/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-ext-properties/list-ext_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:15:00,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:15:00,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:15:00,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:15:00,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:15:00,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:15:00,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:15:00,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:15:00,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:15:00,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:15:00,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:15:00,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:15:00,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:15:00,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:15:00,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:15:00,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:15:00,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:15:00,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:15:00,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:15:00,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:15:00,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:15:00,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:15:00,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:15:00,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:15:00,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:15:00,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:15:00,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:15:00,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:15:00,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:15:00,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:15:00,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:15:00,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:15:00,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:15:00,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:15:00,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:15:00,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:15:00,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:15:00,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:15:00,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:15:00,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:15:00,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:15:00,516 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:15:00,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:15:00,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:15:00,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:15:00,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:15:00,517 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:15:00,518 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:15:00,518 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:15:00,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:15:00,518 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:15:00,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:15:00,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:15:00,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:15:00,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:15:00,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:15:00,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:15:00,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:15:00,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:15:00,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:15:00,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:15:00,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:15:00,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:15:00,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:15:00,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:15:00,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:15:00,995 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:15:00,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-12-22 19:15:01,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4090ee7/d791422da31d47b9a1269d8572be1087/FLAGf4d100c32 [2020-12-22 19:15:01,866 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:15:01,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-12-22 19:15:01,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4090ee7/d791422da31d47b9a1269d8572be1087/FLAGf4d100c32 [2020-12-22 19:15:02,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4090ee7/d791422da31d47b9a1269d8572be1087 [2020-12-22 19:15:02,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:15:02,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:15:02,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:15:02,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:15:02,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:15:02,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35aa0648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02, skipping insertion in model container [2020-12-22 19:15:02,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:15:02,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:15:02,528 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2020-12-22 19:15:02,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:15:02,546 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:15:02,611 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2020-12-22 19:15:02,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:15:02,675 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:15:02,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02 WrapperNode [2020-12-22 19:15:02,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:15:02,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:15:02,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:15:02,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:15:02,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:15:02,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:15:02,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:15:02,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:15:02,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (1/1) ... [2020-12-22 19:15:02,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:15:02,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:15:02,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:15:02,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:15:02,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (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 [2020-12-22 19:15:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:15:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:15:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:15:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:15:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:15:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:15:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 19:15:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:15:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:15:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:15:03,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:15:03,651 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-22 19:15:03,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:15:03 BoogieIcfgContainer [2020-12-22 19:15:03,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:15:03,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:15:03,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:15:03,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:15:03,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:15:02" (1/3) ... [2020-12-22 19:15:03,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3143170b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:15:03, skipping insertion in model container [2020-12-22 19:15:03,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:15:02" (2/3) ... [2020-12-22 19:15:03,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3143170b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:15:03, skipping insertion in model container [2020-12-22 19:15:03,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:15:03" (3/3) ... [2020-12-22 19:15:03,665 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2020-12-22 19:15:03,673 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:15:03,679 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-12-22 19:15:03,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-12-22 19:15:03,729 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:15:03,730 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:15:03,730 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:15:03,730 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:15:03,730 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:15:03,730 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:15:03,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:15:03,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:15:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2020-12-22 19:15:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:15:03,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:15:03,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:15:03,763 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:15:03,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:15:03,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1807801548, now seen corresponding path program 1 times [2020-12-22 19:15:03,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:15:03,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172794091] [2020-12-22 