/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/openssl-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:16:51,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:16:51,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:16:51,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-21 23:16:51,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-21 23:16:51,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-21 23:16:51,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-21 23:16:51,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-21 23:16:51,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-21 23:16:51,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-21 23:16:51,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-21 23:16:51,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-21 23:16:51,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 23:16:51,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 23:16:51,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 23:16:51,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 23:16:51,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 23:16:51,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 23:16:51,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 23:16:51,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 23:16:51,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 23:16:51,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 23:16:51,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 23:16:51,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 23:16:51,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-21 23:16:51,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-21 23:16:51,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-21 23:16:51,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-21 23:16:51,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-21 23:16:51,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-21 23:16:51,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-21 23:16:51,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-21 23:16:51,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-21 23:16:51,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-21 23:16:51,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-21 23:16:51,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-21 23:16:51,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-21 23:16:51,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-21 23:16:51,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 23:16:51,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 23:16:51,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 23:16:51,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:16:51,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:16:51,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:16:51,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:16:51,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:16:51,561 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:16:51,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:16:51,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:16:51,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:16:51,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:16:51,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:16:51,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:16:51,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:16:51,563 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:16:51,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:16:51,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:16:51,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:16:51,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:16:51,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:16:51,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:16:51,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:16:51,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:16:51,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:16:51,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:16:51,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:16:51,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:16:51,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:16:51,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:16:51,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:16:51,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:16:51,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:16:51,967 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:16:51,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-12-21 23:16:52,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b874dc2e7/0f28c0deb90848639c89d42ff0373aa3/FLAG48e3af7f8 [2020-12-21 23:16:52,790 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:16:52,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-12-21 23:16:52,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b874dc2e7/0f28c0deb90848639c89d42ff0373aa3/FLAG48e3af7f8 [2020-12-21 23:16:53,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b874dc2e7/0f28c0deb90848639c89d42ff0373aa3 [2020-12-21 23:16:53,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:16:53,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:16:53,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:16:53,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:16:53,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:16:53,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271f85df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53, skipping insertion in model container [2020-12-21 23:16:53,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:16:53,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:16:53,457 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/openssl-simplified/s3_srvr_13.cil.c[44554,44567] [2020-12-21 23:16:53,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:16:53,496 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:16:53,621 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/openssl-simplified/s3_srvr_13.cil.c[44554,44567] [2020-12-21 23:16:53,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:16:53,643 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:16:53,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53 WrapperNode [2020-12-21 23:16:53,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:16:53,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:16:53,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:16:53,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:16:53,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:16:53,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:16:53,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:16:53,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:16:53,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (1/1) ... [2020-12-21 23:16:53,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:16:53,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:16:53,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:16:53,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:16:53,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (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 23:16:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:16:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:16:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:16:53,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:16:54,225 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-21 23:16:55,023 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-12-21 23:16:55,026 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-12-21 23:16:55,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:16:55,044 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-21 23:16:55,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:16:55 BoogieIcfgContainer [2020-12-21 23:16:55,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:16:55,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:16:55,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:16:55,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:16:55,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:16:53" (1/3) ... [2020-12-21 23:16:55,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad3b350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:16:55, skipping insertion in model container [2020-12-21 23:16:55,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:16:53" (2/3) ... [2020-12-21 23:16:55,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad3b350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:16:55, skipping insertion in model container [2020-12-21 23:16:55,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:16:55" (3/3) ... [2020-12-21 23:16:55,061 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-12-21 23:16:55,067 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:16:55,072 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 23:16:55,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 23:16:55,119 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:16:55,119 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:16:55,119 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:16:55,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:16:55,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:16:55,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:16:55,120 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:16:55,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:16:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2020-12-21 23:16:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:16:55,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:55,149 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] [2020-12-21 23:16:55,150 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:55,156 INFO L82 