/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_spec27_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:27:37,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:27:37,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:27:37,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:27:37,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:27:37,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:27:37,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:27:37,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:27:37,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:27:37,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:27:37,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:27:37,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:27:37,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:27:37,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:27:37,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:27:37,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:27:37,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:27:37,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:27:37,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:27:37,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:27:37,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:27:37,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:27:37,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:27:37,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:27:37,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:27:37,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:27:37,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:27:37,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:27:37,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:27:37,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:27:37,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:27:37,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:27:37,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:27:37,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:27:37,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:27:37,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:27:37,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:27:37,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:27:37,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:27:37,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:27:37,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:27:37,627 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:27:37,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:27:37,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:27:37,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:27:37,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:27:37,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:27:37,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:27:37,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:27:37,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:27:37,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:27:37,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:27:37,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:27:37,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:27:37,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:27:37,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:27:37,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:27:37,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:27:37,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:27:37,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:27:37,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:27:37,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:27:37,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:27:38,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:27:38,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:27:38,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:27:38,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:27:38,059 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:27:38,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product23.cil.c [2020-12-22 06:27:38,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45ad820f/24ed4f51d59c421496883f9ed47bdf28/FLAG5e0e17c23 [2020-12-22 06:27:38,900 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:27:38,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product23.cil.c [2020-12-22 06:27:38,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45ad820f/24ed4f51d59c421496883f9ed47bdf28/FLAG5e0e17c23 [2020-12-22 06:27:39,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45ad820f/24ed4f51d59c421496883f9ed47bdf28 [2020-12-22 06:27:39,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:27:39,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:27:39,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:27:39,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:27:39,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:27:39,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:27:39" (1/1) ... [2020-12-22 06:27:39,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef04c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:39, skipping insertion in model container [2020-12-22 06:27:39,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:27:39" (1/1) ... [2020-12-22 06:27:39,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:27:39,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:27:39,915 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_spec27_product23.cil.c[46407,46420] [2020-12-22 06:27:40,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:27:40,023 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:27:40,122 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_spec27_product23.cil.c[46407,46420] [2020-12-22 06:27:40,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:27:40,250 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:27:40,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40 WrapperNode [2020-12-22 06:27:40,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:27:40,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:27:40,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:27:40,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:27:40,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (1/1) ... [2020-12-22 06:27:40,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (1/1) ... [2020-12-22 06:27:40,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:27:40,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:27:40,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:27:40,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:27:40,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (1/1) ... [2020-12-22 06:27:40,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (1/1) ... [2020-12-22 06:27:40,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (1/1) ... [2020-12-22 06:27:40,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (1/1) ... [2020-12-22 06:27:40,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (1/1) ... [2020-12-22 06:27:40,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (1/1) ... [2020-12-22 06:27:40,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (1/1) ... [2020-12-22 06:27:40,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:27:40,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:27:40,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:27:40,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:27:40,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (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 06:27:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-12-22 06:27:40,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:27:40,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:27:40,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:27:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:27:44,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:27:44,616 INFO L299 CfgBuilder]: Removed 525 assume(true) statements. [2020-12-22 06:27:44,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:27:44 BoogieIcfgContainer [2020-12-22 06:27:44,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:27:44,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:27:44,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:27:44,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:27:44,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:27:39" (1/3) ... [2020-12-22 06:27:44,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55893de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:27:44, skipping insertion in model container [2020-12-22 06:27:44,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:27:40" (2/3) ... [2020-12-22 06:27:44,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55893de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:27:44, skipping insertion in model container [2020-12-22 06:27:44,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:27:44" (3/3) ... [2020-12-22 06:27:44,629 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product23.cil.c [2020-12-22 06:27:44,636 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:27:44,642 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 06:27:44,661 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 06:27:44,696 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:27:44,696 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:27:44,697 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:27:44,697 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:27:44,697 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:27:44,697 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:27:44,697 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:27:44,698 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:27:44,738 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states. [2020-12-22 06:27:44,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:27:44,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:44,756 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 06:27:44,757 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 06:27:44,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:44,764 INFO L82 PathProgramCache]: Analyzing trace with hash 113080012, now seen corresponding path program 1 times [2020-12-22 