/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/test-0158-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:59:23,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:59:23,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:59:23,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:59:23,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:59:23,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:59:23,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:59:23,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:59:23,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:59:23,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:59:23,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:59:23,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:59:23,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:59:23,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:59:23,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:59:23,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:59:23,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:59:23,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:59:23,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:59:23,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:59:24,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:59:24,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:59:24,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:59:24,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:59:24,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:59:24,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:59:24,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:59:24,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:59:24,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:59:24,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:59:24,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:59:24,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:59:24,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:59:24,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:59:24,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:59:24,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:59:24,043 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 16:59:24,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:59:24,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:59:24,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:59:24,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:59:24,092 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:59:24,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:59:24,092 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:59:24,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:59:24,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:59:24,093 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:59:24,094 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:59:24,094 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:59:24,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:59:24,095 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:59:24,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:59:24,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:59:24,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:59:24,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:59:24,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:59:24,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:59:24,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:59:24,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:59:24,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:59:24,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:59:24,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:59:24,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:59:24,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:59:24,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:59:24,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:59:24,510 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:59:24,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-1.i [2020-12-23 16:59:24,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/eed390a12/c593a66e79974e098a7553f8456f9e45/FLAGa234f9f1d [2020-12-23 16:59:25,320 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:59:25,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-1.i [2020-12-23 16:59:25,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/eed390a12/c593a66e79974e098a7553f8456f9e45/FLAGa234f9f1d [2020-12-23 16:59:25,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/eed390a12/c593a66e79974e098a7553f8456f9e45 [2020-12-23 16:59:25,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:59:25,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:59:25,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:59:25,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:59:25,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:59:25,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:59:25" (1/1) ... [2020-12-23 16:59:25,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305343df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:25, skipping insertion in model container [2020-12-23 16:59:25,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:59:25" (1/1) ... [2020-12-23 16:59:25,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:59:25,697 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~data~0,],p0] left hand side expression in assignment: lhs: StructLHS[StructLHS[VariableLHS[~data~0,],str],p2] [2020-12-23 16:59:25,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:59:25,993 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data~0,],base],StructAccessExpression[IdentifierExpression[~#data~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[10],StructAccessExpression[IdentifierExpression[~#data~0,],offset]]]] [2020-12-23 16:59:26,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:59:26,109 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:59:26,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26 WrapperNode [2020-12-23 16:59:26,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:59:26,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:59:26,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:59:26,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:59:26,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (1/1) ... [2020-12-23 16:59:26,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (1/1) ... [2020-12-23 16:59:26,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:59:26,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:59:26,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:59:26,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:59:26,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (1/1) ... [2020-12-23 16:59:26,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (1/1) ... [2020-12-23 16:59:26,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (1/1) ... [2020-12-23 16:59:26,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (1/1) ... [2020-12-23 16:59:26,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (1/1) ... [2020-12-23 16:59:26,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (1/1) ... [2020-12-23 16:59:26,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (1/1) ... [2020-12-23 16:59:26,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:59:26,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:59:26,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:59:26,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:59:26,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (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 16:59:26,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 16:59:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 16:59:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:59:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 16:59:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:59:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 16:59:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:59:26,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:59:26,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:59:26,667 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 16:59:26,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:59:26 BoogieIcfgContainer [2020-12-23 16:59:26,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:59:26,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:59:26,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:59:26,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:59:26,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:59:25" (1/3) ... [2020-12-23 16:59:26,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403b01e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:59:26, skipping insertion in model container [2020-12-23 16:59:26,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:59:26" (2/3) ... [2020-12-23 16:59:26,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403b01e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:59:26, skipping insertion in model container [2020-12-23 16:59:26,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:59:26" (3/3) ... [2020-12-23 16:59:26,680 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2020-12-23 16:59:26,689 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:59:26,694 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-23 16:59:26,718 