/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/email_spec11_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:20:34,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:20:34,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:20:34,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:20:34,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:20:34,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:20:34,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:20:34,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:20:34,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:20:34,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:20:34,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:20:34,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:20:34,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:20:34,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:20:34,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:20:34,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:20:34,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:20:34,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:20:34,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:20:34,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:20:34,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:20:34,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:20:34,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:20:34,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:20:34,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:20:34,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:20:34,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:20:34,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:20:34,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:20:34,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:20:34,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:20:34,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:20:34,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:20:34,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:20:34,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:20:34,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:20:34,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:20:34,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:20:34,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:20:34,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:20:34,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:20:34,658 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:20:34,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:20:34,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:20:34,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:20:34,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:20:34,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:20:34,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:20:34,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:20:34,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:20:34,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:20:34,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:20:34,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:20:34,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:20:34,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:20:34,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:20:34,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:20:34,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:20:34,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:20:34,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:20:34,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:20:34,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:20:34,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:20:35,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:20:35,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:20:35,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:20:35,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:20:35,075 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:20:35,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product23.cil.c [2020-12-22 06:20:35,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8535ce9d2/c7f63f83c677492199921f24cf31ce06/FLAG0892eab6e [2020-12-22 06:20:35,895 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:20:35,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product23.cil.c [2020-12-22 06:20:35,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8535ce9d2/c7f63f83c677492199921f24cf31ce06/FLAG0892eab6e [2020-12-22 06:20:36,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8535ce9d2/c7f63f83c677492199921f24cf31ce06 [2020-12-22 06:20:36,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:20:36,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:20:36,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:20:36,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:20:36,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:20:36,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:20:36" (1/1) ... [2020-12-22 06:20:36,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6158d78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:36, skipping insertion in model container [2020-12-22 06:20:36,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:20:36" (1/1) ... [2020-12-22 06:20:36,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:20:36,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:20:36,903 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/email_spec11_product23.cil.c[40421,40434] [2020-12-22 06:20:37,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:20:37,106 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:20:37,208 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/email_spec11_product23.cil.c[40421,40434] [2020-12-22 06:20:37,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:20:37,333 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:20:37,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37 WrapperNode [2020-12-22 06:20:37,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:20:37,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:20:37,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:20:37,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:20:37,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (1/1) ... [2020-12-22 06:20:37,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (1/1) ... [2020-12-22 06:20:37,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:20:37,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:20:37,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:20:37,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:20:37,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (1/1) ... [2020-12-22 06:20:37,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (1/1) ... [2020-12-22 06:20:37,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (1/1) ... [2020-12-22 06:20:37,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (1/1) ... [2020-12-22 06:20:37,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (1/1) ... [2020-12-22 06:20:37,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (1/1) ... [2020-12-22 06:20:37,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (1/1) ... [2020-12-22 06:20:37,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:20:37,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:20:37,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:20:37,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:20:37,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (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 06:20:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-12-22 06:20:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:20:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:20:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:20:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:20:41,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:20:41,297 INFO L299 CfgBuilder]: Removed 501 assume(true) statements. [2020-12-22 06:20:41,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:20:41 BoogieIcfgContainer [2020-12-22 06:20:41,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:20:41,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:20:41,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:20:41,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:20:41,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:20:36" (1/3) ... [2020-12-22 06:20:41,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce50618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:20:41, skipping insertion in model container [2020-12-22 06:20:41,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:20:37" (2/3) ... [2020-12-22 06:20:41,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce50618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:20:41, skipping insertion in model container [2020-12-22 06:20:41,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:20:41" (3/3) ... [2020-12-22 06:20:41,316 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product23.cil.c [2020-12-22 06:20:41,324 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:20:41,330 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 06:20:41,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 06:20:41,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:20:41,403 