PathProgramCache]: Analyzing trace with hash -651780530, now seen corresponding path program 1 times [2020-12-21 23:16:55,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:55,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702587456] [2020-12-21 23:16:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:55,505 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 23:16:55,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702587456] [2020-12-21 23:16:55,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:55,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:55,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997734547] [2020-12-21 23:16:55,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:55,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:55,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:55,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:55,540 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 3 states. [2020-12-21 23:16:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:55,962 INFO L93 Difference]: Finished difference Result 325 states and 557 transitions. [2020-12-21 23:16:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:55,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:16:55,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:55,978 INFO L225 Difference]: With dead ends: 325 [2020-12-21 23:16:55,979 INFO L226 Difference]: Without dead ends: 160 [2020-12-21 23:16:55,983 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 23:16:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-21 23:16:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-12-21 23:16:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-21 23:16:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 249 transitions. [2020-12-21 23:16:56,040 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 249 transitions. Word has length 26 [2020-12-21 23:16:56,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:56,041 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 249 transitions. [2020-12-21 23:16:56,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 249 transitions. [2020-12-21 23:16:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:16:56,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:56,046 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] [2020-12-21 23:16:56,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:16:56,046 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:56,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:56,047 INFO L82 PathProgramCache]: Analyzing trace with hash 490720896, now seen corresponding path program 1 times [2020-12-21 23:16:56,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:56,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067475810] [2020-12-21 23:16:56,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:16:56,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067475810] [2020-12-21 23:16:56,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:56,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:56,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644050584] [2020-12-21 23:16:56,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:56,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:56,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:56,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:56,112 INFO L87 Difference]: Start difference. First operand 158 states and 249 transitions. Second operand 3 states. [2020-12-21 23:16:56,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:56,418 INFO L93 Difference]: Finished difference Result 330 states and 519 transitions. [2020-12-21 23:16:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:56,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:16:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:56,421 INFO L225 Difference]: With dead ends: 330 [2020-12-21 23:16:56,421 INFO L226 Difference]: Without dead ends: 180 [2020-12-21 23:16:56,423 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 23:16:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-21 23:16:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-12-21 23:16:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-21 23:16:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 279 transitions. [2020-12-21 23:16:56,440 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 279 transitions. Word has length 27 [2020-12-21 23:16:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:56,441 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 279 transitions. [2020-12-21 23:16:56,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 279 transitions. [2020-12-21 23:16:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:16:56,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:56,442 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] [2020-12-21 23:16:56,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:16:56,443 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:56,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:56,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1046842997, now seen corresponding path program 1 times [2020-12-21 23:16:56,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:56,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471701321] [2020-12-21 23:16:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:56,538 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 23:16:56,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471701321] [2020-12-21 23:16:56,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:56,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:56,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080385194] [2020-12-21 23:16:56,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:56,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:56,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:56,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:56,543 INFO L87 Difference]: Start difference. First operand 180 states and 279 transitions. Second operand 3 states. [2020-12-21 23:16:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:56,834 INFO L93 Difference]: Finished difference Result 360 states and 560 transitions. [2020-12-21 23:16:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:56,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:16:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:56,837 INFO L225 Difference]: With dead ends: 360 [2020-12-21 23:16:56,837 INFO L226 Difference]: Without dead ends: 188 [2020-12-21 23:16:56,838 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 23:16:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-21 23:16:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2020-12-21 23:16:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-21 23:16:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 290 transitions. [2020-12-21 23:16:56,853 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 290 transitions. Word has length 27 [2020-12-21 23:16:56,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:56,854 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 290 transitions. [2020-12-21 23:16:56,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 290 transitions. [2020-12-21 23:16:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:16:56,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:56,858 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] [2020-12-21 23:16:56,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:16:56,859 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:56,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1631613131, now seen corresponding path program 1 times [2020-12-21 23:16:56,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:56,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556646836] [2020-12-21 23:16:56,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:56,935 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 23:16:56,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556646836] [2020-12-21 23:16:56,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:56,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:56,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641397490] [2020-12-21 23:16:56,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:56,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:56,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:56,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:56,938 INFO L87 Difference]: Start difference. First operand 186 states and 290 transitions. Second operand 3 states. [2020-12-21 23:16:57,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:57,195 INFO L93 Difference]: Finished difference Result 365 states and 570 transitions. [2020-12-21 23:16:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:57,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:16:57,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:57,199 INFO L225 Difference]: With dead ends: 365 [2020-12-21 23:16:57,199 INFO L226 Difference]: Without dead ends: 187 [2020-12-21 23:16:57,200 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 23:16:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-21 23:16:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-12-21 23:16:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-21 23:16:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 291 transitions. [2020-12-21 23:16:57,220 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 291 transitions. Word has length 27 [2020-12-21 23:16:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:57,221 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 291 transitions. [2020-12-21 23:16:57,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 291 transitions. [2020-12-21 23:16:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-21 23:16:57,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:57,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:16:57,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:16:57,223 