/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/ArraysOfVariableLength4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:17:38,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:17:38,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:17:38,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:17:38,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:17:38,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:17:38,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:17:38,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:17:38,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:17:38,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:17:38,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:17:38,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:17:38,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:17:38,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:17:38,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:17:38,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:17:38,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:17:38,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:17:38,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:17:38,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:17:38,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:17:38,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:17:38,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:17:38,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:17:38,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:17:38,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:17:38,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:17:38,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:17:38,529 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:17:38,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:17:38,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:17:38,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:17:38,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:17:38,582 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:17:38,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:17:38,583 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:17:38,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:17:38,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:17:38,583 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:17:38,583 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:17:38,584 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:17:38,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:17:38,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:17:38,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:17:38,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:17:38,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:17:38,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:17:38,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:17:38,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:17:38,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:17:38,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:17:38,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:17:38,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:17:38,587 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:17:39,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:17:39,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:17:39,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:17:39,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:17:39,037 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:17:39,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2020-12-22 19:17:39,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82bf57faa/7fe8a25640a3436dac329a914fad92a8/FLAG360ee688d [2020-12-22 19:17:39,675 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:17:39,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2020-12-22 19:17:39,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82bf57faa/7fe8a25640a3436dac329a914fad92a8/FLAG360ee688d [2020-12-22 19:17:40,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82bf57faa/7fe8a25640a3436dac329a914fad92a8 [2020-12-22 19:17:40,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:17:40,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:17:40,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:17:40,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:17:40,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:17:40,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bfeced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40, skipping insertion in model container [2020-12-22 19:17:40,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:17:40,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:17:40,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:17:40,297 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:17:40,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:17:40,346 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:17:40,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40 WrapperNode [2020-12-22 19:17:40,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:17:40,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:17:40,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:17:40,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:17:40,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:17:40,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:17:40,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:17:40,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:17:40,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... [2020-12-22 19:17:40,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:17:40,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:17:40,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:17:40,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:17:40,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:17:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:17:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:17:40,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:17:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:17:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:17:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:17:41,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:17:41,166 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 19:17:41,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:17:41 BoogieIcfgContainer [2020-12-22 19:17:41,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:17:41,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:17:41,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:17:41,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:17:41,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:17:40" (1/3) ... [2020-12-22 19:17:41,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7396c5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:17:41, skipping insertion in model container [2020-12-22 19:17:41,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:17:40" (2/3) ... [2020-12-22 19:17:41,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7396c5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:17:41, skipping insertion in model container [2020-12-22 19:17:41,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:17:41" (3/3) ... [2020-12-22 19:17:41,193 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4.c [2020-12-22 19:17:41,208 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:17:41,222 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 19:17:41,258 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 19:17:41,288 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:17:41,289 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:17:41,289 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:17:41,289 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:17:41,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:17:41,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:17:41,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:17:41,290 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:17:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-22 19:17:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:17:41,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:41,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:17:41,335 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 19:17:41,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:41,343 INFO L82 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2020-12-22 19:17:41,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:41,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411169288] [2020-12-22 19:17:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:41,569 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 19:17:41,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411169288] [2020-12-22 19:17:41,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:41,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:17:41,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395963450] [2020-12-22 19:17:41,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:17:41,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:41,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:17:41,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:17:41,596 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-12-22 19:17:41,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:41,645 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-12-22 19:17:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:17:41,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 19:17:41,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:41,657 INFO L225 Difference]: With dead ends: 59 [2020-12-22 19:17:41,657 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 19:17:41,659 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 19:17:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 19:17:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2020-12-22 19:17:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 19:17:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-12-22 19:17:41,697 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 5 [2020-12-22 19:17:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:41,698 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-12-22 19:17:41,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:17:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-12-22 19:17:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:17:41,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:41,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:17:41,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:17:41,699 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 19:17:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash 889631015, now seen corresponding path program 1 times [2020-12-22 19:17:41,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:41,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945448932] [2020-12-22 19:17:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:41,730 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 