06:27:44,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:44,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49550385] [2020-12-22 06:27:44,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:45,185 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 06:27:45,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49550385] [2020-12-22 06:27:45,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:45,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:45,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766321544] [2020-12-22 06:27:45,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:45,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:45,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:45,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:45,216 INFO L87 Difference]: Start difference. First operand 852 states. Second operand 3 states. [2020-12-22 06:27:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:45,432 INFO L93 Difference]: Finished difference Result 2521 states and 4430 transitions. [2020-12-22 06:27:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:45,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 06:27:45,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:45,484 INFO L225 Difference]: With dead ends: 2521 [2020-12-22 06:27:45,484 INFO L226 Difference]: Without dead ends: 1624 [2020-12-22 06:27:45,498 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 06:27:45,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-12-22 06:27:45,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 821. [2020-12-22 06:27:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-12-22 06:27:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1433 transitions. [2020-12-22 06:27:45,624 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1433 transitions. Word has length 51 [2020-12-22 06:27:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:45,625 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1433 transitions. [2020-12-22 06:27:45,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1433 transitions. [2020-12-22 06:27:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:27:45,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:45,630 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 06:27:45,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:27:45,631 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 06:27:45,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1245073710, now seen corresponding path program 1 times [2020-12-22 06:27:45,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:45,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948152690] [2020-12-22 06:27:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:45,861 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 06:27:45,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948152690] [2020-12-22 06:27:45,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:45,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:27:45,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535937198] [2020-12-22 06:27:45,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:27:45,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:45,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:27:45,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:27:45,867 INFO L87 Difference]: Start difference. First operand 821 states and 1433 transitions. Second operand 5 states. [2020-12-22 06:27:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:46,202 INFO L93 Difference]: Finished difference Result 2412 states and 4215 transitions. [2020-12-22 06:27:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:27:46,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-12-22 06:27:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:46,217 INFO L225 Difference]: With dead ends: 2412 [2020-12-22 06:27:46,217 INFO L226 Difference]: Without dead ends: 1610 [2020-12-22 06:27:46,220 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 06:27:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2020-12-22 06:27:46,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 821. [2020-12-22 06:27:46,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-12-22 06:27:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1432 transitions. [2020-12-22 06:27:46,279 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1432 transitions. Word has length 53 [2020-12-22 06:27:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:46,279 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1432 transitions. [2020-12-22 06:27:46,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:27:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1432 transitions. [2020-12-22 06:27:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:27:46,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:46,288 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 06:27:46,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:27:46,289 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 06:27:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:46,291 INFO L82 PathProgramCache]: Analyzing trace with hash -125604863, now seen corresponding path program 1 times [2020-12-22 06:27:46,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:46,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934419546] [2020-12-22 06:27:46,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:46,448 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 06:27:46,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934419546] [2020-12-22 06:27:46,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:46,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:46,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065507811] [2020-12-22 06:27:46,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:46,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:46,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:46,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:46,455 INFO L87 Difference]: Start difference. First operand 821 states and 1432 transitions. Second operand 3 states. [2020-12-22 06:27:46,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:46,536 INFO L93 Difference]: Finished difference Result 1624 states and 2838 transitions. [2020-12-22 06:27:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:46,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 06:27:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:46,542 INFO L225 Difference]: With dead ends: 1624 [2020-12-22 06:27:46,542 INFO L226 Difference]: Without dead ends: 826 [2020-12-22 06:27:46,544 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 06:27:46,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-12-22 06:27:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 821. [2020-12-22 06:27:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-12-22 06:27:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1431 transitions. [2020-12-22 06:27:46,593 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1431 transitions. Word has length 54 [2020-12-22 06:27:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:46,600 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1431 transitions. [2020-12-22 06:27:46,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1431 transitions. [2020-12-22 06:27:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:27:46,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:46,602 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 06:27:46,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:27:46,602 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 06:27:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:46,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1333026053, now seen corresponding path program 1 times [2020-12-22 06:27:46,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:46,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510458854] [2020-12-22 06:27:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:46,709 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 06:27:46,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510458854] [2020-12-22 06:27:46,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:46,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:46,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330955878] [2020-12-22 06:27:46,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:46,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:46,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:46,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:46,715 INFO L87 Difference]: Start difference. First operand 821 states and 1431 transitions. Second operand 3 states. [2020-12-22 06:27:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:46,787 INFO L93 Difference]: Finished difference Result 1634 states and 2851 transitions. [2020-12-22 06:27:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:46,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 06:27:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:46,794 INFO L225 Difference]: With dead ends: 1634 [2020-12-22 06:27:46,794 INFO L226 Difference]: Without dead ends: 821 [2020-12-22 06:27:46,796 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 06:27:46,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-12-22 06:27:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2020-12-22 06:27:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-12-22 06:27:46,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1429 transitions. [2020-12-22 06:27:46,832 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1429 transitions. Word has length 55 [2020-12-22 06:27:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:46,834 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1429 transitions. [2020-12-22 06:27:46,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1429 transitions. [2020-12-22 06:27:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:27:46,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:46,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:27:46,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:27:46,838 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 06:27:46,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:46,838 INFO L82 PathProgramCache]: Analyzing trace with hash -426827898, now seen corresponding path program 1 times [2020-12-22 