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-23 16:59:26,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:59:26,763 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:59:26,763 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:59:26,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:59:26,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:59:26,764 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:59:26,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:59:26,764 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:59:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-23 16:59:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 16:59:26,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:26,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 16:59:26,827 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:59:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-12-23 16:59:26,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:26,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754290741] [2020-12-23 16:59:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:27,150 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 16:59:27,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754290741] [2020-12-23 16:59:27,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:27,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:59:27,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863558730] [2020-12-23 16:59:27,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:59:27,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:27,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:59:27,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:59:27,190 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2020-12-23 16:59:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:27,276 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-12-23 16:59:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:59:27,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 16:59:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:27,297 INFO L225 Difference]: With dead ends: 18 [2020-12-23 16:59:27,297 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 16:59:27,300 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 16:59:27,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 16:59:27,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-23 16:59:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 16:59:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-23 16:59:27,352 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 3 [2020-12-23 16:59:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:27,353 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-23 16:59:27,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:59:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-23 16:59:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 16:59:27,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:27,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 16:59:27,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:59:27,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:59:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:27,361 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-12-23 16:59:27,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:27,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022815091] [2020-12-23 16:59:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:27,449 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 16:59:27,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022815091] [2020-12-23 16:59:27,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:27,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:59:27,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372251337] [2020-12-23 16:59:27,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:59:27,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:27,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:59:27,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:59:27,454 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 3 states. [2020-12-23 16:59:27,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:27,472 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-12-23 16:59:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:59:27,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 16:59:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:27,474 INFO L225 Difference]: With dead ends: 13 [2020-12-23 16:59:27,474 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 16:59:27,475 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 16:59:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 16:59:27,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-23 16:59:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-23 16:59:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-23 16:59:27,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 3 [2020-12-23 16:59:27,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:27,478 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-23 16:59:27,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:59:27,479 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-23 16:59:27,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 16:59:27,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:27,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 16:59:27,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:59:27,480 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:59:27,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:27,481 INFO L82 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2020-12-23 16:59:27,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:27,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116895951] [2020-12-23 16:59:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:27,549 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 16:59:27,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116895951] [2020-12-23 16:59:27,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:27,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:59:27,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159188306] [2020-12-23 16:59:27,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:59:27,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:27,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:59:27,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:59:27,553 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 5 states. [2020-12-23 16:59:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:27,596 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-12-23 16:59:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:59:27,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-23 16:59:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:27,598 INFO L225 Difference]: With dead ends: 12 [2020-12-23 16:59:27,598 INFO L226 Difference]: Without dead ends: 12 [2020-12-23 16:59:27,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:59:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-23 16:59:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-23 16:59:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-23 16:59:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-23 16:59:27,602 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 6 [2020-12-23 16:59:27,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:27,602 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-23 16:59:27,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:59:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-23 16:59:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:59:27,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:27,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:27,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:59:27,604 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:59:27,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:27,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1803027012, now seen corresponding path program 1 times [2020-12-23 16:59:27,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:27,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526578705] [2020-12-23 16:59:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:27,746 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 16:59:27,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526578705] [2020-12-23 16:59:27,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:27,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:59:27,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403739969] [2020-12-23 16:59:27,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:59:27,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:27,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:59:27,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:59:27,754 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2020-12-23 16:59:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:27,827 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-12-23 16:59:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:59:27,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-23 16:59:27,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:27,830 INFO L225 Difference]: With dead ends: 11 [2020-12-23 16:59:27,830 INFO L226 Difference]: Without dead ends: 11 [2020-12-23 16:59:27,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:59:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-23 