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:20:41,403 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:20:41,403 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:20:41,403 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:20:41,404 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:20:41,404 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:20:41,404 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:20:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states. [2020-12-22 06:20:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:20:41,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:41,467 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 06:20:41,467 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:41,474 INFO L82 PathProgramCache]: Analyzing trace with hash -652750623, now seen corresponding path program 1 times [2020-12-22 06:20:41,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:41,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011856365] [2020-12-22 06:20:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:20:41,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011856365] [2020-12-22 06:20:41,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:41,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:41,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537077423] [2020-12-22 06:20:41,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:41,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:41,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:41,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:41,988 INFO L87 Difference]: Start difference. First operand 756 states. Second operand 3 states. [2020-12-22 06:20:42,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:42,195 INFO L93 Difference]: Finished difference Result 2233 states and 3890 transitions. [2020-12-22 06:20:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:42,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:20:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:42,235 INFO L225 Difference]: With dead ends: 2233 [2020-12-22 06:20:42,236 INFO L226 Difference]: Without dead ends: 1456 [2020-12-22 06:20:42,247 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 06:20:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-12-22 06:20:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 737. [2020-12-22 06:20:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-12-22 06:20:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1273 transitions. [2020-12-22 06:20:42,406 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1273 transitions. Word has length 48 [2020-12-22 06:20:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:42,406 INFO L481 AbstractCegarLoop]: Abstraction has 737 states and 1273 transitions. [2020-12-22 06:20:42,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:42,407 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1273 transitions. [2020-12-22 06:20:42,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:20:42,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:42,414 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 06:20:42,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:20:42,415 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:42,418 INFO L82 PathProgramCache]: Analyzing trace with hash -536223297, now seen corresponding path program 1 times [2020-12-22 06:20:42,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:42,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114888777] [2020-12-22 06:20:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:42,671 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 06:20:42,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114888777] [2020-12-22 06:20:42,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:42,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:42,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058664791] [2020-12-22 06:20:42,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:42,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:42,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:42,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:42,677 INFO L87 Difference]: Start difference. First operand 737 states and 1273 transitions. Second operand 5 states. [2020-12-22 06:20:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:42,962 INFO L93 Difference]: Finished difference Result 2160 states and 3735 transitions. [2020-12-22 06:20:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:20:42,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-12-22 06:20:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:42,979 INFO L225 Difference]: With dead ends: 2160 [2020-12-22 06:20:42,980 INFO L226 Difference]: Without dead ends: 1442 [2020-12-22 06:20:42,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:20:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2020-12-22 06:20:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 737. [2020-12-22 06:20:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-12-22 06:20:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1272 transitions. [2020-12-22 06:20:43,037 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1272 transitions. Word has length 50 [2020-12-22 06:20:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:43,038 INFO L481 AbstractCegarLoop]: Abstraction has 737 states and 1272 transitions. [2020-12-22 06:20:43,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1272 transitions. [2020-12-22 06:20:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:20:43,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:43,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:20:43,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:20:43,045 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:43,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:43,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1348464588, now seen corresponding path program 1 times [2020-12-22 06:20:43,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:43,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992345197] [2020-12-22 06:20:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:43,209 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 06:20:43,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992345197] [2020-12-22 06:20:43,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:43,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:43,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797101183] [2020-12-22 06:20:43,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:43,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:43,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:43,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:43,213 INFO L87 Difference]: Start difference. First operand 737 states and 1272 transitions. Second operand 3 states. [2020-12-22 06:20:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:43,277 INFO L93 Difference]: Finished difference Result 1456 states and 2518 transitions. [2020-12-22 06:20:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:43,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 06:20:43,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:43,283 INFO L225 Difference]: With dead ends: 1456 [2020-12-22 06:20:43,283 INFO L226 Difference]: Without dead ends: 742 [2020-12-22 06:20:43,286 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 06:20:43,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-12-22 06:20:43,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 737. [2020-12-22 06:20:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-12-22 06:20:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1271 transitions. [2020-12-22 06:20:43,330 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1271 transitions. Word has length 51 [2020-12-22 06:20:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:43,340 INFO L481 AbstractCegarLoop]: Abstraction has 737 states and 1271 transitions. [2020-12-22 06:20:43,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1271 transitions. [2020-12-22 06:20:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:20:43,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:43,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:20:43,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:20:43,344 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:43,345 INFO L82 PathProgramCache]: Analyzing trace with hash 786017042, now seen corresponding path program 1 times [2020-12-22 06:20:43,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:43,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731583724] [2020-12-22 06:20:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:43,469 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 06:20:43,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731583724] [2020-12-22 06:20:43,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:43,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:43,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948841489] [2020-12-22 06:20:43,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:43,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:43,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:43,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:43,474 INFO L87 Difference]: Start difference. First operand 737 states and 1271 transitions. Second operand 3 