06:27:46,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:46,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616247229] [2020-12-22 06:27:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:46,971 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 06:27:46,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616247229] [2020-12-22 06:27:46,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:46,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:27:46,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606339259] [2020-12-22 06:27:46,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:27:46,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:46,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:27:46,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:27:46,976 INFO L87 Difference]: Start difference. First operand 821 states and 1429 transitions. Second operand 5 states. [2020-12-22 06:27:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:47,284 INFO L93 Difference]: Finished difference Result 2402 states and 4195 transitions. [2020-12-22 06:27:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:27:47,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-22 06:27:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:47,294 INFO L225 Difference]: With dead ends: 2402 [2020-12-22 06:27:47,294 INFO L226 Difference]: Without dead ends: 1608 [2020-12-22 06:27:47,296 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 06:27:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-12-22 06:27:47,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 821. [2020-12-22 06:27:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-12-22 06:27:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1428 transitions. [2020-12-22 06:27:47,345 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1428 transitions. Word has length 56 [2020-12-22 06:27:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:47,345 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1428 transitions. [2020-12-22 06:27:47,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:27:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1428 transitions. [2020-12-22 06:27:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:27:47,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:47,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:27:47,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:27:47,347 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 06:27:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:47,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1045868861, now seen corresponding path program 1 times [2020-12-22 06:27:47,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:47,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351129580] [2020-12-22 06:27:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:47,453 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 06:27:47,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351129580] [2020-12-22 06:27:47,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:47,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:27:47,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039686293] [2020-12-22 06:27:47,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:27:47,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:47,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:27:47,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:27:47,456 INFO L87 Difference]: Start difference. First operand 821 states and 1428 transitions. Second operand 5 states. [2020-12-22 06:27:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:47,730 INFO L93 Difference]: Finished difference Result 2407 states and 4200 transitions. [2020-12-22 06:27:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:27:47,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-12-22 06:27:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:47,740 INFO L225 Difference]: With dead ends: 2407 [2020-12-22 06:27:47,740 INFO L226 Difference]: Without dead ends: 1613 [2020-12-22 06:27:47,742 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 06:27:47,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-12-22 06:27:47,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 821. [2020-12-22 06:27:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-12-22 06:27:47,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1427 transitions. [2020-12-22 06:27:47,798 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1427 transitions. Word has length 57 [2020-12-22 06:27:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:47,798 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1427 transitions. [2020-12-22 06:27:47,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:27:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1427 transitions. [2020-12-22 06:27:47,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:27:47,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:47,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:27:47,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:27:47,800 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 06:27:47,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:47,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1407440725, now seen corresponding path program 1 times [2020-12-22 06:27:47,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:47,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453428985] [2020-12-22 06:27:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:47,863 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 06:27:47,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453428985] [2020-12-22 06:27:47,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:47,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:47,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552066409] [2020-12-22 06:27:47,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:47,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:47,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:47,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:47,866 INFO L87 Difference]: Start difference. First operand 821 states and 1427 transitions. Second operand 3 states. [2020-12-22 06:27:47,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:47,923 INFO L93 Difference]: Finished difference Result 1361 states and 2348 transitions. [2020-12-22 06:27:47,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:47,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 06:27:47,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:47,929 INFO L225 Difference]: With dead ends: 1361 [2020-12-22 06:27:47,929 INFO L226 Difference]: Without dead ends: 824 [2020-12-22 06:27:47,930 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 06:27:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-12-22 06:27:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 823. [2020-12-22 06:27:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-12-22 06:27:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1429 transitions. [2020-12-22 06:27:47,977 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1429 transitions. Word has length 58 [2020-12-22 06:27:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:47,977 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1429 transitions. [2020-12-22 06:27:47,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1429 transitions. [2020-12-22 06:27:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:27:47,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:47,979 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, 1] [2020-12-22 06:27:47,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:27:47,979 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 06:27:47,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:47,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1670596349, now seen corresponding path program 1 times [2020-12-22 06:27:47,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:47,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280644654] [2020-12-22 06:27:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:48,065 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 06:27:48,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280644654] [2020-12-22 06:27:48,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:48,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:48,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883524317] [2020-12-22 06:27:48,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:48,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:48,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:48,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:48,068 INFO L87 Difference]: Start difference. First operand 823 states and 1429 transitions. Second operand 3 states. [2020-12-22 06:27:48,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:48,163 INFO L93 Difference]: Finished difference Result 2355 states and 4111 transitions. [2020-12-22 06:27:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:48,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:27:48,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:48,173 INFO L225 Difference]: With dead ends: 2355 [2020-12-22 06:27:48,173 INFO L226 Difference]: Without dead ends: 1563 [2020-12-22 06:27:48,175 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 06:27:48,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2020-12-22 06:27:48,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1026. [2020-12-22 06:27:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2020-12-22 06:27:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1804 transitions. [2020-12-22 06:27:48,241 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1804 transitions. Word has length 66 [2020-12-22 06:27:48,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:48,242 INFO L481 AbstractCegarLoop]: Abstraction has 1026 states and 1804 transitions. [2020-12-22 06:27:48,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1804 transitions. [2020-12-22 06:27:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:27:48,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:48,244 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, 1, 1] [2020-12-22 06:27:48,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:27:48,244 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 06:27:48,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:48,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2033887934, now