19:17:41,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945448932] [2020-12-22 19:17:41,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:41,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:17:41,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139978875] [2020-12-22 19:17:41,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:17:41,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:41,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:17:41,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:17:41,735 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 3 states. [2020-12-22 19:17:41,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:41,778 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-12-22 19:17:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:17:41,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 19:17:41,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:41,780 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:17:41,780 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:17:41,781 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 19:17:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:17:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2020-12-22 19:17:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:17:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 19:17:41,787 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 19:17:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:41,788 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 19:17:41,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:17:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 19:17:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:17:41,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:41,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:17:41,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:17:41,789 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 19:17:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:41,790 INFO L82 PathProgramCache]: Analyzing trace with hash 889666573, now seen corresponding path program 1 times [2020-12-22 19:17:41,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:41,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343817536] [2020-12-22 19:17:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:41,833 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 19:17:41,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343817536] [2020-12-22 19:17:41,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:41,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:17:41,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531360859] [2020-12-22 19:17:41,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:17:41,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:41,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:17:41,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:17:41,836 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-22 19:17:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:41,876 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-12-22 19:17:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:41,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 19:17:41,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:41,877 INFO L225 Difference]: With dead ends: 32 [2020-12-22 19:17:41,877 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 19:17:41,878 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 19:17:41,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 19:17:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 19:17:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 19:17:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-12-22 19:17:41,883 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2020-12-22 19:17:41,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:41,883 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-12-22 19:17:41,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:17:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-12-22 19:17:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:17:41,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:41,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:17:41,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:17:41,885 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 19:17:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:41,886 INFO L82 PathProgramCache]: Analyzing trace with hash 889666574, now seen corresponding path program 1 times [2020-12-22 19:17:41,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:41,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119358659] [2020-12-22 19:17:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:41,944 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 19:17:41,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119358659] [2020-12-22 19:17:41,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:41,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:17:41,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405630050] [2020-12-22 19:17:41,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:17:41,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:41,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:17:41,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:17:41,947 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2020-12-22 19:17:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:42,022 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-12-22 19:17:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:17:42,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 19:17:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:42,024 INFO L225 Difference]: With dead ends: 55 [2020-12-22 19:17:42,024 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 19:17:42,025 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 19:17:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 19:17:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2020-12-22 19:17:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:17:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 19:17:42,031 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 19:17:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:42,031 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 19:17:42,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:17:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 19:17:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:17:42,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:42,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:42,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:17:42,033 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 19:17:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:42,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2020-12-22 19:17:42,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:42,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349060301] [2020-12-22 19:17:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:42,091 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 19:17:42,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349060301] [2020-12-22 19:17:42,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:42,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:17:42,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992011876] [2020-12-22 19:17:42,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:17:42,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:42,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:17:42,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:17:42,098 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 3 states. [2020-12-22 19:17:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:42,137 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-12-22 19:17:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:17:42,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 19:17:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:42,138 INFO L225 Difference]: With dead ends: 35 [2020-12-22 19:17:42,139 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 19:17:42,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 19:17:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 19:17:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-12-22 19:17:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 19:17:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-22 19:17:42,146 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 7 [2020-12-22 19:17:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:42,152 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-22 19:17:42,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:17:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-22 19:17:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 19:17:42,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:42,154 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:42,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:17:42,154 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 19:17:42,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:42,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1480744241, now seen corresponding path program 1 times [2020-12-22 19:17:42,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:42,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835107817] [2020-12-22 19:17:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:42,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835107817] [2020-12-22 19:17:42,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908496436] [2020-12-22 19:17:42,204 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 19:17:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:42,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:17:42,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:42,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:42,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-12-22 19:17:42,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696631219] [2020-12-22 19:17:42,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:17:42,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:42,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:17:42,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:17:42,303 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2020-12-22 19:17:42,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:42,345 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-12-22 19:17:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:42,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 19:17:42,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:42,347 INFO L225 Difference]: With dead ends: 61 [2020-12-22 19:17:42,348 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 19:17:42,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 19:17:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 19:17:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 37. [2020-12-22 19:17:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 19:17:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 19:17:42,357 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-22 