/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:47:36,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:47:36,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:47:36,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:47:36,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:47:36,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:47:36,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:47:36,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:47:36,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:47:36,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:47:36,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:47:36,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:47:36,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:47:36,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:47:36,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:47:36,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:47:36,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:47:36,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:47:36,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:47:36,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:47:36,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:47:36,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:47:36,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:47:36,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:47:36,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:47:36,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:47:36,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:47:36,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:47:36,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:47:36,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:47:36,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:47:36,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:47:36,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:47:36,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:47:36,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:47:36,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:47:36,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:47:36,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:47:36,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:47:36,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:47:36,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:47:36,139 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:47:36,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:47:36,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:47:36,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:47:36,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:47:36,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:47:36,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:47:36,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:47:36,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:47:36,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:47:36,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:47:36,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:47:36,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:47:36,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:47:36,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:47:36,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:47:36,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:47:36,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:47:36,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:47:36,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:47:36,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:47:36,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:47:36,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:36,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:47:36,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:47:36,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:47:36,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:47:36,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:47:36,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:47:36,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:47:36,474 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:47:36,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2020-07-20 11:47:36,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fb2ff28/f8e09010f8ff468388fd727637e80741/FLAG457b415a8 [2020-07-20 11:47:37,128 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:47:37,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss1f.c [2020-07-20 11:47:37,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fb2ff28/f8e09010f8ff468388fd727637e80741/FLAG457b415a8 [2020-07-20 11:47:37,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fb2ff28/f8e09010f8ff468388fd727637e80741 [2020-07-20 11:47:37,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:47:37,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:47:37,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:47:37,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:47:37,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:47:37,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:47:37" (1/1) ... [2020-07-20 11:47:37,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e70ca17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37, skipping insertion in model container [2020-07-20 11:47:37,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:47:37" (1/1) ... [2020-07-20 11:47:37,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:47:37,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:47:37,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:47:37,773 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:47:37,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:47:37,815 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:47:37,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37 WrapperNode [2020-07-20 11:47:37,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:47:37,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:47:37,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:47:37,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:47:37,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37" (1/1) ... [2020-07-20 11:47:37,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37" (1/1) ... [2020-07-20 11:47:37,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37" (1/1) ... [2020-07-20 11:47:37,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37" (1/1) ... [2020-07-20 11:47:37,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37" (1/1) ... [2020-07-20 11:47:37,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37" (1/1) ... [2020-07-20 11:47:37,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37" (1/1) ... [2020-07-20 11:47:37,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:47:37,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:47:37,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:47:37,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:47:37,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:47:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:47:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:47:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:47:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:47:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:47:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:47:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:47:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:47:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:47:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:47:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:47:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:47:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:47:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:47:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:47:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:47:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:47:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:47:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:47:38,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:47:38,365 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 11:47:38,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:47:38 BoogieIcfgContainer [2020-07-20 11:47:38,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:47:38,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:47:38,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:47:38,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:47:38,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:47:37" (1/3) ... [2020-07-20 11:47:38,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b386b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:47:38, skipping insertion in model container [2020-07-20 11:47:38,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:37" (2/3) ... [2020-07-20 11:47:38,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b386b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:47:38, skipping insertion in model container [2020-07-20 11:47:38,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:47:38" (3/3) ... [2020-07-20 11:47:38,386 INFO L109 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-07-20 11:47:38,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:47:38,414 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:47:38,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:47:38,464 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:47:38,464 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:47:38,464 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:47:38,465 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:47:38,465 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:47:38,465 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:47:38,466 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:47:38,466 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:47:38,490 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-20 11:47:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 11:47:38,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:38,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:47:38,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:38,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:38,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-07-20 11:47:38,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:38,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124548496] [2020-07-20 11:47:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:47:38,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:47:38,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:47:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:47:38,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:47:38,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124548496] [2020-07-20 11:47:38,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:47:38,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:47:38,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124331359] [2020-07-20 11:47:38,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:47:38,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:47:38,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:47:38,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:47:38,697 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-07-20 11:47:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:47:38,730 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-20 11:47:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:47:38,731 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 11:47:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:47:38,740 INFO L225 Difference]: With dead ends: 64 [2020-07-20 11:47:38,740 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 11:47:38,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:47:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 11:47:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-20 11:47:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 11:47:38,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 11:47:38,795 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-07-20 11:47:38,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:47:38,796 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 11:47:38,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:47:38,797 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 11:47:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 11:47:38,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:38,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:47:39,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:39,013 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:39,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:39,014 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-07-20 11:47:39,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:39,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465830920] [2020-07-20 11:47:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:47:39,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:47:39,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:47:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:47:39,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:47:39,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465830920] [2020-07-20 11:47:39,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:47:39,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:47:39,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840481750] [2020-07-20 11:47:39,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:47:39,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:47:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:47:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:47:39,219 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2020-07-20 11:47:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:47:39,336 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-20 11:47:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:47:39,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-20 11:47:39,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:47:39,339 INFO L225 Difference]: With dead ends: 53 [2020-07-20 11:47:39,339 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 11:47:39,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:47:39,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 11:47:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-07-20 11:47:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-20 11:47:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-07-20 11:47:39,352 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-07-20 11:47:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:47:39,352 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-07-20 11:47:39,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:47:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-07-20 11:47:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 11:47:39,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:39,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:47:39,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:39,570 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:39,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:39,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-07-20 11:47:39,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:39,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103438546] [2020-07-20 11:47:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:47:39,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:47:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:47:39,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:47:39,684 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:47:39,685 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:47:39,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:39,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:47:39 BoogieIcfgContainer [2020-07-20 11:47:39,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:47:39,955 INFO L168 Benchmark]: Toolchain (without parser) took 2468.58 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.7 MB in the beginning and 100.1 MB in the end (delta: 625.0 kB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:39,956 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 11:47:39,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.06 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 89.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:39,959 INFO L168 Benchmark]: Boogie Preprocessor took 138.61 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 89.7 MB in the beginning and 179.3 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:39,962 INFO L168 Benchmark]: RCFGBuilder took 416.30 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 161.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:39,963 INFO L168 Benchmark]: TraceAbstraction took 1577.85 ms. Allocated memory is still 201.9 MB. Free memory was 161.3 MB in the beginning and 100.1 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:39,974 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.06 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 89.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.61 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 89.7 MB in the beginning and 179.3 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.30 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 161.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1577.85 ms. Allocated memory is still 201.9 MB. Free memory was 161.3 MB in the beginning and 100.1 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=5, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i