/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/termination-crafted/LexIndexValue-Array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:08:33,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:08:33,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:08:33,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:08:33,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:08:33,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:08:33,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:08:33,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:08:33,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:08:33,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:08:33,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:08:33,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:08:33,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:08:33,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:08:33,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:08:33,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:08:33,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:08:33,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:08:33,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:08:33,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:08:33,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:08:33,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:08:33,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:08:33,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:08:33,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:08:33,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:08:33,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:08:33,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:08:33,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:08:33,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:08:33,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:08:33,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:08:33,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:08:33,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:08:33,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:08:33,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:08:33,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:08:33,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:08:33,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:08:33,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:08:33,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:08:33,355 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:08:33,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:08:33,356 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:08:33,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:08:33,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:08:33,356 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:08:33,358 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:08:33,358 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:08:33,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:08:33,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:08:33,359 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:08:33,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:08:33,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:08:33,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:08:33,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:08:33,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:08:33,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:08:33,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:08:33,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:08:33,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:08:33,361 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:08:33,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:08:33,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:08:33,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:08:33,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:08:33,842 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:08:33,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2021-01-07 05:08:33,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0535dc0a5/863d77a5a65248ff8c9d416fddf4502d/FLAG152da7903 [2021-01-07 05:08:34,665 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:08:34,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2021-01-07 05:08:34,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0535dc0a5/863d77a5a65248ff8c9d416fddf4502d/FLAG152da7903 [2021-01-07 05:08:35,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0535dc0a5/863d77a5a65248ff8c9d416fddf4502d [2021-01-07 05:08:35,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:08:35,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:08:35,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:35,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:08:35,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:08:35,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5880ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35, skipping insertion in model container [2021-01-07 05:08:35,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:08:35,067 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] [2021-01-07 05:08:35,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:35,244 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] [2021-01-07 05:08:35,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:35,293 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:08:35,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35 WrapperNode [2021-01-07 05:08:35,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:35,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:35,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:08:35,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:08:35,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:35,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:08:35,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:08:35,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:08:35,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... [2021-01-07 05:08:35,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:08:35,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:08:35,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:08:35,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:08:35,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:35,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:08:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:08:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:08:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:08:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:08:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:08:35,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:08:35,999 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-01-07 05:08:36,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:36 BoogieIcfgContainer [2021-01-07 05:08:36,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:08:36,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:08:36,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:08:36,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:08:36,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:08:35" (1/3) ... [2021-01-07 05:08:36,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d5c432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:36, skipping insertion in model container [2021-01-07 05:08:36,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:35" (2/3) ... [2021-01-07 05:08:36,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d5c432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:36, skipping insertion in model container [2021-01-07 05:08:36,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:36" (3/3) ... [2021-01-07 05:08:36,026 INFO L111 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2021-01-07 05:08:36,033 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:08:36,038 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2021-01-07 05:08:36,062 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-01-07 05:08:36,089 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:08:36,090 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:08:36,090 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:08:36,090 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:08:36,090 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:08:36,090 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:08:36,091 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:08:36,091 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:08:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2021-01-07 05:08:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:08:36,117 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:36,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:08:36,118 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:36,126 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-01-07 05:08:36,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:36,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024388591] [2021-01-07 05:08:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:36,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024388591] [2021-01-07 05:08:36,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:36,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:36,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177211074] [2021-01-07 05:08:36,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:36,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:36,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:36,371 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2021-01-07 05:08:36,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:36,477 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-01-07 05:08:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:36,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:08:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:36,492 INFO L225 Difference]: With dead ends: 25 [2021-01-07 05:08:36,494 INFO L226 Difference]: Without dead ends: 23 [2021-01-07 05:08:36,499 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 [2021-01-07 05:08:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-07 05:08:36,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-07 05:08:36,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-07 05:08:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-01-07 05:08:36,558 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4 [2021-01-07 05:08:36,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:36,558 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-01-07 05:08:36,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-01-07 05:08:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:08:36,560 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:36,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:08:36,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:08:36,561 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:36,565 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-01-07 05:08:36,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:36,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310469954] [2021-01-07 05:08:36,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:36,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310469954] [2021-01-07 05:08:36,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:36,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:36,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222120966] [2021-01-07 05:08:36,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:36,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:36,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:36,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:36,724 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2021-01-07 05:08:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:36,782 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-01-07 05:08:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:36,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:08:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:36,783 INFO L225 Difference]: With dead ends: 27 [2021-01-07 05:08:36,784 INFO L226 Difference]: Without dead ends: 27 [2021-01-07 05:08:36,785 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 [2021-01-07 