seen corresponding path program 1 times [2020-12-22 06:27:48,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:48,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035262638] [2020-12-22 06:27:48,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:48,349 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 06:27:48,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035262638] [2020-12-22 06:27:48,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:48,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:27:48,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361401812] [2020-12-22 06:27:48,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:27:48,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:48,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:27:48,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:27:48,358 INFO L87 Difference]: Start difference. First operand 1026 states and 1804 transitions. Second operand 5 states. [2020-12-22 06:27:48,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:48,708 INFO L93 Difference]: Finished difference Result 3008 states and 5318 transitions. [2020-12-22 06:27:48,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:27:48,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 06:27:48,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:48,720 INFO L225 Difference]: With dead ends: 3008 [2020-12-22 06:27:48,721 INFO L226 Difference]: Without dead ends: 2013 [2020-12-22 06:27:48,723 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 06:27:48,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-12-22 06:27:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1026. [2020-12-22 06:27:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2020-12-22 06:27:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1802 transitions. [2020-12-22 06:27:48,832 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1802 transitions. Word has length 67 [2020-12-22 06:27:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:48,833 INFO L481 AbstractCegarLoop]: Abstraction has 1026 states and 1802 transitions. [2020-12-22 06:27:48,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:27:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1802 transitions. [2020-12-22 06:27:48,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:27:48,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:48,841 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, 1, 1, 1] [2020-12-22 06:27:48,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:27:48,842 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 06:27:48,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:48,842 INFO L82 PathProgramCache]: Analyzing trace with hash -505639545, now seen corresponding path program 1 times [2020-12-22 06:27:48,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:48,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856314691] [2020-12-22 06:27:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:48,922 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 06:27:48,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856314691] [2020-12-22 06:27:48,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:48,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:48,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738991385] [2020-12-22 06:27:48,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:48,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:48,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:48,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:48,925 INFO L87 Difference]: Start difference. First operand 1026 states and 1802 transitions. Second operand 3 states. [2020-12-22 06:27:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:49,076 INFO L93 Difference]: Finished difference Result 3006 states and 5310 transitions. [2020-12-22 06:27:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:49,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:27:49,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:49,090 INFO L225 Difference]: With dead ends: 3006 [2020-12-22 06:27:49,090 INFO L226 Difference]: Without dead ends: 2011 [2020-12-22 06:27:49,093 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 06:27:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2020-12-22 06:27:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1474. [2020-12-22 06:27:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-12-22 06:27:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2629 transitions. [2020-12-22 06:27:49,193 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2629 transitions. Word has length 68 [2020-12-22 06:27:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:49,193 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2629 transitions. [2020-12-22 06:27:49,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2629 transitions. [2020-12-22 06:27:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:27:49,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:49,196 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, 1, 1, 1] [2020-12-22 06:27:49,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:27:49,197 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 06:27:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash -939332823, now seen corresponding path program 1 times [2020-12-22 06:27:49,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:49,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30526473] [2020-12-22 06:27:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:49,271 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 06:27:49,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30526473] [2020-12-22 06:27:49,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197035472] [2020-12-22 06:27:49,272 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 06:27:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:49,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:27:49,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:27:50,111 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 06:27:50,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:27:50,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 06:27:50,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331701452] [2020-12-22 06:27:50,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:27:50,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:50,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:27:50,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:27:50,118 INFO L87 Difference]: Start difference. First operand 1474 states and 2629 transitions. Second operand 5 states. [2020-12-22 06:27:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:50,326 INFO L93 Difference]: Finished difference Result 2810 states and 4941 transitions. [2020-12-22 06:27:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:27:50,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:27:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:50,341 INFO L225 Difference]: With dead ends: 2810 [2020-12-22 06:27:50,341 INFO L226 Difference]: Without dead ends: 2273 [2020-12-22 06:27:50,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 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 06:27:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-12-22 06:27:50,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 1733. [2020-12-22 06:27:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-12-22 06:27:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 3101 transitions. [2020-12-22 06:27:50,460 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 3101 transitions. Word has length 68 [2020-12-22 06:27:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:50,461 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 3101 transitions. [2020-12-22 06:27:50,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:27:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 3101 transitions. [2020-12-22 06:27:50,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:27:50,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:50,464 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 06:27:50,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 06:27:50,680 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 06:27:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:50,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1772993076, now seen corresponding path program 1 times [2020-12-22 06:27:50,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:50,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531496799] [2020-12-22 06:27:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:50,759 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 06:27:50,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531496799] [2020-12-22 06:27:50,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:50,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:50,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62432500] [2020-12-22 06:27:50,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:50,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:50,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:50,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:50,762 INFO L87 Difference]: Start difference. First operand 1733 states and 3101 transitions. Second operand 3 states. [2020-12-22 06:27:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:50,991 INFO L93 Difference]: Finished difference Result 4790 states and 8595 transitions. [2020-12-22 06:27:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:50,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:27:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:51,009 INFO L225 Difference]: With dead ends: 4790 [2020-12-22 06:27:51,009 INFO L226 Difference]: Without dead ends: 3158 [2020-12-22 06:27:51,011 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 06:27:51,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2020-12-22 06:27:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2621. [2020-12-22 06:27:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2621 states. [2020-12-22 06:27:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 4734 transitions. [2020-12-22 06:27:51,173 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 4734 transitions. Word has length 72 [2020-12-22 06:27:51,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:51,174 