/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:18:13,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:18:13,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:18:13,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:18:13,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:18:13,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:18:13,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:18:13,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:18:13,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:18:13,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:18:13,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:18:13,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:18:13,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:18:13,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:18:13,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:18:13,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:18:13,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:18:13,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:18:13,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:18:13,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:18:13,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:18:13,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:18:13,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:18:13,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:18:13,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:18:13,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:18:13,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:18:13,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:18:13,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:18:13,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:18:13,433 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:18:13,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:18:13,434 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:18:13,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:18:13,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:18:13,434 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:18:13,434 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:18:13,435 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:18:13,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:18:13,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:18:13,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:18:13,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:18:13,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:18:13,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:18:13,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:18:13,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:18:13,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:18:13,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:18:13,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:18:13,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:18:13,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:18:13,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:18:13,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:18:13,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:18:13,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:18:13,894 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:18:13,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2020-12-22 19:18:13,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81d2de527/7be994ebec85426daf244d63920592c0/FLAG399b8e001 [2020-12-22 19:18:14,767 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:18:14,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2020-12-22 19:18:14,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81d2de527/7be994ebec85426daf244d63920592c0/FLAG399b8e001 [2020-12-22 19:18:15,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81d2de527/7be994ebec85426daf244d63920592c0 [2020-12-22 19:18:15,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:18:15,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:18:15,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:18:15,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:18:15,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:18:15,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e03b7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15, skipping insertion in model container [2020-12-22 19:18:15,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:18:15,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:18:15,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:18:15,399 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:18:15,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:18:15,441 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:18:15,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15 WrapperNode [2020-12-22 19:18:15,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:18:15,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:18:15,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:18:15,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:18:15,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:18:15,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:18:15,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:18:15,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:18:15,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... [2020-12-22 19:18:15,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:18:15,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:18:15,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:18:15,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:18:15,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:18:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:18:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:18:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:18:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:18:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:18:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:18:16,086 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:18:16,086 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 19:18:16,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:18:16 BoogieIcfgContainer [2020-12-22 19:18:16,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:18:16,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:18:16,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:18:16,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:18:16,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:18:15" (1/3) ... [2020-12-22 19:18:16,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f6600e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:18:16, skipping insertion in model container [2020-12-22 19:18:16,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:18:15" (2/3) ... [2020-12-22 19:18:16,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f6600e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:18:16, skipping insertion in model container [2020-12-22 19:18:16,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:18:16" (3/3) ... [2020-12-22 19:18:16,110 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration.c [2020-12-22 19:18:16,123 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:18:16,130 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 19:18:16,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 19:18:16,200 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:18:16,200 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:18:16,200 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:18:16,201 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:18:16,201 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:18:16,201 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:18:16,201 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:18:16,201 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:18:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-22 19:18:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:18:16,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:16,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:18:16,236 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:16,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:16,245 INFO L82 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2020-12-22 19:18:16,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:16,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890337615] [2020-12-22 19:18:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:16,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890337615] [2020-12-22 19:18:16,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:16,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:18:16,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449826466] [2020-12-22 19:18:16,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:16,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:16,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:16,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:16,591 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-12-22 19:18:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:16,681 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-12-22 19:18:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:16,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 19:18:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:16,695 INFO L225 Difference]: With dead ends: 59 [2020-12-22 19:18:16,695 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 19:18:16,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 19:18:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2020-12-22 19:18:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 19:18:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-12-22 19:18:16,741 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 5 [2020-12-22 19:18:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:16,742 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-12-22 19:18:16,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-12-22 