states. [2020-12-22 06:20:43,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:43,536 INFO L93 Difference]: Finished difference Result 1466 states and 2531 transitions. [2020-12-22 06:20:43,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:43,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 06:20:43,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:43,541 INFO L225 Difference]: With dead ends: 1466 [2020-12-22 06:20:43,542 INFO L226 Difference]: Without dead ends: 737 [2020-12-22 06:20:43,544 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 06:20:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-12-22 06:20:43,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2020-12-22 06:20:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-12-22 06:20:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1269 transitions. [2020-12-22 06:20:43,578 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1269 transitions. Word has length 52 [2020-12-22 06:20:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:43,580 INFO L481 AbstractCegarLoop]: Abstraction has 737 states and 1269 transitions. [2020-12-22 06:20:43,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1269 transitions. [2020-12-22 06:20:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:20:43,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:43,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:20:43,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:20:43,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:43,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:43,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1691578983, now seen corresponding path program 1 times [2020-12-22 06:20:43,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:43,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797276393] [2020-12-22 06:20:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:43,704 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 06:20:43,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797276393] [2020-12-22 06:20:43,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:43,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:43,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946139467] [2020-12-22 06:20:43,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:43,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:43,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:43,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:43,708 INFO L87 Difference]: Start difference. First operand 737 states and 1269 transitions. Second operand 5 states. [2020-12-22 06:20:43,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:43,944 INFO L93 Difference]: Finished difference Result 2150 states and 3715 transitions. [2020-12-22 06:20:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:20:43,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-12-22 06:20:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:43,954 INFO L225 Difference]: With dead ends: 2150 [2020-12-22 06:20:43,954 INFO L226 Difference]: Without dead ends: 1440 [2020-12-22 06:20:43,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:20:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2020-12-22 06:20:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 737. [2020-12-22 06:20:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-12-22 06:20:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1268 transitions. [2020-12-22 06:20:44,005 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1268 transitions. Word has length 53 [2020-12-22 06:20:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:44,005 INFO L481 AbstractCegarLoop]: Abstraction has 737 states and 1268 transitions. [2020-12-22 06:20:44,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1268 transitions. [2020-12-22 06:20:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:20:44,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:44,009 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 06:20:44,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:20:44,010 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:44,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:44,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1273441206, now seen corresponding path program 1 times [2020-12-22 06:20:44,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:44,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242849312] [2020-12-22 06:20:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:44,128 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 06:20:44,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242849312] [2020-12-22 06:20:44,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:44,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:44,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162622016] [2020-12-22 06:20:44,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:44,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:44,132 INFO L87 Difference]: Start difference. First operand 737 states and 1268 transitions. Second operand 5 states. [2020-12-22 06:20:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:44,400 INFO L93 Difference]: Finished difference Result 2155 states and 3720 transitions. [2020-12-22 06:20:44,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:20:44,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 06:20:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:44,408 INFO L225 Difference]: With dead ends: 2155 [2020-12-22 06:20:44,409 INFO L226 Difference]: Without dead ends: 1445 [2020-12-22 06:20:44,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 06:20:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-12-22 06:20:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 737. [2020-12-22 06:20:44,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-12-22 06:20:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1267 transitions. [2020-12-22 06:20:44,490 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1267 transitions. Word has length 54 [2020-12-22 06:20:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:44,490 INFO L481 AbstractCegarLoop]: Abstraction has 737 states and 1267 transitions. [2020-12-22 06:20:44,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1267 transitions. [2020-12-22 06:20:44,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:20:44,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:44,492 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 06:20:44,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:20:44,494 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:44,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:44,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2132706146, now seen corresponding path program 1 times [2020-12-22 06:20:44,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:44,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657870871] [2020-12-22 06:20:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:44,584 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 06:20:44,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657870871] [2020-12-22 06:20:44,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:44,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:44,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505050661] [2020-12-22 06:20:44,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:44,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:44,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:44,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:44,588 INFO L87 Difference]: Start difference. First operand 737 states and 1267 transitions. Second operand 3 states. [2020-12-22 06:20:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:44,639 INFO L93 Difference]: Finished difference Result 1193 states and 2028 transitions. [2020-12-22 06:20:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:44,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 06:20:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:44,645 INFO L225 Difference]: With dead ends: 1193 [2020-12-22 06:20:44,645 INFO L226 Difference]: Without dead ends: 740 [2020-12-22 06:20:44,649 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 06:20:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-12-22 06:20:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 739. [2020-12-22 06:20:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 06:20:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1269 transitions. [2020-12-22 06:20:44,709 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1269 transitions. Word has length 55 [2020-12-22 06:20:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:44,711 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 1269 transitions. [2020-12-22 06:20:44,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1269 transitions. [2020-12-22 06:20:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:20:44,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:44,713 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:44,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:20:44,713 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:44,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:44,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1470781008, now seen corresponding path program 1 times [2020-12-22 06:20:44,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:44,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468980809] [2020-12-22 