/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/eca-rers2012/Problem01_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:26:07,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:26:07,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:26:07,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-21 23:26:07,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-21 23:26:07,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-21 23:26:07,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-21 23:26:07,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-21 23:26:07,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-21 23:26:07,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-21 23:26:07,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-21 23:26:07,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-21 23:26:07,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 23:26:07,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 23:26:07,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 23:26:07,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 23:26:07,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 23:26:07,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 23:26:07,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 23:26:07,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 23:26:07,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 23:26:07,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 23:26:07,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 23:26:07,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 23:26:07,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-21 23:26:07,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-21 23:26:07,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-21 23:26:07,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-21 23:26:07,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-21 23:26:07,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-21 23:26:07,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-21 23:26:07,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-21 23:26:07,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-21 23:26:07,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 23:26:07,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 23:26:07,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 23:26:07,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:26:07,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:26:07,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:26:07,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:26:07,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:26:07,569 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:26:07,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:26:07,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:26:07,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:26:07,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:26:07,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:26:07,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:26:07,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:26:07,572 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:26:07,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:26:07,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:26:07,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:26:07,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:26:07,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:26:07,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:26:07,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:26:07,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:26:07,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:26:07,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:26:07,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:26:07,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:26:07,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:26:08,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:26:08,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:26:08,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:26:08,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:26:08,100 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:26:08,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label01.c [2020-12-21 23:26:08,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1301bbb/613a128b1a354318887b03af5b659e15/FLAGd2fc11e4e [2020-12-21 23:26:08,864 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:26:08,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label01.c [2020-12-21 23:26:08,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1301bbb/613a128b1a354318887b03af5b659e15/FLAGd2fc11e4e [2020-12-21 23:26:09,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1301bbb/613a128b1a354318887b03af5b659e15 [2020-12-21 23:26:09,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:26:09,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:26:09,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:26:09,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:26:09,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:26:09,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:09,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a90d456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09, skipping insertion in model container [2020-12-21 23:26:09,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:09,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:26:09,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:26:09,660 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/eca-rers2012/Problem01_label01.c[16869,16882] [2020-12-21 23:26:09,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:26:09,704 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:26:09,813 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/eca-rers2012/Problem01_label01.c[16869,16882] [2020-12-21 23:26:09,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:26:09,902 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:26:09,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09 WrapperNode [2020-12-21 23:26:09,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:26:09,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:26:09,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:26:09,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:26:09,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:09,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:10,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:26:10,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:26:10,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:26:10,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:26:10,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:10,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:10,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:10,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:10,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:10,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:10,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (1/1) ... [2020-12-21 