/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/array-memsafety/openbsd_cmemrchr-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:56:54,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:56:54,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:56:54,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:56:54,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:56:54,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:56:54,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:56:54,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:56:54,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:56:54,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:56:54,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:56:54,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:56:54,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:56:54,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:56:54,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:56:54,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:56:54,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:56:54,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:56:54,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:56:54,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:56:54,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:56:54,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:56:54,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:56:54,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:56:54,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 18:56:54,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 18:56:54,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 18:56:54,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 18:56:54,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 18:56:54,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 18:56:54,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 18:56:54,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 18:56:54,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 18:56:54,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:56:54,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:56:54,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:56:54,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 18:56:54,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:56:54,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:56:54,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:56:54,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:56:54,513 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:56:54,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:56:54,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 18:56:54,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:56:54,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:56:54,514 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 18:56:54,515 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 18:56:54,515 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 18:56:54,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:56:54,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 18:56:54,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:56:54,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:56:54,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:56:54,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:56:54,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:56:54,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:56:54,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:56:54,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:56:54,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:56:54,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:56:54,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:56:54,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:56:54,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:56:54,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:56:54,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:56:54,945 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:56:54,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2020-12-22 18:56:55,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92d6f815/c8829d90ce27450abb0111b5f534405a/FLAGa5d70eb4d [2020-12-22 18:56:55,775 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:56:55,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2020-12-22 18:56:55,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92d6f815/c8829d90ce27450abb0111b5f534405a/FLAGa5d70eb4d [2020-12-22 18:56:56,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92d6f815/c8829d90ce27450abb0111b5f534405a [2020-12-22 18:56:56,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:56:56,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:56:56,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:56:56,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:56:56,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:56:56,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249ed3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56, skipping insertion in model container [2020-12-22 18:56:56,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:56:56,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:56:56,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:56:56,582 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:56:56,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:56:56,691 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:56:56,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56 WrapperNode [2020-12-22 18:56:56,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:56:56,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:56:56,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:56:56,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:56:56,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:56:56,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:56:56,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:56:56,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:56:56,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (1/1) ... [2020-12-22 18:56:56,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:56:56,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:56:56,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:56:56,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:56:56,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (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 18:56:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:56:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:56:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:56:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:56:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:56:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:56:57,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:56:57,168 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 18:56:57,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:57 BoogieIcfgContainer [2020-12-22 18:56:57,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:56:57,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:56:57,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:56:57,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:56:57,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:56" (1/3) ... [2020-12-22 18:56:57,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f252fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:57, skipping insertion in model container [2020-12-22 18:56:57,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:56" (2/3) ... [2020-12-22 18:56:57,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f252fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:57, skipping insertion in model container [2020-12-22 18:56:57,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:57" (3/3) ... [2020-12-22 18:56:57,179 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2020-12-22 18:56:57,186 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:56:57,192 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 18:56:57,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 18:56:57,245 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:56:57,245 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 18:56:57,245 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:56:57,246 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:56:57,246 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:56:57,246 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:56:57,247 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:56:57,247 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:56:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-12-22 18:56:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 18:56:57,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:57,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:57,302 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:56:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:57,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2020-12-22 18:56:57,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:57,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327509546] [2020-12-22 18:56:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:57,649 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 18:56:57,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327509546] [2020-12-22 18:56:57,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:57,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:56:57,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795127606] [2020-12-22 18:56:57,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:56:57,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:57,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:56:57,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:56:57,676 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-12-22 18:56:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:57,718 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2020-12-22 18:56:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:56:57,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 18:56:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:57,729 INFO L225 Difference]: With dead ends: 25 [2020-12-22 18:56:57,729 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 18:56:57,731 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 18:56:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 18:56:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 