java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 13:09:10,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:09:10,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:09:10,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 13:09:10,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 13:09:10,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 13:09:10,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 13:09:10,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 13:09:10,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 13:09:10,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 13:09:10,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 13:09:10,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 13:09:10,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 13:09:10,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 13:09:10,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 13:09:10,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 13:09:10,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 13:09:10,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 13:09:10,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 13:09:10,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 13:09:10,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 13:09:10,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 13:09:10,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 13:09:10,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 13:09:10,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 13:09:10,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 13:09:10,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 13:09:10,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 13:09:10,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 13:09:10,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 13:09:10,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 13:09:10,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 13:09:10,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 13:09:10,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 13:09:10,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 13:09:10,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 13:09:10,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-05 13:09:10,859 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:09:10,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:09:10,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:09:10,860 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:09:10,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:09:10,861 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:09:10,861 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:09:10,861 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:09:10,862 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:09:10,862 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:09:10,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:09:10,864 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:09:10,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:09:10,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:09:10,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:09:10,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:09:10,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:09:10,865 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:09:10,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:09:10,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:09:10,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:09:10,866 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:09:10,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:09:10,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:09:10,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:09:10,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:09:10,868 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:09:10,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:09:10,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:09:10,868 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:09:10,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:09:10,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:09:10,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:09:10,948 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:09:10,949 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:09:10,950 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2019-09-05 13:09:11,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98bf64bda/aeb5b69487544f68968d494243035b98/FLAG972770602 [2019-09-05 13:09:11,482 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:09:11,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2019-09-05 13:09:11,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98bf64bda/aeb5b69487544f68968d494243035b98/FLAG972770602 [2019-09-05 13:09:11,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98bf64bda/aeb5b69487544f68968d494243035b98 [2019-09-05 13:09:11,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:09:11,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:09:11,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:09:11,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:09:11,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:09:11,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:09:11" (1/1) ... [2019-09-05 13:09:11,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@696f39a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:11, skipping insertion in model container [2019-09-05 13:09:11,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:09:11" (1/1) ... [2019-09-05 13:09:11,859 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:09:11,897 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:09:12,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:09:12,296 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:09:12,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:09:12,437 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:09:12,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12 WrapperNode [2019-09-05 13:09:12,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:09:12,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:09:12,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:09:12,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:09:12,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12" (1/1) ... [2019-09-05 13:09:12,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12" (1/1) ... [2019-09-05 13:09:12,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12" (1/1) ... [2019-09-05 13:09:12,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12" (1/1) ... [2019-09-05 13:09:12,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12" (1/1) ... [2019-09-05 13:09:12,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12" (1/1) ... [2019-09-05 13:09:12,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12" (1/1) ... [2019-09-05 13:09:12,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:09:12,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:09:12,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:09:12,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:09:12,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12" (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 [2019-09-05 13:09:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:09:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:09:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2019-09-05 13:09:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2019-09-05 13:09:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2019-09-05 13:09:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2019-09-05 13:09:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2019-09-05 13:09:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2019-09-05 13:09:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2019-09-05 13:09:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2019-09-05 13:09:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:09:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 13:09:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:09:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 13:09:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-05 13:09:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2019-09-05 13:09:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-09-05 13:09:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-05 13:09:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2019-09-05 13:09:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2019-09-05 13:09:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2019-09-05 13:09:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2019-09-05 13:09:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-05 13:09:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2019-09-05 13:09:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2019-09-05 13:09:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-05 13:09:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:09:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:09:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-05 13:09:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-05 13:09:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-05 13:09:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-05 13:09:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-05 13:09:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-05 13:09:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-05 13:09:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-05 13:09:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:09:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-05 13:09:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:09:13,433 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:09:13,433 INFO L283 CfgBuilder]: Removed 7 assume(true) statements. [2019-09-05 13:09:13,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:09:13 BoogieIcfgContainer [2019-09-05 13:09:13,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:09:13,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 13:09:13,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 