23:26:10,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:26:10,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:26:10,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:26:10,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:26:10,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (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 [2020-12-21 23:26:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:26:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:26:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:26:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:26:11,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:26:11,484 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-21 23:26:11,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:26:11 BoogieIcfgContainer [2020-12-21 23:26:11,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:26:11,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:26:11,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:26:11,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:26:11,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:26:09" (1/3) ... [2020-12-21 23:26:11,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7772ea8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:26:11, skipping insertion in model container [2020-12-21 23:26:11,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:26:09" (2/3) ... [2020-12-21 23:26:11,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7772ea8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:26:11, skipping insertion in model container [2020-12-21 23:26:11,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:26:11" (3/3) ... [2020-12-21 23:26:11,501 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label01.c [2020-12-21 23:26:11,508 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:26:11,512 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 23:26:11,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 23:26:11,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:26:11,563 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:26:11,563 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:26:11,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:26:11,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:26:11,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:26:11,564 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:26:11,564 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:26:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-12-21 23:26:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-21 23:26:11,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:26:11,594 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] [2020-12-21 23:26:11,595 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:26:11,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:26:11,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1687716446, now seen corresponding path program 1 times [2020-12-21 23:26:11,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:26:11,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515131858] [2020-12-21 23:26:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:26:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:26:12,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515131858] [2020-12-21 23:26:12,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:26:12,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:26:12,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309666891] [2020-12-21 23:26:12,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:26:12,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:26:12,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:26:12,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:12,102 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2020-12-21 23:26:12,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:26:12,870 INFO L93 Difference]: Finished difference Result 553 states and 940 transitions. [2020-12-21 23:26:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:26:12,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-21 23:26:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:26:12,887 INFO L225 Difference]: With dead ends: 553 [2020-12-21 23:26:12,887 INFO L226 Difference]: Without dead ends: 266 [2020-12-21 23:26:12,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-21 23:26:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-21 23:26:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-21 23:26:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2020-12-21 23:26:12,959 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 91 [2020-12-21 23:26:12,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:26:12,960 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2020-12-21 23:26:12,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:26:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2020-12-21 23:26:12,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-21 23:26:12,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:26:12,966 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:26:12,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:26:12,966 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:26:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:26:12,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2029846293, now seen corresponding path program 1 times [2020-12-21 23:26:12,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:26:12,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828909403] [2020-12-21 23:26:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:26:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:26:13,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828909403] [2020-12-21 23:26:13,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:26:13,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:26:13,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103192246] [2020-12-21 23:26:13,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:26:13,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:26:13,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:26:13,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:13,070 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand 3 states. [2020-12-21 23:26:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:26:13,578 INFO L93 Difference]: Finished difference Result 792 states and 1135 transitions. [2020-12-21 23:26:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:26:13,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-21 23:26:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:26:13,583 