18:56:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 18:56:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-12-22 18:56:57,771 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 7 [2020-12-22 18:56:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:57,771 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-12-22 18:56:57,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:56:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2020-12-22 18:56:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 18:56:57,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:57,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:57,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:56:57,773 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:56:57,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:57,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2020-12-22 18:56:57,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:57,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719803571] [2020-12-22 18:56:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:57,970 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 18:56:57,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719803571] [2020-12-22 18:56:57,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:57,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:56:57,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023973712] [2020-12-22 18:56:57,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:56:57,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:57,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:56:57,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:56:57,977 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 5 states. [2020-12-22 18:56:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:58,058 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-12-22 18:56:58,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:56:58,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-22 18:56:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:58,061 INFO L225 Difference]: With dead ends: 27 [2020-12-22 18:56:58,062 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 18:56:58,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:56:58,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 18:56:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-12-22 18:56:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 18:56:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-12-22 18:56:58,071 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 7 [2020-12-22 18:56:58,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:58,072 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-12-22 18:56:58,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:56:58,073 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-12-22 18:56:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 18:56:58,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:58,074 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:58,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:56:58,074 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:56:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:58,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1906083540, now seen corresponding path program 1 times [2020-12-22 18:56:58,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:58,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225244082] [2020-12-22 18:56:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:58,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225244082] [2020-12-22 18:56:58,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773836958] [2020-12-22 18:56:58,210 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 18:56:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:58,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:56:58,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:56:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:58,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:56:58,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-12-22 18:56:58,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759100279] [2020-12-22 18:56:58,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:56:58,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:58,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:56:58,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:56:58,436 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 5 states. [2020-12-22 18:56:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:58,471 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-12-22 18:56:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:56:58,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 18:56:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:58,473 INFO L225 Difference]: With dead ends: 44 [2020-12-22 18:56:58,473 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 18:56:58,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:56:58,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 18:56:58,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-22 18:56:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 18:56:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-12-22 18:56:58,480 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2020-12-22 18:56:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:58,480 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-12-22 18:56:58,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:56:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-12-22 18:56:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 18:56:58,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:58,481 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:58,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 18:56:58,696 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:56:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1579537130, now seen corresponding path program 1 times [2020-12-22 18:56:58,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:58,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051767087] [2020-12-22 18:56:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:58,814 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 18:56:58,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051767087] [2020-12-22 18:56:58,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747174576] [2020-12-22 18:56:58,815 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 18:56:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:58,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 18:56:58,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:56:58,938 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 18:56:58,939 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:56:58,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:56:58,950 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:56:58,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 18:56:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:59,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:56:59,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 18:56:59,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741738137] [2020-12-22 18:56:59,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:56:59,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:59,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:56:59,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:56:59,042 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-12-22 18:56:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:59,106 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-12-22 18:56:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:56:59,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 18:56:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:59,108 INFO L225 Difference]: With dead ends: 32 [2020-12-22 18:56:59,109 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 18:56:59,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:56:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 18:56:59,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-12-22 18:56:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 18:56:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-12-22 18:56:59,114 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 11 [2020-12-22 18:56:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:59,115 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-12-22 18:56:59,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:56:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-12-22 18:56:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 18:56:59,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:59,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:59,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:56:59,332 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:56:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:59,334 INFO L82 PathProgramCache]: Analyzing trace with hash -373722351, now seen corresponding path program 1 times [2020-12-22 18:56:59,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:59,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921517579] [2020-12-22 18:56:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:56:59,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921517579] [2020-12-22 18:56:59,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:56:59,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:56:59,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113834705] [2020-12-22 18:56:59,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:56:59,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:56:59,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:56:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:56:59,437 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 6 states. [2020-12-22 18:56:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:56:59,522 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-12-22 18:56:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:56:59,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-22 18:56:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:56:59,524 INFO L225 Difference]: With dead ends: 30 [2020-12-22 18:56:59,524 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 18:56:59,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:56:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 18:56:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-12-22 18:56:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 