13:09:13,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 13:09:13,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 01:09:11" (1/3) ... [2019-09-05 13:09:13,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d1b241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:09:13, skipping insertion in model container [2019-09-05 13:09:13,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:09:12" (2/3) ... [2019-09-05 13:09:13,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d1b241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 01:09:13, skipping insertion in model container [2019-09-05 13:09:13,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:09:13" (3/3) ... [2019-09-05 13:09:13,443 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_3.c [2019-09-05 13:09:13,453 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 13:09:13,464 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 13:09:13,480 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 13:09:13,502 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 13:09:13,503 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 13:09:13,503 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 13:09:13,503 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 13:09:13,504 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 13:09:13,504 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 13:09:13,504 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 13:09:13,504 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 13:09:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2019-09-05 13:09:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-05 13:09:13,539 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:09:13,540 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:09:13,543 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:09:13,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:09:13,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1024985055, now seen corresponding path program 1 times [2019-09-05 13:09:13,551 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:09:13,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:09:13,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:09:13,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:09:13,598 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:09:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:09:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:09:13,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:09:13,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 13:09:13,862 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:09:13,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 13:09:13,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 13:09:13,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 13:09:13,881 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 2 states. [2019-09-05 13:09:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:09:13,917 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2019-09-05 13:09:13,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 13:09:13,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-09-05 13:09:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:09:13,934 INFO L225 Difference]: With dead ends: 128 [2019-09-05 13:09:13,935 INFO L226 Difference]: Without dead ends: 119 [2019-09-05 13:09:13,942 INFO L628 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 [2019-09-05 13:09:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-09-05 13:09:14,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-09-05 13:09:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-09-05 13:09:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2019-09-05 13:09:14,035 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 39 [2019-09-05 13:09:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:09:14,035 INFO L475 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2019-09-05 13:09:14,036 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 13:09:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2019-09-05 13:09:14,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-05 13:09:14,043 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 13:09:14,044 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 13:09:14,044 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 13:09:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 13:09:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash 29519587, now seen corresponding path program 1 times [2019-09-05 13:09:14,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 13:09:14,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:09:14,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:09:14,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 13:09:14,071 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 13:09:14,156 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 13:09:14,156 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 13:09:14,156 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 13:09:14,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:09:14,172 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-05 13:09:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-05 13:09:14,232 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-05 13:09:14,233 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-05 13:09:14,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 13:09:14,233 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 13:09:14,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 13:09:14,257 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-05 13:09:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 13:09:14,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-05 13:09:14,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 13:09:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:09:14,433 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-05 13:09:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 13:09:14,490 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-05 13:09:14,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-09-05 13:09:14,491 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 13:09:14,492 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 13:09:14,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 13:09:14,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-05 13:09:14,493 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 4 states. [2019-09-05 13:09:14,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 13:09:14,541 INFO L93 Difference]: Finished difference Result 117 states and 163 transitions. [2019-09-05 13:09:14,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 13:09:14,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2019-09-05 13:09:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 13:09:14,544 INFO L225 Difference]: With dead ends: 117 [2019-09-05 13:09:14,544 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 13:09:14,545 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-05 13:09:14,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 13:09:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 13:09:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 13:09:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 13:09:14,547 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-09-05 13:09:14,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 13:09:14,547 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 13:09:14,548 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 13:09:14,548 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 13:09:14,548 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 13:09:14,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 01:09:14 BoogieIcfgContainer [2019-09-05 13:09:14,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 13:09:14,559 INFO L168 Benchmark]: Toolchain (without parser) took 2711.47 ms. Allocated memory was 139.5 MB in the beginning and 222.8 MB in the end (delta: 83.4 MB). Free memory was 84.5 MB in the beginning and 135.8 MB in the end (delta: -51.3 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2019-09-05 13:09:14,560 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 104.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 13:09:14,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.32 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 84.1 MB in the beginning and 168.2 MB in the end (delta: -84.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-09-05 13:09:14,563 INFO L168 Benchmark]: Boogie Preprocessor took 83.80 ms. Allocated memory is still 199.2 MB. Free memory was 168.2 MB in the beginning and 164.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-09-05 13:09:14,564 INFO L168 Benchmark]: RCFGBuilder took 912.34 ms. Allocated memory is still 199.2 MB. Free memory was 164.3 MB in the beginning and 105.2 MB in the end (delta: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. [2019-09-05 13:09:14,566 INFO L168 Benchmark]: TraceAbstraction took 1119.22 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 105.2 MB in the beginning and 135.8 MB in the end (delta: -30.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-05 13:09:14,575 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 104.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 592.32 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 84.1 MB in the beginning and 168.2 MB in the end (delta: -84.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.80 ms. Allocated memory is still 199.2 MB. Free memory was 168.2 MB in the beginning and 164.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 912.34 ms. Allocated memory is still 199.2 MB. Free memory was 164.3 MB in the beginning and 105.2 MB in the end (delta: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1119.22 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 105.2 MB in the beginning and 135.8 MB in the end (delta: -30.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 458]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 128 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 335 SDtfs, 5 SDslu, 317 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 4636 SizeOfPredicates, 4 NumberOfNonLiveVariables, 532 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...