/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:04:51,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:04:51,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:04:52,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:04:52,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:04:52,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:04:52,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:04:52,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:04:52,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:04:52,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:04:52,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:04:52,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:04:52,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:04:52,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:04:52,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:04:52,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:04:52,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:04:52,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:04:52,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:04:52,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:04:52,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:04:52,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:04:52,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:04:52,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:04:52,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:04:52,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:04:52,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:04:52,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:04:52,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:04:52,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:04:52,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:04:52,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:04:52,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:04:52,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:04:52,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:04:52,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:04:52,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:04:52,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:04:52,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:04:52,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:04:52,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:04:52,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:04:52,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:04:52,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:04:52,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:04:52,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:04:52,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:04:52,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:04:52,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:04:52,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:04:52,117 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:04:52,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:04:52,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:04:52,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:04:52,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:04:52,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:04:52,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:04:52,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:04:52,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:04:52,120 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:04:52,120 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:04:52,120 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:04:52,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:04:52,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:04:52,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:04:52,121 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:04:52,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:04:52,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:04:52,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:04:52,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:04:52,336 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:04:52,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2022-01-10 06:04:52,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9937582d/e1b1e3acdc404108ae752a3e12abf685/FLAG16a39e0c6 [2022-01-10 06:04:52,772 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:04:52,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2022-01-10 06:04:52,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9937582d/e1b1e3acdc404108ae752a3e12abf685/FLAG16a39e0c6 [2022-01-10 06:04:53,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9937582d/e1b1e3acdc404108ae752a3e12abf685 [2022-01-10 06:04:53,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:04:53,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:04:53,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:04:53,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:04:53,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:04:53,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199a1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53, skipping insertion in model container [2022-01-10 06:04:53,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:04:53,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:04:53,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22324,22337] [2022-01-10 06:04:53,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22430,22443] [2022-01-10 06:04:53,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22554,22567] [2022-01-10 06:04:53,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:04:53,436 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:04:53,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22324,22337] [2022-01-10 06:04:53,460 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22430,22443] [2022-01-10 06:04:53,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i[22554,22567] [2022-01-10 06:04:53,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:04:53,485 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:04:53,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53 WrapperNode [2022-01-10 06:04:53,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:04:53,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:04:53,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:04:53,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:04:53,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,521 INFO L137 Inliner]: procedures = 122, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 112 [2022-01-10 06:04:53,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:04:53,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:04:53,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:04:53,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:04:53,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:04:53,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:04:53,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:04:53,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:04:53,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (1/1) ... [2022-01-10 06:04:53,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:04:53,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:04:53,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:04:53,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:04:53,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 06:04:53,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 06:04:53,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:04:53,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 06:04:53,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 06:04:53,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 06:04:53,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 06:04:53,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:04:53,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:04:53,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:04:53,689 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:04:53,690 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:04:53,919 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:04:53,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:04:53,923 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 06:04:53,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:53 BoogieIcfgContainer [2022-01-10 06:04:53,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:04:53,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:04:53,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:04:53,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:04:53,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:04:53" (1/3) ... [2022-01-10 06:04:53,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382c2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:04:53, skipping insertion in model container [2022-01-10 06:04:53,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53" (2/3) ... [2022-01-10 06:04:53,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382c2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:04:53, skipping insertion in model container [2022-01-10 06:04:53,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:53" (3/3) ... [2022-01-10 06:04:53,939 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2022-01-10 06:04:53,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:04:53,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 06:04:53,973 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:04:53,978 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:04:53,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 06:04:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 06:04:53,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:04:53,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 