/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/sina2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:47:32,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:47:32,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:47:32,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:47:32,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:47:32,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:47:32,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:47:32,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:47:32,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:47:32,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:47:32,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:47:32,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:47:32,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:47:32,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:47:32,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:47:32,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:47:32,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:47:32,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:47:32,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:47:32,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:47:32,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:47:32,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:47:32,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:47:32,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:47:32,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:47:32,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:47:32,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:47:32,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:47:32,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:47:32,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:47:32,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:47:32,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:47:32,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:47:32,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:47:32,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:47:32,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:47:32,087 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 11:47:32,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:47:32,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:47:32,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:47:32,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:47:32,104 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:47:32,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:47:32,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:47:32,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:47:32,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:47:32,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:47:32,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:47:32,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:47:32,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:47:32,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:47:32,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:47:32,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:47:32,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:47:32,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:47:32,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:47:32,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:47:32,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:47:32,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:47:32,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:47:32,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:47:32,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:47:32,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:47:32,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:32,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:47:32,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:47:32,110 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 11:47:32,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:47:32,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:47:32,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:47:32,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:47:32,428 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:47:32,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina2f.c [2020-07-20 11:47:32,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3a5534bd/c875e6f19bf54942816381f90a84c44d/FLAG0a6839b06 [2020-07-20 11:47:32,998 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:47:32,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina2f.c [2020-07-20 11:47:33,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3a5534bd/c875e6f19bf54942816381f90a84c44d/FLAG0a6839b06 [2020-07-20 11:47:33,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3a5534bd/c875e6f19bf54942816381f90a84c44d [2020-07-20 11:47:33,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:47:33,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:47:33,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:47:33,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:47:33,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:47:33,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:47:33" (1/1) ... [2020-07-20 11:47:33,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731798e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33, skipping insertion in model container [2020-07-20 11:47:33,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:47:33" (1/1) ... [2020-07-20 11:47:33,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:47:33,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:47:33,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:47:33,578 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:47:33,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:47:33,620 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:47:33,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33 WrapperNode [2020-07-20 11:47:33,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:47:33,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:47:33,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:47:33,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:47:33,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33" (1/1) ... [2020-07-20 11:47:33,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33" (1/1) ... [2020-07-20 11:47:33,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33" (1/1) ... [2020-07-20 11:47:33,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33" (1/1) ... [2020-07-20 11:47:33,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33" (1/1) ... [2020-07-20 11:47:33,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33" (1/1) ... [2020-07-20 11:47:33,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33" (1/1) ... [2020-07-20 11:47:33,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:47:33,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:47:33,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:47:33,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:47:33,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33" (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 11:47:33,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:47:33,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:47:33,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:47:33,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:47:33,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:47:33,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:47:33,840 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:47:33,840 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:47:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:47:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:47:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:47:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:47:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:47:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:47:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:47:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:47:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:47:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:47:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:47:34,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:47:34,121 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 11:47:34,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:47:34 BoogieIcfgContainer [2020-07-20 11:47:34,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:47:34,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:47:34,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:47:34,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:47:34,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:47:33" (1/3) ... [2020-07-20 11:47:34,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbfd822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:47:34, skipping insertion in model container [2020-07-20 11:47:34,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:33" (2/3) ... [2020-07-20 11:47:34,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbfd822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:47:34, skipping insertion in model container [2020-07-20 11:47:34,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:47:34" (3/3) ... [2020-07-20 11:47:34,155 INFO L109 eAbstractionObserver]: Analyzing ICFG sina2f.c [2020-07-20 11:47:34,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:47:34,206 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:47:34,238 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:47:34,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:47:34,263 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:47:34,264 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:47:34,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:47:34,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:47:34,264 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:47:34,264 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:47:34,264 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:47:34,285 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-20 11:47:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 11:47:34,292 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:34,293 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] [2020-07-20 11:47:34,294 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:34,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-07-20 11:47:34,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:34,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290117515] [2020-07-20 11:47:34,311 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 11:47:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:47:34,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:47:34,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:47:34,428 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 11:47:34,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:47:34,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290117515] [2020-07-20 11:47:34,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:47:34,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:47:34,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651669155] [2020-07-20 11:47:34,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:47:34,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:47:34,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:47:34,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:47:34,457 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-07-20 11:47:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:47:34,486 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-20 11:47:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:47:34,488 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-20 11:47:34,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:47:34,498 INFO L225 Difference]: With dead ends: 64 [2020-07-20 11:47:34,500 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 11:47:34,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 11:47:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 11:47:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-20 11:47:34,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 11:47:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-20 11:47:34,561 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-07-20 11:47:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:47:34,561 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-20 11:47:34,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:47:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-20 11:47:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 11:47:34,564 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:34,564 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] [2020-07-20 11:47:34,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:34,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:34,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:34,782 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-07-20 11:47:34,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:34,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774009146] [2020-07-20 11:47:34,784 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 11:47:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:47:34,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:47:34,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:47:34,909 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 11:47:34,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:47:34,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774009146] [2020-07-20 11:47:34,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:47:34,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:47:34,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606241522] [2020-07-20 11:47:34,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:47:34,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:47:34,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:47:34,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:47:34,914 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 4 states. [2020-07-20 11:47:35,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:47:35,014 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-07-20 11:47:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:47:35,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 11:47:35,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:47:35,018 INFO L225 Difference]: With dead ends: 59 [2020-07-20 11:47:35,018 INFO L226 Difference]: Without dead ends: 42 [2020-07-20 11:47:35,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 11:47:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-20 11:47:35,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-07-20 11:47:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 11:47:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-07-20 11:47:35,033 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-07-20 11:47:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:47:35,034 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-07-20 11:47:35,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:47:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-07-20 11:47:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:47:35,035 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:35,035 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] [2020-07-20 11:47:35,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:35,241 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:35,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:35,243 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-07-20 11:47:35,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:35,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165801197] [2020-07-20 11:47:35,244 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 11:47:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:47:35,314 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:47:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:47:35,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:47:35,362 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:47:35,363 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:47:35,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:35,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:47:35 BoogieIcfgContainer [2020-07-20 11:47:35,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:47:35,623 INFO L168 Benchmark]: Toolchain (without parser) took 2287.89 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 102.2 MB in the beginning and 100.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:35,624 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 11:47:35,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.22 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 91.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:35,627 INFO L168 Benchmark]: Boogie Preprocessor took 159.83 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.3 MB in the beginning and 179.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:35,628 INFO L168 Benchmark]: RCFGBuilder took 344.33 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 161.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:35,629 INFO L168 Benchmark]: TraceAbstraction took 1487.47 ms. Allocated memory is still 201.9 MB. Free memory was 161.3 MB in the beginning and 100.2 MB in the end (delta: 61.1 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:35,633 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.22 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 91.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.83 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.3 MB in the beginning and 179.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 344.33 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 161.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1487.47 ms. Allocated memory is still 201.9 MB. Free memory was 161.3 MB in the beginning and 100.2 MB in the end (delta: 61.1 MB). Peak memory consumption was 61.1 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)=4, 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] = 1 [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