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:57,224 INFO L82 PathProgramCache]: Analyzing trace with hash -431278894, now seen corresponding path program 1 times [2020-12-21 23:16:57,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:57,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835739537] [2020-12-21 23:16:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:57,277 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 23:16:57,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835739537] [2020-12-21 23:16:57,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:57,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:57,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282014186] [2020-12-21 23:16:57,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:57,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:57,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:57,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:57,281 INFO L87 Difference]: Start difference. First operand 187 states and 291 transitions. Second operand 3 states. [2020-12-21 23:16:57,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:57,393 INFO L93 Difference]: Finished difference Result 376 states and 582 transitions. [2020-12-21 23:16:57,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:57,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-21 23:16:57,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:57,395 INFO L225 Difference]: With dead ends: 376 [2020-12-21 23:16:57,396 INFO L226 Difference]: Without dead ends: 197 [2020-12-21 23:16:57,397 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 23:16:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-21 23:16:57,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-12-21 23:16:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-21 23:16:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 289 transitions. [2020-12-21 23:16:57,424 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 289 transitions. Word has length 28 [2020-12-21 23:16:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:57,424 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 289 transitions. [2020-12-21 23:16:57,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 289 transitions. [2020-12-21 23:16:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-21 23:16:57,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:57,426 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] [2020-12-21 23:16:57,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:16:57,426 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:57,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1682017785, now seen corresponding path program 1 times [2020-12-21 23:16:57,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:57,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398695538] [2020-12-21 23:16:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:57,492 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 23:16:57,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398695538] [2020-12-21 23:16:57,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:57,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:57,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387323999] [2020-12-21 23:16:57,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:57,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:57,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:57,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:57,499 INFO L87 Difference]: Start difference. First operand 187 states and 289 transitions. Second operand 3 states. [2020-12-21 23:16:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:57,622 INFO L93 Difference]: Finished difference Result 376 states and 578 transitions. [2020-12-21 23:16:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:57,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-21 23:16:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:57,625 INFO L225 Difference]: With dead ends: 376 [2020-12-21 23:16:57,626 INFO L226 Difference]: Without dead ends: 197 [2020-12-21 23:16:57,627 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 23:16:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-21 23:16:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-12-21 23:16:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-21 23:16:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 287 transitions. [2020-12-21 23:16:57,641 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 287 transitions. Word has length 29 [2020-12-21 23:16:57,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:57,642 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 287 transitions. [2020-12-21 23:16:57,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 287 transitions. [2020-12-21 23:16:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:16:57,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:57,644 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] [2020-12-21 23:16:57,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-21 23:16:57,644 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1452653961, now seen corresponding path program 1 times [2020-12-21 23:16:57,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:57,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248671184] [2020-12-21 23:16:57,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:57,693 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 23:16:57,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248671184] [2020-12-21 23:16:57,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:57,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:57,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374113356] [2020-12-21 23:16:57,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:57,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:57,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:57,698 INFO L87 Difference]: Start difference. First operand 187 states and 287 transitions. Second operand 3 states. [2020-12-21 23:16:57,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:57,842 INFO L93 Difference]: Finished difference Result 376 states and 574 transitions. [2020-12-21 23:16:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:57,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-21 23:16:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:57,844 INFO L225 Difference]: With dead ends: 376 [2020-12-21 23:16:57,844 INFO L226 Difference]: Without dead ends: 197 [2020-12-21 23:16:57,845 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 23:16:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-21 23:16:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-12-21 23:16:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-21 23:16:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 285 transitions. [2020-12-21 23:16:57,858 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 285 transitions. Word has length 30 [2020-12-21 23:16:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:57,858 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 285 transitions. [2020-12-21 23:16:57,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 285 transitions. [2020-12-21 23:16:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:16:57,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:57,860 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] [2020-12-21 23:16:57,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-21 23:16:57,860 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:57,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1026970664, now seen corresponding path program 1 times [2020-12-21 23:16:57,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:57,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534880647] [2020-12-21 23:16:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:57,926 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 23:16:57,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534880647] [2020-12-21 23:16:57,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:57,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:16:57,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800470998] [2020-12-21 23:16:57,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:16:57,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:57,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:16:57,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:16:57,929 INFO L87 Difference]: Start difference. First operand 187 states and 285 transitions. Second operand 4 states. [2020-12-21 23:16:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:58,167 INFO L93 Difference]: Finished difference Result 572 states and 871 transitions. [2020-12-21 23:16:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 23:16:58,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-21 23:16:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:58,170 INFO L225 Difference]: With dead ends: 572 [2020-12-21 23:16:58,170 INFO L226 Difference]: Without dead ends: 393 [2020-12-21 23:16:58,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:16:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-12-21 23:16:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 357. [2020-12-21 23:16:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-12-21 23:16:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 543 transitions. [2020-12-21 23:16:58,208 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 543 transitions. Word has length 30 [2020-12-21 23:16:58,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:58,209 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 543 transitions. [2020-12-21 23:16:58,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:16:58,209 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 543 transitions. [2020-12-21 23:16:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-21 