/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/memsafety-ext3/getNumbers1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:43:10,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:43:10,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:43:10,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:43:10,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:43:10,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:43:10,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:43:10,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:43:10,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:43:10,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:43:10,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:43:10,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:43:10,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:43:10,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:43:10,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:43:10,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:43:10,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:43:10,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:43:10,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:43:10,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:43:10,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:43:10,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:43:10,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:43:10,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:43:10,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:43:10,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:43:10,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:43:10,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:43:10,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:43:10,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:43:10,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:43:10,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:43:10,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:43:10,590 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:43:10,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:43:10,591 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:43:10,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:43:10,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:43:10,592 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:43:10,592 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:43:10,592 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:43:10,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:43:10,593 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:43:10,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:43:10,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:43:10,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:43:10,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:43:10,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:43:10,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:43:10,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:43:10,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:43:10,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:43:10,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:43:10,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:43:11,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:43:11,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:43:11,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:43:11,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:43:11,101 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:43:11,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2020-12-22 19:43:11,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c37ba622/8568df2b86064541b65ce3429fe9432a/FLAGcaccd5e1e [2020-12-22 19:43:11,747 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:43:11,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2020-12-22 19:43:11,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c37ba622/8568df2b86064541b65ce3429fe9432a/FLAGcaccd5e1e [2020-12-22 19:43:12,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c37ba622/8568df2b86064541b65ce3429fe9432a [2020-12-22 19:43:12,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:43:12,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:43:12,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:43:12,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:43:12,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:43:12,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b32aa21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12, skipping insertion in model container [2020-12-22 19:43:12,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:43:12,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:43:12,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:43:12,354 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:43:12,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:43:12,403 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:43:12,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12 WrapperNode [2020-12-22 19:43:12,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:43:12,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:43:12,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:43:12,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:43:12,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:43:12,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:43:12,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:43:12,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:43:12,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (1/1) ... [2020-12-22 19:43:12,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:43:12,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:43:12,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:43:12,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:43:12,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (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 19:43:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:43:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:43:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:43:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:43:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:43:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:43:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:43:13,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:43:13,130 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 19:43:13,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:13 BoogieIcfgContainer [2020-12-22 19:43:13,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:43:13,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:43:13,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:43:13,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:43:13,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:43:12" (1/3) ... [2020-12-22 19:43:13,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58185b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:43:13, skipping insertion in model container [2020-12-22 19:43:13,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:43:12" (2/3) ... [2020-12-22 19:43:13,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58185b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:43:13, skipping insertion in model container [2020-12-22 19:43:13,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:13" (3/3) ... [2020-12-22 19:43:13,161 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers1-1.c [2020-12-22 19:43:13,175 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:43:13,189 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 19:43:13,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 19:43:13,277 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:43:13,277 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:43:13,277 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:43:13,277 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:43:13,278 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:43:13,278 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:43:13,278 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:43:13,278 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:43:13,293 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-22 19:43:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:13,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:13,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:13,301 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:13,308 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-12-22 19:43:13,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:13,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120132976] [2020-12-22 19:43:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:13,535 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 19:43:13,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120132976] [2020-12-22 19:43:13,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:13,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:13,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535202212] [2020-12-22 19:43:13,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:13,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:13,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:13,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:13,563 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-12-22 19:43:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:13,605 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-22 19:43:13,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:13,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:43:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:13,617 INFO L225 Difference]: With dead ends: 19 [2020-12-22 19:43:13,618 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 19:43:13,619 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 19:43:13,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 19:43:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-22 19:43:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 19:43:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-22 19:43:13,653 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2020-12-22 19:43:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:13,654 