INFO L481 AbstractCegarLoop]: Abstraction has 2621 states and 4734 transitions. [2020-12-22 06:27:51,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:51,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 4734 transitions. [2020-12-22 06:27:51,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:27:51,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:51,179 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 06:27:51,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:27:51,180 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 06:27:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:51,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1452296116, now seen corresponding path program 1 times [2020-12-22 06:27:51,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:51,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155351305] [2020-12-22 06:27:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:51,280 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 06:27:51,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155351305] [2020-12-22 06:27:51,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:51,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:51,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780634961] [2020-12-22 06:27:51,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:51,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:51,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:51,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:51,289 INFO L87 Difference]: Start difference. First operand 2621 states and 4734 transitions. Second operand 3 states. [2020-12-22 06:27:51,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:51,538 INFO L93 Difference]: Finished difference Result 7190 states and 13013 transitions. [2020-12-22 06:27:51,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:51,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 06:27:51,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:51,565 INFO L225 Difference]: With dead ends: 7190 [2020-12-22 06:27:51,565 INFO L226 Difference]: Without dead ends: 4704 [2020-12-22 06:27:51,571 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 06:27:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4704 states. [2020-12-22 06:27:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4704 to 4167. [2020-12-22 06:27:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4167 states. [2020-12-22 06:27:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 7575 transitions. [2020-12-22 06:27:51,836 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 7575 transitions. Word has length 73 [2020-12-22 06:27:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:51,837 INFO L481 AbstractCegarLoop]: Abstraction has 4167 states and 7575 transitions. [2020-12-22 06:27:51,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:51,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 7575 transitions. [2020-12-22 06:27:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:27:51,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:51,844 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 06:27:51,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:27:51,844 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 06:27:51,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:51,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1800107397, now seen corresponding path program 1 times [2020-12-22 06:27:51,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:51,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473558969] [2020-12-22 06:27:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:51,910 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 06:27:51,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473558969] [2020-12-22 06:27:51,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:51,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:51,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090168903] [2020-12-22 06:27:51,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:51,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:51,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:51,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:51,913 INFO L87 Difference]: Start difference. First operand 4167 states and 7575 transitions. Second operand 3 states. [2020-12-22 06:27:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:52,328 INFO L93 Difference]: Finished difference Result 11544 states and 21019 transitions. [2020-12-22 06:27:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:52,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 06:27:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:52,351 INFO L225 Difference]: With dead ends: 11544 [2020-12-22 06:27:52,351 INFO L226 Difference]: Without dead ends: 7546 [2020-12-22 06:27:52,358 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 06:27:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7546 states. [2020-12-22 06:27:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7546 to 7009. [2020-12-22 06:27:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7009 states. [2020-12-22 06:27:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 12792 transitions. [2020-12-22 06:27:52,754 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 12792 transitions. Word has length 74 [2020-12-22 06:27:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:52,754 INFO L481 AbstractCegarLoop]: Abstraction has 7009 states and 12792 transitions. [2020-12-22 06:27:52,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 12792 transitions. [2020-12-22 06:27:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:27:52,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:52,762 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 06:27:52,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:27:52,763 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 06:27:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:52,763 INFO L82 PathProgramCache]: Analyzing trace with hash 613573147, now seen corresponding path program 1 times [2020-12-22 06:27:52,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:52,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174383738] [2020-12-22 06:27:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:52,834 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 06:27:52,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174383738] [2020-12-22 06:27:52,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:52,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:52,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469630784] [2020-12-22 06:27:52,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:52,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:52,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:52,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:52,837 INFO L87 Difference]: Start difference. First operand 7009 states and 12792 transitions. Second operand 3 states. [2020-12-22 06:27:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:53,459 INFO L93 Difference]: Finished difference Result 20528 states and 37512 transitions. [2020-12-22 06:27:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:53,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 06:27:53,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:53,500 INFO L225 Difference]: With dead ends: 20528 [2020-12-22 06:27:53,500 INFO L226 Difference]: Without dead ends: 13692 [2020-12-22 06:27:53,515 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 06:27:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13692 states. [2020-12-22 06:27:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13692 to 13155. [2020-12-22 06:27:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13155 states. [2020-12-22 06:27:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13155 states to 13155 states and 24057 transitions. [2020-12-22 06:27:54,210 INFO L78 Accepts]: Start accepts. Automaton has 13155 states and 24057 transitions. Word has length 75 [2020-12-22 06:27:54,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:54,211 INFO L481 AbstractCegarLoop]: Abstraction has 13155 states and 24057 transitions. [2020-12-22 06:27:54,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 13155 states and 24057 transitions. [2020-12-22 06:27:54,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:27:54,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:54,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:27:54,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:27:54,223 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 06:27:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:54,224 INFO L82 PathProgramCache]: Analyzing trace with hash -60596052, now seen corresponding path program 1 times [2020-12-22 06:27:54,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:54,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641055352] [2020-12-22 06:27:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:54,298 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 06:27:54,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641055352] [2020-12-22 06:27:54,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:54,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:54,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56679028] [2020-12-22 06:27:54,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:54,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:54,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:54,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:54,301 INFO L87 Difference]: Start difference. First operand 13155 states and 24057 transitions. Second operand 3 states. [2020-12-22 06:27:55,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:55,421 INFO L93 Difference]: Finished difference Result 38668 states and 70782 transitions. [2020-12-22 06:27:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:55,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 06:27:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:55,503 INFO L225 Difference]: With dead ends: 38668 [2020-12-22 06:27:55,503 INFO L226 Difference]: Without dead ends: 25694 [2020-12-22 06:27:55,529 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 06:27:55,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25694 states. [2020-12-22 06:27:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25694 