INFO L225 Difference]: With dead ends: 792 [2020-12-21 23:26:13,583 INFO L226 Difference]: Without dead ends: 528 [2020-12-21 23:26:13,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-12-21 23:26:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2020-12-21 23:26:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-12-21 23:26:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 709 transitions. [2020-12-21 23:26:13,624 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 709 transitions. Word has length 97 [2020-12-21 23:26:13,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:26:13,624 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 709 transitions. [2020-12-21 23:26:13,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:26:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 709 transitions. [2020-12-21 23:26:13,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-21 23:26:13,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:26:13,631 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:26:13,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:26:13,633 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:26:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:26:13,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1369105899, now seen corresponding path program 1 times [2020-12-21 23:26:13,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:26:13,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897971264] [2020-12-21 23:26:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:26:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:26:13,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897971264] [2020-12-21 23:26:13,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:26:13,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:26:13,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776287016] [2020-12-21 23:26:13,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:26:13,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:26:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:26:13,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:13,817 INFO L87 Difference]: Start difference. First operand 528 states and 709 transitions. Second operand 3 states. [2020-12-21 23:26:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:26:14,396 INFO L93 Difference]: Finished difference Result 1578 states and 2122 transitions. [2020-12-21 23:26:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:26:14,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-21 23:26:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:26:14,406 INFO L225 Difference]: With dead ends: 1578 [2020-12-21 23:26:14,406 INFO L226 Difference]: Without dead ends: 1052 [2020-12-21 23:26:14,408 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 [2020-12-21 23:26:14,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-12-21 23:26:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-12-21 23:26:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-21 23:26:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1341 transitions. [2020-12-21 23:26:14,440 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1341 transitions. Word has length 98 [2020-12-21 23:26:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:26:14,441 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1341 transitions. [2020-12-21 23:26:14,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:26:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1341 transitions. [2020-12-21 23:26:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-21 23:26:14,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:26:14,444 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:26:14,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:26:14,444 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:26:14,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:26:14,445 INFO L82 PathProgramCache]: Analyzing trace with hash 410606261, now seen corresponding path program 1 times [2020-12-21 23:26:14,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:26:14,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980749170] [2020-12-21 23:26:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:26:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:26:14,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980749170] [2020-12-21 23:26:14,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:26:14,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:26:14,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338641342] [2020-12-21 23:26:14,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:26:14,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:26:14,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:26:14,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:14,541 INFO L87 Difference]: Start difference. First operand 1052 states and 1341 transitions. Second operand 3 states. [2020-12-21 23:26:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:26:15,069 INFO L93 Difference]: Finished difference Result 2364 states and 3015 transitions. [2020-12-21 23:26:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:26:15,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-21 23:26:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:26:15,076 INFO L225 Difference]: With dead ends: 2364 [2020-12-21 23:26:15,077 INFO L226 Difference]: Without dead ends: 1314 [2020-12-21 23:26:15,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-12-21 23:26:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2020-12-21 23:26:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-12-21 23:26:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1622 transitions. [2020-12-21 23:26:15,107 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1622 transitions. Word has length 102 [2020-12-21 23:26:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:26:15,107 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1622 transitions. [2020-12-21 23:26:15,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:26:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1622 transitions. [2020-12-21 23:26:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-21 23:26:15,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:26:15,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:26:15,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:26:15,111 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:26:15,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:26:15,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1039825171, now seen corresponding path program 1 times [2020-12-21 23:26:15,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:26:15,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544524160] [2020-12-21 23:26:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:26:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:26:15,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544524160] [2020-12-21 