/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-properties/list-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:26:02,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:26:02,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:26:02,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:26:02,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:26:02,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:26:02,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:26:02,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:26:02,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:26:02,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:26:02,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:26:02,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:26:02,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:26:02,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:26:02,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:26:02,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:26:02,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:26:02,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:26:02,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:26:02,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:26:02,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:26:02,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:26:02,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:26:02,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:26:02,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 19:26:02,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:26:02,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:26:02,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:26:02,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:26:02,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:26:02,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:26:02,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:26:02,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:26:02,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:26:02,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:26:02,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:26:02,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:26:02,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:26:02,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:26:02,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:26:02,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:26:02,366 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:26:02,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:26:02,366 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:26:02,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:26:02,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:26:02,367 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:26:02,367 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:26:02,367 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:26:02,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:26:02,367 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:26:02,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:26:02,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:26:02,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:26:02,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:26:02,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:26:02,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:26:02,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:26:02,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:26:02,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:26:02,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:26:02,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:26:02,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:26:02,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:26:02,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:26:02,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:26:02,842 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:26:02,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2020-12-22 19:26:02,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d812b52f8/d07fc43357324a1a940d6c7d70311f83/FLAG70ddcd1db [2020-12-22 19:26:03,672 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:26:03,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2020-12-22 19:26:03,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d812b52f8/d07fc43357324a1a940d6c7d70311f83/FLAG70ddcd1db [2020-12-22 19:26:03,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d812b52f8/d07fc43357324a1a940d6c7d70311f83 [2020-12-22 19:26:03,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:26:03,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:26:03,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:26:03,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:26:03,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:26:03,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:26:03" (1/1) ... [2020-12-22 19:26:03,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559b967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:03, skipping insertion in model container [2020-12-22 19:26:03,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:26:03" (1/1) ... [2020-12-22 19:26:03,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:26:04,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:26:04,406 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-properties/list-1.i[23408,23421] [2020-12-22 19:26:04,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:26:04,427 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:26:04,505 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-properties/list-1.i[23408,23421] [2020-12-22 19:26:04,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:26:04,569 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:26:04,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04 WrapperNode [2020-12-22 19:26:04,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:26:04,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:26:04,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:26:04,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:26:04,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (1/1) ... [2020-12-22 19:26:04,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (1/1) ... [2020-12-22 19:26:04,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:26:04,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:26:04,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:26:04,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:26:04,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (1/1) ... [2020-12-22 19:26:04,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (1/1) ... [2020-12-22 19:26:04,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (1/1) ... [2020-12-22 19:26:04,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (1/1) ... [2020-12-22 19:26:04,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (1/1) ... [2020-12-22 19:26:04,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (1/1) ... [2020-12-22 19:26:04,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (1/1) ... [2020-12-22 19:26:04,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:26:04,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:26:04,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:26:04,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:26:04,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (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 19:26:04,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 19:26:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 19:26:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 19:26:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 19:26:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:26:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 19:26:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:26:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:26:04,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:26:05,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:26:05,484 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-22 19:26:05,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:26:05 BoogieIcfgContainer [2020-12-22 19:26:05,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:26:05,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:26:05,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:26:05,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:26:05,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:26:03" (1/3) ... [2020-12-22 19:26:05,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7637a3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:26:05, skipping insertion in model container [2020-12-22 19:26:05,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:04" (2/3) ... [2020-12-22 19:26:05,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7637a3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:26:05, skipping insertion in model container [2020-12-22 19:26:05,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:26:05" (3/3) ... [2020-12-22 19:26:05,496 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-12-22 19:26:05,504 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:26:05,510 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-12-22 19:26:05,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-12-22 19:26:05,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:26:05,563 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:26:05,563 