06:20:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:20:44,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468980809] [2020-12-22 06:20:44,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:44,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:44,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103393152] [2020-12-22 06:20:44,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:44,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:44,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:44,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:44,815 INFO L87 Difference]: Start difference. First operand 739 states and 1269 transitions. Second operand 3 states. [2020-12-22 06:20:44,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:44,912 INFO L93 Difference]: Finished difference Result 2103 states and 3631 transitions. [2020-12-22 06:20:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:44,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 06:20:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:44,921 INFO L225 Difference]: With dead ends: 2103 [2020-12-22 06:20:44,922 INFO L226 Difference]: Without dead ends: 1395 [2020-12-22 06:20:44,925 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 06:20:44,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2020-12-22 06:20:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 942. [2020-12-22 06:20:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-12-22 06:20:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1644 transitions. [2020-12-22 06:20:44,996 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1644 transitions. Word has length 63 [2020-12-22 06:20:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:44,997 INFO L481 AbstractCegarLoop]: Abstraction has 942 states and 1644 transitions. [2020-12-22 06:20:44,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:44,997 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1644 transitions. [2020-12-22 06:20:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:20:44,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:44,999 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:44,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:20:45,000 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:45,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1345221167, now seen corresponding path program 1 times [2020-12-22 06:20:45,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:45,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324574062] [2020-12-22 06:20:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:20:45,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324574062] [2020-12-22 06:20:45,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:45,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:45,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347890284] [2020-12-22 06:20:45,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:45,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:45,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:45,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:45,137 INFO L87 Difference]: Start difference. First operand 942 states and 1644 transitions. Second operand 5 states. [2020-12-22 06:20:45,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:45,448 INFO L93 Difference]: Finished difference Result 2756 states and 4838 transitions. [2020-12-22 06:20:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:20:45,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 06:20:45,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:45,460 INFO L225 Difference]: With dead ends: 2756 [2020-12-22 06:20:45,460 INFO L226 Difference]: Without dead ends: 1845 [2020-12-22 06:20:45,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:20:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2020-12-22 06:20:45,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 942. [2020-12-22 06:20:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-12-22 06:20:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1642 transitions. [2020-12-22 06:20:45,552 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1642 transitions. Word has length 64 [2020-12-22 06:20:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:45,553 INFO L481 AbstractCegarLoop]: Abstraction has 942 states and 1642 transitions. [2020-12-22 06:20:45,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1642 transitions. [2020-12-22 06:20:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:20:45,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:45,555 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:45,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:20:45,556 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:45,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:45,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2033691654, now seen corresponding path program 1 times [2020-12-22 06:20:45,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:45,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114081964] [2020-12-22 06:20:45,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:20:45,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114081964] [2020-12-22 06:20:45,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:45,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:45,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053397289] [2020-12-22 06:20:45,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:45,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:45,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:45,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:45,630 INFO L87 Difference]: Start difference. First operand 942 states and 1642 transitions. Second operand 3 states. [2020-12-22 06:20:45,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:45,778 INFO L93 Difference]: Finished difference Result 2754 states and 4830 transitions. [2020-12-22 06:20:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:45,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:20:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:45,789 INFO L225 Difference]: With dead ends: 2754 [2020-12-22 06:20:45,789 INFO L226 Difference]: Without dead ends: 1843 [2020-12-22 06:20:45,792 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 06:20:45,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-12-22 06:20:45,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1390. [2020-12-22 06:20:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-12-22 06:20:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2469 transitions. [2020-12-22 06:20:45,908 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2469 transitions. Word has length 65 [2020-12-22 06:20:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:45,909 INFO L481 AbstractCegarLoop]: Abstraction has 1390 states and 2469 transitions. [2020-12-22 06:20:45,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2469 transitions. [2020-12-22 06:20:45,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:20:45,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:45,916 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:45,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:20:45,917 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:45,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:45,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2078081444, now seen corresponding path program 1 times [2020-12-22 06:20:45,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:45,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594510044] [2020-12-22 06:20:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:20:46,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594510044] [2020-12-22 06:20:46,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932835145] [2020-12-22 06:20:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:20:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:46,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:20:46,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:20:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:20:46,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:20:46,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 06:20:46,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564508394] [2020-12-22 06:20:46,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:46,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:46,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:46,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:46,648 INFO L87 Difference]: Start difference. First operand 1390 states and 2469 transitions. Second operand 5 states. [2020-12-22 06:20:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:46,929 INFO L93 Difference]: Finished difference Result 2558 states and 4461 transitions. [2020-12-22 06:20:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:20:46,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-12-22 06:20:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:46,943 INFO L225 Difference]: With dead ends: 2558 [2020-12-22 06:20:46,943 INFO L226 Difference]: Without dead ends: 2105 [2020-12-22 06:20:46,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2020-12-22 06:20:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 1649. [2020-12-22 06:20:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-12-22 