23:26:15,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:26:15,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:26:15,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120722893] [2020-12-21 23:26:15,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:26:15,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:26:15,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:26:15,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:15,184 INFO L87 Difference]: Start difference. First operand 1314 states and 1622 transitions. Second operand 3 states. [2020-12-21 23:26:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:26:15,841 INFO L93 Difference]: Finished difference Result 3543 states and 4376 transitions. [2020-12-21 23:26:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:26:15,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-21 23:26:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:26:15,852 INFO L225 Difference]: With dead ends: 3543 [2020-12-21 23:26:15,852 INFO L226 Difference]: Without dead ends: 2231 [2020-12-21 23:26:15,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-12-21 23:26:15,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1969. [2020-12-21 23:26:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1969 states. [2020-12-21 23:26:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2350 transitions. [2020-12-21 23:26:15,899 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2350 transitions. Word has length 106 [2020-12-21 23:26:15,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:26:15,900 INFO L481 AbstractCegarLoop]: Abstraction has 1969 states and 2350 transitions. [2020-12-21 23:26:15,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:26:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2350 transitions. [2020-12-21 23:26:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-21 23:26:15,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:26:15,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:26:15,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:26:15,904 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:26:15,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:26:15,905 INFO L82 PathProgramCache]: Analyzing trace with hash 431747154, now seen corresponding path program 1 times [2020-12-21 23:26:15,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:26:15,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103532371] [2020-12-21 23:26:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:26:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:26:15,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103532371] [2020-12-21 23:26:15,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:26:15,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:26:15,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944894600] [2020-12-21 23:26:15,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:26:15,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:26:15,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:26:15,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:15,965 INFO L87 Difference]: Start difference. First operand 1969 states and 2350 transitions. Second operand 3 states. [2020-12-21 23:26:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:26:16,498 INFO L93 Difference]: Finished difference Result 3674 states and 4399 transitions. [2020-12-21 23:26:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:26:16,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-21 23:26:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:26:16,509 INFO L225 Difference]: With dead ends: 3674 [2020-12-21 23:26:16,509 INFO L226 Difference]: Without dead ends: 1576 [2020-12-21 23:26:16,514 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 [2020-12-21 23:26:16,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-12-21 23:26:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1314. [2020-12-21 23:26:16,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-12-21 23:26:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1436 transitions. [2020-12-21 23:26:16,549 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1436 transitions. Word has length 113 [2020-12-21 23:26:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:26:16,549 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1436 transitions. [2020-12-21 23:26:16,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:26:16,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1436 transitions. [2020-12-21 23:26:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-21 23:26:16,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:26:16,555 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:26:16,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-21 23:26:16,556 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:26:16,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:26:16,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1798535755, now seen corresponding path program 1 times [2020-12-21 23:26:16,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:26:16,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958889565] [2020-12-21 23:26:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:26:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-21 23:26:16,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958889565] [2020-12-21 23:26:16,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:26:16,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:26:16,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396612881] [2020-12-21 23:26:16,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:26:16,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:26:16,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:26:16,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:16,647 INFO L87 Difference]: Start difference. First operand 1314 states and 1436 transitions. Second operand 3 states. [2020-12-21 23:26:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:26:17,152 INFO L93 Difference]: Finished difference Result 3281 states and 3605 transitions. [2020-12-21 23:26:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:26:17,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-12-21 23:26:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:26:17,161 INFO L225 Difference]: With dead ends: 3281 [2020-12-21 23:26:17,161 INFO L226 Difference]: Without dead ends: 1838 [2020-12-21 23:26:17,163 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 [2020-12-21 23:26:17,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-12-21 23:26:17,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1576. [2020-12-21 23:26:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-12-21 23:26:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1753 transitions. [2020-12-21 23:26:17,199 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1753 transitions. Word