19:17:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:42,357 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 19:17:42,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:17:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 19:17:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 19:17:42,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:42,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:42,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 19:17:42,573 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 19:17:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:42,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1341568839, now seen corresponding path program 1 times [2020-12-22 19:17:42,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:42,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470874495] [2020-12-22 19:17:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 19:17:42,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470874495] [2020-12-22 19:17:42,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:17:42,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:17:42,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37632029] [2020-12-22 19:17:42,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:17:42,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:42,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:17:42,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:17:42,682 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-12-22 19:17:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:42,747 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-12-22 19:17:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:17:42,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 19:17:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:42,748 INFO L225 Difference]: With dead ends: 36 [2020-12-22 19:17:42,748 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 19:17:42,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:17:42,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 19:17:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-22 19:17:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:17:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-22 19:17:42,753 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 11 [2020-12-22 19:17:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:42,753 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-22 19:17:42,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:17:42,754 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-22 19:17:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 19:17:42,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:42,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:42,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:17:42,755 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 19:17:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1361088610, now seen corresponding path program 1 times [2020-12-22 19:17:42,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:42,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380294941] [2020-12-22 19:17:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:42,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380294941] [2020-12-22 19:17:42,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174153561] [2020-12-22 19:17:42,801 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 19:17:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:42,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:17:42,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:42,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:42,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 19:17:42,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355567828] [2020-12-22 19:17:42,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:17:42,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:42,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:17:42,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:17:42,924 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2020-12-22 19:17:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:42,963 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-12-22 19:17:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:42,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 19:17:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:42,965 INFO L225 Difference]: With dead ends: 39 [2020-12-22 19:17:42,965 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 19:17:42,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:17:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 19:17:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-22 19:17:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 19:17:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-12-22 19:17:42,973 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 12 [2020-12-22 19:17:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:42,976 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-12-22 19:17:42,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:17:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-12-22 19:17:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:17:42,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:42,977 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 19:17:43,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:43,180 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 19:17:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:43,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2073745800, now seen corresponding path program 2 times [2020-12-22 19:17:43,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:43,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489424101] [2020-12-22 19:17:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:43,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489424101] [2020-12-22 19:17:43,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208328846] [2020-12-22 19:17:43,241 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 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 19:17:43,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:17:43,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:43,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:17:43,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:43,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:43,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2020-12-22 19:17:43,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63863669] [2020-12-22 19:17:43,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:17:43,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:43,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:17:43,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:17:43,380 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 9 states. [2020-12-22 19:17:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:43,505 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-12-22 19:17:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:17:43,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-22 19:17:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:43,508 INFO L225 Difference]: With dead ends: 84 [2020-12-22 19:17:43,508 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 19:17:43,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:17:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 19:17:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 34. [2020-12-22 19:17:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 19:17:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-12-22 19:17:43,514 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 15 [2020-12-22 19:17:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:43,514 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-12-22 19:17:43,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:17:43,515 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-12-22 19:17:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:17:43,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:43,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:43,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:43,731 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 19:17:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:43,732 INFO L82 PathProgramCache]: Analyzing trace with hash 4840471, now seen corresponding path program 2 times [2020-12-22 19:17:43,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:43,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022883113] [2020-12-22 19:17:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:43,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022883113] [2020-12-22 19:17:43,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513378190] [2020-12-22 19:17:43,793 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 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 19:17:43,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:17:43,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:43,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 19:17:43,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:43,900 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-12-22 19:17:43,901 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-12-22 19:17:43,903 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:43,907 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:43,909 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 19:17:43,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-12-22 19:17:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 19:17:43,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:17:43,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2020-12-22 19:17:43,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289028494] [2020-12-22 19:17:43,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:17:43,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:43,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:17:43,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:17:43,948 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 3 states. [2020-12-22 19:17:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:43,963 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-12-22 19:17:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:17:43,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 19:17:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:43,965 INFO L225 Difference]: With dead ends: 32 [2020-12-22 19:17:43,965 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 19:17:43,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:17:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 19:17:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 19:17:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 19:17:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-12-22 19:17:43,969 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 17 [2020-12-22 19:17:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:43,969 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-12-22 19:17:43,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:17:43,969 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-12-22 