/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:35:53,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:35:53,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:35:54,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:35:54,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:35:54,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:35:54,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:35:54,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:35:54,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:35:54,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:35:54,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:35:54,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:35:54,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:35:54,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:35:54,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:35:54,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:35:54,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:35:54,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:35:54,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:35:54,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:35:54,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:35:54,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:35:54,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:35:54,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:35:54,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:35:54,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:35:54,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:35:54,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:35:54,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:35:54,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:35:54,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:35:54,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:35:54,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:35:54,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:35:54,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:35:54,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:35:54,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:35:54,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:35:54,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:35:54,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:35:54,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:35:54,226 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:35:54,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:35:54,227 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:35:54,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:35:54,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:35:54,227 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:35:54,229 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:35:54,229 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:35:54,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:35:54,230 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:35:54,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:35:54,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:35:54,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:35:54,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:35:54,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:35:54,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:35:54,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:35:54,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:35:54,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:35:54,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:35:54,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:35:54,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:35:54,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:35:54,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:35:54,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:35:54,800 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:35:54,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2020-12-23 17:35:54,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f000b353/4fbdcde6f0334968a6d47995192cb16b/FLAG9a67b3d12 [2020-12-23 17:35:55,546 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:35:55,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2020-12-23 17:35:55,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f000b353/4fbdcde6f0334968a6d47995192cb16b/FLAG9a67b3d12 [2020-12-23 17:35:55,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2f000b353/4fbdcde6f0334968a6d47995192cb16b [2020-12-23 17:35:55,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:35:55,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:35:55,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:55,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:35:55,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:35:55,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:55" (1/1) ... [2020-12-23 17:35:55,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ace876c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:55, skipping insertion in model container [2020-12-23 17:35:55,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:55" (1/1) ... [2020-12-23 17:35:55,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:35:55,978 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~array~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~array~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] [2020-12-23 17:35:56,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:56,181 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~array~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~array~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] [2020-12-23 17:35:56,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:56,222 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:35:56,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56 WrapperNode [2020-12-23 17:35:56,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:56,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:56,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:35:56,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:35:56,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (1/1) ... [2020-12-23 17:35:56,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (1/1) ... [2020-12-23 17:35:56,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:56,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:35:56,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:35:56,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:35:56,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (1/1) ... [2020-12-23 17:35:56,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (1/1) ... [2020-12-23 17:35:56,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (1/1) ... [2020-12-23 17:35:56,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (1/1) ... [2020-12-23 17:35:56,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (1/1) ... [2020-12-23 17:35:56,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (1/1) ... [2020-12-23 17:35:56,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (1/1) ... [2020-12-23 17:35:56,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:35:56,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:35:56,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:35:56,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:35:56,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (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 [2020-12-23 17:35:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:35:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:35:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:35:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:35:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:35:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:35:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:35:56,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:35:56,804 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 17:35:56,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:56 BoogieIcfgContainer [2020-12-23 17:35:56,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:35:56,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:35:56,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:35:56,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:35:56,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:35:55" (1/3) ... [2020-12-23 17:35:56,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4930a0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:56, skipping insertion in model container [2020-12-23 17:35:56,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:56" (2/3) ... [2020-12-23 17:35:56,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4930a0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:56, skipping insertion in model container [2020-12-23 17:35:56,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:56" (3/3) ... [2020-12-23 17:35:56,822 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers1-1.c [2020-12-23 17:35:56,831 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:35:56,839 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 17:35:56,892 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 17:35:56,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:35:56,936 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:35:56,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:35:56,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:35:56,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:35:56,937 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:35:56,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:35:56,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:35:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-23 17:35:56,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 17:35:56,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:56,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 17:35:57,000 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:35:57,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:57,013 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-12-23 17:35:57,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:57,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377738245] [2020-12-23 17:35:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:57,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377738245] [2020-12-23 17:35:57,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:57,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:57,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428300467] [2020-12-23 17:35:57,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:57,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:57,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:57,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:57,332 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-12-23 17:35:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:57,405 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-23 