has length 115 [2020-12-21 23:26:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:26:17,200 INFO L481 AbstractCegarLoop]: Abstraction has 1576 states and 1753 transitions. [2020-12-21 23:26:17,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:26:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1753 transitions. [2020-12-21 23:26:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-21 23:26:17,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:26:17,203 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:26:17,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-21 23:26:17,204 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:26:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:26:17,204 INFO L82 PathProgramCache]: Analyzing trace with hash 20952950, now seen corresponding path program 1 times [2020-12-21 23:26:17,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:26:17,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752784522] [2020-12-21 23:26:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:26:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-21 23:26:17,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752784522] [2020-12-21 23:26:17,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:26:17,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 23:26:17,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278220978] [2020-12-21 23:26:17,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:26:17,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:26:17,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:26:17,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:17,291 INFO L87 Difference]: Start difference. First operand 1576 states and 1753 transitions. Second operand 3 states. [2020-12-21 23:26:17,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:26:17,723 INFO L93 Difference]: Finished difference Result 3543 states and 3941 transitions. [2020-12-21 23:26:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:26:17,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-12-21 23:26:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:26:17,732 INFO L225 Difference]: With dead ends: 3543 [2020-12-21 23:26:17,732 INFO L226 Difference]: Without dead ends: 1838 [2020-12-21 23:26:17,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:26:17,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-12-21 23:26:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1838. [2020-12-21 23:26:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-12-21 23:26:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2026 transitions. [2020-12-21 23:26:17,786 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2026 transitions. Word has length 150 [2020-12-21 23:26:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:26:17,786 INFO L481 AbstractCegarLoop]: Abstraction has 1838 states and 2026 transitions. [2020-12-21 23:26:17,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:26:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2026 transitions. [2020-12-21 23:26:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-21 23:26:17,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:26:17,791 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:26:17,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-21 23:26:17,791 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:26:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:26:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash 59257480, now seen corresponding path program 1 times [2020-12-21 23:26:17,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:26:17,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958284209] [2020-12-21 23:26:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:26:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-21 23:26:17,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958284209] [2020-12-21 23:26:17,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753081770] [2020-12-21 23:26:17,906 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 [2020-12-21 23:26:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:26:18,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-21 23:26:18,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:26:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-12-21 23:26:18,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:26:18,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-12-21 23:26:18,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182979065] [2020-12-21 23:26:18,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:26:18,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:26:18,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:26:18,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:26:18,347 INFO L87 Difference]: Start difference. First operand 1838 states and 2026 transitions. Second operand 3 states. [2020-12-21 23:26:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:26:18,964 INFO L93 Difference]: Finished difference Result 3803 states and 4195 transitions. [2020-12-21 23:26:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:26:18,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-12-21 23:26:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:26:18,966 INFO L225 Difference]: With dead ends: 3803 [2020-12-21 23:26:18,966 INFO L226 Difference]: Without dead ends: 0 [2020-12-21 23:26:18,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:26:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-21 23:26:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-21 23:26:18,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-21 23:26:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-21 23:26:18,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2020-12-21 23:26:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:26:18,971 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-21 23:26:18,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:26:18,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-21 23:26:18,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-21 23:26:19,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-21 23:26:19,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-21 23:26:19,447 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-12-21 23:26:19,450 INFO L189 CegarLoopUtils]: For program point L564(line 564) no Hoare annotation was computed. [2020-12-21 23:26:19,450 INFO L189 CegarLoopUtils]: For program point L531(line 531) no Hoare annotation was computed. [2020-12-21 23:26:19,451 INFO L189 CegarLoopUtils]: For program point L498(line 498) no Hoare annotation was computed. [2020-12-21 23:26:19,451 INFO L189 CegarLoopUtils]: For program point L465(line 465) no Hoare annotation was computed. [2020-12-21 23:26:19,451 INFO L189 CegarLoopUtils]: For program point L432(line 432) no Hoare annotation was computed. [2020-12-21 23:26:19,451 INFO L189 