19:17:43,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:17:43,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:43,970 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:44,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:44,178 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 19:17:44,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:44,179 INFO L82 PathProgramCache]: Analyzing trace with hash 4840472, now seen corresponding path program 1 times [2020-12-22 19:17:44,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:44,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779167791] [2020-12-22 19:17:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:44,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779167791] [2020-12-22 19:17:44,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783310889] [2020-12-22 19:17:44,244 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 19:17:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:44,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:17:44,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:44,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:44,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 19:17:44,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453466943] [2020-12-22 19:17:44,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:17:44,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:44,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:17:44,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:17:44,379 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 8 states. [2020-12-22 19:17:44,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:44,415 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-12-22 19:17:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:17:44,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-22 19:17:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:44,417 INFO L225 Difference]: With dead ends: 41 [2020-12-22 19:17:44,417 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 19:17:44,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:17:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 19:17:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2020-12-22 19:17:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 19:17:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-12-22 19:17:44,421 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2020-12-22 19:17:44,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:44,421 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-12-22 19:17:44,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:17:44,421 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-12-22 19:17:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:17:44,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:44,422 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:44,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 19:17:44,636 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 19:17:44,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:44,638 INFO L82 PathProgramCache]: Analyzing trace with hash 452809535, now seen corresponding path program 2 times [2020-12-22 19:17:44,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:44,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957713681] [2020-12-22 19:17:44,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:44,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957713681] [2020-12-22 19:17:44,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487216356] [2020-12-22 19:17:44,746 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 19:17:44,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:17:44,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:44,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:17:44,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:44,816 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_10|], 1=[|v_#valid_21|]} [2020-12-22 19:17:44,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:17:44,822 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 19:17:44,823 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:44,835 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:44,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:17:44,843 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 19:17:44,845 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:44,859 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:44,861 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 19:17:44,862 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2020-12-22 19:17:45,041 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 19:17:45,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:17:45,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2020-12-22 19:17:45,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621786769] [2020-12-22 19:17:45,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:17:45,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:45,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:17:45,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:17:45,044 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 3 states. [2020-12-22 19:17:45,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:45,081 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-22 19:17:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:17:45,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:17:45,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:45,083 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:17:45,083 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 19:17:45,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:17:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 19:17:45,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-12-22 19:17:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 19:17:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-22 19:17:45,102 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 22 [2020-12-22 19:17:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:45,102 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-22 19:17:45,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:17:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-22 19:17:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:17:45,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:45,103 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:45,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:45,319 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 19:17:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:45,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1462146076, now seen corresponding path program 1 times [2020-12-22 19:17:45,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:45,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354765543] [2020-12-22 19:17:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 19:17:45,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354765543] [2020-12-22 19:17:45,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372108407] [2020-12-22 19:17:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:17:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:45,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:17:45,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:17:45,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:45,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2020-12-22 19:17:45,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316990686] [2020-12-22 19:17:45,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:17:45,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:45,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:17:45,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:17:45,522 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 8 states. [2020-12-22 19:17:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:45,729 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-12-22 19:17:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 19:17:45,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-12-22 19:17:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:45,731 INFO L225 Difference]: With dead ends: 123 [2020-12-22 19:17:45,731 INFO L226 Difference]: Without dead ends: 123 [2020-12-22 19:17:45,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2020-12-22 19:17:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-22 19:17:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 73. [2020-12-22 19:17:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 19:17:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-12-22 19:17:45,736 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 28 [2020-12-22 19:17:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:45,736 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-12-22 19:17:45,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:17:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-12-22 19:17:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 19:17:45,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:45,738 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:45,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:45,954 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 19:17:45,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:45,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2053576093, now seen corresponding path program 1 times [2020-12-22 19:17:45,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:45,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353471916] [2020-12-22 19:17:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 90 proven. 34 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-12-22 19:17:46,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353471916] [2020-12-22 19:17:46,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764676686] [2020-12-22 19:17:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:17:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:46,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:17:46,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 90 proven. 