05:08:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-07 05:08:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-01-07 05:08:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-07 05:08:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-01-07 05:08:36,790 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 4 [2021-01-07 05:08:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:36,791 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-01-07 05:08:36,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-01-07 05:08:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:08:36,792 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:36,792 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:36,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:08:36,792 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:36,793 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2021-01-07 05:08:36,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:36,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171435082] [2021-01-07 05:08:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:36,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171435082] [2021-01-07 05:08:36,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684966675] [2021-01-07 05:08:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:36,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:36,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:37,030 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 [2021-01-07 05:08:37,031 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:37,039 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:37,041 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:37,042 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:08:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:37,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:37,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-01-07 05:08:37,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858306496] [2021-01-07 05:08:37,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:08:37,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:37,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:08:37,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:08:37,089 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2021-01-07 05:08:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:37,169 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-01-07 05:08:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:37,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-07 05:08:37,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:37,171 INFO L225 Difference]: With dead ends: 31 [2021-01-07 05:08:37,171 INFO L226 Difference]: Without dead ends: 31 [2021-01-07 05:08:37,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:08:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-01-07 05:08:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-01-07 05:08:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-07 05:08:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-01-07 05:08:37,178 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 8 [2021-01-07 05:08:37,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:37,178 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-01-07 05:08:37,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:08:37,178 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-01-07 05:08:37,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:08:37,180 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:37,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:37,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 05:08:37,395 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:37,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:37,397 INFO L82 PathProgramCache]: Analyzing trace with hash 502834590, now seen corresponding path program 1 times [2021-01-07 05:08:37,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:37,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909492650] [2021-01-07 05:08:37,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:08:37,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909492650] [2021-01-07 05:08:37,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:37,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:37,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570916363] [2021-01-07 05:08:37,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:37,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:37,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:37,490 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2021-01-07 05:08:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:37,531 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-01-07 05:08:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:37,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-07 05:08:37,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:37,533 INFO L225 Difference]: With dead ends: 42 [2021-01-07 05:08:37,534 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:08:37,538 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 [2021-01-07 05:08:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:08:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-01-07 05:08:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-07 05:08:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-01-07 05:08:37,554 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 18 [2021-01-07 05:08:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:37,555 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-01-07 05:08:37,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:37,555 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-01-07 05:08:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:08:37,558 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:37,558 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:37,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:08:37,559 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:37,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2107076191, now seen corresponding path program 1 times [2021-01-07 05:08:37,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:37,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041589235] [2021-01-07 05:08:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:08:37,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041589235] [2021-01-07 05:08:37,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:37,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:08:37,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121434933] [2021-01-07 05:08:37,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:37,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:37,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:37,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:08:37,697 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2021-01-07 05:08:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:37,792 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-01-07 05:08:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:08:37,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-01-07 05:08:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:37,795 INFO L225 Difference]: With dead ends: 44 [2021-01-07 05:08:37,795 INFO L226 Difference]: Without dead ends: 44 [2021-01-07 05:08:37,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:08:37,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-01-07 05:08:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-01-07 05:08:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-07 05:08:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-01-07 05:08:37,802 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 20 [2021-01-07 05:08:37,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:37,802 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-01-07 05:08:37,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:37,803 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-01-07 05:08:37,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:08:37,804 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:37,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:37,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:08:37,805 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:37,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2143463652, now seen corresponding path program 1 times [2021-01-07 05:08:37,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:37,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415965872] [2021-01-07 05:08:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:37,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415965872] [2021-01-07 05:08:37,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037625570] [2021-01-07 05:08:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:37,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:08:37,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:38,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:38,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-07 05:08:38,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086127435] [2021-01-07 05:08:38,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:08:38,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:38,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:08:38,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:38,040 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 7 states. [2021-01-07 05:08:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:38,070 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-01-07 05:08:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:38,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-07 05:08:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:38,071 INFO L225 Difference]: With dead ends: 48 [2021-01-07 05:08:38,072 INFO L226 Difference]: Without dead ends: 48 [2021-01-07 05:08:38,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-07 05:08:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2021-01-07 05:08:38,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-07 05:08:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-01-07 05:08:38,077 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 22 [2021-01-07 05:08:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:38,077 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-01-07 05:08:38,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:08:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-01-07 05:08:38,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:08:38,079 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:38,079 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:38,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:38,293 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:38,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:38,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1960737113, now seen corresponding path program 2 times [2021-01-07 05:08:38,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:38,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715195225] [2021-01-07 05:08:38,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:38,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715195225] [2021-01-07 05:08:38,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467541652] [2021-01-07 05:08:38,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:38,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:08:38,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:38,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:08:38,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:08:38,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:38,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-01-07 05:08:38,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182438010] [2021-01-07 05:08:38,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:38,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:38,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:38,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:38,495 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 4 states. [2021-01-07 05:08:38,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:38,530 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-01-07 05:08:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:08:38,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2021-01-07 05:08:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:38,532 