19:18:16,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:18:16,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:16,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:18:16,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:18:16,744 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:16,745 INFO L82 PathProgramCache]: Analyzing trace with hash 889631015, now seen corresponding path program 1 times [2020-12-22 19:18:16,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:16,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832746653] [2020-12-22 19:18:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:16,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832746653] [2020-12-22 19:18:16,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:16,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:16,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734525892] [2020-12-22 19:18:16,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:16,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:16,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:16,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:16,782 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 3 states. [2020-12-22 19:18:16,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:16,867 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-12-22 19:18:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:16,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 19:18:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:16,869 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:18:16,870 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:18:16,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:18:16,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2020-12-22 19:18:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:18:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 19:18:16,877 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 19:18:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:16,878 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 19:18:16,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 19:18:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:18:16,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:16,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:18:16,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:18:16,879 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash 889666573, now seen corresponding path program 1 times [2020-12-22 19:18:16,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:16,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215267608] [2020-12-22 19:18:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:16,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215267608] [2020-12-22 19:18:16,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:16,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:16,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772838480] [2020-12-22 19:18:16,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:16,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:16,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:16,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:16,948 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-22 19:18:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:17,038 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-12-22 19:18:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:17,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 19:18:17,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:17,042 INFO L225 Difference]: With dead ends: 32 [2020-12-22 19:18:17,043 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 19:18:17,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:17,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 19:18:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 19:18:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 19:18:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-12-22 19:18:17,059 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2020-12-22 19:18:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:17,061 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-12-22 19:18:17,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-12-22 19:18:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:18:17,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:17,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:18:17,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:18:17,067 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:17,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:17,068 INFO L82 PathProgramCache]: Analyzing trace with hash 889666574, now seen corresponding path program 1 times [2020-12-22 19:18:17,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:17,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453826544] [2020-12-22 19:18:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:17,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453826544] [2020-12-22 19:18:17,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:17,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:17,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853350293] [2020-12-22 19:18:17,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:17,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:17,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:17,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:17,159 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2020-12-22 19:18:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:17,287 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-12-22 19:18:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:18:17,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 19:18:17,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:17,291 INFO L225 Difference]: With dead ends: 55 [2020-12-22 19:18:17,291 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 19:18:17,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 19:18:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2020-12-22 19:18:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:18:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 19:18:17,301 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 19:18:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:17,302 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 19:18:17,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 19:18:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:18:17,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:17,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:17,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:18:17,304 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:17,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2020-12-22 19:18:17,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:17,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353883183] [2020-12-22 19:18:17,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:17,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353883183] [2020-12-22 19:18:17,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:17,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:18:17,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596321800] [2020-12-22 19:18:17,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:17,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:17,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:17,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:17,395 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-22 19:18:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:17,488 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-12-22 19:18:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:17,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 19:18:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:17,490 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:18:17,490 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 19:18:17,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 19:18:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2020-12-22 19:18:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 19:18:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-12-22 19:18:17,496 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 7 [2020-12-22 19:18:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:17,497 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-12-22 19:18:17,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-12-22 19:18:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:18:17,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:17,498 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:17,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:18:17,498 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:17,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1480744241, now seen corresponding path program 1 times [2020-12-22 19:18:17,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:17,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309400773] [2020-12-22 19:18:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:17,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309400773] [2020-12-22 19:18:17,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767420768] [2020-12-22 19:18:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:17,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:18:17,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:18:17,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:17,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-12-22 19:18:17,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220765800] [2020-12-22 19:18:17,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:18:17,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:17,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:18:17,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:17,770 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-12-22 19:18:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:17,897 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2020-12-22 