06:20:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2941 transitions. [2020-12-22 06:20:47,115 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2941 transitions. Word has length 65 [2020-12-22 06:20:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:47,115 INFO L481 AbstractCegarLoop]: Abstraction has 1649 states and 2941 transitions. [2020-12-22 06:20:47,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2941 transitions. [2020-12-22 06:20:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:20:47,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:47,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:20:47,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 06:20:47,335 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:47,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:47,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1666015713, now seen corresponding path program 1 times [2020-12-22 06:20:47,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:47,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091258909] [2020-12-22 06:20:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:20:47,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091258909] [2020-12-22 06:20:47,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:47,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:47,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122447757] [2020-12-22 06:20:47,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:47,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:47,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:47,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:47,433 INFO L87 Difference]: Start difference. First operand 1649 states and 2941 transitions. Second operand 3 states. [2020-12-22 06:20:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:47,610 INFO L93 Difference]: Finished difference Result 4538 states and 8115 transitions. [2020-12-22 06:20:47,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:47,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:20:47,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:47,629 INFO L225 Difference]: With dead ends: 4538 [2020-12-22 06:20:47,630 INFO L226 Difference]: Without dead ends: 2990 [2020-12-22 06:20:47,634 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 06:20:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-12-22 06:20:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2537. [2020-12-22 06:20:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2537 states. [2020-12-22 06:20:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 4574 transitions. [2020-12-22 06:20:47,833 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 4574 transitions. Word has length 69 [2020-12-22 06:20:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:47,834 INFO L481 AbstractCegarLoop]: Abstraction has 2537 states and 4574 transitions. [2020-12-22 06:20:47,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 4574 transitions. [2020-12-22 06:20:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:20:47,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:47,839 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 06:20:47,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:20:47,840 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:47,840 INFO L82 PathProgramCache]: Analyzing trace with hash -840368287, now seen corresponding path program 1 times [2020-12-22 06:20:47,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:47,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762545209] [2020-12-22 06:20:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:47,925 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 06:20:47,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762545209] [2020-12-22 06:20:47,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:47,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:47,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801165307] [2020-12-22 06:20:47,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:47,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:47,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:47,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:47,934 INFO L87 Difference]: Start difference. First operand 2537 states and 4574 transitions. Second operand 3 states. [2020-12-22 06:20:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:48,165 INFO L93 Difference]: Finished difference Result 6938 states and 12533 transitions. [2020-12-22 06:20:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:48,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:20:48,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:48,214 INFO L225 Difference]: With dead ends: 6938 [2020-12-22 06:20:48,214 INFO L226 Difference]: Without dead ends: 4536 [2020-12-22 06:20:48,220 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 06:20:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2020-12-22 06:20:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4083. [2020-12-22 06:20:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4083 states. [2020-12-22 06:20:48,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 7415 transitions. [2020-12-22 06:20:48,499 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 7415 transitions. Word has length 70 [2020-12-22 06:20:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:48,499 INFO L481 AbstractCegarLoop]: Abstraction has 4083 states and 7415 transitions. [2020-12-22 06:20:48,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 7415 transitions. [2020-12-22 06:20:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:20:48,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:48,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:20:48,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:20:48,506 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1478882194, now seen corresponding path program 1 times [2020-12-22 06:20:48,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:48,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290600646] [2020-12-22 06:20:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:48,574 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 06:20:48,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290600646] [2020-12-22 06:20:48,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:48,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:48,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634497826] [2020-12-22 06:20:48,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:48,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:48,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:48,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:48,578 INFO L87 Difference]: Start difference. First operand 4083 states and 7415 transitions. Second operand 3 states. [2020-12-22 06:20:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:49,012 INFO L93 Difference]: Finished difference Result 11292 states and 20539 transitions. [2020-12-22 06:20:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:49,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 06:20:49,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:49,037 INFO L225 Difference]: With dead ends: 11292 [2020-12-22 06:20:49,037 INFO L226 Difference]: Without dead ends: 7378 [2020-12-22 06:20:49,045 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 06:20:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2020-12-22 06:20:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 6925. [2020-12-22 06:20:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6925 states. [2020-12-22 06:20:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 12632 transitions. [2020-12-22 06:20:49,504 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 12632 transitions. Word has length 71 [2020-12-22 06:20:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:49,504 INFO L481 AbstractCegarLoop]: Abstraction has 6925 states and 12632 transitions. [2020-12-22 06:20:49,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 12632 transitions. [2020-12-22 06:20:49,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:20:49,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:49,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:20:49,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:20:49,512 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:49,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:49,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1824538610, now seen corresponding path program 1 times [2020-12-22 06:20:49,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:49,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329502248] [2020-12-22 06:20:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:49,583 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 06:20:49,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329502248] [2020-12-22 06:20:49,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:49,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:49,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121429553] [2020-12-22 06:20:49,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:49,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:49,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:49,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:49,586 INFO L87 Difference]: Start difference. First operand 6925 states and 12632 transitions. Second