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:26:05,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:26:05,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:26:05,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:26:05,564 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:26:05,564 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:26:05,584 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-12-22 19:26:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:26:05,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:05,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:05,595 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:05,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1807795398, now seen corresponding path program 1 times [2020-12-22 19:26:05,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:05,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847979315] [2020-12-22 19:26:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:05,791 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 19:26:05,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847979315] [2020-12-22 19:26:05,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:05,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:26:05,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991925433] [2020-12-22 19:26:05,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:26:05,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:05,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:26:05,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:26:05,817 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-12-22 19:26:05,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:05,835 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-12-22 19:26:05,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:26:05,837 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 19:26:05,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:05,847 INFO L225 Difference]: With dead ends: 66 [2020-12-22 19:26:05,848 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 19:26:05,850 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 19:26:05,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 19:26:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-22 19:26:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 19:26:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-12-22 19:26:05,892 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 7 [2020-12-22 19:26:05,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:05,892 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-12-22 19:26:05,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:26:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-12-22 19:26:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:26:05,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:05,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:05,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:26:05,894 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:05,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1807769772, now seen corresponding path program 1 times [2020-12-22 19:26:05,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:05,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237639185] [2020-12-22 19:26:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:05,969 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 19:26:05,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237639185] [2020-12-22 19:26:05,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:05,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:26:05,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729931926] [2020-12-22 19:26:05,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:26:05,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:05,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:26:05,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:26:05,974 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 4 states. [2020-12-22 19:26:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:06,127 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-12-22 19:26:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:26:06,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 19:26:06,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:06,129 INFO L225 Difference]: With dead ends: 68 [2020-12-22 19:26:06,129 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 19:26:06,130 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 19:26:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 19:26:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2020-12-22 19:26:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 19:26:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-22 19:26:06,140 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 7 [2020-12-22 19:26:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:06,140 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-22 19:26:06,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:26:06,140 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-22 19:26:06,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:26:06,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:06,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:06,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:26:06,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:06,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:06,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1807769773, now seen corresponding path program 1 times [2020-12-22 19:26:06,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:06,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666740467] [2020-12-22 19:26:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:06,212 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 19:26:06,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666740467] [2020-12-22 19:26:06,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:06,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:26:06,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092177688] [2020-12-22 19:26:06,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:26:06,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:06,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:26:06,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:26:06,215 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 4 states. [2020-12-22 19:26:06,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:06,434 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-22 19:26:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:26:06,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 19:26:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:06,436 INFO L225 Difference]: With dead ends: 88 [2020-12-22 19:26:06,437 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:26:06,437 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 19:26:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:26:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2020-12-22 19:26:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 19:26:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-12-22 19:26:06,458 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 7 [2020-12-22 19:26:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:06,458 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-12-22 19:26:06,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:26:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-12-22 19:26:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:26:06,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:06,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:06,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:26:06,462 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:06,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:06,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1014157433, now seen corresponding path program 1 times [2020-12-22 19:26:06,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:06,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797365214] [2020-12-22 19:26:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:06,548 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 19:26:06,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797365214] [2020-12-22 19:26:06,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:06,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:26:06,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623825046] [2020-12-22 19:26:06,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:26:06,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:06,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:26:06,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:26:06,552 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 6 states. [2020-12-22 19:26:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:06,735 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2020-12-22 19:26:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:26:06,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 19:26:06,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:06,737 INFO L225 Difference]: With dead ends: 116 [2020-12-22 19:26:06,737 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 19:26:06,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:26:06,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 19:26:06,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-12-22 19:26:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-22 19:26:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-12-22 19:26:06,747 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 