23:16:58,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:58,211 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] [2020-12-21 23:16:58,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-21 23:16:58,211 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:58,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1801233473, now seen corresponding path program 1 times [2020-12-21 23:16:58,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:58,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871968645] [2020-12-21 23:16:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:16:58,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871968645] [2020-12-21 23:16:58,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:58,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:58,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956985776] [2020-12-21 23:16:58,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:58,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:58,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:58,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:58,272 INFO L87 Difference]: Start difference. First operand 357 states and 543 transitions. Second operand 3 states. [2020-12-21 23:16:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:58,421 INFO L93 Difference]: Finished difference Result 781 states and 1197 transitions. [2020-12-21 23:16:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:58,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-21 23:16:58,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:58,426 INFO L225 Difference]: With dead ends: 781 [2020-12-21 23:16:58,427 INFO L226 Difference]: Without dead ends: 432 [2020-12-21 23:16:58,428 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 23:16:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-12-21 23:16:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 412. [2020-12-21 23:16:58,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-12-21 23:16:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 630 transitions. [2020-12-21 23:16:58,455 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 630 transitions. Word has length 33 [2020-12-21 23:16:58,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:58,459 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 630 transitions. [2020-12-21 23:16:58,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 630 transitions. [2020-12-21 23:16:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-21 23:16:58,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:58,466 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] [2020-12-21 23:16:58,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-21 23:16:58,467 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:58,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:58,467 INFO L82 PathProgramCache]: Analyzing trace with hash -979083784, now seen corresponding path program 1 times [2020-12-21 23:16:58,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:58,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458418224] [2020-12-21 23:16:58,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:58,566 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 23:16:58,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458418224] [2020-12-21 23:16:58,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:58,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:58,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315524428] [2020-12-21 23:16:58,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:58,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:58,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:58,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:58,571 INFO L87 Difference]: Start difference. First operand 412 states and 630 transitions. Second operand 3 states. [2020-12-21 23:16:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:58,716 INFO L93 Difference]: Finished difference Result 858 states and 1321 transitions. [2020-12-21 23:16:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:58,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-21 23:16:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:58,726 INFO L225 Difference]: With dead ends: 858 [2020-12-21 23:16:58,726 INFO L226 Difference]: Without dead ends: 454 [2020-12-21 23:16:58,727 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 23:16:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-12-21 23:16:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 434. [2020-12-21 23:16:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-12-21 23:16:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 670 transitions. [2020-12-21 23:16:58,749 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 670 transitions. Word has length 34 [2020-12-21 23:16:58,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:58,750 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 670 transitions. [2020-12-21 23:16:58,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 670 transitions. [2020-12-21 23:16:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-21 23:16:58,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:58,753 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] [2020-12-21 23:16:58,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-21 23:16:58,753 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:58,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1380253332, now seen corresponding path program 1 times [2020-12-21 23:16:58,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:58,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300722379] [2020-12-21 23:16:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:58,849 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 23:16:58,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300722379] [2020-12-21 23:16:58,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:58,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:58,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032397771] [2020-12-21 23:16:58,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:58,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:58,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:58,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:58,854 INFO L87 Difference]: Start difference. First operand 434 states and 670 transitions. Second operand 3 states. [2020-12-21 23:16:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:59,028 INFO L93 Difference]: Finished difference Result 925 states and 1433 transitions. [2020-12-21 23:16:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:59,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-21 23:16:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:59,032 INFO L225 Difference]: With dead ends: 925 [2020-12-21 23:16:59,033 INFO L226 Difference]: Without dead ends: 499 [2020-12-21 23:16:59,034 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 23:16:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-12-21 23:16:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 489. [2020-12-21 23:16:59,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-21 23:16:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 760 transitions. [2020-12-21 23:16:59,057 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 760 transitions. Word has length 40 [2020-12-21 23:16:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:59,057 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 760 transitions. [2020-12-21 23:16:59,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 760 transitions. [2020-12-21 23:16:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-21 23:16:59,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:59,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:16:59,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-21 23:16:59,059 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:59,059 INFO L82 PathProgramCache]: Analyzing trace with hash -168828106, now seen corresponding path program 1 times [2020-12-21 23:16:59,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:59,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691345952] [2020-12-21 23:16:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:59,098 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 23:16:59,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691345952] [2020-12-21 23:16:59,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:59,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:59,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076950568] [2020-12-21 23:16:59,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:59,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:59,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:59,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:59,100 INFO L87 Difference]: Start difference. First operand 489 states and 760 transitions. Second operand 3 states. [2020-12-21 23:16:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:59,255 INFO L93 Difference]: Finished difference Result 992 states and 1545 transitions. [2020-12-21 23:16:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:59,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-21 23:16:59,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:59,259 INFO L225 Difference]: With dead ends: 992 [2020-12-21 23:16:59,259 INFO L226 Difference]: Without dead ends: 511 [2020-12-21 23:16:59,260 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 23:16:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-12-21 23:16:59,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 501. [2020-12-21 23:16:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-12-21 23:16:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 782 transitions. [2020-12-21 23:16:59,286 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 782 transitions. Word has length 41 [2020-12-21 