34 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-12-22 19:17:46,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:46,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-22 19:17:46,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998411070] [2020-12-22 19:17:46,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:17:46,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:46,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:17:46,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:17:46,295 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 12 states. [2020-12-22 19:17:46,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:46,374 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2020-12-22 19:17:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:17:46,375 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-12-22 19:17:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:46,375 INFO L225 Difference]: With dead ends: 91 [2020-12-22 19:17:46,375 INFO L226 Difference]: Without dead ends: 91 [2020-12-22 19:17:46,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:17:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-22 19:17:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2020-12-22 19:17:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:17:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2020-12-22 19:17:46,380 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 54 [2020-12-22 19:17:46,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:46,380 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2020-12-22 19:17:46,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:17:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2020-12-22 19:17:46,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 19:17:46,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:46,382 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:46,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 19:17:46,596 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 19:17:46,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:46,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1430852155, now seen corresponding path program 2 times [2020-12-22 19:17:46,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:46,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692151313] [2020-12-22 19:17:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 137 proven. 55 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-22 19:17:46,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692151313] [2020-12-22 19:17:46,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73825669] [2020-12-22 19:17:46,792 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 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 19:17:46,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:17:46,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:46,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:17:46,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 137 proven. 55 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-22 19:17:47,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:47,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-12-22 19:17:47,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966501699] [2020-12-22 19:17:47,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 19:17:47,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:47,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 19:17:47,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:17:47,040 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 14 states. [2020-12-22 19:17:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:47,100 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2020-12-22 19:17:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:17:47,100 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-12-22 19:17:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:47,101 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:17:47,101 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:17:47,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2020-12-22 19:17:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:17:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2020-12-22 19:17:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:17:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2020-12-22 19:17:47,116 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 64 [2020-12-22 19:17:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:47,118 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2020-12-22 19:17:47,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 19:17:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2020-12-22 19:17:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 19:17:47,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:47,127 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:47,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 19:17:47,342 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 19:17:47,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1919974563, now seen corresponding path program 3 times [2020-12-22 19:17:47,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:47,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330415763] [2020-12-22 19:17:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 194 proven. 81 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-22 19:17:47,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330415763] [2020-12-22 19:17:47,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697930081] [2020-12-22 19:17:47,476 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 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 19:17:47,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:17:47,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:47,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:17:47,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:47,552 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_11|], 1=[|v_#valid_22|]} [2020-12-22 19:17:47,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:17:47,557 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 19:17:47,561 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:47,570 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:47,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:17:47,578 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 19:17:47,583 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:47,590 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:47,592 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 19:17:47,592 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2020-12-22 19:17:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-12-22 19:17:47,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:47,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3] total 11 [2020-12-22 19:17:47,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177293634] [2020-12-22 19:17:47,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:17:47,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:47,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:17:47,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:17:47,917 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand 11 states. [2020-12-22 19:17:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:48,486 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2020-12-22 19:17:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 19:17:48,487 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-12-22 19:17:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:48,488 INFO L225 Difference]: With dead ends: 156 [2020-12-22 19:17:48,488 INFO L226 Difference]: Without dead ends: 156 [2020-12-22 19:17:48,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-12-22 19:17:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-22 19:17:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2020-12-22 19:17:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 19:17:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 149 transitions. [2020-12-22 19:17:48,493 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 149 transitions. Word has length 74 [2020-12-22 19:17:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:48,494 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 149 transitions. [2020-12-22 19:17:48,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:17:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2020-12-22 19:17:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 19:17:48,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:48,495 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:48,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 19:17:48,710 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 19:17:48,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:48,711 INFO L82 PathProgramCache]: Analyzing trace with hash -703043040, now seen corresponding path program 2 times [2020-12-22 19:17:48,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:48,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607184902] [2020-12-22 19:17:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-12-22 19:17:48,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607184902] [2020-12-22 19:17:48,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330845822] [2020-12-22 19:17:48,920 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 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 19:17:48,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:17:48,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:48,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:17:48,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:48,981 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_23|]} [2020-12-22 19:17:48,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:17:48,986 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 19:17:48,987 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:48,994 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:48,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:17:48,999 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 19:17:49,000 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:17:49,006 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:17:49,008 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 19:17:49,008 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-12-22 19:17:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-12-22 19:17:49,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:17:49,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-12-22 19:17:49,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84081951] [2020-12-22 19:17:49,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:17:49,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:49,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:17:49,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:17:49,300 INFO L87 Difference]: Start difference. First operand 142 states and 149 transitions. Second operand 4 states. [2020-12-22 19:17:49,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:49,339 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2020-12-22 19:17:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:49,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-22 19:17:49,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:49,341 INFO L225 Difference]: With dead ends: 143 [2020-12-22 19:17:49,341 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 19:17:49,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 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 19:17:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 19:17:49,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2020-12-22 19:17:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 19:17:49,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 148 transitions. [2020-12-22 19:17:49,346 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 148 transitions. Word has length 90 [2020-12-22 19:17:49,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:49,346 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 148 transitions. [2020-12-22 19:17:49,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:17:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 148 transitions. [2020-12-22 19:17:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 19:17:49,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:49,348 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:49,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 19:17:49,562 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 19:17:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:49,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2094673244, now seen corresponding path program 1 times [2020-12-22 19:17:49,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:49,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984683517] [2020-12-22 19:17:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 262 proven. 