operand 3 states. [2020-12-22 06:20:50,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:50,134 INFO L93 Difference]: Finished difference Result 20276 states and 37032 transitions. [2020-12-22 06:20:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:50,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:20:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:50,178 INFO L225 Difference]: With dead ends: 20276 [2020-12-22 06:20:50,178 INFO L226 Difference]: Without dead ends: 13524 [2020-12-22 06:20:50,192 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 06:20:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13524 states. [2020-12-22 06:20:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13524 to 13071. [2020-12-22 06:20:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13071 states. [2020-12-22 06:20:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13071 states to 13071 states and 23897 transitions. [2020-12-22 06:20:50,906 INFO L78 Accepts]: Start accepts. Automaton has 13071 states and 23897 transitions. Word has length 72 [2020-12-22 06:20:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:50,906 INFO L481 AbstractCegarLoop]: Abstraction has 13071 states and 23897 transitions. [2020-12-22 06:20:50,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:50,906 INFO L276 IsEmpty]: Start isEmpty. Operand 13071 states and 23897 transitions. [2020-12-22 06:20:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:20:50,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:50,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:20:50,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:20:50,917 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:50,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1544735999, now seen corresponding path program 1 times [2020-12-22 06:20:50,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:50,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687787017] [2020-12-22 06:20:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:50,998 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 06:20:50,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687787017] [2020-12-22 06:20:50,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:50,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:51,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007504583] [2020-12-22 06:20:51,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:51,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:51,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:51,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:51,002 INFO L87 Difference]: Start difference. First operand 13071 states and 23897 transitions. Second operand 3 states. [2020-12-22 06:20:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:52,119 INFO L93 Difference]: Finished difference Result 38416 states and 70302 transitions. [2020-12-22 06:20:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:52,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 06:20:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:52,215 INFO L225 Difference]: With dead ends: 38416 [2020-12-22 06:20:52,215 INFO L226 Difference]: Without dead ends: 25526 [2020-12-22 06:20:52,239 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 06:20:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25526 states. [2020-12-22 06:20:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25526 to 25073. [2020-12-22 06:20:53,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25073 states. [2020-12-22 06:20:53,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25073 states to 25073 states and 45882 transitions. [2020-12-22 06:20:53,704 INFO L78 Accepts]: Start accepts. Automaton has 25073 states and 45882 transitions. Word has length 73 [2020-12-22 06:20:53,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:53,705 INFO L481 AbstractCegarLoop]: Abstraction has 25073 states and 45882 transitions. [2020-12-22 06:20:53,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 25073 states and 45882 transitions. [2020-12-22 06:20:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:20:53,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:53,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:20:53,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:20:53,722 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash 216422068, now seen corresponding path program 1 times [2020-12-22 06:20:53,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:53,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000746348] [2020-12-22 06:20:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:20:53,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000746348] [2020-12-22 06:20:53,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:53,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:53,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545080861] [2020-12-22 06:20:53,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:53,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:53,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:53,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:53,803 INFO L87 Difference]: Start difference. First operand 25073 states and 45882 transitions. Second operand 3 states. [2020-12-22 06:20:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:55,165 INFO L93 Difference]: Finished difference Result 69061 states and 125993 transitions. [2020-12-22 06:20:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:55,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 06:20:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:55,276 INFO L225 Difference]: With dead ends: 69061 [2020-12-22 06:20:55,277 INFO L226 Difference]: Without dead ends: 44216 [2020-12-22 06:20:55,311 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 06:20:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44216 states. [2020-12-22 06:20:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44216 to 43763. [2020-12-22 06:20:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43763 states. [2020-12-22 06:20:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43763 states to 43763 states and 79611 transitions. [2020-12-22 06:20:57,394 INFO L78 Accepts]: Start accepts. Automaton has 43763 states and 79611 transitions. Word has length 74 [2020-12-22 06:20:57,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:57,394 INFO L481 AbstractCegarLoop]: Abstraction has 43763 states and 79611 transitions. [2020-12-22 06:20:57,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:57,395 INFO L276 IsEmpty]: Start isEmpty. Operand 43763 states and 79611 transitions. [2020-12-22 06:20:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:20:57,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:57,406 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:57,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:20:57,406 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:20:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:57,407 INFO L82 PathProgramCache]: Analyzing trace with hash 325500872, now seen corresponding path program 1 times [2020-12-22 06:20:57,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:57,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020355906] [2020-12-22 06:20:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 06:20:57,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020355906] [2020-12-22 06:20:57,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:57,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:57,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56262283] [2020-12-22 06:20:57,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:57,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:57,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:57,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:57,488 INFO L87 Difference]: Start difference. First operand 43763 states and 79611 transitions. Second operand 5 states. [2020-12-22 06:21:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:00,806 INFO L93 Difference]: Finished difference Result 128906 states and 234482 transitions. [2020-12-22 06:21:00,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:21:00,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 06:21:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:00,979 INFO L225 Difference]: With dead ends: 128906 [2020-12-22 06:21:00,979 INFO L226 Difference]: Without dead ends: 85439 [2020-12-22 06:21:01,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:21:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85439 states. [2020-12-22 06:21:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85439 to 43763. [2020-12-22 06:21:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43763 states. [2020-12-22 06:21:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43763 states to 43763 states and 79353 transitions. [2020-12-22 06:21:03,530 INFO L78 Accepts]: Start accepts. Automaton has 43763 states and 79353 transitions. Word has length 75 [2020-12-22 06:21:03,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:03,530 INFO L481 AbstractCegarLoop]: Abstraction has 43763 states and 79353 transitions. [2020-12-22 06:21:03,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:03,530 INFO L276 IsEmpty]: Start isEmpty. Operand 43763 states and 79353 transitions. [2020-12-22 06:21:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:21:03,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:03,540 