23:16:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:59,286 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 782 transitions. [2020-12-21 23:16:59,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 782 transitions. [2020-12-21 23:16:59,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-21 23:16:59,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:59,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-21 23:16:59,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-21 23:16:59,289 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:59,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2051620392, now seen corresponding path program 1 times [2020-12-21 23:16:59,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:59,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850871306] [2020-12-21 23:16:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:16:59,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850871306] [2020-12-21 23:16:59,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:59,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:59,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456035819] [2020-12-21 23:16:59,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:59,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:59,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:59,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:59,381 INFO L87 Difference]: Start difference. First operand 501 states and 782 transitions. Second operand 3 states. [2020-12-21 23:16:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:59,544 INFO L93 Difference]: Finished difference Result 1008 states and 1575 transitions. [2020-12-21 23:16:59,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:59,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-21 23:16:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:59,549 INFO L225 Difference]: With dead ends: 1008 [2020-12-21 23:16:59,549 INFO L226 Difference]: Without dead ends: 515 [2020-12-21 23:16:59,550 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 23:16:59,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-12-21 23:16:59,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 501. [2020-12-21 23:16:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-12-21 23:16:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 778 transitions. [2020-12-21 23:16:59,579 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 778 transitions. Word has length 61 [2020-12-21 23:16:59,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:59,579 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 778 transitions. [2020-12-21 23:16:59,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 778 transitions. [2020-12-21 23:16:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-21 23:16:59,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:59,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-21 23:16:59,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-21 23:16:59,582 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:59,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:59,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1852313784, now seen corresponding path program 1 times [2020-12-21 23:16:59,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:59,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8197022] [2020-12-21 23:16:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:16:59,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8197022] [2020-12-21 23:16:59,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:59,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:59,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286164806] [2020-12-21 23:16:59,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:59,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:59,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:59,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:59,627 INFO L87 Difference]: Start difference. First operand 501 states and 778 transitions. Second operand 3 states. [2020-12-21 23:16:59,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:59,778 INFO L93 Difference]: Finished difference Result 1032 states and 1601 transitions. [2020-12-21 23:16:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:59,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-21 23:16:59,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:59,781 INFO L225 Difference]: With dead ends: 1032 [2020-12-21 23:16:59,781 INFO L226 Difference]: Without dead ends: 539 [2020-12-21 23:16:59,783 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 23:16:59,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-12-21 23:16:59,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2020-12-21 23:16:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-12-21 23:16:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 832 transitions. [2020-12-21 23:16:59,808 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 832 transitions. Word has length 62 [2020-12-21 23:16:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:16:59,808 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 832 transitions. [2020-12-21 23:16:59,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:16:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 832 transitions. [2020-12-21 23:16:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-21 23:16:59,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:16:59,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-12-21 23:16:59,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-21 23:16:59,810 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:16:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:16:59,810 INFO L82 PathProgramCache]: Analyzing trace with hash 932372046, now seen corresponding path program 1 times [2020-12-21 23:16:59,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:16:59,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851030871] [2020-12-21 23:16:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:16:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:16:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-21 23:16:59,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851030871] [2020-12-21 23:16:59,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:16:59,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:16:59,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426580397] [2020-12-21 23:16:59,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:16:59,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:16:59,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:16:59,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:16:59,847 INFO L87 Difference]: Start difference. First operand 539 states and 832 transitions. Second operand 3 states. [2020-12-21 23:16:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:16:59,977 INFO L93 Difference]: Finished difference Result 1112 states and 1713 transitions. [2020-12-21 23:16:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:16:59,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-21 23:16:59,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:16:59,981 INFO L225 Difference]: With dead ends: 1112 [2020-12-21 23:16:59,982 INFO L226 Difference]: Without dead ends: 581 [2020-12-21 23:16:59,985 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 23:16:59,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-12-21 23:17:00,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2020-12-21 23:17:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-21 23:17:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 874 transitions. [2020-12-21 23:17:00,012 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 874 transitions. Word has length 62 [2020-12-21 23:17:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:00,012 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 874 transitions. [2020-12-21 23:17:00,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 874 transitions. [2020-12-21 23:17:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-21 23:17:00,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:00,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-12-21 23:17:00,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-21 23:17:00,014 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:00,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:00,014 INFO L82 PathProgramCache]: Analyzing trace with hash -394487435, now seen corresponding path program 1 times [2020-12-21 23:17:00,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:00,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276466369] [2020-12-21 23:17:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-21 23:17:00,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276466369] [2020-12-21 23:17:00,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:00,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:00,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948351393] [2020-12-21 23:17:00,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:00,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:00,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:00,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:00,066 INFO L87 Difference]: Start difference. First operand 571 states and 874 transitions. Second operand 3 states. [2020-12-21 23:17:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:00,221 INFO L93 Difference]: Finished difference Result 1144 states and 1750 transitions. [2020-12-21 23:17:00,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:00,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-21 23:17:00,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:00,225 INFO L225 Difference]: With dead ends: 1144 [2020-12-21 23:17:00,225 INFO L226 Difference]: Without dead ends: 581 [2020-12-21 23:17:00,226 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 23:17:00,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-12-21 