/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/ldv-memsafety/memset3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:24:02,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:24:02,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:24:03,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:24:03,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:24:03,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:24:03,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:24:03,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:24:03,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:24:03,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:24:03,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:24:03,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:24:03,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:24:03,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:24:03,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:24:03,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:24:03,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:24:03,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:24:03,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:24:03,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:24:03,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:24:03,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:24:03,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:24:03,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:24:03,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:24:03,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:24:03,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:24:03,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:24:03,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:24:03,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:24:03,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:24:03,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:24:03,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:24:03,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:24:03,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:24:03,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:24:03,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:24:03,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:24:03,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:24:03,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:24:03,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:24:03,227 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:24:03,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:24:03,227 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:24:03,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:24:03,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:24:03,228 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:24:03,229 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:24:03,230 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:24:03,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:24:03,230 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:24:03,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:24:03,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:24:03,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:24:03,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:24:03,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:24:03,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:24:03,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:24:03,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:24:03,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:24:03,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:24:03,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:24:03,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:24:03,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:24:03,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:24:03,691 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:24:03,696 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:24:03,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memset3.c [2021-01-07 05:24:03,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/77b735596/d0951a867eb04b6f842bf262d5b10e95/FLAG23aa7564d [2021-01-07 05:24:04,492 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:24:04,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memset3.c [2021-01-07 05:24:04,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/77b735596/d0951a867eb04b6f842bf262d5b10e95/FLAG23aa7564d [2021-01-07 05:24:04,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/77b735596/d0951a867eb04b6f842bf262d5b10e95 [2021-01-07 05:24:04,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:24:04,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:24:04,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:24:04,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:24:04,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:24:04,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:24:04" (1/1) ... [2021-01-07 05:24:04,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fb8846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:04, skipping insertion in model container [2021-01-07 05:24:04,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:24:04" (1/1) ... [2021-01-07 05:24:04,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:24:04,926 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~point~0,] [2021-01-07 05:24:05,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:24:05,141 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~point~0,] [2021-01-07 05:24:05,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:24:05,186 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:24:05,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05 WrapperNode [2021-01-07 05:24:05,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:24:05,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:24:05,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:24:05,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:24:05,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:24:05,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:24:05,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:24:05,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:24:05,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... [2021-01-07 05:24:05,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:24:05,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:24:05,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:24:05,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:24:05,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:24:05,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:24:05,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:24:05,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:24:05,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:24:05,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:24:05,701 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-01-07 05:24:05,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:24:05 BoogieIcfgContainer [2021-01-07 05:24:05,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:24:05,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:24:05,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:24:05,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:24:05,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:24:04" (1/3) ... [2021-01-07 05:24:05,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706456a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:24:05, skipping insertion in model container [2021-01-07 05:24:05,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:24:05" (2/3) ... [2021-01-07 05:24:05,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706456a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:24:05, skipping insertion in model container [2021-01-07 05:24:05,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:24:05" (3/3) ... [2021-01-07 05:24:05,717 INFO L111 eAbstractionObserver]: Analyzing ICFG memset3.c [2021-01-07 05:24:05,725 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:24:05,731 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-01-07 05:24:05,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-07 05:24:05,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:24:05,787 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:24:05,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:24:05,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:24:05,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:24:05,788 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:24:05,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:24:05,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:24:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-01-07 05:24:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-01-07 05:24:05,813 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:24:05,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-01-07 05:24:05,814 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-01-07 05:24:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:24:05,822 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2021-01-07 05:24:05,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:24:05,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9489928] [2021-01-07 05:24:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:24:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:24:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:24:06,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9489928] [2021-01-07 05:24:06,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:24:06,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:24:06,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455751771] [2021-01-07 05:24:06,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:24:06,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:24:06,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:24:06,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:24:06,091 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2021-01-07 05:24:06,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:24:06,129 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-01-07 05:24:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:24:06,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-01-07 05:24:06,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:24:06,145 INFO L225 Difference]: With dead ends: 11 [2021-01-07 05:24:06,145 INFO L226 Difference]: Without dead ends: 9 [2021-01-07 05:24:06,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:24:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-01-07 05:24:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-01-07 05:24:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-01-07 05:24:06,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-01-07 05:24:06,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2021-01-07 05:24:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:24:06,221 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-01-07 05:24:06,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:24:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-01-07 05:24:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:24:06,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:24:06,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:24:06,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:24:06,226 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-01-07 05:24:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:24:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2021-01-07 05:24:06,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:24:06,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039519613] [2021-01-07 05:24:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:24:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:24:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:24:06,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039519613] [2021-01-07 05:24:06,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:24:06,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:24:06,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066365521] [2021-01-07 05:24:06,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:24:06,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:24:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:24:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:24:06,344 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2021-01-07 05:24:06,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:24:06,364 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-01-07 05:24:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:24:06,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:24:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:24:06,366 INFO L225 