17:35:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:57,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-23 17:35:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:57,418 INFO L225 Difference]: With dead ends: 19 [2020-12-23 17:35:57,418 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 17:35:57,421 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 [2020-12-23 17:35:57,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 17:35:57,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 17:35:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 17:35:57,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-23 17:35:57,463 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2020-12-23 17:35:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:57,463 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-23 17:35:57,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-23 17:35:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 17:35:57,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:57,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 17:35:57,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:35:57,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:35:57,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:57,466 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2020-12-23 17:35:57,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:57,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763799796] [2020-12-23 17:35:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:57,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763799796] [2020-12-23 17:35:57,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:57,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:57,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958631626] [2020-12-23 17:35:57,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:57,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:57,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:57,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:57,551 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2020-12-23 17:35:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:57,586 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-12-23 17:35:57,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:57,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-23 17:35:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:57,588 INFO L225 Difference]: With dead ends: 20 [2020-12-23 17:35:57,588 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 17:35:57,589 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 [2020-12-23 17:35:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 17:35:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-23 17:35:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 17:35:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-23 17:35:57,595 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2020-12-23 17:35:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:57,595 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-23 17:35:57,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:57,596 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-23 17:35:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:35:57,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:57,596 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-23 17:35:57,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:35:57,597 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:35:57,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2020-12-23 17:35:57,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:57,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875739957] [2020-12-23 17:35:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:57,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875739957] [2020-12-23 17:35:57,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878051859] [2020-12-23 17:35:57,704 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 [2020-12-23 17:35:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:57,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 17:35:57,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:35:57,874 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 [2020-12-23 17:35:57,875 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:35:57,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:35:57,887 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:35:57,888 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-23 17:35:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:57,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:35:57,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-12-23 17:35:57,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277430913] [2020-12-23 17:35:57,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:35:57,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:57,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:35:57,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:35:57,934 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2020-12-23 17:35:58,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:58,006 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-23 17:35:58,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:35:58,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-23 17:35:58,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:58,008 INFO L225 Difference]: With dead ends: 23 [2020-12-23 17:35:58,008 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 17:35:58,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:35:58,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 17:35:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 17:35:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 17:35:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-23 17:35:58,015 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2020-12-23 17:35:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:58,016 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-23 17:35:58,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:35:58,016 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-23 17:35:58,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:35:58,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:58,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:58,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 17:35:58,232 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:35:58,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:58,234 INFO L82 PathProgramCache]: Analyzing trace with hash -118451422, now seen corresponding path program 1 times [2020-12-23 17:35:58,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:58,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488480985] [2020-12-23 17:35:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:58,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488480985] [2020-12-23 17:35:58,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013398628] [2020-12-23 17:35:58,349 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 [2020-12-23 17:35:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:58,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 17:35:58,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:35:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:58,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:35:58,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-23 17:35:58,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832606583] [2020-12-23 17:35:58,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:35:58,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:58,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:35:58,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:35:58,596 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-12-23 17:35:58,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:58,692 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-12-23 17:35:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:35:58,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 17:35:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:58,694 INFO L225 Difference]: With dead ends: 28 [2020-12-23 17:35:58,694 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 17:35:58,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:35:58,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 17:35:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-12-23 17:35:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 17:35:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-12-23 17:35:58,708 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2020-12-23 17:35:58,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:58,708 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-12-23 17:35:58,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:35:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-12-23 17:35:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:58,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:58,711 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:58,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:35:58,926 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:35:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:58,927 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 2 times [2020-12-23 17:35:58,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:58,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477750720] [2020-12-23 17:35:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-23 17:35:59,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477750720] [2020-12-23 17:35:59,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:59,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:35:59,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460501227] [2020-12-23 17:35:59,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:35:59,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:59,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:35:59,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:35:59,073 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 5 states. [2020-12-23 17:35:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:59,136 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-12-23 17:35:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:35:59,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-23 17:35:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:59,138 INFO L225 Difference]: With dead ends: 31 [2020-12-23 17:35:59,138 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 17:35:59,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:35:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 17:35:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-12-23 17:35:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 17:35:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-23 17:35:59,144 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2020-12-23 17:35:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:59,145 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-23 