18:56:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-12-22 18:56:59,535 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 14 [2020-12-22 18:56:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:56:59,536 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-12-22 18:56:59,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:56:59,536 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-12-22 18:56:59,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 18:56:59,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:56:59,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:56:59,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 18:56:59,538 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:56:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:56:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash -373722350, now seen corresponding path program 1 times [2020-12-22 18:56:59,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:56:59,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844654831] [2020-12-22 18:56:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:56:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:59,738 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 18:56:59,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844654831] [2020-12-22 18:56:59,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021650536] [2020-12-22 18:56:59,739 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 18:56:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:56:59,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 18:56:59,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:57:01,882 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 18:57:01,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:57:01,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-12-22 18:57:01,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933531993] [2020-12-22 18:57:01,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 18:57:01,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:57:01,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 18:57:01,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-22 18:57:01,886 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 12 states. [2020-12-22 18:57:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:57:02,399 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-12-22 18:57:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 18:57:02,400 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-12-22 18:57:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:57:02,401 INFO L225 Difference]: With dead ends: 57 [2020-12-22 18:57:02,401 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 18:57:02,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-12-22 18:57:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 18:57:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32. [2020-12-22 18:57:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 18:57:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-12-22 18:57:02,407 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 14 [2020-12-22 18:57:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:57:02,407 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-12-22 18:57:02,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 18:57:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-12-22 18:57:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 18:57:02,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:57:02,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:57:02,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:57:02,621 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:57:02,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:57:02,622 INFO L82 PathProgramCache]: Analyzing trace with hash 327342228, now seen corresponding path program 1 times [2020-12-22 18:57:02,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:57:02,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318773309] [2020-12-22 18:57:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:57:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:57:02,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318773309] [2020-12-22 18:57:02,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:57:02,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 18:57:02,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005927506] [2020-12-22 18:57:02,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 18:57:02,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:57:02,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 18:57:02,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:57:02,821 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 10 states. [2020-12-22 18:57:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:57:03,025 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-12-22 18:57:03,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:57:03,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-22 18:57:03,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:57:03,026 INFO L225 Difference]: With dead ends: 40 [2020-12-22 18:57:03,026 INFO L226 Difference]: Without dead ends: 40 [2020-12-22 18:57:03,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-12-22 18:57:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-22 18:57:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2020-12-22 18:57:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 18:57:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-12-22 18:57:03,031 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 14 [2020-12-22 18:57:03,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:57:03,031 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-12-22 18:57:03,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 18:57:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-12-22 18:57:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 18:57:03,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:57:03,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:57:03,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 18:57:03,033 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:57:03,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:57:03,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1558411319, now seen corresponding path program 1 times [2020-12-22 18:57:03,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:57:03,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995597243] [2020-12-22 18:57:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:57:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:03,117 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 18:57:03,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995597243] [2020-12-22 18:57:03,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008402698] [2020-12-22 18:57:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:57:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:03,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 18:57:03,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:57:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 18:57:03,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:57:03,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2020-12-22 18:57:03,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849734735] [2020-12-22 18:57:03,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:57:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:57:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:57:03,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:57:03,230 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2020-12-22 18:57:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:57:03,244 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-12-22 18:57:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:57:03,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 18:57:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:57:03,245 INFO L225 Difference]: With dead ends: 31 [2020-12-22 18:57:03,245 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 18:57:03,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:57:03,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 18:57:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-12-22 18:57:03,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 18:57:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-22 18:57:03,249 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2020-12-22 18:57:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:57:03,249 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-22 18:57:03,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:57:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-22 18:57:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 18:57:03,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:57:03,250 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:57:03,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:57:03,464 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:57:03,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:57:03,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1656754904, now seen corresponding path program 1 times [2020-12-22 18:57:03,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:57:03,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091142558] [2020-12-22 18:57:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:57:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 18:57:03,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091142558] [2020-12-22 18:57:03,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:57:03,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:57:03,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120395584] [2020-12-22 18:57:03,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:57:03,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:57:03,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:57:03,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:57:03,556 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-12-22 18:57:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:57:03,605 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-12-22 18:57:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:57:03,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-22 18:57:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:57:03,606 INFO L225 Difference]: With dead ends: 33 [2020-12-22 18:57:03,606 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 18:57:03,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:57:03,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 18:57:03,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-22 