06:04:53,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:04:53,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:04:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash 890861318, now seen corresponding path program 1 times [2022-01-10 06:04:54,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:04:54,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073953541] [2022-01-10 06:04:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:04:54,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:04:54,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:04:54,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:04:54,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:04:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:04:54,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:04:54,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:04:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:04:54,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:04:54,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:04:54,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073953541] [2022-01-10 06:04:54,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073953541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:04:54,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:04:54,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:04:54,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873738161] [2022-01-10 06:04:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:04:54,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:04:54,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:04:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:04:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:04:54,145 INFO L87 Difference]: Start difference. First operand has 32 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:04:54,157 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2022-01-10 06:04:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:04:54,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-10 06:04:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:04:54,163 INFO L225 Difference]: With dead ends: 62 [2022-01-10 06:04:54,163 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 06:04:54,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:04:54,168 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:04:54,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:04:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 06:04:54,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 06:04:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-01-10 06:04:54,191 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 6 [2022-01-10 06:04:54,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:04:54,192 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-01-10 06:04:54,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-01-10 06:04:54,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 06:04:54,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:04:54,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 06:04:54,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:04:54,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:04:54,402 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:04:54,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:04:54,405 INFO L85 PathProgramCache]: Analyzing trace with hash 889669678, now seen corresponding path program 1 times [2022-01-10 06:04:54,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:04:54,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065450226] [2022-01-10 06:04:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:04:54,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:04:54,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:04:54,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:04:54,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:04:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:04:54,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 06:04:54,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:04:54,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:04:54,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-01-10 06:04:54,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-01-10 06:04:54,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-10 06:04:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:04:54,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:04:54,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:04:54,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065450226] [2022-01-10 06:04:54,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065450226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:04:54,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:04:54,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:04:54,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826388911] [2022-01-10 06:04:54,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:04:54,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:04:54,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:04:54,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:04:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:04:54,719 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:04:54,826 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-01-10 06:04:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:04:54,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-10 06:04:54,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:04:54,828 INFO L225 Difference]: With dead ends: 40 [2022-01-10 06:04:54,828 INFO L226 Difference]: Without dead ends: 36 [2022-01-10 06:04:54,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:04:54,829 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:04:54,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 43 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:04:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-10 06:04:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-01-10 06:04:54,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-01-10 06:04:54,833 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 6 [2022-01-10 06:04:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:04:54,833 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-01-10 06:04:54,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-01-10 06:04:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 06:04:54,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:04:54,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:04:54,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 06:04:55,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:04:55,041 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:04:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:04:55,041 INFO L85 PathProgramCache]: Analyzing trace with hash 585866601, now seen corresponding path program 1 times [2022-01-10 06:04:55,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:04:55,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071115880] [2022-01-10 06:04:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:04:55,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:04:55,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:04:55,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:04:55,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:04:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:04:55,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:04:55,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:04:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:04:55,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:04:55,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:04:55,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071115880] [2022-01-10 06:04:55,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071115880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:04:55,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:04:55,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:04:55,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201636405] [2022-01-10 06:04:55,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:04:55,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:04:55,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:04:55,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:04:55,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:04:55,147 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:55,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:04:55,181 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2022-01-10 06:04:55,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:04:55,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 06:04:55,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:04:55,183 INFO L225 Difference]: With dead ends: 67 [2022-01-10 06:04:55,183 INFO L226 Difference]: Without dead ends: 46 [2022-01-10 06:04:55,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:04:55,184 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:04:55,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:04:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-10 06:04:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2022-01-10 06:04:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:55,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-01-10 06:04:55,188 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 9 [2022-01-10 06:04:55,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:04:55,189 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-01-10 06:04:55,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-01-10 06:04:55,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 06:04:55,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:04:55,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:04:55,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:04:55,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:04:55,390 