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-22 19:43:13,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-22 19:43:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 19:43:13,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:13,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 19:43:13,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:43:13,655 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:13,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:13,657 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2020-12-22 19:43:13,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:13,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302315618] [2020-12-22 19:43:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:13,738 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 19:43:13,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302315618] [2020-12-22 19:43:13,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:13,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:43:13,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019742486] [2020-12-22 19:43:13,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:43:13,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:13,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:43:13,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:43:13,743 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2020-12-22 19:43:13,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:13,777 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-12-22 19:43:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:43:13,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 19:43:13,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:13,779 INFO L225 Difference]: With dead ends: 20 [2020-12-22 19:43:13,779 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 19:43:13,780 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 19:43:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 19:43:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-22 19:43:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 19:43:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-22 19:43:13,784 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2020-12-22 19:43:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:13,784 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-22 19:43:13,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:43:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-22 19:43:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:43:13,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:13,786 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-22 19:43:13,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:43:13,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:13,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2020-12-22 19:43:13,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:13,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867869032] [2020-12-22 19:43:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:13,884 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 19:43:13,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867869032] [2020-12-22 19:43:13,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607418116] [2020-12-22 19:43:13,885 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 19:43:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:13,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 19:43:13,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:14,036 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 19:43:14,046 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 19:43:14,062 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 19:43:14,066 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 19:43:14,066 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 19:43:14,146 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 19:43:14,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:14,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-12-22 19:43:14,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600410963] [2020-12-22 19:43:14,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:43:14,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:14,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:43:14,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:43:14,151 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2020-12-22 19:43:14,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:14,233 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-22 19:43:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:14,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-22 19:43:14,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:14,236 INFO L225 Difference]: With dead ends: 23 [2020-12-22 19:43:14,237 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 19:43:14,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:43:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 19:43:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 19:43:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 19:43:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-22 19:43:14,252 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2020-12-22 19:43:14,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:14,253 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-22 19:43:14,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:43:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-22 19:43:14,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 19:43:14,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:14,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:14,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 19:43:14,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:14,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:14,461 INFO L82 PathProgramCache]: Analyzing trace with hash -118451422, now seen corresponding path program 1 times [2020-12-22 19:43:14,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:14,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049477971] [2020-12-22 19:43:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:14,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049477971] [2020-12-22 19:43:14,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893007913] [2020-12-22 19:43:14,603 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 19:43:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:14,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 19:43:14,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:14,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:14,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 19:43:14,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568845799] [2020-12-22 19:43:14,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:43:14,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:14,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:43:14,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:14,736 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-12-22 19:43:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:14,780 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-12-22 19:43:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:43:14,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 19:43:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:14,782 INFO L225 Difference]: With dead ends: 28 [2020-12-22 19:43:14,783 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 19:43:14,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:43:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 19:43:14,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-12-22 19:43:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 19:43:14,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-12-22 19:43:14,788 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2020-12-22 19:43:14,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:14,789 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-12-22 19:43:14,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:43:14,789 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-12-22 19:43:14,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:43:14,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:14,790 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:15,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:15,005 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:15,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:15,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 2 times [2020-12-22 19:43:15,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:15,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460424260] [2020-12-22 19:43:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 19:43:15,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460424260] [2020-12-22 19:43:15,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:43:15,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:43:15,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704413257] [2020-12-22 19:43:15,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:43:15,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:43:15,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:43:15,165 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 5 states. [2020-12-22 19:43:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:15,246 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-12-22 19:43:15,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:43:15,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-22 19:43:15,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:15,248 INFO L225 Difference]: With dead ends: 31 [2020-12-22 19:43:15,248 INFO L226 Difference]: Without dead ends: 31 [2020-12-22 19:43:15,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:43:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-22 19:43:15,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-12-22 19:43:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 19:43:15,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-22 19:43:15,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2020-12-22 19:43:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:15,255 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-22 19:43:15,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:43:15,255 