to 25157. [2020-12-22 06:27:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25157 states. [2020-12-22 06:27:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25157 states to 25157 states and 46042 transitions. [2020-12-22 06:27:56,757 INFO L78 Accepts]: Start accepts. Automaton has 25157 states and 46042 transitions. Word has length 76 [2020-12-22 06:27:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:27:56,757 INFO L481 AbstractCegarLoop]: Abstraction has 25157 states and 46042 transitions. [2020-12-22 06:27:56,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:27:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand 25157 states and 46042 transitions. [2020-12-22 06:27:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 06:27:56,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:27:56,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:27:56,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:27:56,772 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 06:27:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:27:56,773 INFO L82 PathProgramCache]: Analyzing trace with hash -721109991, now seen corresponding path program 1 times [2020-12-22 06:27:56,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:27:56,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628895531] [2020-12-22 06:27:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:27:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:27:56,842 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 06:27:56,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628895531] [2020-12-22 06:27:56,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:27:56,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:27:56,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554541344] [2020-12-22 06:27:56,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:27:56,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:27:56,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:27:56,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:27:56,845 INFO L87 Difference]: Start difference. First operand 25157 states and 46042 transitions. Second operand 3 states. [2020-12-22 06:27:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:27:58,217 INFO L93 Difference]: Finished difference Result 69313 states and 126473 transitions. [2020-12-22 06:27:58,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:27:58,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 06:27:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:27:58,351 INFO L225 Difference]: With dead ends: 69313 [2020-12-22 06:27:58,352 INFO L226 Difference]: Without dead ends: 44384 [2020-12-22 06:27:58,389 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 06:27:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44384 states. [2020-12-22 06:28:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44384 to 43847. [2020-12-22 06:28:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43847 states. [2020-12-22 06:28:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43847 states to 43847 states and 79771 transitions. [2020-12-22 06:28:00,478 INFO L78 Accepts]: Start accepts. Automaton has 43847 states and 79771 transitions. Word has length 77 [2020-12-22 06:28:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:28:00,479 INFO L481 AbstractCegarLoop]: Abstraction has 43847 states and 79771 transitions. [2020-12-22 06:28:00,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:28:00,479 INFO L276 IsEmpty]: Start isEmpty. Operand 43847 states and 79771 transitions. [2020-12-22 06:28:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:28:00,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:28:00,495 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, 1, 1] [2020-12-22 06:28:00,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:28:00,495 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 06:28:00,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:28:00,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1850264197, now seen corresponding path program 1 times [2020-12-22 06:28:00,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:28:00,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345844710] [2020-12-22 06:28:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:28:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:28:00,580 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 06:28:00,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345844710] [2020-12-22 06:28:00,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:28:00,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:28:00,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864451235] [2020-12-22 06:28:00,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:28:00,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:28:00,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:28:00,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:28:00,582 INFO L87 Difference]: Start difference. First operand 43847 states and 79771 transitions. Second operand 5 states. [2020-12-22 06:28:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:28:03,569 INFO L93 Difference]: Finished difference Result 129158 states and 234962 transitions. [2020-12-22 06:28:03,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:28:03,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-22 06:28:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:28:03,969 INFO L225 Difference]: With dead ends: 129158 [2020-12-22 06:28:03,969 INFO L226 Difference]: Without dead ends: 85607 [2020-12-22 06:28:04,048 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 06:28:04,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85607 states. [2020-12-22 06:28:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85607 to 43847. [2020-12-22 06:28:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43847 states. [2020-12-22 06:28:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43847 states to 43847 states and 79513 transitions. [2020-12-22 06:28:06,303 INFO L78 Accepts]: Start accepts. Automaton has 43847 states and 79513 transitions. Word has length 78 [2020-12-22 06:28:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:28:06,303 INFO L481 AbstractCegarLoop]: Abstraction has 43847 states and 79513 transitions. [2020-12-22 06:28:06,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:28:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 43847 states and 79513 transitions. [2020-12-22 06:28:06,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:28:06,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:28:06,316 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, 1, 1, 1] [2020-12-22 06:28:06,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:28:06,317 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 06:28:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:28:06,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1416570919, now seen corresponding path program 2 times [2020-12-22 06:28:06,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:28:06,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387390723] [2020-12-22 06:28:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:28:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:28:06,383 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 06:28:06,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387390723] [2020-12-22 06:28:06,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:28:06,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:28:06,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222114365] [2020-12-22 06:28:06,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:28:06,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:28:06,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:28:06,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:28:06,386 INFO L87 Difference]: Start difference. First operand 43847 states and 79513 transitions. Second operand 3 states. [2020-12-22 06:28:08,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:28:08,303 INFO L93 Difference]: Finished difference Result 87929 states and 159427 transitions. [2020-12-22 06:28:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:28:08,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 06:28:08,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:28:08,403 INFO L225 Difference]: With dead ends: 87929 [2020-12-22 06:28:08,403 INFO L226 Difference]: Without dead ends: 44384 [2020-12-22 06:28:08,455 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 06:28:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44384 states. [2020-12-22 06:28:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44384 to 43847. [2020-12-22 06:28:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43847 states. [2020-12-22 06:28:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43847 states to 43847 states and 79385 transitions. [2020-12-22 06:28:10,134 INFO L78 Accepts]: Start accepts. Automaton has 43847 states and 79385 transitions. Word has length 78 [2020-12-22 06:28:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:28:10,134 INFO L481 AbstractCegarLoop]: Abstraction has 43847 states and 79385 transitions. [2020-12-22 06:28:10,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:28:10,134 INFO L276 IsEmpty]: Start isEmpty. Operand 43847 states and 79385 transitions. [2020-12-22 06:28:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:28:10,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:28:10,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:28:10,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:28:10,147 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 06:28:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:28:10,148 INFO L82 PathProgramCache]: Analyzing trace with hash -495907046, now seen corresponding path program 1 times [2020-12-22 06:28:10,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:28:10,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068010897] [2020-12-22 06:28:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:28:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:28:10,215 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 06:28:10,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068010897] [2020-12-22 06:28:10,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:28:10,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:28:10,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964201503] [2020-12-22 