23:17:00,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2020-12-21 23:17:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-21 23:17:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 869 transitions. [2020-12-21 23:17:00,256 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 869 transitions. Word has length 63 [2020-12-21 23:17:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:00,256 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 869 transitions. [2020-12-21 23:17:00,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:00,256 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 869 transitions. [2020-12-21 23:17:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-21 23:17:00,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:00,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-21 23:17:00,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-21 23:17:00,258 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:00,259 INFO L82 PathProgramCache]: Analyzing trace with hash 408970087, now seen corresponding path program 1 times [2020-12-21 23:17:00,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:00,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031480049] [2020-12-21 23:17:00,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:00,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031480049] [2020-12-21 23:17:00,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:00,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:00,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971695217] [2020-12-21 23:17:00,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:00,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:00,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:00,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:00,325 INFO L87 Difference]: Start difference. First operand 571 states and 869 transitions. Second operand 3 states. [2020-12-21 23:17:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:00,472 INFO L93 Difference]: Finished difference Result 1181 states and 1794 transitions. [2020-12-21 23:17:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:00,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-21 23:17:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:00,476 INFO L225 Difference]: With dead ends: 1181 [2020-12-21 23:17:00,476 INFO L226 Difference]: Without dead ends: 618 [2020-12-21 23:17:00,478 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 23:17:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-12-21 23:17:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 614. [2020-12-21 23:17:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-12-21 23:17:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 930 transitions. [2020-12-21 23:17:00,506 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 930 transitions. Word has length 74 [2020-12-21 23:17:00,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:00,506 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 930 transitions. [2020-12-21 23:17:00,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 930 transitions. [2020-12-21 23:17:00,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-21 23:17:00,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:00,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-21 23:17:00,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-21 23:17:00,508 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:00,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:00,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1646674903, now seen corresponding path program 1 times [2020-12-21 23:17:00,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:00,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410475752] [2020-12-21 23:17:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:00,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410475752] [2020-12-21 23:17:00,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:00,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:00,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509199701] [2020-12-21 23:17:00,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:00,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:00,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:00,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:00,550 INFO L87 Difference]: Start difference. First operand 614 states and 930 transitions. Second operand 3 states. [2020-12-21 23:17:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:00,702 INFO L93 Difference]: Finished difference Result 1224 states and 1852 transitions. [2020-12-21 23:17:00,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:00,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-21 23:17:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:00,706 INFO L225 Difference]: With dead ends: 1224 [2020-12-21 23:17:00,706 INFO L226 Difference]: Without dead ends: 618 [2020-12-21 23:17:00,707 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 23:17:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-12-21 23:17:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 614. [2020-12-21 23:17:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-12-21 23:17:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 927 transitions. [2020-12-21 23:17:00,759 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 927 transitions. Word has length 75 [2020-12-21 23:17:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:00,761 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 927 transitions. [2020-12-21 23:17:00,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 927 transitions. [2020-12-21 23:17:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-21 23:17:00,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:00,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:00,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-21 23:17:00,763 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:00,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1588112316, now seen corresponding path program 1 times [2020-12-21 23:17:00,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:00,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845272032] [2020-12-21 23:17:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-21 23:17:00,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845272032] [2020-12-21 23:17:00,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:00,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:00,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764198566] [2020-12-21 23:17:00,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:00,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:00,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:00,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:00,810 INFO L87 Difference]: Start difference. First operand 614 states and 927 transitions. Second operand 3 states. [2020-12-21 23:17:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:00,942 INFO L93 Difference]: Finished difference Result 1256 states and 1895 transitions. [2020-12-21 23:17:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:00,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-21 23:17:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:00,946 INFO L225 Difference]: With dead ends: 1256 [2020-12-21 23:17:00,946 INFO L226 Difference]: Without dead ends: 650 [2020-12-21 23:17:00,947 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 23:17:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-12-21 23:17:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 642. [2020-12-21 23:17:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-12-21 23:17:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 961 transitions. [2020-12-21 23:17:00,982 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 961 transitions. Word has length 84 [2020-12-21 23:17:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:00,983 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 961 transitions. [2020-12-21 23:17:00,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 961 transitions. [2020-12-21 23:17:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-21 23:17:00,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:00,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-21 23:17:00,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-21 23:17:00,985 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash 474906507, now seen corresponding path program 1 times [2020-12-21 23:17:00,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:00,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065154882] [2020-12-21 23:17:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-21 23:17:01,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065154882] [2020-12-21 23:17:01,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:01,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:01,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659683897] [2020-12-21 23:17:01,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:01,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:01,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:01,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:01,027 INFO L87 Difference]: Start difference. First operand 642 states and 961 transitions. Second operand 3 states. [2020-12-21 23:17:01,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:01,161 INFO L93 Difference]: Finished difference Result 1284 states and 1922 transitions. [2020-12-21 23:17:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:01,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-21 23:17:01,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:01,165 INFO L225 Difference]: With dead ends: 1284 [2020-12-21 23:17:01,165 INFO L226 Difference]: Without dead ends: 650 [2020-12-21 23:17:01,166 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 