18:57:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 18:57:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-22 18:57:03,616 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 19 [2020-12-22 18:57:03,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:57:03,621 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-22 18:57:03,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:57:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-22 18:57:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 18:57:03,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:57:03,622 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:57:03,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 18:57:03,623 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:57:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:57:03,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1617144038, now seen corresponding path program 1 times [2020-12-22 18:57:03,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:57:03,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685988177] [2020-12-22 18:57:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:57:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:57:03,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685988177] [2020-12-22 18:57:03,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984660082] [2020-12-22 18:57:03,735 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 18:57:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:03,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 18:57:03,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:57:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:57:03,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:57:03,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-12-22 18:57:03,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902058088] [2020-12-22 18:57:03,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 18:57:03,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:57:03,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 18:57:03,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:57:03,866 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2020-12-22 18:57:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:57:03,968 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-22 18:57:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:57:03,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-12-22 18:57:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:57:03,971 INFO L225 Difference]: With dead ends: 34 [2020-12-22 18:57:03,972 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 18:57:03,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-22 18:57:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 18:57:03,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-12-22 18:57:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 18:57:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-12-22 18:57:03,985 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2020-12-22 18:57:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:57:03,988 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-12-22 18:57:03,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 18:57:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-12-22 18:57:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 18:57:03,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:57:03,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:57:04,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:57:04,204 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:57:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:57:04,205 INFO L82 PathProgramCache]: Analyzing trace with hash -309577815, now seen corresponding path program 2 times [2020-12-22 18:57:04,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:57:04,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631521458] [2020-12-22 18:57:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:57:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:57:04,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631521458] [2020-12-22 18:57:04,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274945391] [2020-12-22 18:57:04,432 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 18:57:04,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:57:04,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:57:04,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 18:57:04,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:57:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:57:04,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:57:04,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2020-12-22 18:57:04,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400884081] [2020-12-22 18:57:04,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 18:57:04,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:57:04,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 18:57:04,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2020-12-22 18:57:04,847 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 21 states. [2020-12-22 18:57:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:57:05,548 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-12-22 18:57:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 18:57:05,549 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 23 [2020-12-22 18:57:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:57:05,550 INFO L225 Difference]: With dead ends: 47 [2020-12-22 18:57:05,550 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 18:57:05,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2020-12-22 18:57:05,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 18:57:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-12-22 18:57:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 18:57:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-12-22 18:57:05,554 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 23 [2020-12-22 18:57:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:57:05,554 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-12-22 18:57:05,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 18:57:05,555 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-12-22 18:57:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 18:57:05,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:57:05,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:57:05,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:57:05,757 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:57:05,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:57:05,758 INFO L82 PathProgramCache]: Analyzing trace with hash -2105955092, now seen corresponding path program 3 times [2020-12-22 18:57:05,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:57:05,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303421139] [2020-12-22 18:57:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:57:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:57:06,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303421139] [2020-12-22 18:57:06,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976875981] [2020-12-22 18:57:06,080 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 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 18:57:06,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:57:06,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:57:06,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 18:57:06,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:57:06,242 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 18:57:06,243 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:57:06,252 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:57:06,254 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:57:06,254 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-22 18:57:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 18:57:06,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:57:06,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2020-12-22 18:57:06,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796308368] [2020-12-22 18:57:06,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-22 18:57:06,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:57:06,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-22 18:57:06,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2020-12-22 18:57:06,796 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 27 states. [2020-12-22 18:57:08,764 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-12-22 18:57:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:57:10,127 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-12-22 18:57:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 18:57:10,129 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2020-12-22 18:57:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:57:10,130 INFO L225 Difference]: With dead ends: 73 [2020-12-22 18:57:10,130 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 18:57:10,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=526, Invalid=3134, Unknown=0, NotChecked=0, Total=3660 [2020-12-22 18:57:10,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 18:57:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 29. [2020-12-22 18:57:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 18:57:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-12-22 18:57:10,137 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 27 [2020-12-22 18:57:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:57:10,138 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-12-22 18:57:10,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-22 18:57:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-12-22 18:57:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 18:57:10,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:57:10,144 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:57:10,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:57:10,345 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:57:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:57:10,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1540133135, now seen corresponding path program 4 times [2020-12-22 18:57:10,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:57:10,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259497246] [2020-12-22 18:57:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:57:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:57:10,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259497246] [2020-12-22 