./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 0.1.25-906a4fb [2020-10-19 18:25:08,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:25:08,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:25:08,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:25:08,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:25:08,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:25:08,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:25:08,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:25:08,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:25:08,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:25:08,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:25:08,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:25:08,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:25:08,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:25:08,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:25:08,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:25:08,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:25:08,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:25:08,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:25:08,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:25:08,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:25:08,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:25:08,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:25:08,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:25:08,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:25:08,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:25:08,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:25:08,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:25:08,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:25:08,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:25:08,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:25:08,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:25:08,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:25:08,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:25:08,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:25:08,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:25:08,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:25:08,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:25:08,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:25:08,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:25:08,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:25:08,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-10-19 18:25:08,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:25:08,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:25:08,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:25:08,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:25:08,867 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:25:08,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:25:08,868 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:25:08,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:25:08,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:25:08,869 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:25:08,870 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:25:08,870 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:25:08,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:25:08,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:25:08,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:25:08,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:25:08,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:25:08,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:25:08,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:25:08,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:25:08,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:25:08,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:25:08,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:25:08,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:25:08,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:25:08,875 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 [2020-10-19 18:25:09,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:25:09,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:25:09,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:25:09,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:25:09,232 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:25:09,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-10-19 18:25:09,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baa4c47d7/16714bf831e64c01abf0714f15a78b0b/FLAGa34775976 [2020-10-19 18:25:09,709 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:25:09,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-10-19 18:25:09,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baa4c47d7/16714bf831e64c01abf0714f15a78b0b/FLAGa34775976 [2020-10-19 18:25:10,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baa4c47d7/16714bf831e64c01abf0714f15a78b0b [2020-10-19 18:25:10,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:25:10,135 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:25:10,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:25:10,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:25:10,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:25:10,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:25:10" (1/1) ... [2020-10-19 18:25:10,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b456b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10, skipping insertion in model container [2020-10-19 18:25:10,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:25:10" (1/1) ... [2020-10-19 18:25:10,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:25:10,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:25:10,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:25:10,420 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:25:10,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:25:10,456 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:25:10,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10 WrapperNode [2020-10-19 18:25:10,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:25:10,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:25:10,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:25:10,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:25:10,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10" (1/1) ... [2020-10-19 18:25:10,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10" (1/1) ... [2020-10-19 18:25:10,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10" (1/1) ... [2020-10-19 18:25:10,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10" (1/1) ... [2020-10-19 18:25:10,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10" (1/1) ... [2020-10-19 18:25:10,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10" (1/1) ... [2020-10-19 18:25:10,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10" (1/1) ... [2020-10-19 18:25:10,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:25:10,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:25:10,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:25:10,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:25:10,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10" (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 [2020-10-19 18:25:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:25:10,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:25:10,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:25:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:25:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:25:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:25:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:25:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:25:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:25:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:25:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:25:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:25:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:25:10,932 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:25:10,933 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 18:25:10,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:25:10 BoogieIcfgContainer [2020-10-19 18:25:10,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:25:10,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:25:10,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:25:10,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:25:10,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:25:10" (1/3) ... [2020-10-19 18:25:10,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629b1610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:25:10, skipping insertion in model container [2020-10-19 18:25:10,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:10" (2/3) ... [2020-10-19 18:25:10,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629b1610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:25:10, skipping insertion in model container [2020-10-19 18:25:10,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:25:10" (3/3) ... [2020-10-19 18:25:10,944 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-1.c [2020-10-19 18:25:10,958 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:25:10,966 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-19 18:25:10,981 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-19 18:25:11,002 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:25:11,002 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:25:11,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:25:11,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:25:11,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:25:11,003 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:25:11,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:25:11,003 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:25:11,019 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-19 18:25:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:25:11,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:11,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:11,028 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]=== [2020-10-19 18:25:11,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:11,034 INFO L82 PathProgramCache]: Analyzing trace with hash -522028180, now seen corresponding path program 1 times [2020-10-19 18:25:11,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:11,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592933596] [2020-10-19 18:25:11,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:11,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592933596] [2020-10-19 18:25:11,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:11,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:11,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026893572] [2020-10-19 