19:18:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:18:17,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 19:18:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:17,899 INFO L225 Difference]: With dead ends: 75 [2020-12-22 19:18:17,899 INFO L226 Difference]: Without dead ends: 75 [2020-12-22 19:18:17,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:18:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-22 19:18:17,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 39. [2020-12-22 19:18:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 19:18:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-12-22 19:18:17,905 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 10 [2020-12-22 19:18:17,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:17,906 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-12-22 19:18:17,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:18:17,906 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-12-22 19:18:17,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:18:17,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:17,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:18,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 19:18:18,124 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:18,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1361088610, now seen corresponding path program 1 times [2020-12-22 19:18:18,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:18,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615383957] [2020-12-22 19:18:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:18,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615383957] [2020-12-22 19:18:18,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:18,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:18:18,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531493325] [2020-12-22 19:18:18,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:18:18,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:18,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:18:18,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:18,197 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 3 states. [2020-12-22 19:18:18,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:18,226 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-12-22 19:18:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:18,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-22 19:18:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:18,228 INFO L225 Difference]: With dead ends: 37 [2020-12-22 19:18:18,228 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 19:18:18,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:18:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 19:18:18,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 19:18:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 19:18:18,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 19:18:18,240 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 12 [2020-12-22 19:18:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:18,240 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 19:18:18,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:18:18,240 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 19:18:18,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:18:18,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:18,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:18,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:18:18,242 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:18,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:18,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1361088609, now seen corresponding path program 1 times [2020-12-22 19:18:18,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:18,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540352781] [2020-12-22 19:18:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:18,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540352781] [2020-12-22 19:18:18,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:18:18,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:18:18,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33707479] [2020-12-22 19:18:18,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:18,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:18,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:18,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:18,350 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 19:18:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:18,424 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-12-22 19:18:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:18:18,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 19:18:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:18,425 INFO L225 Difference]: With dead ends: 42 [2020-12-22 19:18:18,426 INFO L226 Difference]: Without dead ends: 42 [2020-12-22 19:18:18,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-22 19:18:18,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-12-22 19:18:18,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 19:18:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-22 19:18:18,445 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 12 [2020-12-22 19:18:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:18,445 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-22 19:18:18,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-22 19:18:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:18:18,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:18,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:18,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:18:18,450 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:18,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:18,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1343012932, now seen corresponding path program 1 times [2020-12-22 19:18:18,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:18,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120408949] [2020-12-22 19:18:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:18,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120408949] [2020-12-22 19:18:18,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968554312] [2020-12-22 19:18:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:18,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 19:18:18,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:18,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:18,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 19:18:18,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898611097] [2020-12-22 19:18:18,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:18:18,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:18,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:18:18,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:18,656 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2020-12-22 19:18:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:18,713 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-12-22 19:18:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:18,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 19:18:18,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:18,714 INFO L225 Difference]: With dead ends: 74 [2020-12-22 19:18:18,714 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 19:18:18,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:18:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 19:18:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2020-12-22 19:18:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:18:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-12-22 19:18:18,719 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 18 [2020-12-22 19:18:18,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:18,720 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-12-22 19:18:18,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:18:18,720 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-12-22 19:18:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:18:18,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:18,721 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:18,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:18,935 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:18,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1315219428, now seen corresponding path program 1 times [2020-12-22 19:18:18,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:18,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522056637] [2020-12-22 19:18:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:18,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522056637] [2020-12-22 19:18:18,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139600591] [2020-12-22 19:18:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:19,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:18:19,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:19,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:19,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-22 19:18:19,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842439382] [2020-12-22 19:18:19,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:18:19,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:19,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:18:19,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:19,111 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-12-22 19:18:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:19,237 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-12-22 19:18:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:18:19,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-22 19:18:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:19,239 INFO L225 Difference]: With dead ends: 53 [2020-12-22 19:18:19,239 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 19:18:19,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:18:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 19:18:19,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-12-22 