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:03,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:21:03,541 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:03,541 INFO L82 PathProgramCache]: Analyzing trace with hash 369890662, now seen corresponding path program 2 times [2020-12-22 06:21:03,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:03,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870161544] [2020-12-22 06:21:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:03,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870161544] [2020-12-22 06:21:03,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:03,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:03,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474133154] [2020-12-22 06:21:03,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:03,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:03,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:03,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:03,610 INFO L87 Difference]: Start difference. First operand 43763 states and 79353 transitions. Second operand 3 states. [2020-12-22 06:21:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:05,841 INFO L93 Difference]: Finished difference Result 87677 states and 158947 transitions. [2020-12-22 06:21:05,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:05,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 06:21:05,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:05,915 INFO L225 Difference]: With dead ends: 87677 [2020-12-22 06:21:05,915 INFO L226 Difference]: Without dead ends: 44216 [2020-12-22 06:21:05,948 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 06:21:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44216 states. [2020-12-22 06:21:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44216 to 43763. [2020-12-22 06:21:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43763 states. [2020-12-22 06:21:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43763 states to 43763 states and 79225 transitions. [2020-12-22 06:21:07,798 INFO L78 Accepts]: Start accepts. Automaton has 43763 states and 79225 transitions. Word has length 75 [2020-12-22 06:21:07,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:07,799 INFO L481 AbstractCegarLoop]: Abstraction has 43763 states and 79225 transitions. [2020-12-22 06:21:07,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 43763 states and 79225 transitions. [2020-12-22 06:21:07,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:21:07,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:07,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:21:07,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:21:07,811 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash 891145043, now seen corresponding path program 1 times [2020-12-22 06:21:07,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:07,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601666967] [2020-12-22 06:21:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:07,886 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 06:21:07,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601666967] [2020-12-22 06:21:07,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:07,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:07,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608193135] [2020-12-22 06:21:07,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:07,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:07,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:07,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:07,889 INFO L87 Difference]: Start difference. First operand 43763 states and 79225 transitions. Second operand 3 states. [2020-12-22 06:21:10,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:10,894 INFO L93 Difference]: Finished difference Result 122791 states and 222125 transitions. [2020-12-22 06:21:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:10,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 06:21:10,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:11,043 INFO L225 Difference]: With dead ends: 122791 [2020-12-22 06:21:11,043 INFO L226 Difference]: Without dead ends: 79290 [2020-12-22 06:21:11,080 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 06:21:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79290 states. [2020-12-22 06:21:14,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79290 to 78837. [2020-12-22 06:21:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78837 states. [2020-12-22 06:21:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78837 states to 78837 states and 142330 transitions. [2020-12-22 06:21:14,458 INFO L78 Accepts]: Start accepts. Automaton has 78837 states and 142330 transitions. Word has length 75 [2020-12-22 06:21:14,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:14,458 INFO L481 AbstractCegarLoop]: Abstraction has 78837 states and 142330 transitions. [2020-12-22 06:21:14,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:14,458 INFO L276 IsEmpty]: Start isEmpty. Operand 78837 states and 142330 transitions. [2020-12-22 06:21:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:21:14,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:14,469 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:14,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:21:14,470 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:14,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1652153556, now seen corresponding path program 1 times [2020-12-22 06:21:14,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:14,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624479115] [2020-12-22 06:21:14,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 06:21:14,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624479115] [2020-12-22 06:21:14,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658678668] [2020-12-22 06:21:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:21:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:15,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 06:21:15,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:21:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:15,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:21:15,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 06:21:15,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934539366] [2020-12-22 06:21:15,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:21:15,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:15,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:21:15,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:21:15,342 INFO L87 Difference]: Start difference. First operand 78837 states and 142330 transitions. Second operand 8 states. [2020-12-22 06:21:16,019 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-12-22 06:21:18,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:18,763 INFO L93 Difference]: Finished difference Result 83565 states and 150500 transitions. [2020-12-22 06:21:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 06:21:18,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-12-22 06:21:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:18,894 INFO L225 Difference]: With dead ends: 83565 [2020-12-22 06:21:18,895 INFO L226 Difference]: Without dead ends: 83112 [2020-12-22 06:21:18,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-22 06:21:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83112 states. [2020-12-22 06:21:22,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83112 to 81254. [2020-12-22 06:21:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81254 states. [2020-12-22 06:21:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81254 states to 81254 states and 146617 transitions. [2020-12-22 06:21:22,236 INFO L78 Accepts]: Start accepts. Automaton has 81254 states and 146617 transitions. Word has length 76 [2020-12-22 06:21:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:22,236 INFO L481 AbstractCegarLoop]: Abstraction has 81254 states and 146617 transitions. [2020-12-22 06:21:22,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:21:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 81254 states and 146617 transitions. [2020-12-22 06:21:22,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:21:22,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:22,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:22,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:21:22,462 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:22,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:22,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1102867004, now seen corresponding path program 1 times [2020-12-22 06:21:22,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:22,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189286173] [2020-12-22 06:21:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:22,529 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 06:21:22,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189286173] [2020-12-22 06:21:22,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:22,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:22,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874520636] [2020-12-22 