112 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-12-22 19:17:49,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984683517] [2020-12-22 19:17:49,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102541059] [2020-12-22 19:17:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 19:17:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:49,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:17:49,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 262 proven. 112 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-12-22 19:17:50,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:50,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-12-22 19:17:50,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620458912] [2020-12-22 19:17:50,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 19:17:50,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:50,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 19:17:50,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:17:50,025 INFO L87 Difference]: Start difference. First operand 142 states and 148 transitions. Second operand 18 states. [2020-12-22 19:17:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:50,111 INFO L93 Difference]: Finished difference Result 169 states and 175 transitions. [2020-12-22 19:17:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:17:50,111 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 93 [2020-12-22 19:17:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:50,113 INFO L225 Difference]: With dead ends: 169 [2020-12-22 19:17:50,113 INFO L226 Difference]: Without dead ends: 169 [2020-12-22 19:17:50,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2020-12-22 19:17:50,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-22 19:17:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 157. [2020-12-22 19:17:50,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-22 19:17:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 163 transitions. [2020-12-22 19:17:50,117 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 163 transitions. Word has length 93 [2020-12-22 19:17:50,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:50,117 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 163 transitions. [2020-12-22 19:17:50,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 19:17:50,118 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 163 transitions. [2020-12-22 19:17:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 19:17:50,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:50,119 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:50,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 19:17:50,333 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 19:17:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:50,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1716143932, now seen corresponding path program 2 times [2020-12-22 19:17:50,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:50,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942443174] [2020-12-22 19:17:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 339 proven. 148 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-22 19:17:50,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942443174] [2020-12-22 19:17:50,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290500689] [2020-12-22 19:17:50,505 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:50,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 19:17:50,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:50,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:17:50,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2020-12-22 19:17:50,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:17:50,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2020-12-22 19:17:50,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834950810] [2020-12-22 19:17:50,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:17:50,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:50,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:17:50,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:17:50,786 INFO L87 Difference]: Start difference. First operand 157 states and 163 transitions. Second operand 4 states. [2020-12-22 19:17:50,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:50,821 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2020-12-22 19:17:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:17:50,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-12-22 19:17:50,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:50,825 INFO L225 Difference]: With dead ends: 156 [2020-12-22 19:17:50,825 INFO L226 Difference]: Without dead ends: 153 [2020-12-22 19:17:50,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:17:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-22 19:17:50,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2020-12-22 19:17:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-22 19:17:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 154 transitions. [2020-12-22 19:17:50,830 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 154 transitions. Word has length 103 [2020-12-22 19:17:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:50,832 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 154 transitions. [2020-12-22 19:17:50,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:17:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 154 transitions. [2020-12-22 19:17:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 19:17:50,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:50,833 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:51,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:51,047 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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 19:17:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:51,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1660976843, now seen corresponding path program 1 times [2020-12-22 19:17:51,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:51,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787498307] [2020-12-22 19:17:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 339 proven. 148 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-12-22 19:17:51,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787498307] [2020-12-22 19:17:51,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490580108] [2020-12-22 19:17:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:51,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 19:17:51,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 339 proven. 148 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-12-22 19:17:51,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:51,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2020-12-22 19:17:51,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338755004] [2020-12-22 19:17:51,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 19:17:51,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 19:17:51,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:17:51,622 INFO L87 Difference]: Start difference. First operand 150 states and 154 transitions. Second operand 20 states. [2020-12-22 19:17:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:51,720 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2020-12-22 19:17:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:17:51,720 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-12-22 19:17:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:51,721 INFO L225 Difference]: With dead ends: 177 [2020-12-22 19:17:51,722 INFO L226 Difference]: Without dead ends: 177 [2020-12-22 19:17:51,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2020-12-22 19:17:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-22 19:17:51,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2020-12-22 19:17:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-12-22 19:17:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2020-12-22 19:17:51,726 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 104 [2020-12-22 19:17:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:51,726 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2020-12-22 19:17:51,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 19:17:51,726 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2020-12-22 19:17:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 19:17:51,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:51,727 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:51,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:51,942 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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 19:17:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:51,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1846195037, now seen corresponding path program 2 times [2020-12-22 19:17:51,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:51,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106649009] [2020-12-22 19:17:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 426 proven. 189 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-12-22 19:17:52,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106649009] [2020-12-22 19:17:52,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687360162] [2020-12-22 19:17:52,120 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:52,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:17:52,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:52,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 19:17:52,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 426 proven. 