19:15:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:15:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:15:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:15:03,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172794091] [2020-12-22 19:15:03,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:15:03,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:15:03,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559875194] [2020-12-22 19:15:03,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:15:03,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:15:03,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:15:03,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:15:03,992 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 2 states. [2020-12-22 19:15:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:15:04,019 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-12-22 19:15:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:15:04,021 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 19:15:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:15:04,034 INFO L225 Difference]: With dead ends: 91 [2020-12-22 19:15:04,034 INFO L226 Difference]: Without dead ends: 86 [2020-12-22 19:15:04,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:15:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-22 19:15:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-12-22 19:15:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 19:15:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2020-12-22 19:15:04,083 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2020-12-22 19:15:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:15:04,084 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2020-12-22 19:15:04,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:15:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2020-12-22 19:15:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:15:04,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:15:04,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:15:04,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:15:04,086 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:15:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:15:04,087 INFO L82 PathProgramCache]: Analyzing trace with hash 206286314, now seen corresponding path program 1 times [2020-12-22 19:15:04,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:15:04,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540237793] [2020-12-22 19:15:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:15:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:15:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:15:04,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540237793] [2020-12-22 19:15:04,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:15:04,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:15:04,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847444275] [2020-12-22 19:15:04,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:15:04,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:15:04,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:15:04,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:15:04,248 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 4 states. [2020-12-22 19:15:04,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:15:04,519 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2020-12-22 19:15:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:15:04,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 19:15:04,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:15:04,522 INFO L225 Difference]: With dead ends: 107 [2020-12-22 19:15:04,522 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 19:15:04,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:15:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 19:15:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2020-12-22 19:15:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-22 19:15:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2020-12-22 19:15:04,536 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 8 [2020-12-22 19:15:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:15:04,536 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2020-12-22 19:15:04,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:15:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2020-12-22 19:15:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 19:15:04,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:15:04,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:15:04,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:15:04,538 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:15:04,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:15:04,539 INFO L82 PathProgramCache]: Analyzing trace with hash 206286315, now seen corresponding path program 1 times [2020-12-22 19:15:04,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:15:04,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645061633] [2020-12-22 19:15:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:15:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:15:04,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:15:04,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645061633] [2020-12-22 19:15:04,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:15:04,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:15:04,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232926090] [2020-12-22 19:15:04,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:15:04,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:15:04,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:15:04,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:15:04,656 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand 4 states. [2020-12-22 19:15:04,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:15:04,889 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2020-12-22 19:15:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:15:04,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 19:15:04,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:15:04,891 INFO L225 Difference]: With dead ends: 124 [2020-12-22 19:15:04,891 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 19:15:04,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:15:04,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 19:15:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2020-12-22 19:15:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 19:15:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-12-22 19:15:04,903 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 8 [2020-12-22 19:15:04,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:15:04,903 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-12-22 19:15:04,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:15:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-12-22 19:15:04,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:15:04,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:15:04,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:15:04,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:15:04,905 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:15:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:15:04,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1364928161, now seen corresponding path program 1 times [2020-12-22 19:15:04,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:15:04,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545666610] [2020-12-22 19:15:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:15:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:15:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:15:05,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545666610] [2020-12-22 19:15:05,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:15:05,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:15:05,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773091662] [2020-12-22 19:15:05,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:15:05,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:15:05,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:15:05,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:15:05,061 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 6 states. [2020-12-22 19:15:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:15:05,379 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2020-12-22 19:15:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:15:05,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 19:15:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:15:05,389 INFO L225 Difference]: With dead ends: 152 [2020-12-22 19:15:05,389 INFO L226 Difference]: Without dead ends: 152 [2020-12-22 19:15:05,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 19:15:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-22 19:15:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 111. [2020-12-22 19:15:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-22 19:15:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2020-12-22 19:15:05,422 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 17 [2020-12-22 19:15:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:15:05,423 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2020-12-22 19:15:05,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:15:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2020-12-22 19:15:05,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:15:05,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:15:05,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:15:05,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:15:05,427 