06:21:22,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:22,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:22,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:22,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:22,531 INFO L87 Difference]: Start difference. First operand 81254 states and 146617 transitions. Second operand 3 states. [2020-12-22 06:21:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:28,166 INFO L93 Difference]: Finished difference Result 236625 states and 427162 transitions. [2020-12-22 06:21:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:28,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 06:21:28,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:28,518 INFO L225 Difference]: With dead ends: 236625 [2020-12-22 06:21:28,519 INFO L226 Difference]: Without dead ends: 157497 [2020-12-22 06:21:28,595 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 06:21:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157497 states. [2020-12-22 06:21:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157497 to 157044. [2020-12-22 06:21:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157044 states. [2020-12-22 06:21:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157044 states to 157044 states and 283012 transitions. [2020-12-22 06:21:35,387 INFO L78 Accepts]: Start accepts. Automaton has 157044 states and 283012 transitions. Word has length 79 [2020-12-22 06:21:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:35,388 INFO L481 AbstractCegarLoop]: Abstraction has 157044 states and 283012 transitions. [2020-12-22 06:21:35,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 157044 states and 283012 transitions. [2020-12-22 06:21:35,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:21:35,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:35,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:21:35,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:21:35,403 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:35,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:35,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1790088799, now seen corresponding path program 1 times [2020-12-22 06:21:35,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:35,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138608292] [2020-12-22 06:21:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:35,469 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 06:21:35,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138608292] [2020-12-22 06:21:35,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:35,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:35,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708494418] [2020-12-22 06:21:35,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:35,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:35,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:35,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:35,471 INFO L87 Difference]: Start difference. First operand 157044 states and 283012 transitions. Second operand 3 states. [2020-12-22 06:21:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:43,803 INFO L93 Difference]: Finished difference Result 280042 states and 503550 transitions. [2020-12-22 06:21:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:43,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:21:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:44,667 INFO L225 Difference]: With dead ends: 280042 [2020-12-22 06:21:44,667 INFO L226 Difference]: Without dead ends: 279589 [2020-12-22 06:21:44,773 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 06:21:44,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279589 states. [2020-12-22 06:21:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279589 to 279136. [2020-12-22 06:21:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279136 states. [2020-12-22 06:21:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279136 states to 279136 states and 501012 transitions. [2020-12-22 06:21:56,685 INFO L78 Accepts]: Start accepts. Automaton has 279136 states and 501012 transitions. Word has length 80 [2020-12-22 06:21:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:56,685 INFO L481 AbstractCegarLoop]: Abstraction has 279136 states and 501012 transitions. [2020-12-22 06:21:56,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:56,699 INFO L276 IsEmpty]: Start isEmpty. Operand 279136 states and 501012 transitions. [2020-12-22 06:21:56,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:21:56,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:56,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:21:56,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:21:56,737 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:56,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1104164074, now seen corresponding path program 1 times [2020-12-22 06:21:56,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:56,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146544576] [2020-12-22 06:21:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:56,952 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 06:21:56,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146544576] [2020-12-22 06:21:56,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:56,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 06:21:56,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706932632] [2020-12-22 06:21:56,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 06:21:56,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:56,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 06:21:56,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:21:56,954 INFO L87 Difference]: Start difference. First operand 279136 states and 501012 transitions. Second operand 11 states. [2020-12-22 06:21:58,059 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-22 06:22:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:07,962 INFO L93 Difference]: Finished difference Result 282499 states and 506591 transitions. [2020-12-22 06:22:07,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 06:22:07,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2020-12-22 06:22:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:08,576 INFO L225 Difference]: With dead ends: 282499 [2020-12-22 06:22:08,576 INFO L226 Difference]: Without dead ends: 282180 [2020-12-22 06:22:08,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=466, Invalid=1340, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 06:22:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282180 states. [2020-12-22 06:22:21,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282180 to 279703. [2020-12-22 06:22:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279703 states. [2020-12-22 06:22:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279703 states to 279703 states and 501959 transitions. [2020-12-22 06:22:23,006 INFO L78 Accepts]: Start accepts. Automaton has 279703 states and 501959 transitions. Word has length 81 [2020-12-22 06:22:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:23,007 INFO L481 AbstractCegarLoop]: Abstraction has 279703 states and 501959 transitions. [2020-12-22 06:22:23,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 06:22:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 279703 states and 501959 transitions. [2020-12-22 06:22:23,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:22:23,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:23,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:23,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:22:23,053 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:23,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1645164431, now seen corresponding path program 1 times [2020-12-22 06:22:23,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:23,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751867571] [2020-12-22 06:22:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:23,256 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 06:22:23,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751867571] [2020-12-22 06:22:23,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:23,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:22:23,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103482395] [2020-12-22 06:22:23,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:23,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:23,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:23,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:23,262 INFO L87 Difference]: Start difference. First operand 279703 states and 501959 transitions. Second operand 5 states. [2020-12-22 06:22:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:38,214 INFO L93 Difference]: Finished difference Result 419773 states and 752716 transitions. [2020-12-22 06:22:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:22:38,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 06:22:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:39,472 INFO L225 Difference]: With dead ends: 419773 [2020-12-22 06:22:39,472 INFO L226 Difference]: Without dead ends: 419037 [2020-12-22 06:22:39,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:22:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419037 states. [2020-12-22 06:22:57,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419037 to 417191. [2020-12-22 06:22:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417191 states.