15 [2020-12-22 19:26:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:06,748 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-12-22 19:26:06,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:26:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-12-22 19:26:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:26:06,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:06,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:06,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:26:06,750 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:06,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:06,751 INFO L82 PathProgramCache]: Analyzing trace with hash -2016970849, now seen corresponding path program 1 times [2020-12-22 19:26:06,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:06,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724726607] [2020-12-22 19:26:06,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:26:06,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724726607] [2020-12-22 19:26:06,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:06,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:26:06,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594057799] [2020-12-22 19:26:06,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:26:06,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:06,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:26:06,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:26:06,861 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 6 states. [2020-12-22 19:26:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:07,071 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-12-22 19:26:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:26:07,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 19:26:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:07,073 INFO L225 Difference]: With dead ends: 105 [2020-12-22 19:26:07,073 INFO L226 Difference]: Without dead ends: 105 [2020-12-22 19:26:07,074 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 19:26:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-22 19:26:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2020-12-22 19:26:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 19:26:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-12-22 19:26:07,081 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 15 [2020-12-22 19:26:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:07,082 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-12-22 19:26:07,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:26:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-12-22 19:26:07,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:26:07,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:07,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:07,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:26:07,083 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:07,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2016970848, now seen corresponding path program 1 times [2020-12-22 19:26:07,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:07,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79566713] [2020-12-22 19:26:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:26:07,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79566713] [2020-12-22 19:26:07,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:07,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:26:07,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301419512] [2020-12-22 19:26:07,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:26:07,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:07,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:26:07,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:26:07,198 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 6 states. [2020-12-22 19:26:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:07,545 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-12-22 19:26:07,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:26:07,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 19:26:07,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:07,547 INFO L225 Difference]: With dead ends: 106 [2020-12-22 19:26:07,547 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 19:26:07,548 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 19:26:07,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 19:26:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 74. [2020-12-22 19:26:07,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 19:26:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-12-22 19:26:07,554 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 15 [2020-12-22 19:26:07,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:07,555 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-12-22 19:26:07,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:26:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-12-22 19:26:07,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:26:07,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:07,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:07,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:26:07,557 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:07,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:07,558 INFO L82 PathProgramCache]: Analyzing trace with hash -399914149, now seen corresponding path program 1 times [2020-12-22 19:26:07,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:07,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381518580] [2020-12-22 19:26:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:07,620 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 19:26:07,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381518580] [2020-12-22 19:26:07,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:07,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:26:07,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510576715] [2020-12-22 19:26:07,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:26:07,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:07,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:26:07,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:26:07,623 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 6 states. [2020-12-22 19:26:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:07,819 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2020-12-22 19:26:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:26:07,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 19:26:07,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:07,821 INFO L225 Difference]: With dead ends: 118 [2020-12-22 19:26:07,822 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 19:26:07,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:26:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 19:26:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2020-12-22 19:26:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 19:26:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-12-22 19:26:07,846 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 17 [2020-12-22 19:26:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:07,846 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-12-22 19:26:07,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:26:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-12-22 19:26:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:26:07,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:07,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:07,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:26:07,850 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:07,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:07,851 INFO L82 PathProgramCache]: Analyzing trace with hash -399861594, now seen corresponding path program 1 times [2020-12-22 19:26:07,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:07,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647077536] [2020-12-22 19:26:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:07,952 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 19:26:07,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647077536] [2020-12-22 19:26:07,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:07,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 19:26:07,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743880004] [2020-12-22 19:26:07,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:26:07,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:07,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:26:07,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:26:07,955 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 6 states. [2020-12-22 19:26:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:08,122 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2020-12-22 19:26:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 19:26:08,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 19:26:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:08,124 INFO L225 Difference]: With dead ends: 101 [2020-12-22 19:26:08,124 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 19:26:08,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 19:26:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 19:26:08,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2020-12-22 19:26:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 19:26:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2020-12-22 19:26:08,129 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 17 [2020-12-22 19:26:08,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:08,129 