18:25:11,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:11,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:11,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:11,280 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-19 18:25:11,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:11,449 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-19 18:25:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:25:11,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:25:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:11,461 INFO L225 Difference]: With dead ends: 28 [2020-10-19 18:25:11,461 INFO L226 Difference]: Without dead ends: 25 [2020-10-19 18:25:11,463 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 [2020-10-19 18:25:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-19 18:25:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-19 18:25:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 18:25:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-19 18:25:11,502 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 7 [2020-10-19 18:25:11,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:11,502 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-19 18:25:11,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:11,503 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-19 18:25:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:25:11,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:11,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:11,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:25:11,504 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]=== [2020-10-19 18:25:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:11,505 INFO L82 PathProgramCache]: Analyzing trace with hash -522028179, now seen corresponding path program 1 times [2020-10-19 18:25:11,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:11,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542301852] [2020-10-19 18:25:11,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:11,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542301852] [2020-10-19 18:25:11,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:11,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:11,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940261090] [2020-10-19 18:25:11,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:11,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:11,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:11,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:11,592 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2020-10-19 18:25:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:11,648 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-19 18:25:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:25:11,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:25:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:11,649 INFO L225 Difference]: With dead ends: 20 [2020-10-19 18:25:11,649 INFO L226 Difference]: Without dead ends: 20 [2020-10-19 18:25:11,651 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 [2020-10-19 18:25:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-19 18:25:11,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-19 18:25:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 18:25:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-19 18:25:11,656 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2020-10-19 18:25:11,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:11,656 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-19 18:25:11,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-19 18:25:11,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:25:11,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:11,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:11,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:25:11,659 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]=== [2020-10-19 18:25:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:11,659 INFO L82 PathProgramCache]: Analyzing trace with hash -141661244, now seen corresponding path program 1 times [2020-10-19 18:25:11,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:11,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135601400] [2020-10-19 18:25:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:11,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:11,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135601400] [2020-10-19 18:25:11,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:11,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:11,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773162925] [2020-10-19 18:25:11,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:11,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:11,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:11,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:11,770 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-10-19 18:25:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:11,836 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-19 18:25:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:25:11,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-19 18:25:11,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:11,839 INFO L225 Difference]: With dead ends: 19 [2020-10-19 18:25:11,839 INFO L226 Difference]: Without dead ends: 19 [2020-10-19 18:25:11,840 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 [2020-10-19 18:25:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-19 18:25:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-19 18:25:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 18:25:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-19 18:25:11,848 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-10-19 18:25:11,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:11,849 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-19 18:25:11,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-19 18:25:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:25:11,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:11,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:11,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:25:11,852 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]=== [2020-10-19 18:25:11,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:11,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1302500167, now seen corresponding path program 1 times [2020-10-19 18:25:11,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:11,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529258325] [2020-10-19 18:25:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:11,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529258325] [2020-10-19 18:25:11,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:11,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:25:11,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224475208] [2020-10-19 18:25:11,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:25:11,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:11,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:25:11,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:25:11,958 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-10-19 18:25:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:12,004 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-19 18:25:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:25:12,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-19 18:25:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:12,006 INFO L225 Difference]: With dead ends: 18 [2020-10-19 18:25:12,006 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:25:12,006 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 [2020-10-19 18:25:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:25:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:25:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:25:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:25:12,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-19 18:25:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:12,008 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:25:12,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:25:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:25:12,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:25:12,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:25:12,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:25:12 BoogieIcfgContainer [2020-10-19 18:25:12,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:25:12,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:25:12,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:25:12,015 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:25:12,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:25:10" (3/4) ... [2020-10-19 18:25:12,020 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:25:12,027 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:25:12,028 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:25:12,034 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-19 18:25:12,034 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 18:25:12,034 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:25:12,035 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:25:12,083 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:25:12,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:25:12,086 INFO L168 Benchmark]: Toolchain (without parser) took 1954.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -102.5 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:25:12,086 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:25:12,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.13 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:25:12,088 INFO L168 Benchmark]: Boogie Preprocessor took 147.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:25:12,088 INFO L168 Benchmark]: RCFGBuilder took 328.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:25:12,089 INFO L168 Benchmark]: TraceAbstraction took 1078.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:25:12,089 INFO L168 Benchmark]: Witness Printer took 68.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:25:12,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 321.13 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 147.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 328.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1078.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. * Witness Printer took 68.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 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: 1.0s, 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, 0.2s 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, 0.1s 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...