19:18:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:18:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-12-22 19:18:19,244 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 19 [2020-12-22 19:18:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:19,244 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-12-22 19:18:19,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:18:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-12-22 19:18:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:18:19,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:19,246 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:19,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:18:19,460 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1532050453, now seen corresponding path program 1 times [2020-12-22 19:18:19,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:19,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723340366] [2020-12-22 19:18:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:18:19,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723340366] [2020-12-22 19:18:19,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564159180] [2020-12-22 19:18:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:19,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:18:19,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:18:19,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:19,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-12-22 19:18:19,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495724994] [2020-12-22 19:18:19,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:19,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:19,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:19,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:19,621 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 4 states. [2020-12-22 19:18:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:19,666 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-12-22 19:18:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:19,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-22 19:18:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:19,668 INFO L225 Difference]: With dead ends: 77 [2020-12-22 19:18:19,668 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 19:18:19,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:18:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 19:18:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2020-12-22 19:18:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 19:18:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-22 19:18:19,673 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 22 [2020-12-22 19:18:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:19,673 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-22 19:18:19,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-22 19:18:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:18:19,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:19,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:19,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:19,890 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash -248923733, now seen corresponding path program 1 times [2020-12-22 19:18:19,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:19,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619326611] [2020-12-22 19:18:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:18:20,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619326611] [2020-12-22 19:18:20,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702593516] [2020-12-22 19:18:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:20,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 19:18:20,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:20,129 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:20,131 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:18:20,137 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:20,164 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:18:20,173 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:18:20,173 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-12-22 19:18:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:18:20,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:20,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-12-22 19:18:20,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114364471] [2020-12-22 19:18:20,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:18:20,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:20,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:18:20,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:20,296 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 7 states. [2020-12-22 19:18:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:20,428 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-12-22 19:18:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:18:20,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-22 19:18:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:20,432 INFO L225 Difference]: With dead ends: 76 [2020-12-22 19:18:20,432 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 19:18:20,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:18:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 19:18:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2020-12-22 19:18:20,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 19:18:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-12-22 19:18:20,442 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 23 [2020-12-22 19:18:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:20,443 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-12-22 19:18:20,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:18:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-12-22 19:18:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:18:20,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:20,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:20,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 19:18:20,661 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:20,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:20,661 INFO L82 PathProgramCache]: Analyzing trace with hash 873249211, now seen corresponding path program 2 times [2020-12-22 19:18:20,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:20,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717078122] [2020-12-22 19:18:20,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:20,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717078122] [2020-12-22 19:18:20,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797965063] [2020-12-22 19:18:20,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:20,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:20,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:20,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:18:20,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:20,845 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_11|], 1=[|v_#valid_20|]} [2020-12-22 19:18:20,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:20,851 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:18:20,853 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:20,863 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:20,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:20,873 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-12-22 19:18:20,874 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:20,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:20,909 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:18:20,909 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2020-12-22 19:18:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:18:21,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:21,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2020-12-22 19:18:21,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404415914] [2020-12-22 19:18:21,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:18:21,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:21,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:18:21,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:18:21,111 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 5 states. [2020-12-22 19:18:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:21,181 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-12-22 19:18:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:18:21,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-12-22 19:18:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:21,183 INFO L225 Difference]: With dead ends: 52 [2020-12-22 19:18:21,183 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 19:18:21,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:18:21,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 19:18:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-12-22 19:18:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 19:18:21,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-12-22 19:18:21,202 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 24 [2020-12-22 19:18:21,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:21,202 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-12-22 19:18:21,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:18:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-12-22 19:18:21,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:18:21,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:21,203 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:21,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:21,419 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:21,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:21,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1828588012, now seen corresponding path program 2 times [2020-12-22 19:18:21,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:21,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754669655] [2020-12-22 19:18:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:21,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754669655] [2020-12-22 