189 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-12-22 19:17:52,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:52,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2020-12-22 19:17:52,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629519643] [2020-12-22 19:17:52,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 19:17:52,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:52,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 19:17:52,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:17:52,566 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand 22 states. [2020-12-22 19:17:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:52,668 INFO L93 Difference]: Finished difference Result 192 states and 196 transitions. [2020-12-22 19:17:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:17:52,668 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 114 [2020-12-22 19:17:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:52,669 INFO L225 Difference]: With dead ends: 192 [2020-12-22 19:17:52,669 INFO L226 Difference]: Without dead ends: 192 [2020-12-22 19:17:52,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2020-12-22 19:17:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-12-22 19:17:52,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2020-12-22 19:17:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-22 19:17:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2020-12-22 19:17:52,674 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 114 [2020-12-22 19:17:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:52,674 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 184 transitions. [2020-12-22 19:17:52,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 19:17:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 184 transitions. [2020-12-22 19:17:52,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 19:17:52,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:52,676 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:17:52,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 19:17:52,890 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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 19:17:52,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:52,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1224310517, now seen corresponding path program 3 times [2020-12-22 19:17:52,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:52,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588230220] [2020-12-22 19:17:52,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 523 proven. 235 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-12-22 19:17:53,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588230220] [2020-12-22 19:17:53,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132073782] [2020-12-22 19:17:53,078 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:53,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 19:17:53,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:53,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:17:53,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2020-12-22 19:17:53,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:53,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 19 [2020-12-22 19:17:53,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968258901] [2020-12-22 19:17:53,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 19:17:53,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:53,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 19:17:53,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-12-22 19:17:53,500 INFO L87 Difference]: Start difference. First operand 180 states and 184 transitions. Second operand 19 states. [2020-12-22 19:17:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:54,869 INFO L93 Difference]: Finished difference Result 218 states and 223 transitions. [2020-12-22 19:17:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 19:17:54,877 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-12-22 19:17:54,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:54,881 INFO L225 Difference]: With dead ends: 218 [2020-12-22 19:17:54,881 INFO L226 Difference]: Without dead ends: 218 [2020-12-22 19:17:54,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=899, Invalid=1963, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 19:17:54,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-22 19:17:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 199. [2020-12-22 19:17:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-22 19:17:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 203 transitions. [2020-12-22 19:17:54,893 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 203 transitions. Word has length 124 [2020-12-22 19:17:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:54,893 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 203 transitions. [2020-12-22 19:17:54,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 19:17:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 203 transitions. [2020-12-22 19:17:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 19:17:54,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:54,895 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-22 19:17:55,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:55,110 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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 19:17:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:55,111 INFO L82 PathProgramCache]: Analyzing trace with hash 496940454, now seen corresponding path program 4 times [2020-12-22 19:17:55,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:55,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270427029] [2020-12-22 19:17:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 630 proven. 286 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-12-22 19:17:55,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270427029] [2020-12-22 19:17:55,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558845149] [2020-12-22 19:17:55,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:55,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:17:55,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:55,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 19:17:55,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 636 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2020-12-22 19:17:55,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:55,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17 [2020-12-22 19:17:55,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687530048] [2020-12-22 19:17:55,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 19:17:55,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:55,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 19:17:55,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2020-12-22 19:17:55,726 INFO L87 Difference]: Start difference. First operand 199 states and 203 transitions. Second operand 17 states. [2020-12-22 19:17:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:56,773 INFO L93 Difference]: Finished difference Result 307 states and 312 transitions. [2020-12-22 19:17:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-22 19:17:56,773 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 138 [2020-12-22 19:17:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:56,775 INFO L225 Difference]: With dead ends: 307 [2020-12-22 19:17:56,775 INFO L226 Difference]: Without dead ends: 307 [2020-12-22 19:17:56,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=910, Invalid=1846, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 19:17:56,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-12-22 19:17:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 217. [2020-12-22 19:17:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-22 19:17:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2020-12-22 19:17:56,782 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 138 [2020-12-22 19:17:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:56,783 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2020-12-22 19:17:56,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 19:17:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2020-12-22 19:17:56,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 19:17:56,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:56,785 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2020-12-22 19:17:56,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 19:17:57,000 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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 19:17:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:57,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1540658664, now seen corresponding path program 4 times [2020-12-22 19:17:57,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:57,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605727155] [2020-12-22 19:17:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3275 backedges. 1492 proven. 342 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2020-12-22 19:17:57,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605727155] [2020-12-22 19:17:57,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111525339] [2020-12-22 19:17:57,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:57,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:17:57,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:57,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 19:17:57,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3275 backedges. 1492 proven. 342 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2020-12-22 19:17:58,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:58,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2020-12-22 19:17:58,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190314422] [2020-12-22 19:17:58,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-22 19:17:58,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:58,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-22 19:17:58,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=456, Unknown=0, NotChecked=0, Total=756 [2020-12-22 19:17:58,012 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand 28 states. [2020-12-22 19:17:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:58,152 INFO L93 Difference]: Finished difference Result 244 states and 248 transitions. [2020-12-22 19:17:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 19:17:58,152 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 201 [2020-12-22 19:17:58,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:58,154 INFO L225 Difference]: With dead ends: 244 [2020-12-22 19:17:58,154 INFO L226 Difference]: Without dead ends: 244 [2020-12-22 19:17:58,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=456, Unknown=0, NotChecked=0, Total=756 [2020-12-22 19:17:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-12-22 19:17:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 232. [2020-12-22 19:17:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-12-22 19:17:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 236 transitions. [2020-12-22 19:17:58,160 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 236 transitions. Word has length 201 [2020-12-22 19:17:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:58,160 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 236 transitions. [2020-12-22 19:17:58,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-22 19:17:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 236 transitions. [2020-12-22 19:17:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-12-22 19:17:58,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:58,163 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2020-12-22 19:17:58,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 19:17:58,377 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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 19:17:58,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:17:58,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1369292055, now seen corresponding path program 5 times [2020-12-22 19:17:58,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:17:58,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345087046] [2020-12-22 19:17:58,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:17:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:17:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3839 backedges. 