23:17:01,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-12-21 23:17:01,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 642. [2020-12-21 23:17:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-12-21 23:17:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 954 transitions. [2020-12-21 23:17:01,196 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 954 transitions. Word has length 85 [2020-12-21 23:17:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:01,197 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 954 transitions. [2020-12-21 23:17:01,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 954 transitions. [2020-12-21 23:17:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-21 23:17:01,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:01,199 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-21 23:17:01,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-21 23:17:01,199 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:01,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash -282694335, now seen corresponding path program 1 times [2020-12-21 23:17:01,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:01,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501659801] [2020-12-21 23:17:01,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-21 23:17:01,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501659801] [2020-12-21 23:17:01,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:01,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:01,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71360995] [2020-12-21 23:17:01,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:01,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:01,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:01,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:01,270 INFO L87 Difference]: Start difference. First operand 642 states and 954 transitions. Second operand 3 states. [2020-12-21 23:17:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:01,413 INFO L93 Difference]: Finished difference Result 1316 states and 1949 transitions. [2020-12-21 23:17:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:01,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-21 23:17:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:01,417 INFO L225 Difference]: With dead ends: 1316 [2020-12-21 23:17:01,417 INFO L226 Difference]: Without dead ends: 682 [2020-12-21 23:17:01,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:01,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-12-21 23:17:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 678. [2020-12-21 23:17:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-12-21 23:17:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 998 transitions. [2020-12-21 23:17:01,449 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 998 transitions. Word has length 89 [2020-12-21 23:17:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:01,450 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 998 transitions. [2020-12-21 23:17:01,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 998 transitions. [2020-12-21 23:17:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-21 23:17:01,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:01,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-21 23:17:01,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-21 23:17:01,452 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:01,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:01,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1446327258, now seen corresponding path program 1 times [2020-12-21 23:17:01,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:01,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770975312] [2020-12-21 23:17:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-21 23:17:01,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770975312] [2020-12-21 23:17:01,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:01,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:01,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47697174] [2020-12-21 23:17:01,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:01,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:01,491 INFO L87 Difference]: Start difference. First operand 678 states and 998 transitions. Second operand 3 states. [2020-12-21 23:17:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:01,633 INFO L93 Difference]: Finished difference Result 1352 states and 1988 transitions. [2020-12-21 23:17:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:01,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-21 23:17:01,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:01,639 INFO L225 Difference]: With dead ends: 1352 [2020-12-21 23:17:01,639 INFO L226 Difference]: Without dead ends: 682 [2020-12-21 23:17:01,641 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 23:17:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-12-21 23:17:01,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 678. [2020-12-21 23:17:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-12-21 23:17:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 993 transitions. [2020-12-21 23:17:01,671 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 993 transitions. Word has length 90 [2020-12-21 23:17:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:01,672 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 993 transitions. [2020-12-21 23:17:01,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 993 transitions. [2020-12-21 23:17:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-21 23:17:01,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:01,674 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-12-21 23:17:01,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-21 23:17:01,674 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1209412422, now seen corresponding path program 1 times [2020-12-21 23:17:01,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:01,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707588002] [2020-12-21 23:17:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-21 23:17:01,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707588002] [2020-12-21 23:17:01,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:01,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:01,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931818582] [2020-12-21 23:17:01,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:01,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:01,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:01,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:01,724 INFO L87 Difference]: Start difference. First operand 678 states and 993 transitions. Second operand 3 states. [2020-12-21 23:17:01,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:01,809 INFO L93 Difference]: Finished difference Result 2004 states and 2929 transitions. [2020-12-21 23:17:01,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:01,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-21 23:17:01,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:01,816 INFO L225 Difference]: With dead ends: 2004 [2020-12-21 23:17:01,816 INFO L226 Difference]: Without dead ends: 1334 [2020-12-21 23:17:01,818 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 23:17:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-12-21 23:17:01,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 680. [2020-12-21 23:17:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-12-21 23:17:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 995 transitions. [2020-12-21 23:17:01,866 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 995 transitions. Word has length 101 [2020-12-21 23:17:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:01,866 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 995 transitions. [2020-12-21 23:17:01,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:01,867 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 995 transitions. [2020-12-21 23:17:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-21 23:17:01,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:01,869 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-12-21 23:17:01,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-21 23:17:01,869 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:01,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:01,870 INFO L82 PathProgramCache]: Analyzing trace with hash -70451256, now seen corresponding path program 1 times [2020-12-21 23:17:01,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:01,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765206448] [2020-12-21 23:17:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-21 23:17:01,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765206448] [2020-12-21 23:17:01,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:01,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:01,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572234055] [2020-12-21 23:17:01,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:01,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:01,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:01,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:01,931 INFO L87 Difference]: Start difference. First operand 680 states and 995 transitions. Second operand 3 states. [2020-12-21 23:17:01,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:01,972 INFO L93 Difference]: Finished difference Result 1363 states and 1993 transitions. [2020-12-21 23:17:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:01,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-21 23:17:01,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:01,976 INFO L225 Difference]: With dead ends: 1363 [2020-12-21 23:17:01,976 INFO L226 Difference]: Without dead ends: 691 [2020-12-21 23:17:01,977 