/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/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:39:09,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:39:09,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:39:09,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:39:09,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:39:09,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:39:09,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:39:09,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:39:09,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:39:09,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:39:09,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:39:09,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:39:09,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:39:09,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:39:09,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:39:09,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:39:09,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:39:09,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:39:09,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:39:09,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:39:09,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:39:09,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:39:09,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:39:09,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:39:09,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:39:09,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:39:09,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:39:09,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:39:09,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:39:09,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:39:09,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:39:09,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:39:09,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:39:09,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:39:09,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:39:09,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:39:09,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:39:09,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:39:09,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:39:09,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:39:09,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:39:09,308 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 [2020-07-21 11:39:09,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:39:09,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:39:09,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:39:09,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:39:09,344 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:39:09,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:39:09,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:39:09,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:39:09,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:39:09,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:39:09,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:39:09,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:39:09,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:39:09,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:39:09,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:39:09,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:39:09,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:39:09,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:39:09,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:39:09,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:39:09,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:39:09,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:39:09,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:39:09,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:39:09,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:39:09,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:39:09,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:39:09,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:39:09,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:39:09,356 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 [2020-07-21 11:39:09,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:39:09,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:39:09,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:39:09,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:39:09,744 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:39:09,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2020-07-21 11:39:09,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96eea7d7b/bee8d992244c411a9f40dbd50cd10047/FLAG43b4507c2 [2020-07-21 11:39:10,347 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:39:10,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina1f.c [2020-07-21 11:39:10,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96eea7d7b/bee8d992244c411a9f40dbd50cd10047/FLAG43b4507c2 [2020-07-21 11:39:10,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96eea7d7b/bee8d992244c411a9f40dbd50cd10047 [2020-07-21 11:39:10,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:39:10,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:39:10,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:39:10,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:39:10,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:39:10,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:39:10" (1/1) ... [2020-07-21 11:39:10,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30732442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:10, skipping insertion in model container [2020-07-21 11:39:10,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:39:10" (1/1) ... [2020-07-21 11:39:10,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:39:10,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:39:10,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:39:10,989 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:39:11,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:39:11,028 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:39:11,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11 WrapperNode [2020-07-21 11:39:11,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:39:11,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:39:11,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:39:11,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:39:11,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11" (1/1) ... [2020-07-21 11:39:11,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11" (1/1) ... [2020-07-21 11:39:11,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11" (1/1) ... [2020-07-21 11:39:11,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11" (1/1) ... [2020-07-21 11:39:11,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11" (1/1) ... [2020-07-21 11:39:11,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11" (1/1) ... [2020-07-21 11:39:11,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11" (1/1) ... [2020-07-21 11:39:11,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:39:11,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:39:11,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:39:11,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:39:11,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11" (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 [2020-07-21 11:39:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 11:39:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:39:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:39:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:39:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:39:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 11:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 11:39:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 11:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 11:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 11:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:39:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:39:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:39:11,590 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:39:11,591 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-21 11:39:11,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:39:11 BoogieIcfgContainer [2020-07-21 11:39:11,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:39:11,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:39:11,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:39:11,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:39:11,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:39:10" (1/3) ... [2020-07-21 11:39:11,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf7da1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:39:11, skipping insertion in model container [2020-07-21 11:39:11,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:39:11" (2/3) ... [2020-07-21 11:39:11,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf7da1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:39:11, skipping insertion in model container [2020-07-21 11:39:11,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:39:11" (3/3) ... [2020-07-21 11:39:11,616 INFO L109 eAbstractionObserver]: Analyzing ICFG sina1f.c [2020-07-21 11:39:11,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:39:11,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:39:11,671 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:39:11,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:39:11,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:39:11,699 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:39:11,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:39:11,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:39:11,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:39:11,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:39:11,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:39:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-21 11:39:11,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:39:11,729 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:39:11,731 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] [2020-07-21 11:39:11,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:39:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:39:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-21 11:39:11,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:39:11,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050728067] [2020-07-21 11:39:11,747 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 [2020-07-21 11:39:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:39:11,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 11:39:11,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:39:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:39:11,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:39:11,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050728067] [2020-07-21 11:39:11,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:39:11,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 11:39:11,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225709087] [2020-07-21 11:39:11,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 11:39:11,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:39:11,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 11:39:11,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:39:11,939 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-07-21 11:39:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:39:11,972 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-21 11:39:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 11:39:11,975 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-21 11:39:11,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:39:11,986 INFO L225 Difference]: With dead ends: 58 [2020-07-21 11:39:11,987 INFO L226 Difference]: Without dead ends: 29 [2020-07-21 11:39:11,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:39:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-21 11:39:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-21 11:39:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 11:39:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-21 11:39:12,043 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-21 11:39:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:39:12,044 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-21 11:39:12,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 11:39:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-21 11:39:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:39:12,045 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:39:12,046 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] [2020-07-21 11:39:12,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:39:12,260 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:39:12,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:39:12,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-21 11:39:12,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:39:12,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327241407] [2020-07-21 11:39:12,264 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 [2020-07-21 11:39:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:39:12,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 11:39:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:39:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:39:12,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:39:12,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327241407] [2020-07-21 11:39:12,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:39:12,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:39:12,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74463466] [2020-07-21 11:39:12,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:39:12,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:39:12,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:39:12,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:39:12,421 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-07-21 11:39:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:39:12,525 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-21 11:39:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:39:12,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-21 11:39:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:39:12,530 INFO L225 Difference]: With dead ends: 51 [2020-07-21 11:39:12,530 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 11:39:12,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:39:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 11:39:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-07-21 11:39:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 11:39:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-07-21 11:39:12,547 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-07-21 11:39:12,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:39:12,547 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-07-21 11:39:12,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:39:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-07-21 11:39:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 11:39:12,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:39:12,549 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] [2020-07-21 11:39:12,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:39:12,765 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:39:12,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:39:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-07-21 11:39:12,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:39:12,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136817327] [2020-07-21 11:39:12,768 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 [2020-07-21 11:39:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:39:12,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:39:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:39:12,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:39:12,866 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 11:39:12,867 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:39:13,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:39:13,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:39:13 BoogieIcfgContainer [2020-07-21 11:39:13,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:39:13,133 INFO L168 Benchmark]: Toolchain (without parser) took 2438.56 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 102.5 MB in the beginning and 105.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:39:13,134 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 11:39:13,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.32 ms. Allocated memory is still 137.4 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:39:13,137 INFO L168 Benchmark]: Boogie Preprocessor took 161.78 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 91.8 MB in the beginning and 179.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:39:13,138 INFO L168 Benchmark]: RCFGBuilder took 404.49 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 162.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-07-21 11:39:13,139 INFO L168 Benchmark]: TraceAbstraction took 1530.61 ms. Allocated memory is still 202.4 MB. Free memory was 162.9 MB in the beginning and 105.9 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:39:13,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.32 ms. Allocated memory is still 137.4 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.78 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 91.8 MB in the beginning and 179.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.49 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 162.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1530.61 ms. Allocated memory is still 202.4 MB. Free memory was 162.9 MB in the beginning and 105.9 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i