 92459. [2020-12-22 06:09:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92459 states. [2020-12-22 06:09:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92459 states to 92459 states and 172475 transitions. [2020-12-22 06:09:56,960 INFO L78 Accepts]: Start accepts. Automaton has 92459 states and 172475 transitions. Word has length 66 [2020-12-22 06:09:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:56,961 INFO L481 AbstractCegarLoop]: Abstraction has 92459 states and 172475 transitions. [2020-12-22 06:09:56,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 92459 states and 172475 transitions. [2020-12-22 06:09:56,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:09:56,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:56,966 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 06:09:56,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:09:56,966 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:09:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1382203262, now seen corresponding path program 1 times [2020-12-22 06:09:56,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:56,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514896786] [2020-12-22 06:09:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:57,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514896786] [2020-12-22 06:09:57,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:57,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:57,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651588015] [2020-12-22 06:09:57,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:57,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:57,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:57,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:57,053 INFO L87 Difference]: Start difference. First operand 92459 states and 172475 transitions. Second operand 5 states. [2020-12-22 06:10:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:18,449 INFO L93 Difference]: Finished difference Result 778313 states and 1460622 transitions. [2020-12-22 06:10:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:10:18,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:10:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:20,258 INFO L225 Difference]: With dead ends: 778313 [2020-12-22 06:10:20,258 INFO L226 Difference]: Without dead ends: 685907 [2020-12-22 06:10:20,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:10:20,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685907 states. [2020-12-22 06:10:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685907 to 181331. [2020-12-22 06:10:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181331 states. [2020-12-22 06:10:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181331 states to 181331 states and 337917 transitions. [2020-12-22 06:10:34,234 INFO L78 Accepts]: Start accepts. Automaton has 181331 states and 337917 transitions. Word has length 68 [2020-12-22 06:10:34,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:34,235 INFO L481 AbstractCegarLoop]: Abstraction has 181331 states and 337917 transitions. [2020-12-22 06:10:34,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:10:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 181331 states and 337917 transitions. [2020-12-22 06:10:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:10:34,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:34,236 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 06:10:34,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:10:34,237 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:34,237 INFO L82 PathProgramCache]: Analyzing trace with hash 474655701, now seen corresponding path program 1 times [2020-12-22 06:10:34,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:34,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020668065] [2020-12-22 06:10:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:34,455 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 06:10:34,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020668065] [2020-12-22 06:10:34,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:34,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:10:34,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340727560] [2020-12-22 06:10:34,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:10:34,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:34,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:10:34,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:10:34,460 INFO L87 Difference]: Start difference. First operand 181331 states and 337917 transitions. Second operand 7 states. [2020-12-22 06:10:57,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:57,168 INFO L93 Difference]: Finished difference Result 530349 states and 983677 transitions. [2020-12-22 06:10:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:10:57,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-22 06:10:57,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:58,087 INFO L225 Difference]: With dead ends: 530349 [2020-12-22 06:10:58,088 INFO L226 Difference]: Without dead ends: 349077 [2020-12-22 06:10:58,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:10:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349077 states. [2020-12-22 06:11:09,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349077 to 254611. [2020-12-22 06:11:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254611 states. [2020-12-22 06:11:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254611 states to 254611 states and 472448 transitions. [2020-12-22 06:11:10,079 INFO L78 Accepts]: Start accepts. Automaton has 254611 states and 472448 transitions. Word has length 69 [2020-12-22 06:11:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:10,080 INFO L481 AbstractCegarLoop]: Abstraction has 254611 states and 472448 transitions. [2020-12-22 06:11:10,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:11:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 254611 states and 472448 transitions. [2020-12-22 06:11:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:11:10,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:10,081 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 06:11:10,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:11:10,082 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:10,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1404322585, now seen corresponding path program 1 times [2020-12-22 06:11:10,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:10,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209697732] [2020-12-22 06:11:10,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:11:10,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209697732] [2020-12-22 06:11:10,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:10,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:11:10,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532064639] [2020-12-22 06:11:10,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:11:10,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:10,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:11:10,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:11:10,189 INFO L87 Difference]: Start difference. First operand 254611 states and 472448 transitions. Second operand 7 states. [2020-12-22 06:11:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:33,985 INFO L93 Difference]: Finished difference Result 617196 states and 1140284 transitions. [2020-12-22 06:11:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:11:33,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-12-22 06:11:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:35,018 INFO L225 Difference]: With dead ends: 617196 [2020-12-22 06:11:35,019 INFO L226 Difference]: Without dead ends: 362644 [2020-12-22 06:11:35,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:11:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362644 states.