16:59:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-23 16:59:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-23 16:59:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-12-23 16:59:27,838 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 7 [2020-12-23 16:59:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:27,838 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-12-23 16:59:27,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:59:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-12-23 16:59:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:59:27,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:27,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:27,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:59:27,841 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:59:27,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:27,842 INFO L82 PathProgramCache]: Analyzing trace with hash 59262571, now seen corresponding path program 1 times [2020-12-23 16:59:27,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:27,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578208344] [2020-12-23 16:59:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:27,967 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 16:59:27,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578208344] [2020-12-23 16:59:27,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:27,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:59:27,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126171322] [2020-12-23 16:59:27,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:59:27,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:27,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:59:27,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:59:27,972 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 5 states. [2020-12-23 16:59:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:28,025 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-12-23 16:59:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:59:28,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-23 16:59:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:28,027 INFO L225 Difference]: With dead ends: 10 [2020-12-23 16:59:28,028 INFO L226 Difference]: Without dead ends: 10 [2020-12-23 16:59:28,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:59:28,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-23 16:59:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-23 16:59:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-23 16:59:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-12-23 16:59:28,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 8 [2020-12-23 16:59:28,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:28,033 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-12-23 16:59:28,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:59:28,033 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-12-23 16:59:28,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:59:28,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:59:28,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:59:28,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 16:59:28,035 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:59:28,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:59:28,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1837139751, now seen corresponding path program 1 times [2020-12-23 16:59:28,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:59:28,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002086289] [2020-12-23 16:59:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:59:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:59:28,240 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 16:59:28,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002086289] [2020-12-23 16:59:28,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:59:28,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:59:28,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129287020] [2020-12-23 16:59:28,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:59:28,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:59:28,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:59:28,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:59:28,243 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 6 states. [2020-12-23 16:59:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:59:28,335 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-12-23 16:59:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:59:28,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 16:59:28,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:59:28,336 INFO L225 Difference]: With dead ends: 9 [2020-12-23 16:59:28,337 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 16:59:28,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:59:28,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 16:59:28,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 16:59:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 16:59:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 16:59:28,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-12-23 16:59:28,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:59:28,339 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 16:59:28,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:59:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 16:59:28,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 16:59:28,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:59:28,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 04:59:28 BoogieIcfgContainer [2020-12-23 16:59:28,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 16:59:28,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 16:59:28,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 16:59:28,347 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 16:59:28,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:59:26" (3/4) ... [2020-12-23 16:59:28,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 16:59:28,365 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-23 16:59:28,365 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 16:59:28,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-23 16:59:28,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 16:59:28,406 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety/test-0158-1.i-witness.graphml [2020-12-23 16:59:28,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 16:59:28,409 INFO L168 Benchmark]: Toolchain (without parser) took 2802.65 ms. Allocated memory was 157.3 MB in the beginning and 189.8 MB in the end (delta: 32.5 MB). Free memory was 130.4 MB in the beginning and 161.9 MB in the end (delta: -31.5 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:28,409 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:59:28,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 499.65 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 109.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:28,411 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.64 ms. Allocated memory is still 157.3 MB. Free memory was 109.2 MB in the beginning and 107.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:28,412 INFO L168 Benchmark]: Boogie Preprocessor took 48.19 ms. Allocated memory is still 157.3 MB. Free memory was 107.5 MB in the beginning and 106.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:28,412 INFO L168 Benchmark]: RCFGBuilder took 425.99 ms. Allocated memory is still 157.3 MB. Free memory was 106.4 MB in the beginning and 128.1 MB in the end (delta: -21.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:28,413 INFO L168 Benchmark]: TraceAbstraction took 1674.48 ms. Allocated memory was 157.3 MB in the beginning and 189.8 MB in the end (delta: 32.5 MB). Free memory was 127.6 MB in the beginning and 164.6 MB in the end (delta: -36.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:59:28,414 INFO L168 Benchmark]: Witness Printer took 60.01 ms. Allocated memory is still 189.8 MB. Free memory was 164.0 MB in the beginning and 161.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 16:59:28,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 499.65 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 109.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.64 ms. Allocated memory is still 157.3 MB. Free memory was 109.2 MB in the beginning and 107.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.19 ms. Allocated memory is still 157.3 MB. Free memory was 107.5 MB in the beginning and 106.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 425.99 ms. Allocated memory is still 157.3 MB. Free memory was 106.4 MB in the beginning and 128.1 MB in the end (delta: -21.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1674.48 ms. Allocated memory was 157.3 MB in the beginning and 189.8 MB in the end (delta: 32.5 MB). Free memory was 127.6 MB in the beginning and 164.6 MB in the end (delta: -36.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 60.01 ms. Allocated memory is still 189.8 MB. Free memory was 164.0 MB in the beginning and 161.9 MB in the end (delta: 2.1 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: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 61 SDslu, 10 SDs, 0 SdLazy, 83 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1786 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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...