1746 proven. 403 refuted. 0 times theorem prover too weak. 1690 trivial. 0 not checked. [2020-12-22 19:17:58,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345087046] [2020-12-22 19:17:58,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851200898] [2020-12-22 19:17:58,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:17:59,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2020-12-22 19:17:59,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:17:59,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 19:17:59,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:17:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3839 backedges. 1746 proven. 403 refuted. 0 times theorem prover too weak. 1690 trivial. 0 not checked. [2020-12-22 19:17:59,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:17:59,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2020-12-22 19:17:59,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302902021] [2020-12-22 19:17:59,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 19:17:59,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:17:59,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 19:17:59,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=526, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:17:59,662 INFO L87 Difference]: Start difference. First operand 232 states and 236 transitions. Second operand 30 states. [2020-12-22 19:17:59,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:17:59,815 INFO L93 Difference]: Finished difference Result 259 states and 263 transitions. [2020-12-22 19:17:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 19:17:59,819 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 216 [2020-12-22 19:17:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:17:59,820 INFO L225 Difference]: With dead ends: 259 [2020-12-22 19:17:59,821 INFO L226 Difference]: Without dead ends: 259 [2020-12-22 19:17:59,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=344, Invalid=526, Unknown=0, NotChecked=0, Total=870 [2020-12-22 19:17:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-12-22 19:17:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 247. [2020-12-22 19:17:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-12-22 19:17:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 251 transitions. [2020-12-22 19:17:59,827 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 251 transitions. Word has length 216 [2020-12-22 19:17:59,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:17:59,827 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 251 transitions. [2020-12-22 19:17:59,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 19:17:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 251 transitions. [2020-12-22 19:17:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-12-22 19:17:59,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:17:59,831 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2020-12-22 19:18:00,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 19:18:00,046 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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 19:18:00,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:18:00,047 INFO L82 PathProgramCache]: Analyzing trace with hash -685055944, now seen corresponding path program 6 times [2020-12-22 19:18:00,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:18:00,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44541534] [2020-12-22 19:18:00,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:18:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:18:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 2020 proven. 469 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2020-12-22 19:18:00,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44541534] [2020-12-22 19:18:00,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309925143] [2020-12-22 19:18:00,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:18:00,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-22 19:18:00,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:18:00,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:18:00,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:18:00,464 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_26|]} [2020-12-22 19:18:00,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:00,469 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 19:18:00,470 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:00,477 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:00,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 19:18:00,482 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 19:18:00,486 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 19:18:00,492 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:18:00,493 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 19:18:00,493 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-12-22 19:18:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 2028 proven. 0 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-12-22 19:18:01,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 19:18:01,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2020-12-22 19:18:01,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000938226] [2020-12-22 19:18:01,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:18:01,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:18:01,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:18:01,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:18:01,488 INFO L87 Difference]: Start difference. First operand 247 states and 251 transitions. Second operand 6 states. [2020-12-22 19:18:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:18:01,537 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2020-12-22 19:18:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:18:01,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 231 [2020-12-22 19:18:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:18:01,538 INFO L225 Difference]: With dead ends: 245 [2020-12-22 19:18:01,538 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:18:01,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-12-22 19:18:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:18:01,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:18:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:18:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:18:01,539 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 231 [2020-12-22 19:18:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:18:01,539 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:18:01,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:18:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:18:01,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:18:01,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 19:18:01,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:18:01 BoogieIcfgContainer [2020-12-22 19:18:01,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:18:01,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:18:01,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:18:01,748 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:18:01,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:17:41" (3/4) ... [2020-12-22 19:18:01,752 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:18:01,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-22 19:18:01,765 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 19:18:01,765 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 19:18:01,804 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-memsafety/ArraysOfVariableLength4.c-witness.graphml [2020-12-22 19:18:01,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:18:01,805 INFO L168 Benchmark]: Toolchain (without parser) took 21756.69 ms. Allocated memory was 151.0 MB in the beginning and 385.9 MB in the end (delta: 234.9 MB). Free memory was 126.4 MB in the beginning and 224.7 MB in the end (delta: -98.3 MB). Peak memory consumption was 137.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:01,805 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:18:01,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.72 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 117.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:01,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.20 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:01,806 INFO L168 Benchmark]: Boogie Preprocessor took 68.38 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:01,807 INFO L168 Benchmark]: RCFGBuilder took 695.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 132.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:01,807 INFO L168 Benchmark]: TraceAbstraction took 20570.71 ms. Allocated memory was 151.0 MB in the beginning and 385.9 MB in the end (delta: 234.9 MB). Free memory was 131.6 MB in the beginning and 227.1 MB in the end (delta: -95.5 MB). Peak memory consumption was 140.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:01,808 INFO L168 Benchmark]: Witness Printer took 56.36 ms. Allocated memory is still 385.9 MB. Free memory was 227.1 MB in the beginning and 224.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:18:01,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.72 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 117.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.20 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.38 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 695.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 132.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20570.71 ms. Allocated memory was 151.0 MB in the beginning and 385.9 MB in the end (delta: 234.9 MB). Free memory was 131.6 MB in the beginning and 227.1 MB in the end (delta: -95.5 MB). Peak memory consumption was 140.7 MB. Max. memory is 8.0 GB. * Witness Printer took 56.36 ms. Allocated memory is still 385.9 MB. Free memory was 227.1 MB in the beginning and 224.7 MB in the end (delta: 2.4 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: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: 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: 20.4s, OverallIterations: 26, TraceHistogramMax: 42, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 534 SDtfs, 2229 SDslu, 1522 SDs, 0 SdLazy, 1744 SolverSat, 242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2006 GetRequests, 1653 SyntacticMatches, 2 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 409 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 3495 NumberOfCodeBlocks, 2916 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 3449 ConstructedInterpolants, 410 QuantifiedInterpolants, 2706696 SizeOfPredicates, 38 NumberOfNonLiveVariables, 3473 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 46 InterpolantComputations, 11 PerfectInterpolantSequences, 30425/35387 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...