CegarLoopUtils]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-21 23:26:19,451 INFO L189 CegarLoopUtils]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-21 23:26:19,455 INFO L189 CegarLoopUtils]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-21 23:26:19,455 INFO L189 CegarLoopUtils]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,455 INFO L189 CegarLoopUtils]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,455 INFO L189 CegarLoopUtils]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,455 INFO L189 CegarLoopUtils]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,455 INFO L189 CegarLoopUtils]: For program point L401(lines 401 403) no Hoare annotation was computed. [2020-12-21 23:26:19,455 INFO L189 CegarLoopUtils]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,457 INFO L189 CegarLoopUtils]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,457 INFO L189 CegarLoopUtils]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-21 23:26:19,458 INFO L189 CegarLoopUtils]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-21 23:26:19,458 INFO L189 CegarLoopUtils]: For program point L567(line 567) no Hoare annotation was computed. [2020-12-21 23:26:19,458 INFO L189 CegarLoopUtils]: For program point L534(line 534) no Hoare annotation was computed. [2020-12-21 23:26:19,458 INFO L189 CegarLoopUtils]: For program point L501(line 501) no Hoare annotation was computed. [2020-12-21 23:26:19,458 INFO L189 CegarLoopUtils]: For program point L468(line 468) no Hoare annotation was computed. [2020-12-21 23:26:19,458 INFO L189 CegarLoopUtils]: For program point L435(line 435) no Hoare annotation was computed. [2020-12-21 23:26:19,458 INFO L189 CegarLoopUtils]: For program point L402(line 402) no Hoare annotation was computed. [2020-12-21 23:26:19,458 INFO L189 CegarLoopUtils]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-21 23:26:19,459 INFO L189 CegarLoopUtils]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-21 23:26:19,459 INFO L189 CegarLoopUtils]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-21 23:26:19,460 INFO L189 CegarLoopUtils]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-21 23:26:19,460 INFO L189 CegarLoopUtils]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,460 INFO L189 CegarLoopUtils]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,460 INFO L189 CegarLoopUtils]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,460 INFO L189 CegarLoopUtils]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,460 INFO L189 CegarLoopUtils]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L570(line 570) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L537(line 537) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L504(line 504) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L471(line 471) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L438(line 438) no Hoare annotation was computed. [2020-12-21 23:26:19,461 INFO L189 CegarLoopUtils]: For program point L405(line 405) no Hoare annotation was computed. [2020-12-21 23:26:19,462 INFO L189 CegarLoopUtils]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-21 23:26:19,462 INFO L189 CegarLoopUtils]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-21 23:26:19,462 INFO L189 CegarLoopUtils]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-21 23:26:19,462 INFO L189 CegarLoopUtils]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-21 23:26:19,463 INFO L189 CegarLoopUtils]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-21 23:26:19,463 INFO L189 CegarLoopUtils]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-21 23:26:19,463 INFO L189 CegarLoopUtils]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,463 INFO L189 CegarLoopUtils]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,463 INFO L189 CegarLoopUtils]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,463 INFO L189 CegarLoopUtils]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,463 INFO L189 CegarLoopUtils]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,463 INFO L189 CegarLoopUtils]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,463 INFO L189 CegarLoopUtils]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L573(line 573) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L540(line 540) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L507(line 507) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L474(line 474) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L441(line 441) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L408(line 408) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-21 23:26:19,464 INFO L189 CegarLoopUtils]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-21 23:26:19,465 INFO L189 CegarLoopUtils]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-21 23:26:19,465 INFO L189 CegarLoopUtils]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,465 INFO L189 CegarLoopUtils]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,465 INFO L189 CegarLoopUtils]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,465 INFO L189 CegarLoopUtils]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,465 INFO L189 CegarLoopUtils]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,466 INFO L189 CegarLoopUtils]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,466 INFO L189 CegarLoopUtils]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-21 23:26:19,466 INFO L189 CegarLoopUtils]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-21 23:26:19,466 INFO L189 CegarLoopUtils]: For program point L576(line 576) no Hoare annotation was computed. [2020-12-21 23:26:19,466 INFO L189 CegarLoopUtils]: For program point L543(line 543) no Hoare annotation was computed. [2020-12-21 23:26:19,466 INFO L189 CegarLoopUtils]: For program point L510(line 510) no Hoare annotation was computed. [2020-12-21 23:26:19,466 INFO L189 CegarLoopUtils]: For program point L477(line 477) no Hoare annotation was computed. [2020-12-21 23:26:19,466 INFO L189 CegarLoopUtils]: For program point L444(line 444) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L411(line 411) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,467 INFO L189 CegarLoopUtils]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-21 23:26:19,468 INFO L189 CegarLoopUtils]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-21 23:26:19,468 INFO L189 CegarLoopUtils]: For program point L579(line 579) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L546(line 546) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L513(line 513) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L480(line 480) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L447(line 447) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L414(line 414) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-21 23:26:19,469 INFO L189 CegarLoopUtils]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-21 23:26:19,470 INFO L189 CegarLoopUtils]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-21 