./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f2a8d3919c0496882213752e07135061fdbafdf6 ..................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:17:58,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:17:58,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:17:58,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:17:58,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:17:58,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:17:58,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:17:58,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:17:58,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:17:58,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:17:58,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:17:58,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:17:58,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:17:58,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:17:58,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:17:58,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:17:58,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:17:58,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:17:58,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:17:58,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:17:58,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:17:58,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:17:58,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:17:58,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:17:58,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:17:58,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:17:58,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:17:58,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:17:58,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:17:58,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:17:58,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:17:58,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:17:58,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:17:58,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:17:58,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:17:58,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:17:58,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:17:58,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:17:58,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:17:58,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:17:58,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:17:58,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-10-20 06:17:58,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:17:58,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:17:58,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:17:58,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:17:58,200 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:17:58,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:17:58,201 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:17:58,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:17:58,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:17:58,201 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:17:58,203 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:17:58,203 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:17:58,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:17:58,204 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:17:58,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:17:58,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:17:58,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:17:58,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:17:58,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:17:58,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:17:58,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:17:58,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:17:58,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:17:58,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:17:58,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:17:58,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2a8d3919c0496882213752e07135061fdbafdf6 [2020-10-20 06:17:58,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:17:58,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:17:58,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:17:58,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:17:58,469 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:17:58,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-10-20 06:17:58,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7878c0d1/8f6811e0de574637af1b82015d9ab36e/FLAGbb11035d6 [2020-10-20 06:17:59,001 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:17:59,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-10-20 06:17:59,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7878c0d1/8f6811e0de574637af1b82015d9ab36e/FLAGbb11035d6 [2020-10-20 06:17:59,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7878c0d1/8f6811e0de574637af1b82015d9ab36e [2020-10-20 06:17:59,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:17:59,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:17:59,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:59,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:17:59,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:17:59,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:59" (1/1) ... [2020-10-20 06:17:59,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15437088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59, skipping insertion in model container [2020-10-20 06:17:59,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:59" (1/1) ... [2020-10-20 06:17:59,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:17:59,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:17:59,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:59,687 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:17:59,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:59,716 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:17:59,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59 WrapperNode [2020-10-20 06:17:59,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:59,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:17:59,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:17:59,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:17:59,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59" (1/1) ... [2020-10-20 06:17:59,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59" (1/1) ... [2020-10-20 06:17:59,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59" (1/1) ... [2020-10-20 06:17:59,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59" (1/1) ... [2020-10-20 06:17:59,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59" (1/1) ... [2020-10-20 06:17:59,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59" (1/1) ... [2020-10-20 06:17:59,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59" (1/1) ... [2020-10-20 06:17:59,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:17:59,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:17:59,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:17:59,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:17:59,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:17:59,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:17:59,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:17:59,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:17:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:17:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:17:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:17:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:17:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:17:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:17:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:17:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:18:00,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:18:00,056 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-20 06:18:00,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:00 BoogieIcfgContainer [2020-10-20 06:18:00,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:18:00,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:18:00,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:18:00,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:18:00,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:17:59" (1/3) ... [2020-10-20 06:18:00,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcc31d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:18:00, skipping insertion in model container [2020-10-20 06:18:00,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:59" (2/3) ... [2020-10-20 06:18:00,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcc31d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:18:00, skipping insertion in model container [2020-10-20 06:18:00,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:00" (3/3) ... [2020-10-20 06:18:00,069 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-1.c [2020-10-20 06:18:00,085 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:18:00,095 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-20 06:18:00,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-20 06:18:00,138 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:18:00,138 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:18:00,138 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:18:00,139 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:18:00,139 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:18:00,139 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:18:00,139 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:18:00,140 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:18:00,161 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 06:18:00,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:18:00,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:00,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:00,183 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:00,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:00,190 INFO L82 PathProgramCache]: Analyzing trace with hash -522028180, now seen corresponding path program 1 times [2020-10-20 06:18:00,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:00,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034849601] [2020-10-20 06:18:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:00,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:00,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034849601] [2020-10-20 06:18:00,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:00,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:00,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307820585] [2020-10-20 06:18:00,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:00,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:00,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:00,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:00,479 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-20 06:18:00,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:00,599 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-20 