17:35:59,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:35:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-23 17:35:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:59,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:59,146 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:59,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:35:59,147 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:35:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:59,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139287, now seen corresponding path program 1 times [2020-12-23 17:35:59,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:59,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472519035] [2020-12-23 17:35:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:59,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472519035] [2020-12-23 17:35:59,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080275733] [2020-12-23 17:35:59,252 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 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 [2020-12-23 17:35:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:59,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 17:35:59,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:35:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:59,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:35:59,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-23 17:35:59,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527691626] [2020-12-23 17:35:59,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 17:35:59,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:59,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 17:35:59,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:35:59,360 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2020-12-23 17:35:59,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:59,396 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-12-23 17:35:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:35:59,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-23 17:35:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:59,398 INFO L225 Difference]: With dead ends: 33 [2020-12-23 17:35:59,398 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 17:35:59,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:35:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 17:35:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-12-23 17:35:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 17:35:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-23 17:35:59,403 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 19 [2020-12-23 17:35:59,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:59,404 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-23 17:35:59,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 17:35:59,404 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-23 17:35:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:35:59,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:59,405 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:59,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:35:59,619 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:35:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash -622418399, now seen corresponding path program 2 times [2020-12-23 17:35:59,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:59,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200043026] [2020-12-23 17:35:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:59,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200043026] [2020-12-23 17:35:59,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038869439] [2020-12-23 17:35:59,774 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 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 [2020-12-23 17:35:59,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:35:59,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:35:59,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 17:35:59,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:35:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:59,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:35:59,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-23 17:35:59,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068202420] [2020-12-23 17:35:59,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:35:59,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:59,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:35:59,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:35:59,896 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 9 states. [2020-12-23 17:35:59,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:59,939 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-12-23 17:35:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:35:59,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-23 17:35:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:59,941 INFO L225 Difference]: With dead ends: 36 [2020-12-23 17:35:59,941 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 17:35:59,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:35:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 17:35:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-12-23 17:35:59,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 17:35:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-12-23 17:35:59,947 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 22 [2020-12-23 17:35:59,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:59,947 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-12-23 17:35:59,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:35:59,947 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-12-23 17:35:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:35:59,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:59,948 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:00,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:00,165 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:00,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:00,166 INFO L82 PathProgramCache]: Analyzing trace with hash -603654487, now seen corresponding path program 3 times [2020-12-23 17:36:00,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:00,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128537652] [2020-12-23 17:36:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:00,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128537652] [2020-12-23 17:36:00,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755537142] [2020-12-23 17:36:00,255 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 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 [2020-12-23 17:36:00,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 17:36:00,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:00,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 17:36:00,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:00,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:00,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-23 17:36:00,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433832666] [2020-12-23 17:36:00,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:36:00,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:00,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:36:00,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:36:00,463 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 10 states. [2020-12-23 17:36:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:00,521 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-23 17:36:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 17:36:00,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-12-23 17:36:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:00,523 INFO L225 Difference]: With dead ends: 39 [2020-12-23 17:36:00,523 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 17:36:00,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:36:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 17:36:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-12-23 17:36:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 17:36:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 17:36:00,529 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 25 [2020-12-23 17:36:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:00,529 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 17:36:00,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:36:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 17:36:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 17:36:00,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:00,531 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:00,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:00,745 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:00,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:00,747 INFO L82 PathProgramCache]: Analyzing trace with hash 46299425, now seen corresponding path program 4 times [2020-12-23 17:36:00,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:00,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155283302] [2020-12-23 17:36:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:00,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155283302] [2020-12-23 17:36:00,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107216523] [2020-12-23 17:36:00,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-12-23 17:36:00,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 17:36:00,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:00,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 17:36:00,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:00,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:00,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-23 17:36:00,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205244297] [2020-12-23 17:36:00,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 17:36:00,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:00,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 17:36:00,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:36:00,999 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 11 states. [2020-12-23 17:36:01,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:01,053 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-12-23 17:36:01,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 17:36:01,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-23 17:36:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:01,054 INFO L225 Difference]: With dead ends: 42 [2020-12-23 17:36:01,055 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 17:36:01,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:36:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 17:36:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-12-23 17:36:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 17:36:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-23 17:36:01,060 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 28 [2020-12-23 17:36:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:01,061 