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:04:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:04:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2030465191, now seen corresponding path program 1 times [2022-01-10 06:04:55,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:04:55,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237085636] [2022-01-10 06:04:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:04:55,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:04:55,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:04:55,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:04:55,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:04:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:04:55,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 06:04:55,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:04:55,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 06:04:55,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-01-10 06:04:55,544 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 06:04:55,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-01-10 06:04:55,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 06:04:55,570 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:04:55,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2022-01-10 06:04:55,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 06:04:55,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-01-10 06:04:55,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-01-10 06:04:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:04:55,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:04:55,693 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_127 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_127) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 64)))) is different from false [2022-01-10 06:04:55,728 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:04:55,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2022-01-10 06:04:55,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:04:55,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 42 [2022-01-10 06:04:55,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-01-10 06:04:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-10 06:04:55,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:04:55,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237085636] [2022-01-10 06:04:55,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237085636] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:04:55,840 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:04:55,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 06:04:55,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061018567] [2022-01-10 06:04:55,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:04:55,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:04:55,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:04:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:04:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-01-10 06:04:55,841 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:04:55,947 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2022-01-10 06:04:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:04:55,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-10 06:04:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:04:55,948 INFO L225 Difference]: With dead ends: 56 [2022-01-10 06:04:55,948 INFO L226 Difference]: Without dead ends: 54 [2022-01-10 06:04:55,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=27, Unknown=1, NotChecked=10, Total=56 [2022-01-10 06:04:55,949 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:04:55,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 81 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2022-01-10 06:04:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-10 06:04:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2022-01-10 06:04:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.325) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2022-01-10 06:04:55,953 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 11 [2022-01-10 06:04:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:04:55,954 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2022-01-10 06:04:55,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:04:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2022-01-10 06:04:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 06:04:55,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:04:55,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:04:55,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:04:56,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:04:56,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:04:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:04:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash -391921798, now seen corresponding path program 1 times [2022-01-10 06:04:56,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:04:56,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500748353] [2022-01-10 06:04:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:04:56,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:04:56,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:04:56,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:04:56,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:04:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 06:04:56,243 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 06:04:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 06:04:56,322 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-01-10 06:04:56,322 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 06:04:56,323 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 06:04:56,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 06:04:56,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 06:04:56,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:04:56,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:04:56,528 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-10 06:04:56,530 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 06:04:56,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:04:56 BoogieIcfgContainer [2022-01-10 06:04:56,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 06:04:56,547 INFO L158 Benchmark]: Toolchain (without parser) took 3401.90ms. Allocated memory was 182.5MB in the beginning and 267.4MB in the end (delta: 84.9MB). Free memory was 125.0MB in the beginning and 106.0MB in the end (delta: 19.1MB). Peak memory consumption was 103.7MB. Max. memory is 8.0GB. [2022-01-10 06:04:56,547 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 06:04:56,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.65ms. Allocated memory was 182.5MB in the beginning and 267.4MB in the end (delta: 84.9MB). Free memory was 124.8MB in the beginning and 231.3MB in the end (delta: -106.4MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2022-01-10 06:04:56,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.45ms. Allocated memory is still 267.4MB. Free memory was 230.7MB in the beginning and 229.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 06:04:56,547 INFO L158 Benchmark]: Boogie Preprocessor took 46.26ms. Allocated memory is still 267.4MB. Free memory was 229.2MB in the beginning and 227.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 06:04:56,548 INFO L158 Benchmark]: RCFGBuilder took 355.68ms. Allocated memory is still 267.4MB. Free memory was 227.1MB in the beginning and 212.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-01-10 06:04:56,548 INFO L158 Benchmark]: TraceAbstraction took 2620.98ms. Allocated memory is still 267.4MB. Free memory was 211.9MB in the beginning and 106.0MB in the end (delta: 105.9MB). Peak memory consumption was 105.9MB. Max. memory is 8.0GB. [2022-01-10 06:04:56,557 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 339.65ms. Allocated memory was 182.5MB in the beginning and 267.4MB in the end (delta: 84.9MB). Free memory was 124.8MB in the beginning and 231.3MB in the end (delta: -106.4MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.45ms. Allocated memory is still 267.4MB. Free memory was 230.7MB in the beginning and 229.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.26ms. Allocated memory is still 267.4MB. Free memory was 229.2MB in the beginning and 227.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 355.68ms. Allocated memory is still 267.4MB. Free memory was 227.1MB in the beginning and 212.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2620.98ms. Allocated memory is still 267.4MB. Free memory was 211.9MB in the beginning and 106.0MB in the end (delta: 105.9MB). Peak memory consumption was 105.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1032]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int state = 1; VAL [head={70368744177666:0}, state=1, x={70368744177666:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state [L1027] EXPR head->next [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={70368744177666:0}, state=1, x={70368744177666:0}] [L1030] EXPR x->data VAL [head={70368744177666:0}, state=1, x={70368744177666:0}, x->data=1] [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] EXPR x->data [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={70368744177666:0}, state=1, x={70368744177666:0}, x->data=1, x->next={70368744177666:0}, x->next={70368744177666:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] reach_error() VAL [head={70368744177666:0}, state=1, x={70368744177666:0}] - UnprovableResult [Line: 1023]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 208 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 46 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 114 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 38 ConstructedInterpolants, 7 QuantifiedInterpolants, 282 SizeOfPredicates, 7 NumberOfNonLiveVariables, 284 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-10 06:04:56,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...