18:57:10,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28840661] [2020-12-22 18:57:10,509 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 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 18:57:10,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 18:57:10,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:57:10,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 18:57:10,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:57:10,660 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 18:57:10,660 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:57:10,665 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:57:10,666 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:57:10,666 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-22 18:57:10,715 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 13 treesize of output 9 [2020-12-22 18:57:10,716 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:57:10,720 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:57:10,721 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:57:10,721 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2020-12-22 18:57:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:57:10,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:57:10,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2020-12-22 18:57:10,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035303406] [2020-12-22 18:57:10,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 18:57:10,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:57:10,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 18:57:10,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-22 18:57:10,804 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 15 states. [2020-12-22 18:57:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:57:11,022 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-12-22 18:57:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 18:57:11,023 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-12-22 18:57:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:57:11,024 INFO L225 Difference]: With dead ends: 48 [2020-12-22 18:57:11,024 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 18:57:11,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-12-22 18:57:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 18:57:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-12-22 18:57:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 18:57:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-22 18:57:11,037 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2020-12-22 18:57:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:57:11,041 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-22 18:57:11,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 18:57:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-22 18:57:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 18:57:11,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:57:11,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:57:11,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 18:57:11,260 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-22 18:57:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:57:11,261 INFO L82 PathProgramCache]: Analyzing trace with hash 884722574, now seen corresponding path program 5 times [2020-12-22 18:57:11,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:57:11,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995861031] [2020-12-22 18:57:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:57:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:57:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 18:57:11,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995861031] [2020-12-22 18:57:11,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192432103] [2020-12-22 18:57:11,592 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 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 18:57:11,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-22 18:57:11,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:57:11,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-22 18:57:11,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:57:11,706 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 18:57:11,707 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:57:11,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:57:11,715 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:57:11,716 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-22 18:57:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:57:12,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:57:12,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2020-12-22 18:57:12,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946078734] [2020-12-22 18:57:12,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 18:57:12,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:57:12,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 18:57:12,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2020-12-22 18:57:12,236 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 25 states. [2020-12-22 18:57:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:57:13,918 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-12-22 18:57:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 18:57:13,919 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2020-12-22 18:57:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:57:13,920 INFO L225 Difference]: With dead ends: 38 [2020-12-22 18:57:13,920 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 18:57:13,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=283, Invalid=1277, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 18:57:13,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 18:57:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 18:57:13,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 18:57:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 18:57:13,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-22 18:57:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:57:13,923 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 18:57:13,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 18:57:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 18:57:13,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 18:57:14,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:57:14,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:57:14 BoogieIcfgContainer [2020-12-22 18:57:14,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 18:57:14,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 18:57:14,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 18:57:14,163 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 18:57:14,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:57" (3/4) ... [2020-12-22 18:57:14,167 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 18:57:14,179 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-22 18:57:14,179 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 18:57:14,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 18:57:14,245 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/openbsd_cmemrchr-alloca-2.i-witness.graphml [2020-12-22 18:57:14,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 18:57:14,249 INFO L168 Benchmark]: Toolchain (without parser) took 18155.05 ms. Allocated memory was 157.3 MB in the beginning and 272.6 MB in the end (delta: 115.3 MB). Free memory was 131.9 MB in the beginning and 250.4 MB in the end (delta: -118.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 18:57:14,249 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 18:57:14,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.02 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 111.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-22 18:57:14,250 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 157.3 MB. Free memory was 111.1 MB in the beginning and 109.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 18:57:14,251 INFO L168 Benchmark]: Boogie Preprocessor took 29.74 ms. Allocated memory is still 157.3 MB. Free memory was 109.4 MB in the beginning and 108.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 18:57:14,251 INFO L168 Benchmark]: RCFGBuilder took 395.42 ms. Allocated memory is still 157.3 MB. Free memory was 108.1 MB in the beginning and 127.9 MB in the end (delta: -19.8 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. [2020-12-22 18:57:14,251 INFO L168 Benchmark]: TraceAbstraction took 16990.82 ms. Allocated memory was 157.3 MB in the beginning and 272.6 MB in the end (delta: 115.3 MB). Free memory was 127.4 MB in the beginning and 253.1 MB in the end (delta: -125.8 MB). Peak memory consumption was 145.9 MB. Max. memory is 8.0 GB. [2020-12-22 18:57:14,252 INFO L168 Benchmark]: Witness Printer took 82.79 ms. Allocated memory is still 272.6 MB. Free memory was 253.1 MB in the beginning and 250.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 18:57:14,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 597.02 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 111.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 157.3 MB. Free memory was 111.1 MB in the beginning and 109.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.74 ms. Allocated memory is still 157.3 MB. Free memory was 109.4 MB in the beginning and 108.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 395.42 ms. Allocated memory is still 157.3 MB. Free memory was 108.1 MB in the beginning and 127.9 MB in the end (delta: -19.8 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16990.82 ms. Allocated memory was 157.3 MB in the beginning and 272.6 MB in the end (delta: 115.3 MB). Free memory was 127.4 MB in the beginning and 253.1 MB in the end (delta: -125.8 MB). Peak memory consumption was 145.9 MB. Max. memory is 8.0 GB. * Witness Printer took 82.79 ms. Allocated memory is still 272.6 MB. Free memory was 253.1 MB in the beginning and 250.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.9s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 238 SDtfs, 712 SDslu, 1149 SDs, 0 SdLazy, 1860 SolverSat, 186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 137 SyntacticMatches, 4 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 117 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 421 NumberOfCodeBlocks, 413 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 398 ConstructedInterpolants, 1 QuantifiedInterpolants, 84686 SizeOfPredicates, 71 NumberOfNonLiveVariables, 830 ConjunctsInSsa, 216 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 58/151 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...