06:28:10,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:28:10,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:28:10,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:28:10,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:28:10,217 INFO L87 Difference]: Start difference. First operand 43847 states and 79385 transitions. Second operand 3 states. [2020-12-22 06:28:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:28:13,224 INFO L93 Difference]: Finished difference Result 123043 states and 222605 transitions. [2020-12-22 06:28:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:28:13,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 06:28:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:28:13,374 INFO L225 Difference]: With dead ends: 123043 [2020-12-22 06:28:13,375 INFO L226 Difference]: Without dead ends: 79458 [2020-12-22 06:28:13,418 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 06:28:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79458 states. [2020-12-22 06:28:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79458 to 78921. [2020-12-22 06:28:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78921 states. [2020-12-22 06:28:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78921 states to 78921 states and 142490 transitions. [2020-12-22 06:28:17,089 INFO L78 Accepts]: Start accepts. Automaton has 78921 states and 142490 transitions. Word has length 78 [2020-12-22 06:28:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:28:17,089 INFO L481 AbstractCegarLoop]: Abstraction has 78921 states and 142490 transitions. [2020-12-22 06:28:17,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:28:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 78921 states and 142490 transitions. [2020-12-22 06:28:17,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:28:17,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:28:17,108 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, 1, 1, 1] [2020-12-22 06:28:17,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:28:17,108 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 06:28:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:28:17,109 INFO L82 PathProgramCache]: Analyzing trace with hash -386401119, now seen corresponding path program 1 times [2020-12-22 06:28:17,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:28:17,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080822328] [2020-12-22 06:28:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:28:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:28:17,199 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 06:28:17,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080822328] [2020-12-22 06:28:17,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905162905] [2020-12-22 06:28:17,200 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 06:28:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:28:17,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 06:28:17,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:28:18,002 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 06:28:18,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:28:18,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 06:28:18,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933694503] [2020-12-22 06:28:18,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:28:18,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:28:18,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:28:18,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:28:18,005 INFO L87 Difference]: Start difference. First operand 78921 states and 142490 transitions. Second operand 8 states. [2020-12-22 06:28:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:28:21,344 INFO L93 Difference]: Finished difference Result 84069 states and 151460 transitions. [2020-12-22 06:28:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 06:28:21,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 06:28:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:28:21,481 INFO L225 Difference]: With dead ends: 84069 [2020-12-22 06:28:21,481 INFO L226 Difference]: Without dead ends: 83532 [2020-12-22 06:28:21,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-22 06:28:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83532 states. [2020-12-22 06:28:24,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83532 to 81338. [2020-12-22 06:28:24,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81338 states. [2020-12-22 06:28:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81338 states to 81338 states and 146777 transitions. [2020-12-22 06:28:24,885 INFO L78 Accepts]: Start accepts. Automaton has 81338 states and 146777 transitions. Word has length 79 [2020-12-22 06:28:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:28:24,885 INFO L481 AbstractCegarLoop]: Abstraction has 81338 states and 146777 transitions. [2020-12-22 06:28:24,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:28:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 81338 states and 146777 transitions. [2020-12-22 06:28:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:28:24,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:28:24,898 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 06:28:25,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:28:25,111 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 06:28:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:28:25,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1807916577, now seen corresponding path program 1 times [2020-12-22 06:28:25,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:28:25,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813192385] [2020-12-22 06:28:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:28:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:28:25,180 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 06:28:25,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813192385] [2020-12-22 06:28:25,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:28:25,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:28:25,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462054566] [2020-12-22 06:28:25,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:28:25,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:28:25,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:28:25,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:28:25,185 INFO L87 Difference]: Start difference. First operand 81338 states and 146777 transitions. Second operand 3 states. [2020-12-22 06:28:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:28:30,595 INFO L93 Difference]: Finished difference Result 236877 states and 427642 transitions. [2020-12-22 06:28:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:28:30,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:28:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:28:30,931 INFO L225 Difference]: With dead ends: 236877 [2020-12-22 06:28:30,931 INFO L226 Difference]: Without dead ends: 157665 [2020-12-22 06:28:31,008 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 06:28:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157665 states. [2020-12-22 06:28:37,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157665 to 157128. [2020-12-22 06:28:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157128 states. [2020-12-22 06:28:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157128 states to 157128 states and 283172 transitions. [2020-12-22 06:28:37,913 INFO L78 Accepts]: Start accepts. Automaton has 157128 states and 283172 transitions. Word has length 82 [2020-12-22 06:28:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:28:37,914 INFO L481 AbstractCegarLoop]: Abstraction has 157128 states and 283172 transitions. [2020-12-22 06:28:37,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:28:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 157128 states and 283172 transitions. [2020-12-22 06:28:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:28:37,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:28:37,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:28:37,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:28:37,936 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 06:28:37,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:28:37,936 INFO L82 PathProgramCache]: Analyzing trace with hash -575350940, now seen corresponding path program 1 times [2020-12-22 06:28:37,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:28:37,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588631163] [2020-12-22 06:28:37,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:28:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:28:38,028 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 06:28:38,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588631163] [2020-12-22 06:28:38,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:28:38,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:28:38,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785394589] [2020-12-22 06:28:38,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:28:38,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:28:38,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:28:38,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:28:38,033 INFO L87 Difference]: Start difference. First operand 157128 states and 283172 transitions. Second operand 3 states. [2020-12-22 06:28:46,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:28:46,667 INFO L93 Difference]: Finished difference Result 280294 states and 504030 transitions. [2020-12-22 06:28:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:28:46,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 06:28:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:28:47,271 INFO L225 Difference]: With dead ends: 280294 [2020-12-22 06:28:47,272 INFO L226 Difference]: Without dead ends: 279757 [2020-12-22 06:28:47,333 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 06:28:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279757 states. [2020-12-22 06:28:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279757 to 279220. [2020-12-22 06:28:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279220 states. [2020-12-22 06:28:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279220 