INFO L225 Difference]: With dead ends: 44 [2021-01-07 05:08:38,532 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:08:38,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:08:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-01-07 05:08:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-07 05:08:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-01-07 05:08:38,537 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 26 [2021-01-07 05:08:38,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:38,538 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-01-07 05:08:38,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:38,538 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-01-07 05:08:38,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:08:38,539 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:38,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:38,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:38,753 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:38,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1223644728, now seen corresponding path program 1 times [2021-01-07 05:08:38,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:38,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383357064] [2021-01-07 05:08:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:08:38,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383357064] [2021-01-07 05:08:38,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114701993] [2021-01-07 05:08:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:38,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:08:38,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:08:38,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:38,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-07 05:08:38,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465620027] [2021-01-07 05:08:38,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:08:38,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:38,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:08:38,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:08:38,926 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 8 states. [2021-01-07 05:08:38,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:38,959 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-01-07 05:08:38,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:08:38,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-01-07 05:08:38,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:38,961 INFO L225 Difference]: With dead ends: 49 [2021-01-07 05:08:38,961 INFO L226 Difference]: Without dead ends: 49 [2021-01-07 05:08:38,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:08:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-07 05:08:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2021-01-07 05:08:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-07 05:08:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-01-07 05:08:38,966 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 28 [2021-01-07 05:08:38,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:38,966 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-01-07 05:08:38,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:08:38,967 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-01-07 05:08:38,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-07 05:08:38,968 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:38,968 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:39,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:39,183 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:39,185 INFO L82 PathProgramCache]: Analyzing trace with hash -497838661, now seen corresponding path program 2 times [2021-01-07 05:08:39,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:39,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227921327] [2021-01-07 05:08:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:08:39,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227921327] [2021-01-07 05:08:39,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069101163] [2021-01-07 05:08:39,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:39,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:39,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:39,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:08:39,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:08:39,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:39,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-07 05:08:39,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915219132] [2021-01-07 05:08:39,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:08:39,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:39,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:08:39,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:39,524 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 9 states. [2021-01-07 05:08:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:39,579 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2021-01-07 05:08:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:08:39,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-01-07 05:08:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:39,581 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:08:39,581 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:08:39,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:39,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:08:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-01-07 05:08:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-07 05:08:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-01-07 05:08:39,587 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 32 [2021-01-07 05:08:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:39,588 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-01-07 05:08:39,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:08:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-01-07 05:08:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-07 05:08:39,589 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:39,589 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:39,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:39,803 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:39,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1464443970, now seen corresponding path program 3 times [2021-01-07 05:08:39,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:39,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347890070] [2021-01-07 05:08:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:08:39,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347890070] [2021-01-07 05:08:39,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123308404] [2021-01-07 05:08:39,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:39,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:08:39,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:39,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:39,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:39,980 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 [2021-01-07 05:08:39,981 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:39,986 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:39,987 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:39,988 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:08:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:08:40,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:40,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-01-07 05:08:40,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356975522] [2021-01-07 05:08:40,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:08:40,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:40,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:08:40,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:08:40,153 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2021-01-07 05:08:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:40,270 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-01-07 05:08:40,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:08:40,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2021-01-07 05:08:40,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:40,271 INFO L225 Difference]: With dead ends: 50 [2021-01-07 05:08:40,272 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:08:40,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:08:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:08:40,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:08:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:08:40,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:08:40,273 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-01-07 05:08:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:40,273 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:08:40,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:08:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:08:40,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:08:40,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:40,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:08:40 BoogieIcfgContainer [2021-01-07 05:08:40,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:08:40,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:08:40,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:08:40,496 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:08:40,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:36" (3/4) ... [2021-01-07 05:08:40,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:08:40,513 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-01-07 05:08:40,513 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-01-07 05:08:40,513 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-01-07 05:08:40,568 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/termination-crafted/LexIndexValue-Array-1.c-witness.graphml [2021-01-07 05:08:40,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:08:40,573 INFO L168 Benchmark]: Toolchain (without parser) took 5548.51 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.3 MB in the beginning and 78.3 MB in the end (delta: 48.1 MB). Peak memory consumption was 79.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:40,574 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:08:40,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.60 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:40,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:40,578 INFO L168 Benchmark]: Boogie Preprocessor took 29.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 114.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:40,578 INFO L168 Benchmark]: RCFGBuilder took 631.26 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 132.7 MB in the end (delta: -18.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:40,579 INFO L168 Benchmark]: TraceAbstraction took 4486.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 132.2 MB in the beginning and 80.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 82.3 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:40,580 INFO L168 Benchmark]: Witness Printer took 72.76 ms. Allocated memory is still 181.4 MB. Free memory was 80.9 MB in the beginning and 78.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:40,591 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 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.60 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 114.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 631.26 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 132.7 MB in the end (delta: -18.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4486.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 132.2 MB in the beginning and 80.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 82.3 MB. Max. memory is 8.0 GB. * Witness Printer took 72.76 ms. Allocated memory is still 181.4 MB. Free memory was 80.9 MB in the beginning and 78.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 187 SDtfs, 160 SDslu, 305 SDs, 0 SdLazy, 238 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 15 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 350 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 334 ConstructedInterpolants, 1 QuantifiedInterpolants, 41659 SizeOfPredicates, 1 NumberOfNonLiveVariables, 371 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 142/416 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...