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:15:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:15:05,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1364928160, now seen corresponding path program 1 times [2020-12-22 19:15:05,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:15:05,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64287309] [2020-12-22 19:15:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:15:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:15:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:15:05,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64287309] [2020-12-22 19:15:05,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:15:05,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:15:05,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438768941] [2020-12-22 19:15:05,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:15:05,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:15:05,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:15:05,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:15:05,624 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand 6 states. [2020-12-22 19:15:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:15:06,048 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2020-12-22 19:15:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:15:06,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 19:15:06,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:15:06,050 INFO L225 Difference]: With dead ends: 155 [2020-12-22 19:15:06,050 INFO L226 Difference]: Without dead ends: 155 [2020-12-22 19:15:06,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 19:15:06,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-22 19:15:06,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 95. [2020-12-22 19:15:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:15:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-12-22 19:15:06,060 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 17 [2020-12-22 19:15:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:15:06,060 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-12-22 19:15:06,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:15:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-12-22 19:15:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:15:06,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:15:06,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:15:06,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:15:06,062 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:15:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:15:06,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1479745928, now seen corresponding path program 1 times [2020-12-22 19:15:06,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:15:06,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372471134] [2020-12-22 19:15:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:15:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:15:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:15:06,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372471134] [2020-12-22 19:15:06,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:15:06,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 19:15:06,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912916818] [2020-12-22 19:15:06,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 19:15:06,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:15:06,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 19:15:06,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 19:15:06,187 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 7 states. [2020-12-22 19:15:06,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:15:06,513 INFO L93 Difference]: Finished difference Result 187 states and 204 transitions. [2020-12-22 19:15:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:15:06,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 19:15:06,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:15:06,516 INFO L225 Difference]: With dead ends: 187 [2020-12-22 19:15:06,516 INFO L226 Difference]: Without dead ends: 187 [2020-12-22 19:15:06,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:15:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-22 19:15:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2020-12-22 19:15:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-22 19:15:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2020-12-22 19:15:06,525 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 18 [2020-12-22 19:15:06,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:15:06,525 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2020-12-22 19:15:06,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 19:15:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2020-12-22 19:15:06,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:15:06,527 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:15:06,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:15:06,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:15:06,527 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-22 19:15:06,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:15:06,528 INFO L82 PathProgramCache]: Analyzing trace with hash 354031242, now seen corresponding path program 1 times [2020-12-22 19:15:06,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:15:06,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039758083] [2020-12-22 19:15:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:15:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:15:06,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:15:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:15:06,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:15:06,663 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:15:06,664 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:15:06,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:15:06,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:15:06 BoogieIcfgContainer [2020-12-22 19:15:06,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:15:06,727 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:15:06,727 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:15:06,728 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:15:06,728 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:15:03" (3/4) ... [2020-12-22 19:15:06,732 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 19:15:06,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:15:06,737 INFO L168 Benchmark]: Toolchain (without parser) took 4585.40 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 124.7 MB in the beginning and 149.1 MB in the end (delta: -24.4 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:15:06,738 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:15:06,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:15:06,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 139.73 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 132.3 MB in the end (delta: -30.2 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. [2020-12-22 19:15:06,747 INFO L168 Benchmark]: Boogie Preprocessor took 41.69 ms. Allocated memory is still 151.0 MB. Free memory was 132.3 MB in the beginning and 130.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:15:06,748 INFO L168 Benchmark]: RCFGBuilder took 792.70 ms. Allocated memory is still 151.0 MB. Free memory was 130.7 MB in the beginning and 98.2 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:15:06,749 INFO L168 Benchmark]: TraceAbstraction took 3070.97 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 97.7 MB in the beginning and 149.6 MB in the end (delta: -52.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:15:06,749 INFO L168 Benchmark]: Witness Printer took 5.20 ms. Allocated memory is still 181.4 MB. Free memory was 149.6 MB in the beginning and 149.1 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:15:06,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 526.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 139.73 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 132.3 MB in the end (delta: -30.2 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.69 ms. Allocated memory is still 151.0 MB. Free memory was 132.3 MB in the beginning and 130.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 792.70 ms. Allocated memory is still 151.0 MB. Free memory was 130.7 MB in the beginning and 98.2 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3070.97 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 97.7 MB in the beginning and 149.6 MB in the end (delta: -52.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.20 ms. Allocated memory is still 181.4 MB. Free memory was 149.6 MB in the beginning and 149.1 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) [L537] List t; [L538] List p = a; [L539] i < 10 && __VERIFIER_nondet_int() [L539] i < 10 && __VERIFIER_nondet_int() [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] y < 10 && __VERIFIER_nondet_int() [L547] y < 10 && __VERIFIER_nondet_int() [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 [L556] p->n = (void*)__VERIFIER_nondet_ulong() [L557] i = 0 [L558] y = 0 [L559] p = a [L560] EXPR p->h [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 91 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 403 SDtfs, 639 SDslu, 587 SDs, 0 SdLazy, 972 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 219 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 4436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 9/9 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...