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-22 19:43:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:43:15,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:15,256 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:15,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:43:15,257 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:15,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:15,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139287, now seen corresponding path program 1 times [2020-12-22 19:43:15,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:15,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741391124] [2020-12-22 19:43:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:15,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741391124] [2020-12-22 19:43:15,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783832859] [2020-12-22 19:43:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:15,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 19:43:15,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:15,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:15,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 19:43:15,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779000820] [2020-12-22 19:43:15,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 19:43:15,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 19:43:15,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:15,449 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2020-12-22 19:43:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:15,490 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-12-22 19:43:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:43:15,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-22 19:43:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:15,492 INFO L225 Difference]: With dead ends: 33 [2020-12-22 19:43:15,493 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 19:43:15,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:43:15,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 19:43:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-12-22 19:43:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 19:43:15,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-22 19:43:15,498 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 19 [2020-12-22 19:43:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:15,499 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-22 19:43:15,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 19:43:15,499 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-22 19:43:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:43:15,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:15,500 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:15,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:15,715 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:15,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:15,717 INFO L82 PathProgramCache]: Analyzing trace with hash -622418399, now seen corresponding path program 2 times [2020-12-22 19:43:15,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:15,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752703970] [2020-12-22 19:43:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:15,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752703970] [2020-12-22 19:43:15,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599230439] [2020-12-22 19:43:15,832 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 19:43:15,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 19:43:15,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:15,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 19:43:15,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:15,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:15,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 19:43:15,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382857189] [2020-12-22 19:43:15,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 19:43:15,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:15,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 19:43:15,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:15,989 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 9 states. [2020-12-22 19:43:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:16,056 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-12-22 19:43:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:43:16,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 19:43:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:16,058 INFO L225 Difference]: With dead ends: 36 [2020-12-22 19:43:16,059 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 19:43:16,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:43:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 19:43:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-12-22 19:43:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 19:43:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-12-22 19:43:16,076 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 22 [2020-12-22 19:43:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:16,077 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-12-22 19:43:16,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 19:43:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-12-22 19:43:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:43:16,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:16,079 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:16,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:16,293 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:16,294 INFO L82 PathProgramCache]: Analyzing trace with hash -603654487, now seen corresponding path program 3 times [2020-12-22 19:43:16,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:16,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663817613] [2020-12-22 19:43:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:16,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663817613] [2020-12-22 19:43:16,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949146122] [2020-12-22 19:43:16,380 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 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 19:43:16,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-22 19:43:16,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:16,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 19:43:16,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:16,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:16,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-22 19:43:16,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178597360] [2020-12-22 19:43:16,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 19:43:16,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:16,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 19:43:16,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:16,530 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 10 states. [2020-12-22 19:43:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:16,591 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-22 19:43:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 19:43:16,591 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-12-22 19:43:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:16,592 INFO L225 Difference]: With dead ends: 39 [2020-12-22 19:43:16,592 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 19:43:16,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 19:43:16,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 19:43:16,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-12-22 19:43:16,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 19:43:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-22 19:43:16,597 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 25 [2020-12-22 19:43:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:16,598 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-22 19:43:16,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 19:43:16,598 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-22 19:43:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:43:16,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:16,599 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:16,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:16,812 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:16,814 INFO L82 PathProgramCache]: Analyzing trace with hash 46299425, now seen corresponding path program 4 times [2020-12-22 19:43:16,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:16,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026602088] [2020-12-22 19:43:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:16,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026602088] [2020-12-22 19:43:16,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475451744] [2020-12-22 19:43:16,909 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 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 19:43:16,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 19:43:16,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:16,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 19:43:16,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:17,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:17,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-22 19:43:17,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349883790] [2020-12-22 19:43:17,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 19:43:17,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:17,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 19:43:17,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:17,073 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 11 states. [2020-12-22 19:43:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:17,132 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-12-22 19:43:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 19:43:17,133 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-22 19:43:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:17,134 INFO L225 Difference]: With dead ends: 42 [2020-12-22 19:43:17,134 INFO L226 Difference]: Without dead ends: 42 [2020-12-22 19:43:17,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:43:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-22 