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 23:17:01,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-12-21 23:17:02,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 678. [2020-12-21 23:17:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-12-21 23:17:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 988 transitions. [2020-12-21 23:17:02,010 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 988 transitions. Word has length 101 [2020-12-21 23:17:02,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:02,010 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 988 transitions. [2020-12-21 23:17:02,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:02,010 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 988 transitions. [2020-12-21 23:17:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-21 23:17:02,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:02,012 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-12-21 23:17:02,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-21 23:17:02,013 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:02,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1334267025, now seen corresponding path program 1 times [2020-12-21 23:17:02,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:02,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25951482] [2020-12-21 23:17:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-21 23:17:02,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25951482] [2020-12-21 23:17:02,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:02,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:02,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892404959] [2020-12-21 23:17:02,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:02,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:02,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:02,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:02,067 INFO L87 Difference]: Start difference. First operand 678 states and 988 transitions. Second operand 3 states. [2020-12-21 23:17:02,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:02,163 INFO L93 Difference]: Finished difference Result 1989 states and 2896 transitions. [2020-12-21 23:17:02,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:02,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-21 23:17:02,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:02,173 INFO L225 Difference]: With dead ends: 1989 [2020-12-21 23:17:02,173 INFO L226 Difference]: Without dead ends: 1319 [2020-12-21 23:17:02,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-12-21 23:17:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2020-12-21 23:17:02,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-12-21 23:17:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1903 transitions. [2020-12-21 23:17:02,262 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1903 transitions. Word has length 102 [2020-12-21 23:17:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:02,262 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1903 transitions. [2020-12-21 23:17:02,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1903 transitions. [2020-12-21 23:17:02,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-21 23:17:02,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:02,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-12-21 23:17:02,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-21 23:17:02,266 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:02,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:02,267 INFO L82 PathProgramCache]: Analyzing trace with hash 747461011, now seen corresponding path program 1 times [2020-12-21 23:17:02,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:02,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552535043] [2020-12-21 23:17:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-21 23:17:02,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-21 23:17:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-21 23:17:02,338 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-21 23:17:02,437 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-21 23:17:02,438 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-21 23:17:02,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-21 23:17:02,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:17:02 BoogieIcfgContainer [2020-12-21 23:17:02,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-21 23:17:02,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-21 23:17:02,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-21 23:17:02,603 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-21 23:17:02,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:16:55" (3/4) ... [2020-12-21 23:17:02,606 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-21 23:17:02,707 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/openssl-simplified/s3_srvr_13.cil.c-witness.graphml [2020-12-21 23:17:02,707 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-21 23:17:02,709 INFO L168 Benchmark]: Toolchain (without parser) took 9615.79 ms. Allocated memory was 159.4 MB in the beginning and 291.5 MB in the end (delta: 132.1 MB). Free memory was 133.8 MB in the beginning and 241.5 MB in the end (delta: -107.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:02,710 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:17:02,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.92 ms. Allocated memory is still 159.4 MB. Free memory was 133.6 MB in the beginning and 117.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:02,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.90 ms. Allocated memory is still 159.4 MB. Free memory was 117.8 MB in the beginning and 140.6 MB in the end (delta: -22.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:02,711 INFO L168 Benchmark]: Boogie Preprocessor took 83.05 ms. Allocated memory is still 159.4 MB. Free memory was 140.2 MB in the beginning and 138.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:02,711 INFO L168 Benchmark]: RCFGBuilder took 1203.74 ms. Allocated memory is still 159.4 MB. Free memory was 138.0 MB in the beginning and 123.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 43.6 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:02,712 INFO L168 Benchmark]: TraceAbstraction took 7550.55 ms. Allocated memory was 159.4 MB in the beginning and 291.5 MB in the end (delta: 132.1 MB). Free memory was 123.2 MB in the beginning and 254.1 MB in the end (delta: -130.9 MB). Peak memory consumption was 159.6 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:02,712 INFO L168 Benchmark]: Witness Printer took 104.71 ms. Allocated memory is still 291.5 MB. Free memory was 254.1 MB in the beginning and 241.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:02,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 548.92 ms. Allocated memory is still 159.4 MB. Free memory was 133.6 MB in the beginning and 117.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 110.90 ms. Allocated memory is still 159.4 MB. Free memory was 117.8 MB in the beginning and 140.6 MB in the end (delta: -22.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 83.05 ms. Allocated memory is still 159.4 MB. Free memory was 140.2 MB in the beginning and 138.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1203.74 ms. Allocated memory is still 159.4 MB. Free memory was 138.0 MB in the beginning and 123.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 43.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7550.55 ms. Allocated memory was 159.4 MB in the beginning and 291.5 MB in the end (delta: 132.1 MB). Free memory was 123.2 MB in the beginning and 254.1 MB in the end (delta: -130.9 MB). Peak memory consumption was 159.6 MB. Max. memory is 8.0 GB. * Witness Printer took 104.71 ms. Allocated memory is still 291.5 MB. Free memory was 254.1 MB in the beginning and 241.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 644]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L649] int s ; [L650] int tmp ; [L654] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength ; [L42] int s__session__cipher ; [L43] int buf ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp ; [L47] int cb ; [L48] long num1 = __VERIFIER_nondet_long() ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int tmp___10 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] skip = 1 [L317] s__state = 8528 [L318] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L322] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L323] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L325] __cil_tmp57 = (unsigned long )s__options [L326] COND TRUE __cil_tmp57 + 2097152UL [L327] s__s3__tmp__use_rsa_tmp = 1 [L332] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L359] ret = __VERIFIER_nondet_int() [L360] COND FALSE !(blastFlag == 6) [L363] COND FALSE !(ret <= 0) [L380] s__state = 8544 [L381] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE state == 8528 [L605] COND TRUE s__state == 8544 [L606] COND TRUE tmp___7 != 1024 [L607] COND TRUE tmp___7 != 512 [L608] COND TRUE __cil_tmp58 != 4294967294 [L609] COND TRUE l != 4294967266 [L644] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 153 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.3s, OverallIterations: 26, TraceHistogramMax: 4, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4418 SDtfs, 4358 SDslu, 1315 SDs, 0 SdLazy, 2050 SolverSat, 916 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1317occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 25 MinimizatonAttempts, 865 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1523 NumberOfCodeBlocks, 1523 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1396 ConstructedInterpolants, 0 QuantifiedInterpolants, 183768 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 646/646 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 incorrect! Received shutdown request...