06:18:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:00,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:18:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:00,616 INFO L225 Difference]: With dead ends: 28 [2020-10-20 06:18:00,617 INFO L226 Difference]: Without dead ends: 25 [2020-10-20 06:18:00,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:00,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-20 06:18:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-20 06:18:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 06:18:00,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-20 06:18:00,677 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 7 [2020-10-20 06:18:00,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:00,678 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-20 06:18:00,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:00,678 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-20 06:18:00,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:18:00,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:00,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:00,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:18:00,681 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:00,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:00,682 INFO L82 PathProgramCache]: Analyzing trace with hash -522028179, now seen corresponding path program 1 times [2020-10-20 06:18:00,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:00,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464461093] [2020-10-20 06:18:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:00,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:00,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464461093] [2020-10-20 06:18:00,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:00,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:00,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902310951] [2020-10-20 06:18:00,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:00,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:00,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:00,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:00,753 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2020-10-20 06:18:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:00,819 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-20 06:18:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:00,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:18:00,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:00,821 INFO L225 Difference]: With dead ends: 20 [2020-10-20 06:18:00,821 INFO L226 Difference]: Without dead ends: 20 [2020-10-20 06:18:00,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:00,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-20 06:18:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-20 06:18:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 06:18:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-20 06:18:00,826 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2020-10-20 06:18:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:00,826 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-20 06:18:00,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-20 06:18:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:18:00,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:00,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:00,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:18:00,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash -141661244, now seen corresponding path program 1 times [2020-10-20 06:18:00,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:00,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941481225] [2020-10-20 06:18:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:00,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941481225] [2020-10-20 06:18:00,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:00,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:00,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278697668] [2020-10-20 06:18:00,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:00,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:00,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:00,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:00,891 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-10-20 06:18:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:00,928 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-20 06:18:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:00,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 06:18:00,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:00,930 INFO L225 Difference]: With dead ends: 19 [2020-10-20 06:18:00,930 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 06:18:00,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 06:18:00,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-20 06:18:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:18:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-20 06:18:00,935 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-10-20 06:18:00,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:00,936 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-20 06:18:00,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-20 06:18:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:18:00,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:00,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:00,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:18:00,938 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:00,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1302500167, now seen corresponding path program 1 times [2020-10-20 06:18:00,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:00,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251280618] [2020-10-20 06:18:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:01,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:01,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251280618] [2020-10-20 06:18:01,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:01,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:01,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093358758] [2020-10-20 06:18:01,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:18:01,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:01,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:18:01,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:18:01,034 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-10-20 06:18:01,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:01,074 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-20 06:18:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:18:01,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 06:18:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:01,076 INFO L225 Difference]: With dead ends: 18 [2020-10-20 06:18:01,076 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:18:01,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:18:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:18:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:18:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:18:01,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-20 06:18:01,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:01,078 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:18:01,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:18:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:18:01,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:18:01,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:18:01,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:18:01 BoogieIcfgContainer [2020-10-20 06:18:01,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:18:01,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:18:01,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:18:01,087 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:18:01,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:00" (3/4) ... [2020-10-20 06:18:01,092 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:18:01,100 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:18:01,101 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:18:01,106 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 06:18:01,107 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 06:18:01,107 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:18:01,107 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:18:01,155 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:18:01,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:18:01,158 INFO L168 Benchmark]: Toolchain (without parser) took 1804.65 ms. Allocated memory was 33.6 MB in the beginning and 45.1 MB in the end (delta: 11.5 MB). Free memory was 10.3 MB in the beginning and 18.1 MB in the end (delta: -7.7 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:01,159 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 33.0 MB. Free memory was 17.6 MB in the beginning and 17.6 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:18:01,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.06 ms. Allocated memory was 33.6 MB in the beginning and 41.9 MB in the end (delta: 8.4 MB). Free memory was 9.5 MB in the beginning and 25.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 6.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:01,161 INFO L168 Benchmark]: Boogie Preprocessor took 32.28 ms. Allocated memory is still 41.9 MB. Free memory was 25.1 MB in the beginning and 23.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:01,161 INFO L168 Benchmark]: RCFGBuilder took 309.01 ms. Allocated memory is still 41.9 MB. Free memory was 23.3 MB in the beginning and 19.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:01,162 INFO L168 Benchmark]: TraceAbstraction took 1025.66 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 18.6 MB in the beginning and 21.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 310.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:18:01,163 INFO L168 Benchmark]: Witness Printer took 69.41 ms. Allocated memory is still 45.1 MB. Free memory was 21.4 MB in the beginning and 18.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:01,166 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 33.0 MB. Free memory was 17.6 MB in the beginning and 17.6 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 358.06 ms. Allocated memory was 33.6 MB in the beginning and 41.9 MB in the end (delta: 8.4 MB). Free memory was 9.5 MB in the beginning and 25.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 6.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.28 ms. Allocated memory is still 41.9 MB. Free memory was 25.1 MB in the beginning and 23.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 309.01 ms. Allocated memory is still 41.9 MB. Free memory was 23.3 MB in the beginning and 19.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1025.66 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 18.6 MB in the beginning and 21.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 310.4 kB. Max. memory is 14.3 GB. * Witness Printer took 69.41 ms. Allocated memory is still 45.1 MB. Free memory was 21.4 MB in the beginning and 18.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 30 SDs, 0 SdLazy, 109 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...