23:26:19,470 INFO L189 CegarLoopUtils]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2020-12-21 23:26:19,470 INFO L189 CegarLoopUtils]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,470 INFO L189 CegarLoopUtils]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,470 INFO L189 CegarLoopUtils]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,470 INFO L189 CegarLoopUtils]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,470 INFO L189 CegarLoopUtils]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,470 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-21 23:26:19,470 INFO L189 CegarLoopUtils]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-21 23:26:19,471 INFO L189 CegarLoopUtils]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-21 23:26:19,471 INFO L189 CegarLoopUtils]: For program point L582(line 582) no Hoare annotation was computed. [2020-12-21 23:26:19,471 INFO L189 CegarLoopUtils]: For program point L549(line 549) no Hoare annotation was computed. [2020-12-21 23:26:19,471 INFO L189 CegarLoopUtils]: For program point L516(line 516) no Hoare annotation was computed. [2020-12-21 23:26:19,471 INFO L189 CegarLoopUtils]: For program point L483(line 483) no Hoare annotation was computed. [2020-12-21 23:26:19,471 INFO L189 CegarLoopUtils]: For program point L450(line 450) no Hoare annotation was computed. [2020-12-21 23:26:19,471 INFO L189 CegarLoopUtils]: For program point L417(line 417) no Hoare annotation was computed. [2020-12-21 23:26:19,471 INFO L189 CegarLoopUtils]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-21 23:26:19,472 INFO L185 CegarLoopUtils]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse6 (<= ~a17~0 0)) (.cse1 (= ~a7~0 0)) (.cse3 (= ~a7~0 1)) (.cse4 (<= ~a16~0 5)) (.cse5 (= ~a20~0 1)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4 .cse5) (and .cse3 .cse6) (and .cse3 (<= ~a16~0 4)) (and .cse6 .cse1) (and .cse3 .cse4 .cse5 .cse2))) [2020-12-21 23:26:19,472 INFO L189 CegarLoopUtils]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,472 INFO L189 CegarLoopUtils]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,472 INFO L189 CegarLoopUtils]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,472 INFO L189 CegarLoopUtils]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,472 INFO L189 CegarLoopUtils]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,472 INFO L189 CegarLoopUtils]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-21 23:26:19,473 INFO L189 CegarLoopUtils]: For program point L552(line 552) no Hoare annotation was computed. [2020-12-21 23:26:19,473 INFO L189 CegarLoopUtils]: For program point L519(line 519) no Hoare annotation was computed. [2020-12-21 23:26:19,473 INFO L189 CegarLoopUtils]: For program point L486(line 486) no Hoare annotation was computed. [2020-12-21 23:26:19,473 INFO L189 CegarLoopUtils]: For program point L453(line 453) no Hoare annotation was computed. [2020-12-21 23:26:19,473 INFO L189 CegarLoopUtils]: For program point L420(line 420) no Hoare annotation was computed. [2020-12-21 23:26:19,473 INFO L189 CegarLoopUtils]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-21 23:26:19,473 INFO L189 CegarLoopUtils]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-21 23:26:19,473 INFO L189 CegarLoopUtils]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-21 23:26:19,474 INFO L189 CegarLoopUtils]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-21 23:26:19,474 INFO L189 CegarLoopUtils]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-21 23:26:19,474 INFO L189 CegarLoopUtils]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-21 23:26:19,474 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-21 23:26:19,474 INFO L189 CegarLoopUtils]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-21 23:26:19,474 INFO L192 CegarLoopUtils]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-21 23:26:19,474 INFO L189 CegarLoopUtils]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,474 INFO L189 CegarLoopUtils]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,474 INFO L189 CegarLoopUtils]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,474 INFO L189 CegarLoopUtils]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,475 INFO L189 CegarLoopUtils]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,475 INFO L189 CegarLoopUtils]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-21 23:26:19,475 INFO L189 CegarLoopUtils]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-21 23:26:19,475 INFO L189 CegarLoopUtils]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-21 23:26:19,475 INFO L189 CegarLoopUtils]: For program point L555(line 555) no Hoare annotation was computed. [2020-12-21 23:26:19,475 INFO L189 CegarLoopUtils]: For program point L522(line 522) no Hoare annotation was computed. [2020-12-21 23:26:19,475 INFO L189 CegarLoopUtils]: For program point L489(line 489) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point L456(line 456) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point L423(line 423) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-21 23:26:19,476 INFO L189 CegarLoopUtils]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L558(line 558) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L525(line 525) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L492(line 492) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L459(line 459) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L426(line 426) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-21 23:26:19,477 INFO L189 CegarLoopUtils]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-21 23:26:19,478 INFO L189 CegarLoopUtils]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-21 23:26:19,478 INFO L189 CegarLoopUtils]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-21 23:26:19,478 INFO L189 CegarLoopUtils]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-21 23:26:19,478 INFO L189 CegarLoopUtils]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,480 INFO L185 CegarLoopUtils]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse6 (<= ~a17~0 0)) (.cse1 (= ~a7~0 0)) (.cse3 (= ~a7~0 1)) (.cse4 (<= ~a16~0 5)) (.cse5 (= ~a20~0 1)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4 .cse5) (and .cse3 .cse6) (and .cse3 (<= ~a16~0 4)) (and .cse6 .cse1) (and .cse3 .cse4 .cse5 .cse2))) [2020-12-21 23:26:19,480 INFO L189 CegarLoopUtils]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,480 INFO L189 CegarLoopUtils]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,480 INFO L189 CegarLoopUtils]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,480 INFO L189 CegarLoopUtils]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,481 INFO L189 CegarLoopUtils]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-21 23:26:19,481 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-21 23:26:19,481 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 459) no Hoare annotation was computed. [2020-12-21 23:26:19,481 