19:18:21,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105706710] [2020-12-22 19:18:21,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:21,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:18:21,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:21,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:18:21,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:21,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:21,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-12-22 19:18:21,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702863226] [2020-12-22 19:18:21,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:18:21,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:21,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:18:21,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:18:21,691 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 11 states. [2020-12-22 19:18:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:22,038 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2020-12-22 19:18:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:18:22,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-12-22 19:18:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:22,039 INFO L225 Difference]: With dead ends: 131 [2020-12-22 19:18:22,040 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 19:18:22,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:18:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 19:18:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 62. [2020-12-22 19:18:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 19:18:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-22 19:18:22,044 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 27 [2020-12-22 19:18:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:22,045 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-22 19:18:22,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:18:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-22 19:18:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:18:22,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:22,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:22,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 19:18:22,273 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:22,274 INFO L82 PathProgramCache]: Analyzing trace with hash -708246176, now seen corresponding path program 2 times [2020-12-22 19:18:22,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:22,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051543383] [2020-12-22 19:18:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 19:18:22,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051543383] [2020-12-22 19:18:22,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871986617] [2020-12-22 19:18:22,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:22,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:18:22,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:22,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:22,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:22,410 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_21|]} [2020-12-22 19:18:22,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:22,416 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:18:22,419 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:22,428 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:22,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:22,434 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-12-22 19:18:22,437 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:22,444 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:22,446 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:18:22,446 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-12-22 19:18:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 19:18:22,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:22,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-12-22 19:18:22,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420621315] [2020-12-22 19:18:22,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:22,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:22,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:22,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:22,627 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 4 states. [2020-12-22 19:18:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:22,676 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-12-22 19:18:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:22,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-22 19:18:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:22,678 INFO L225 Difference]: With dead ends: 62 [2020-12-22 19:18:22,679 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 19:18:22,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 19:18:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-12-22 19:18:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 19:18:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-12-22 19:18:22,684 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 30 [2020-12-22 19:18:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:22,684 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-12-22 19:18:22,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-12-22 19:18:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 19:18:22,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:22,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:22,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 19:18:22,902 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1812492132, now seen corresponding path program 1 times [2020-12-22 19:18:22,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:22,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105810579] [2020-12-22 19:18:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:22,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105810579] [2020-12-22 19:18:22,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899629653] [2020-12-22 19:18:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:23,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:23,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 19:18:23,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:23,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 19:18:23,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779204000] [2020-12-22 19:18:23,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:18:23,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:23,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:18:23,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:18:23,098 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 9 states. [2020-12-22 19:18:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:23,297 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-12-22 19:18:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:18:23,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-22 19:18:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:23,298 INFO L225 Difference]: With dead ends: 66 [2020-12-22 19:18:23,299 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 19:18:23,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:18:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 19:18:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2020-12-22 19:18:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 19:18:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-12-22 19:18:23,302 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 33 [2020-12-22 19:18:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:23,302 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-12-22 19:18:23,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:18:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-12-22 19:18:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 19:18:23,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:23,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:18:23,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 19:18:23,518 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:23,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1195577027, now seen corresponding path program 2 times [2020-12-22 19:18:23,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:23,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956201348] [2020-12-22 19:18:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 19:18:23,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956201348] [2020-12-22 19:18:23,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638514613] [2020-12-22 19:18:23,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:23,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:18:23,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:23,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:18:23,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-22 19:18:23,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:23,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-12-22 19:18:23,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825957544] [2020-12-22 19:18:23,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:18:23,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:23,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:18:23,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:23,739 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 4 states. [2020-12-22 19:18:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:23,767 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-12-22 19:18:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:18:23,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-22 19:18:23,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:23,769 INFO L225 Difference]: With dead ends: 60 [2020-12-22 19:18:23,770 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 19:18:23,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:18:23,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 19:18:23,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 19:18:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 19:18:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-12-22 