19:43:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-12-22 19:43:17,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 19:43:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-22 19:43:17,138 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 28 [2020-12-22 19:43:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:17,139 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-22 19:43:17,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 19:43:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-22 19:43:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:43:17,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:17,140 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:17,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 19:43:17,356 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1110721449, now seen corresponding path program 5 times [2020-12-22 19:43:17,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:17,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830413267] [2020-12-22 19:43:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:17,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830413267] [2020-12-22 19:43:17,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368186719] [2020-12-22 19:43:17,466 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 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 19:43:17,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-22 19:43:17,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:17,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 19:43:17,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:17,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:17,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-22 19:43:17,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435487340] [2020-12-22 19:43:17,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 19:43:17,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:17,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 19:43:17,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:43:17,611 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 12 states. [2020-12-22 19:43:17,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:17,670 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-12-22 19:43:17,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 19:43:17,671 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-12-22 19:43:17,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:17,672 INFO L225 Difference]: With dead ends: 45 [2020-12-22 19:43:17,672 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:43:17,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-22 19:43:17,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:43:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-12-22 19:43:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 19:43:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-12-22 19:43:17,676 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 31 [2020-12-22 19:43:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:17,677 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-12-22 19:43:17,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 19:43:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-12-22 19:43:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:43:17,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:17,678 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:17,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 19:43:17,893 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1563692065, now seen corresponding path program 6 times [2020-12-22 19:43:17,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:17,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961828499] [2020-12-22 19:43:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:43:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:18,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961828499] [2020-12-22 19:43:18,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412446688] [2020-12-22 19:43:18,020 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 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 19:43:18,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-22 19:43:18,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 19:43:18,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 19:43:18,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 19:43:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:43:18,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 19:43:18,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-22 19:43:18,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896154842] [2020-12-22 19:43:18,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 19:43:18,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:43:18,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 19:43:18,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:43:18,194 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 13 states. [2020-12-22 19:43:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:43:18,265 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-12-22 19:43:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 19:43:18,266 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-12-22 19:43:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:43:18,266 INFO L225 Difference]: With dead ends: 46 [2020-12-22 19:43:18,267 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 19:43:18,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-22 19:43:18,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 19:43:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-22 19:43:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 19:43:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-22 19:43:18,271 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 34 [2020-12-22 19:43:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:43:18,271 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-22 19:43:18,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 19:43:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-22 19:43:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 19:43:18,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:43:18,272 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:43:18,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 19:43:18,486 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 19:43:18,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:43:18,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1224069289, now seen corresponding path program 7 times [2020-12-22 19:43:18,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:43:18,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354471239] [2020-12-22 19:43:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:43:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:43:18,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:43:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:43:18,545 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:43:18,576 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:43:18,576 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:43:18,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:43:18,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:43:18 BoogieIcfgContainer [2020-12-22 19:43:18,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:43:18,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:43:18,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:43:18,616 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:43:18,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:43:13" (3/4) ... [2020-12-22 19:43:18,624 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 19:43:18,689 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety-ext3/getNumbers1-1.c-witness.graphml [2020-12-22 19:43:18,689 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:43:18,691 INFO L168 Benchmark]: Toolchain (without parser) took 6571.18 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 125.8 MB in the beginning and 149.9 MB in the end (delta: -24.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:18,691 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:43:18,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 116.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:18,693 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:18,693 INFO L168 Benchmark]: Boogie Preprocessor took 64.15 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 114.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:18,694 INFO L168 Benchmark]: RCFGBuilder took 616.08 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 100.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:18,694 INFO L168 Benchmark]: TraceAbstraction took 5476.23 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 100.4 MB in the beginning and 153.0 MB in the end (delta: -52.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:43:18,695 INFO L168 Benchmark]: Witness Printer took 73.45 ms. Allocated memory is still 186.6 MB. Free memory was 152.5 MB in the beginning and 149.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:43:18,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 116.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.15 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 114.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 616.08 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 100.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5476.23 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 100.4 MB in the beginning and 153.0 MB in the end (delta: -52.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 73.45 ms. Allocated memory is still 186.6 MB. Free memory was 152.5 MB in the beginning and 149.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L8] int *array = alloca(10 * sizeof(int)); [L10] int i = 0; [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND FALSE !(i < 10) [L14] return array; [L19] int *numbers = getNumbers(); [L21] int i = 0; [L21] COND TRUE i < 10 [L22] numbers + i - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 149 SDtfs, 140 SDslu, 585 SDs, 0 SdLazy, 295 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 26838 SizeOfPredicates, 2 NumberOfNonLiveVariables, 748 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 22/824 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...