INFO L189 CegarLoopUtils]: For program point L561(line 561) no Hoare annotation was computed. [2020-12-21 23:26:19,481 INFO L189 CegarLoopUtils]: For program point L528(line 528) no Hoare annotation was computed. [2020-12-21 23:26:19,481 INFO L189 CegarLoopUtils]: For program point L495(line 495) no Hoare annotation was computed. [2020-12-21 23:26:19,481 INFO L189 CegarLoopUtils]: For program point L462(line 462) no Hoare annotation was computed. [2020-12-21 23:26:19,481 INFO L189 CegarLoopUtils]: For program point L429(line 429) no Hoare annotation was computed. [2020-12-21 23:26:19,482 INFO L189 CegarLoopUtils]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-21 23:26:19,482 INFO L189 CegarLoopUtils]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-21 23:26:19,482 INFO L189 CegarLoopUtils]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,482 INFO L189 CegarLoopUtils]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,482 INFO L189 CegarLoopUtils]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,482 INFO L189 CegarLoopUtils]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,482 INFO L189 CegarLoopUtils]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2020-12-21 23:26:19,482 INFO L189 CegarLoopUtils]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-21 23:26:19,482 INFO L189 CegarLoopUtils]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-21 23:26:19,483 INFO L189 CegarLoopUtils]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-21 23:26:19,483 INFO L189 CegarLoopUtils]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-21 23:26:19,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:26:19 BoogieIcfgContainer [2020-12-21 23:26:19,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-21 23:26:19,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-21 23:26:19,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-21 23:26:19,529 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-21 23:26:19,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:26:11" (3/4) ... [2020-12-21 23:26:19,533 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-21 23:26:19,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-21 23:26:19,564 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-21 23:26:19,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:26:19,567 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:26:19,758 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/eca-rers2012/Problem01_label01.c-witness.graphml [2020-12-21 23:26:19,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-21 23:26:19,762 INFO L168 Benchmark]: Toolchain (without parser) took 10621.63 ms. Allocated memory was 153.1 MB in the beginning and 298.8 MB in the end (delta: 145.8 MB). Free memory was 125.9 MB in the beginning and 118.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 154.0 MB. Max. memory is 8.0 GB. [2020-12-21 23:26:19,762 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 153.1 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:26:19,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.42 ms. Allocated memory is still 153.1 MB. Free memory was 125.7 MB in the beginning and 132.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. [2020-12-21 23:26:19,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.12 ms. Allocated memory is still 153.1 MB. Free memory was 132.7 MB in the beginning and 126.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-21 23:26:19,763 INFO L168 Benchmark]: Boogie Preprocessor took 70.49 ms. Allocated memory is still 153.1 MB. Free memory was 126.9 MB in the beginning and 122.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-21 23:26:19,764 INFO L168 Benchmark]: RCFGBuilder took 1380.03 ms. Allocated memory was 153.1 MB in the beginning and 195.0 MB in the end (delta: 41.9 MB). Free memory was 122.2 MB in the beginning and 141.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 79.4 MB. Max. memory is 8.0 GB. [2020-12-21 23:26:19,765 INFO L168 Benchmark]: TraceAbstraction took 8036.73 ms. Allocated memory was 195.0 MB in the beginning and 298.8 MB in the end (delta: 103.8 MB). Free memory was 140.9 MB in the beginning and 133.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB. [2020-12-21 23:26:19,765 INFO L168 Benchmark]: Witness Printer took 230.37 ms. Allocated memory is still 298.8 MB. Free memory was 133.0 MB in the beginning and 118.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-21 23:26:19,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 153.1 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 762.42 ms. Allocated memory is still 153.1 MB. Free memory was 125.7 MB in the beginning and 132.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 131.12 ms. Allocated memory is still 153.1 MB. Free memory was 132.7 MB in the beginning and 126.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.49 ms. Allocated memory is still 153.1 MB. Free memory was 126.9 MB in the beginning and 122.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1380.03 ms. Allocated memory was 153.1 MB in the beginning and 195.0 MB in the end (delta: 41.9 MB). Free memory was 122.2 MB in the beginning and 141.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 79.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8036.73 ms. Allocated memory was 195.0 MB in the beginning and 298.8 MB in the end (delta: 103.8 MB). Free memory was 140.9 MB in the beginning and 133.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB. * Witness Printer took 230.37 ms. Allocated memory is still 298.8 MB. Free memory was 133.0 MB in the beginning and 118.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 459]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((a21 == 1 && a7 == 0) && a17 == 1) || (((a21 == 1 && a7 == 1) && a16 <= 5) && a20 == 1)) || (a7 == 1 && a17 <= 0)) || (a7 == 1 && a16 <= 4)) || (a17 <= 0 && a7 == 0)) || (((a7 == 1 && a16 <= 5) && a20 == 1) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a21 == 1 && a7 == 0) && a17 == 1) || (((a21 == 1 && a7 == 1) && a16 <= 5) && a20 == 1)) || (a7 == 1 && a17 <= 0)) || (a7 == 1 && a16 <= 4)) || (a17 <= 0 && a7 == 0)) || (((a7 == 1 && a16 <= 5) && a20 == 1) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 796 SDtfs, 958 SDslu, 45 SDs, 0 SdLazy, 2970 SolverSat, 524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1969occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 786 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 117 HoareAnnotationTreeSize, 3 FomulaSimplifications, 584 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 64 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1212 NumberOfCodeBlocks, 1212 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1202 ConstructedInterpolants, 0 QuantifiedInterpolants, 300447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 404 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 545/548 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...