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-23 17:36:01,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 17:36:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-23 17:36:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 17:36:01,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:01,062 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:01,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:36:01,277 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:01,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1110721449, now seen corresponding path program 5 times [2020-12-23 17:36:01,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:01,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038729991] [2020-12-23 17:36:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:01,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038729991] [2020-12-23 17:36:01,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187675178] [2020-12-23 17:36:01,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:36:01,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-23 17:36:01,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:01,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 17:36:01,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:01,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:01,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-23 17:36:01,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107275581] [2020-12-23 17:36:01,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 17:36:01,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:01,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 17:36:01,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:36:01,579 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 12 states. [2020-12-23 17:36:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:01,639 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-12-23 17:36:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 17:36:01,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-12-23 17:36:01,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:01,641 INFO L225 Difference]: With dead ends: 45 [2020-12-23 17:36:01,641 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 17:36:01,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:36:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 17:36:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-12-23 17:36:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 17:36:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-12-23 17:36:01,646 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 31 [2020-12-23 17:36:01,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:01,647 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-12-23 17:36:01,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 17:36:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-12-23 17:36:01,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 17:36:01,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:01,648 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:01,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 17:36:01,863 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:01,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:01,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1563692065, now seen corresponding path program 6 times [2020-12-23 17:36:01,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:01,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349926807] [2020-12-23 17:36:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:36:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:02,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349926807] [2020-12-23 17:36:02,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359086311] [2020-12-23 17:36:02,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 17:36:02,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-23 17:36:02,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:36:02,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 17:36:02,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:36:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:36:02,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:36:02,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-23 17:36:02,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597387094] [2020-12-23 17:36:02,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 17:36:02,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:36:02,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 17:36:02,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:36:02,285 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 13 states. [2020-12-23 17:36:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:36:02,366 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-12-23 17:36:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:36:02,367 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-12-23 17:36:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:36:02,368 INFO L225 Difference]: With dead ends: 46 [2020-12-23 17:36:02,368 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 17:36:02,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:36:02,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 17:36:02,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-23 17:36:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 17:36:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 17:36:02,381 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 34 [2020-12-23 17:36:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:36:02,384 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 17:36:02,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 17:36:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 17:36:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 17:36:02,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:36:02,392 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:36:02,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 17:36:02,606 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:36:02,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:36:02,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1224069289, now seen corresponding path program 7 times [2020-12-23 17:36:02,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:36:02,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991338324] [2020-12-23 17:36:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:36:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:36:02,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:36:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:36:02,657 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:36:02,684 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 17:36:02,685 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 17:36:02,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 17:36:02,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:36:02 BoogieIcfgContainer [2020-12-23 17:36:02,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:36:02,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:36:02,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:36:02,732 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:36:02,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:56" (3/4) ... [2020-12-23 17:36:02,735 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 17:36:02,799 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety-ext3/getNumbers1-1.c-witness.graphml [2020-12-23 17:36:02,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:36:02,802 INFO L168 Benchmark]: Toolchain (without parser) took 6867.13 ms. Allocated memory was 152.0 MB in the beginning and 206.6 MB in the end (delta: 54.5 MB). Free memory was 128.1 MB in the beginning and 156.2 MB in the end (delta: -28.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:02,802 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 152.0 MB. Free memory was 124.4 MB in the beginning and 124.3 MB in the end (delta: 84.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:36:02,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.73 ms. Allocated memory is still 152.0 MB. Free memory was 128.0 MB in the beginning and 118.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:02,804 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.69 ms. Allocated memory is still 152.0 MB. Free memory was 118.7 MB in the beginning and 117.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:02,804 INFO L168 Benchmark]: Boogie Preprocessor took 32.72 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 116.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:02,805 INFO L168 Benchmark]: RCFGBuilder took 499.03 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 134.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:02,806 INFO L168 Benchmark]: TraceAbstraction took 5920.76 ms. Allocated memory was 152.0 MB in the beginning and 206.6 MB in the end (delta: 54.5 MB). Free memory was 133.9 MB in the beginning and 158.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 29.6 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:02,806 INFO L168 Benchmark]: Witness Printer took 68.49 ms. Allocated memory is still 206.6 MB. Free memory was 158.8 MB in the beginning and 156.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:36:02,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 152.0 MB. Free memory was 124.4 MB in the beginning and 124.3 MB in the end (delta: 84.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 286.73 ms. Allocated memory is still 152.0 MB. Free memory was 128.0 MB in the beginning and 118.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.69 ms. Allocated memory is still 152.0 MB. Free memory was 118.7 MB in the beginning and 117.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.72 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 116.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 499.03 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 134.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5920.76 ms. Allocated memory was 152.0 MB in the beginning and 206.6 MB in the end (delta: 54.5 MB). Free memory was 133.9 MB in the beginning and 158.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 29.6 MB. Max. memory is 8.0 GB. * Witness Printer took 68.49 ms. Allocated memory is still 206.6 MB. Free memory was 158.8 MB in the beginning and 156.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L8] int *array = alloca(10 * sizeof(int)); [L10] int i = 0; [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND TRUE i < 10 [L11] array[i] = i [L10] ++i [L10] COND FALSE !(i < 10) [L14] return array; [L19] int *numbers = getNumbers(); [L21] int i = 0; [L21] COND TRUE i < 10 [L22] numbers + i - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 149 SDtfs, 140 SDslu, 585 SDs, 0 SdLazy, 295 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 26838 SizeOfPredicates, 2 NumberOfNonLiveVariables, 748 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 22/824 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...