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_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:26:08,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:26:08,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:26:08,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:26:08,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:26:08,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:26:08,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:26:08,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:26:08,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:26:08,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:26:08,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:26:08,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:26:08,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:26:08,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:26:08,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:26:08,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:26:08,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:26:08,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:26:08,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:26:08,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:26:08,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:26:08,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:26:08,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:26:08,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:26:08,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:26:08,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:26:08,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:26:08,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:26:08,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:26:08,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:26:08,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:26:08,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:26:08,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:26:08,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:26:08,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:26:08,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:26:08,639 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 [2019-09-20 13:26:08,660 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:26:08,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:26:08,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:26:08,663 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:26:08,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:26:08,664 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:26:08,664 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:26:08,665 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:26:08,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:26:08,665 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:26:08,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:26:08,667 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:26:08,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:26:08,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:26:08,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:26:08,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:26:08,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:26:08,668 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:26:08,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:26:08,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:26:08,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:26:08,669 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:26:08,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:26:08,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:08,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:26:08,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:26:08,670 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:26:08,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:26:08,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:26:08,671 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:26:08,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:26:08,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:26:08,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:26:08,752 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:26:08,752 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:26:08,753 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2019-09-20 13:26:08,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a554d816/9f04c4d1616e457da7d163f30105bcbf/FLAG37a59e627 [2019-09-20 13:26:09,248 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:26:09,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2019-09-20 13:26:09,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a554d816/9f04c4d1616e457da7d163f30105bcbf/FLAG37a59e627 [2019-09-20 13:26:09,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a554d816/9f04c4d1616e457da7d163f30105bcbf [2019-09-20 13:26:09,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:26:09,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:26:09,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:09,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:26:09,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:26:09,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:09" (1/1) ... [2019-09-20 13:26:09,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694f4fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:09, skipping insertion in model container [2019-09-20 13:26:09,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:09" (1/1) ... [2019-09-20 13:26:09,652 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:26:09,707 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:26:10,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:10,063 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:26:10,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:10,175 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:26:10,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10 WrapperNode [2019-09-20 13:26:10,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:10,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:26:10,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:26:10,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:26:10,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10" (1/1) ... [2019-09-20 13:26:10,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10" (1/1) ... [2019-09-20 13:26:10,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10" (1/1) ... [2019-09-20 13:26:10,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10" (1/1) ... [2019-09-20 13:26:10,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10" (1/1) ... [2019-09-20 13:26:10,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10" (1/1) ... [2019-09-20 13:26:10,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10" (1/1) ... [2019-09-20 13:26:10,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:26:10,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:26:10,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:26:10,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:26:10,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:10,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:26:10,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:26:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2019-09-20 13:26:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2019-09-20 13:26:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2019-09-20 13:26:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2019-09-20 13:26:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2019-09-20 13:26:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2019-09-20 13:26:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2019-09-20 13:26:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2019-09-20 13:26:10,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:26:10,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:26:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:26:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:26:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:26:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2019-09-20 13:26:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-09-20 13:26:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-20 13:26:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2019-09-20 13:26:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2019-09-20 13:26:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2019-09-20 13:26:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2019-09-20 13:26:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:26:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2019-09-20 13:26:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2019-09-20 13:26:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-20 13:26:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:26:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:26:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:26:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:26:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:26:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:26:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:26:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:26:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:26:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:26:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:26:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:26:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:26:11,350 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:26:11,350 INFO L283 CfgBuilder]: Removed 7 assume(true) statements. [2019-09-20 13:26:11,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:11 BoogieIcfgContainer [2019-09-20 