states to 279220 states and 501172 transitions. [2020-12-22 06:28:59,253 INFO L78 Accepts]: Start accepts. Automaton has 279220 states and 501172 transitions. Word has length 83 [2020-12-22 06:28:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:28:59,253 INFO L481 AbstractCegarLoop]: Abstraction has 279220 states and 501172 transitions. [2020-12-22 06:28:59,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:28:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 279220 states and 501172 transitions. [2020-12-22 06:28:59,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:28:59,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:28:59,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:28:59,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:28:59,275 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 06:28:59,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:28:59,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1794223283, now seen corresponding path program 1 times [2020-12-22 06:28:59,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:28:59,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836216411] [2020-12-22 06:28:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:28:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:28:59,373 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 06:28:59,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836216411] [2020-12-22 06:28:59,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:28:59,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:28:59,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685137141] [2020-12-22 06:28:59,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:28:59,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:28:59,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:28:59,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:28:59,375 INFO L87 Difference]: Start difference. First operand 279220 states and 501172 transitions. Second operand 5 states. [2020-12-22 06:29:08,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:08,847 INFO L93 Difference]: Finished difference Result 281224 states and 504562 transitions. [2020-12-22 06:29:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:29:08,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-12-22 06:29:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:09,460 INFO L225 Difference]: With dead ends: 281224 [2020-12-22 06:29:09,460 INFO L226 Difference]: Without dead ends: 280813 [2020-12-22 06:29:09,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:29:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280813 states. [2020-12-22 06:29:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280813 to 279603. [2020-12-22 06:29:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279603 states. [2020-12-22 06:29:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279603 states to 279603 states and 501817 transitions. [2020-12-22 06:29:23,069 INFO L78 Accepts]: Start accepts. Automaton has 279603 states and 501817 transitions. Word has length 84 [2020-12-22 06:29:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:23,070 INFO L481 AbstractCegarLoop]: Abstraction has 279603 states and 501817 transitions. [2020-12-22 06:29:23,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 279603 states and 501817 transitions. [2020-12-22 06:29:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:29:23,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:23,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:23,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:29:23,110 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 06:29:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:23,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1887741605, now seen corresponding path program 1 times [2020-12-22 06:29:23,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:23,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877161003] [2020-12-22 06:29:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:23,333 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 06:29:23,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877161003] [2020-12-22 06:29:23,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:23,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 06:29:23,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560942614] [2020-12-22 06:29:23,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 06:29:23,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:23,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 06:29:23,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:29:23,339 INFO L87 Difference]: Start difference. First operand 279603 states and 501817 transitions. Second operand 10 states. [2020-12-22 06:29:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:34,528 INFO L93 Difference]: Finished difference Result 280529 states and 503374 transitions. [2020-12-22 06:29:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 06:29:34,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-12-22 06:29:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:35,281 INFO L225 Difference]: With dead ends: 280529 [2020-12-22 06:29:35,281 INFO L226 Difference]: Without dead ends: 279741 [2020-12-22 06:29:35,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-12-22 06:29:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279741 states. [2020-12-22 06:29:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279741 to 279543. [2020-12-22 06:29:46,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279543 states. [2020-12-22 06:29:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279543 states to 279543 states and 501706 transitions. [2020-12-22 06:29:47,622 INFO L78 Accepts]: Start accepts. Automaton has 279543 states and 501706 transitions. Word has length 85 [2020-12-22 06:29:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:47,622 INFO L481 AbstractCegarLoop]: Abstraction has 279543 states and 501706 transitions. [2020-12-22 06:29:47,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 06:29:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 279543 states and 501706 transitions. [2020-12-22 06:29:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 06:29:47,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:47,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:47,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:29:47,664 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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 06:29:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:47,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1702270050, now seen corresponding path program 1 times [2020-12-22 06:29:47,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:47,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242203058] [2020-12-22 06:29:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:47,762 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 06:29:47,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242203058] [2020-12-22 06:29:47,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:47,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:29:47,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857686486] [2020-12-22 06:29:47,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:47,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:47,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:47,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:47,764 INFO L87 Difference]: Start difference. First operand 279543 states and 501706 transitions. Second operand 5 states. [2020-12-22 06:29:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:57,308 INFO L93 Difference]: Finished difference Result 282852 states and 507175 transitions. [2020-12-22 06:29:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:29:57,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-12-22 06:29:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:58,040 INFO L225 Difference]: With dead ends: 282852 [2020-12-22 06:29:58,040 INFO L226 Difference]: Without dead ends: 282068 [2020-12-22 06:29:58,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:29:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282068 states. [2020-12-22 06:30:11,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282068 to 280258. [2020-12-22 06:30:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280258 states. [2020-12-22 06:30:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280258 states to 280258 states and 502894 transitions. [2020-12-22 06:30:12,706 INFO L78 Accepts]: Start accepts. Automaton has 280258 states and 502894 transitions. Word has length 97 [2020-12-22 06:30:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:12,706 INFO L481 AbstractCegarLoop]: Abstraction has 280258 states and 502894 transitions. [2020-12-22 06:30:12,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 280258 states and 502894 transitions. [2020-12-22 06:30:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 06:30:12,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:12,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:12,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:30:12,828 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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 06:30:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:12,828 INFO L82 PathProgramCache]: Analyzing trace with hash -945721823, now seen corresponding path program 1 times [2020-12-22 06:30:12,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:12,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552351442] [2020-12-22 06:30:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:13,108 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 06:30:13,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552351442] [2020-12-22 06:30:13,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:13,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 06:30:13,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008869377] [2020-12-22 06:30:13,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 06:30:13,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:13,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 06:30:13,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:30:13,115 INFO L87 Difference]: Start difference. First operand 280258 states and 502894 transitions. Second operand 10 states.