19:18:23,778 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 38 [2020-12-22 19:18:23,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:23,780 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-12-22 19:18:23,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:18:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-12-22 19:18:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 19:18:23,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:23,784 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-22 19:18:23,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:18:24,000 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:24,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash -968941457, now seen corresponding path program 3 times [2020-12-22 19:18:24,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:24,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948238189] [2020-12-22 19:18:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-22 19:18:24,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948238189] [2020-12-22 19:18:24,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829684409] [2020-12-22 19:18:24,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:24,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:18:24,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:24,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:24,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-22 19:18:24,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:24,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2020-12-22 19:18:24,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308764977] [2020-12-22 19:18:24,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:18:24,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:24,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:18:24,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:18:24,236 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 9 states. [2020-12-22 19:18:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:24,356 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-12-22 19:18:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:18:24,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-12-22 19:18:24,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:24,357 INFO L225 Difference]: With dead ends: 67 [2020-12-22 19:18:24,358 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 19:18:24,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:18:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 19:18:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 46. [2020-12-22 19:18:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:18:24,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-12-22 19:18:24,360 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 44 [2020-12-22 19:18:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:24,360 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-12-22 19:18:24,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:18:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-12-22 19:18:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 19:18:24,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:18:24,361 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-22 19:18:24,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:18:24,575 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:18:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:24,576 INFO L82 PathProgramCache]: Analyzing trace with hash 27585959, now seen corresponding path program 2 times [2020-12-22 19:18:24,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:24,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494701277] [2020-12-22 19:18:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-22 19:18:24,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494701277] [2020-12-22 19:18:24,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12197804] [2020-12-22 19:18:24,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:24,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:18:24,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:24,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 19:18:24,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:24,772 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:24,773 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-22 19:18:24,775 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:24,794 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-22 19:18:24,796 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:18:24,796 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-12-22 19:18:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-22 19:18:24,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:18:24,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2020-12-22 19:18:24,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116957611] [2020-12-22 19:18:24,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:18:24,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:24,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:18:24,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:18:24,888 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 9 states. [2020-12-22 19:18:25,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:25,048 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-12-22 19:18:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:18:25,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-22 19:18:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:25,049 INFO L225 Difference]: With dead ends: 66 [2020-12-22 19:18:25,050 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:18:25,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:18:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:18:25,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:18:25,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:18:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:18:25,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-12-22 19:18:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:25,051 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:18:25,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:18:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:18:25,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:18:25,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:25,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:18:25 BoogieIcfgContainer [2020-12-22 19:18:25,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:18:25,272 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:18:25,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:18:25,273 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:18:25,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:18:16" (3/4) ... [2020-12-22 19:18:25,277 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:18:25,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-22 19:18:25,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 19:18:25,294 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 19:18:25,351 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c-witness.graphml [2020-12-22 19:18:25,351 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:18:25,353 INFO L168 Benchmark]: Toolchain (without parser) took 10235.87 ms. Allocated memory was 151.0 MB in the beginning and 232.8 MB in the end (delta: 81.8 MB). Free memory was 125.9 MB in the beginning and 157.6 MB in the end (delta: -31.6 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:25,353 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:18:25,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.32 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 117.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:25,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.66 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:25,354 INFO L168 Benchmark]: Boogie Preprocessor took 30.91 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 114.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:25,355 INFO L168 Benchmark]: RCFGBuilder took 568.84 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 129.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:25,355 INFO L168 Benchmark]: TraceAbstraction took 9177.78 ms. Allocated memory was 151.0 MB in the beginning and 232.8 MB in the end (delta: 81.8 MB). Free memory was 129.5 MB in the beginning and 160.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:25,356 INFO L168 Benchmark]: Witness Printer took 79.32 ms. Allocated memory is still 232.8 MB. Free memory was 160.3 MB in the beginning and 157.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:25,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.32 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 117.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.66 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.91 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 114.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 568.84 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 129.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9177.78 ms. Allocated memory was 151.0 MB in the beginning and 232.8 MB in the end (delta: 81.8 MB). Free memory was 129.5 MB in the beginning and 160.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 8.0 GB. * Witness Printer took 79.32 ms. Allocated memory is still 232.8 MB. Free memory was 160.3 MB in the beginning and 157.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.0s, OverallIterations: 19, TraceHistogramMax: 6, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 369 SDtfs, 976 SDslu, 519 SDs, 0 SdLazy, 1049 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 315 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 720 NumberOfCodeBlocks, 601 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 689 ConstructedInterpolants, 51 QuantifiedInterpolants, 140368 SizeOfPredicates, 33 NumberOfNonLiveVariables, 942 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 31 InterpolantComputations, 11 PerfectInterpolantSequences, 374/626 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...