Difference]: With dead ends: 8 [2021-01-07 05:24:06,366 INFO L226 Difference]: Without dead ends: 8 [2021-01-07 05:24:06,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:24:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-01-07 05:24:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-01-07 05:24:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-01-07 05:24:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-01-07 05:24:06,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-01-07 05:24:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:24:06,370 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-01-07 05:24:06,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:24:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-01-07 05:24:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:24:06,371 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:24:06,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:24:06,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:24:06,371 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-01-07 05:24:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:24:06,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1803953449, now seen corresponding path program 1 times [2021-01-07 05:24:06,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:24:06,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17872042] [2021-01-07 05:24:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:24:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:24:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:24:06,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17872042] [2021-01-07 05:24:06,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:24:06,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:24:06,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011750102] [2021-01-07 05:24:06,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:24:06,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:24:06,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:24:06,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:24:06,425 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2021-01-07 05:24:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:24:06,450 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-01-07 05:24:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:24:06,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:24:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:24:06,452 INFO L225 Difference]: With dead ends: 9 [2021-01-07 05:24:06,452 INFO L226 Difference]: Without dead ends: 9 [2021-01-07 05:24:06,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:24:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-01-07 05:24:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-01-07 05:24:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-01-07 05:24:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-01-07 05:24:06,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-01-07 05:24:06,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:24:06,456 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-01-07 05:24:06,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:24:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-01-07 05:24:06,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:24:06,457 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:24:06,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:24:06,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:24:06,458 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-01-07 05:24:06,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:24:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash 87920521, now seen corresponding path program 1 times [2021-01-07 05:24:06,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:24:06,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470679181] [2021-01-07 05:24:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:24:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:24:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:24:06,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470679181] [2021-01-07 05:24:06,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038696736] [2021-01-07 05:24:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:24:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:24:06,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 05:24:06,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:24:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:24:06,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:24:06,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-01-07 05:24:06,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519660634] [2021-01-07 05:24:06,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:24:06,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:24:06,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:24:06,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:24:06,679 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2021-01-07 05:24:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:24:06,699 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-01-07 05:24:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:24:06,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2021-01-07 05:24:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:24:06,700 INFO L225 Difference]: With dead ends: 10 [2021-01-07 05:24:06,701 INFO L226 Difference]: Without dead ends: 10 [2021-01-07 05:24:06,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:24:06,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-07 05:24:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-01-07 05:24:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-01-07 05:24:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-01-07 05:24:06,704 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-01-07 05:24:06,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:24:06,705 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-01-07 05:24:06,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:24:06,705 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-01-07 05:24:06,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:24:06,706 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:24:06,706 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:24:06,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:24:06,922 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-01-07 05:24:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:24:06,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1569492695, now seen corresponding path program 2 times [2021-01-07 05:24:06,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:24:06,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221885323] [2021-01-07 05:24:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:24:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:24:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:24:06,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221885323] [2021-01-07 05:24:06,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539448240] [2021-01-07 05:24:06,992 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:24:07,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:24:07,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:24:07,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:24:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:24:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:24:07,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:24:07,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-01-07 05:24:07,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028550372] [2021-01-07 05:24:07,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:24:07,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:24:07,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:24:07,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:24:07,111 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2021-01-07 05:24:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:24:07,134 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-01-07 05:24:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:24:07,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:24:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:24:07,136 INFO L225 Difference]: With dead ends: 9 [2021-01-07 05:24:07,136 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:24:07,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:24:07,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:24:07,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:24:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:24:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:24:07,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-01-07 05:24:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:24:07,139 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:24:07,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:24:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:24:07,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:24:07,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:24:07,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:24:07 BoogieIcfgContainer [2021-01-07 05:24:07,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:24:07,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:24:07,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:24:07,363 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:24:07,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:24:05" (3/4) ... [2021-01-07 05:24:07,368 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:24:07,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-01-07 05:24:07,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-01-07 05:24:07,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-07 05:24:07,422 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-memsafety/memset3.c-witness.graphml [2021-01-07 05:24:07,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:24:07,425 INFO L168 Benchmark]: Toolchain (without parser) took 2547.18 ms. Allocated memory is still 159.4 MB. Free memory was 134.1 MB in the beginning and 76.1 MB in the end (delta: 58.0 MB). Peak memory consumption was 58.9 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:07,426 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 159.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:24:07,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.32 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 125.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:07,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.72 ms. Allocated memory is still 159.4 MB. Free memory was 125.0 MB in the beginning and 123.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:07,428 INFO L168 Benchmark]: Boogie Preprocessor took 24.89 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.8 MB in the end (delta: 952.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:07,429 INFO L168 Benchmark]: RCFGBuilder took 451.03 ms. Allocated memory is still 159.4 MB. Free memory was 122.8 MB in the beginning and 112.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:07,430 INFO L168 Benchmark]: TraceAbstraction took 1654.55 ms. Allocated memory is still 159.4 MB. Free memory was 111.7 MB in the beginning and 78.2 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.7 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:07,431 INFO L168 Benchmark]: Witness Printer took 60.47 ms. Allocated memory is still 159.4 MB. Free memory was 78.2 MB in the beginning and 76.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:24:07,435 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 159.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 304.32 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 125.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.72 ms. Allocated memory is still 159.4 MB. Free memory was 125.0 MB in the beginning and 123.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.89 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.8 MB in the end (delta: 952.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 451.03 ms. Allocated memory is still 159.4 MB. Free memory was 122.8 MB in the beginning and 112.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1654.55 ms. Allocated memory is still 159.4 MB. Free memory was 111.7 MB in the beginning and 78.2 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.7 MB. Max. memory is 8.0 GB. * Witness Printer took 60.47 ms. Allocated memory is still 159.4 MB. Free memory was 78.2 MB in the beginning and 76.1 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 20 SDslu, 21 SDs, 0 SdLazy, 40 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 41 ConstructedInterpolants, 1 QuantifiedInterpolants, 1433 SizeOfPredicates, 4 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/8 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...