13:26:11,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:26:11,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:26:11,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:26:11,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:26:11,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:09" (1/3) ... [2019-09-20 13:26:11,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414347fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:11, skipping insertion in model container [2019-09-20 13:26:11,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:10" (2/3) ... [2019-09-20 13:26:11,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414347fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:11, skipping insertion in model container [2019-09-20 13:26:11,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:11" (3/3) ... [2019-09-20 13:26:11,359 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_2.c [2019-09-20 13:26:11,368 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:26:11,375 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:26:11,388 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:26:11,409 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:26:11,409 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:26:11,409 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:26:11,409 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:26:11,410 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:26:11,410 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:26:11,410 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:26:11,410 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:26:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2019-09-20 13:26:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-20 13:26:11,443 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:11,444 INFO L407 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] [2019-09-20 13:26:11,446 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:11,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1024985055, now seen corresponding path program 1 times [2019-09-20 13:26:11,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:11,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:11,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:11,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:11,512 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:11,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:11,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:26:11,766 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:11,770 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:26:11,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:26:11,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:26:11,783 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 2 states. [2019-09-20 13:26:11,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:11,808 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2019-09-20 13:26:11,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:26:11,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-09-20 13:26:11,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:11,821 INFO L225 Difference]: With dead ends: 128 [2019-09-20 13:26:11,821 INFO L226 Difference]: Without dead ends: 119 [2019-09-20 13:26:11,825 INFO L636 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 [2019-09-20 13:26:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-09-20 13:26:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-09-20 13:26:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-09-20 13:26:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2019-09-20 13:26:11,893 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 39 [2019-09-20 13:26:11,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:11,894 INFO L475 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2019-09-20 13:26:11,894 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:26:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2019-09-20 13:26:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-20 13:26:11,897 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:11,898 INFO L407 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] [2019-09-20 13:26:11,898 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:11,899 INFO L82 PathProgramCache]: Analyzing trace with hash 29519587, now seen corresponding path program 1 times [2019-09-20 13:26:11,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:11,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:11,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:11,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:11,902 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:11,971 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-20 13:26:11,972 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-20 13:26:11,972 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 [2019-09-20 13:26:12,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:12,045 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-20 13:26:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:12,117 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-20 13:26:12,118 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-20 13:26:12,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:26:12,118 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 [2019-09-20 13:26:12,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:12,183 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:26:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:12,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-20 13:26:12,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:26:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:12,365 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:26:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:12,432 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:12,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-09-20 13:26:12,433 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:12,434 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:26:12,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:26:12,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:26:12,435 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 4 states. [2019-09-20 13:26:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:12,487 INFO L93 Difference]: Finished difference Result 117 states and 163 transitions. [2019-09-20 13:26:12,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:26:12,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2019-09-20 13:26:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:12,490 INFO L225 Difference]: With dead ends: 117 [2019-09-20 13:26:12,490 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:26:12,491 INFO L636 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 [2019-09-20 13:26:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:26:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:26:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:26:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:26:12,494 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-09-20 13:26:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:12,494 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:26:12,494 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:26:12,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:26:12,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:26:12,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:12 BoogieIcfgContainer [2019-09-20 13:26:12,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:26:12,500 INFO L168 Benchmark]: Toolchain (without parser) took 2862.66 ms. Allocated memory was 132.1 MB in the beginning and 221.2 MB in the end (delta: 89.1 MB). Free memory was 86.7 MB in the beginning and 106.9 MB in the end (delta: -20.3 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:12,501 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 132.1 MB. Free memory is still 105.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:26:12,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.04 ms. Allocated memory was 132.1 MB in the beginning and 198.7 MB in the end (delta: 66.6 MB). Free memory was 86.7 MB in the beginning and 166.9 MB in the end (delta: -80.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:12,503 INFO L168 Benchmark]: Boogie Preprocessor took 105.56 ms. Allocated memory is still 198.7 MB. Free memory was 166.9 MB in the beginning and 161.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:12,504 INFO L168 Benchmark]: RCFGBuilder took 1069.48 ms. Allocated memory is still 198.7 MB. Free memory was 161.9 MB in the beginning and 101.7 MB in the end (delta: 60.2 MB). Peak memory consumption was 60.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:12,505 INFO L168 Benchmark]: TraceAbstraction took 1145.81 ms. Allocated memory was 198.7 MB in the beginning and 221.2 MB in the end (delta: 22.5 MB). Free memory was 101.7 MB in the beginning and 106.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:12,509 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 132.1 MB. Free memory is still 105.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 538.04 ms. Allocated memory was 132.1 MB in the beginning and 198.7 MB in the end (delta: 66.6 MB). Free memory was 86.7 MB in the beginning and 166.9 MB in the end (delta: -80.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.56 ms. Allocated memory is still 198.7 MB. Free memory was 166.9 MB in the beginning and 161.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1069.48 ms. Allocated memory is still 198.7 MB. Free memory was 161.9 MB in the beginning and 101.7 MB in the end (delta: 60.2 MB). Peak memory consumption was 60.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1145.81 ms. Allocated memory was 198.7 MB in the beginning and 221.2 MB in the end (delta: 22.5 MB). Free memory was 101.7 MB in the beginning and 106.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 17.3 MB. 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, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 4636 SizeOfPredicates, 5 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...