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2020-12-22 19:26:08,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:26:08,129 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2020-12-22 19:26:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:26:08,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:08,131 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:08,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:26:08,131 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:08,132 INFO L82 PathProgramCache]: Analyzing trace with hash -695675823, now seen corresponding path program 1 times [2020-12-22 19:26:08,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:08,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689178075] [2020-12-22 19:26:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:26:08,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689178075] [2020-12-22 19:26:08,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:08,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:26:08,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530287747] [2020-12-22 19:26:08,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:26:08,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:08,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:26:08,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:26:08,222 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 6 states. [2020-12-22 19:26:08,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:08,466 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2020-12-22 19:26:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 19:26:08,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 19:26:08,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:08,468 INFO L225 Difference]: With dead ends: 84 [2020-12-22 19:26:08,468 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 19:26:08,469 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 19:26:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 19:26:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-12-22 19:26:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 19:26:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-12-22 19:26:08,483 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 17 [2020-12-22 19:26:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:08,483 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-12-22 19:26:08,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:26:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-12-22 19:26:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 19:26:08,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:08,485 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:26:08,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:26:08,486 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash -695675822, now seen corresponding path program 1 times [2020-12-22 19:26:08,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:08,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606936674] [2020-12-22 19:26:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:26:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:26:08,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606936674] [2020-12-22 19:26:08,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:26:08,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:26:08,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408720731] [2020-12-22 19:26:08,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 19:26:08,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:26:08,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 19:26:08,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 19:26:08,666 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 6 states. [2020-12-22 19:26:08,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:26:08,925 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2020-12-22 19:26:08,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 19:26:08,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 19:26:08,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:26:08,927 INFO L225 Difference]: With dead ends: 81 [2020-12-22 19:26:08,927 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 19:26:08,928 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 19:26:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 19:26:08,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2020-12-22 19:26:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 19:26:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-12-22 19:26:08,931 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 17 [2020-12-22 19:26:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:26:08,931 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-12-22 19:26:08,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 19:26:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-12-22 19:26:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 19:26:08,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:26:08,932 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 19:26:08,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:26:08,933 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_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.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 19:26:08,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:26:08,933 INFO L82 PathProgramCache]: Analyzing trace with hash 487568356, now seen corresponding path program 1 times [2020-12-22 19:26:08,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:26:08,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838817252] [2020-12-22 19:26:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:26:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:26:08,947 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:26:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 19:26:08,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 19:26:08,985 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 19:26:08,985 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 19:26:08,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:26:09,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:26:09 BoogieIcfgContainer [2020-12-22 19:26:09,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:26:09,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:26:09,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:26:09,019 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:26:09,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:26:05" (3/4) ... [2020-12-22 19:26:09,024 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 19:26:09,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:26:09,026 INFO L168 Benchmark]: Toolchain (without parser) took 5084.01 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 106.8 MB in the beginning and 107.4 MB in the end (delta: -677.2 kB). Peak memory consumption was 37.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:26:09,027 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:26:09,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.38 ms. Allocated memory is still 151.0 MB. Free memory was 106.6 MB in the beginning and 123.9 MB in the end (delta: -17.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:26:09,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.91 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 134.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:26:09,030 INFO L168 Benchmark]: Boogie Preprocessor took 37.51 ms. Allocated memory is still 151.0 MB. Free memory was 134.2 MB in the beginning and 132.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:26:09,030 INFO L168 Benchmark]: RCFGBuilder took 759.09 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 106.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:26:09,031 INFO L168 Benchmark]: TraceAbstraction took 3529.78 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 105.9 MB in the beginning and 107.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 36.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:26:09,032 INFO L168 Benchmark]: Witness Printer took 5.44 ms. Allocated memory is still 187.7 MB. Free memory is still 107.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:26:09,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 624.38 ms. Allocated memory is still 151.0 MB. Free memory was 106.6 MB in the beginning and 123.9 MB in the end (delta: -17.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 116.91 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 134.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.51 ms. Allocated memory is still 151.0 MB. Free memory was 134.2 MB in the beginning and 132.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 759.09 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 106.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3529.78 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 105.9 MB in the beginning and 107.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 36.2 MB. Max. memory is 8.0 GB. * Witness Printer took 5.44 ms. Allocated memory is still 187.7 MB. Free memory is still 107.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] EXPR p->h [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND FALSE !(p->h != 3) [L558] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 440 SDtfs, 687 SDslu, 796 SDs, 0 SdLazy, 1132 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 194 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 7740 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 12/12 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...