/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/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:45:47,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:45:47,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:45:47,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:45:47,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:45:47,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:45:47,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:45:47,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:45:47,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:45:47,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:45:47,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:45:47,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:45:47,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:45:47,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:45:47,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:45:47,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:45:47,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:45:47,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:45:47,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:45:47,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:45:47,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:45:47,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:45:47,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:45:47,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:45:47,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:45:47,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:45:47,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:45:47,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:45:47,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:45:47,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:45:47,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:45:47,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:45:47,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:45:47,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:45:47,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:45:47,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:45:47,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:45:47,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:45:47,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:45:47,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:45:47,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:45:47,572 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 11:45:47,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:45:47,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:45:47,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:45:47,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:45:47,612 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:45:47,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:45:47,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:45:47,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:45:47,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:45:47,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:45:47,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:45:47,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:45:47,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:45:47,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:45:47,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:45:47,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:45:47,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:45:47,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:45:47,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:45:47,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:45:47,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:45:47,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:45:47,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:45:47,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:45:47,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:45:47,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:45:47,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:45:47,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:45:47,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:45:47,618 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 11:45:47,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:45:47,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:45:47,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:45:47,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:45:47,928 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:45:47,928 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-07-20 11:45:48,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87072b43d/554dbea3b0354cd19769b15976a9eb59/FLAGd80f0549e [2020-07-20 11:45:48,462 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:45:48,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condgf.c [2020-07-20 11:45:48,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87072b43d/554dbea3b0354cd19769b15976a9eb59/FLAGd80f0549e [2020-07-20 11:45:48,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87072b43d/554dbea3b0354cd19769b15976a9eb59 [2020-07-20 11:45:48,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:45:48,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:45:48,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:45:48,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:45:48,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:45:48,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:45:48" (1/1) ... [2020-07-20 11:45:48,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614eb612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:48, skipping insertion in model container [2020-07-20 11:45:48,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:45:48" (1/1) ... [2020-07-20 11:45:48,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:45:48,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:45:49,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:45:49,045 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:45:49,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:45:49,077 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:45:49,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49 WrapperNode [2020-07-20 11:45:49,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:45:49,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:45:49,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:45:49,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:45:49,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49" (1/1) ... [2020-07-20 11:45:49,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49" (1/1) ... [2020-07-20 11:45:49,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49" (1/1) ... [2020-07-20 11:45:49,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49" (1/1) ... [2020-07-20 11:45:49,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49" (1/1) ... [2020-07-20 11:45:49,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49" (1/1) ... [2020-07-20 11:45:49,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49" (1/1) ... [2020-07-20 11:45:49,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:45:49,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:45:49,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:45:49,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:45:49,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49" (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 11:45:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:45:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:45:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:45:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:45:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:45:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:45:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:45:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:45:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:45:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:45:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:45:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:45:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:45:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:45:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:45:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:45:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:45:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:45:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:45:49,587 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:45:49,588 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 11:45:49,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:45:49 BoogieIcfgContainer [2020-07-20 11:45:49,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:45:49,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:45:49,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:45:49,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:45:49,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:45:48" (1/3) ... [2020-07-20 11:45:49,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6356661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:45:49, skipping insertion in model container [2020-07-20 11:45:49,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:49" (2/3) ... [2020-07-20 11:45:49,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6356661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:45:49, skipping insertion in model container [2020-07-20 11:45:49,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:45:49" (3/3) ... [2020-07-20 11:45:49,601 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-07-20 11:45:49,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:45:49,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:45:49,638 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:45:49,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:45:49,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:45:49,665 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:45:49,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:45:49,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:45:49,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:45:49,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:45:49,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:45:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-20 11:45:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 11:45:49,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:45:49,695 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 11:45:49,695 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:45:49,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:45:49,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1314310818, now seen corresponding path program 1 times [2020-07-20 11:45:49,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:45:49,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359520470] [2020-07-20 11:45:49,712 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 11:45:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:45:49,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:45:49,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:45:49,833 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 11:45:49,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:45:49,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359520470] [2020-07-20 11:45:49,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:45:49,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:45:49,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144218199] [2020-07-20 11:45:49,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:45:49,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:45:49,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:45:49,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:45:49,860 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-07-20 11:45:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:45:49,888 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2020-07-20 11:45:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:45:49,889 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-20 11:45:49,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:45:49,897 INFO L225 Difference]: With dead ends: 66 [2020-07-20 11:45:49,898 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 11:45:49,902 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 11:45:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 11:45:49,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-20 11:45:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-20 11:45:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-07-20 11:45:49,938 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-07-20 11:45:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:45:49,938 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-07-20 11:45:49,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:45:49,939 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-07-20 11:45:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 11:45:49,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:45:49,940 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 11:45:50,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:45:50,150 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:45:50,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:45:50,152 INFO L82 PathProgramCache]: Analyzing trace with hash 34447140, now seen corresponding path program 1 times [2020-07-20 11:45:50,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:45:50,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039013034] [2020-07-20 11:45:50,154 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 11:45:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:45:50,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:45:50,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:45:50,286 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 11:45:50,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:45:50,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039013034] [2020-07-20 11:45:50,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:45:50,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:45:50,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318749253] [2020-07-20 11:45:50,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:45:50,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:45:50,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:45:50,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:45:50,292 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-07-20 11:45:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:45:50,405 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-07-20 11:45:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:45:50,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 11:45:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:45:50,408 INFO L225 Difference]: With dead ends: 62 [2020-07-20 11:45:50,409 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 11:45:50,410 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 11:45:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 11:45:50,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2020-07-20 11:45:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 11:45:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-07-20 11:45:50,423 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2020-07-20 11:45:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:45:50,424 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-07-20 11:45:50,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:45:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-07-20 11:45:50,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 11:45:50,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:45:50,426 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] [2020-07-20 11:45:50,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:45:50,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:45:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:45:50,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1408881596, now seen corresponding path program 1 times [2020-07-20 11:45:50,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:45:50,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070659590] [2020-07-20 11:45:50,644 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 11:45:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:45:50,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 11:45:50,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:45:50,762 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 11:45:50,762 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:45:50,776 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:45:50,777 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:45:50,777 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2020-07-20 11:45:50,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 11:45:50,817 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-07-20 11:45:50,819 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:45:50,830 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:45:50,831 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:45:50,831 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-07-20 11:45:50,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 11:45:50,924 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-07-20 11:45:50,944 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:45:50,959 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:45:50,962 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 11:45:50,963 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:23 [2020-07-20 11:45:51,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 11:45:51,009 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 11:45:51,011 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:45:51,018 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:45:51,019 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:45:51,019 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:30, output treesize:7 [2020-07-20 11:45:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:45:51,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:45:51,685 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~a~0.offset Int)) (< (+ c_main_~i~0 1) (let ((.cse0 (store (select |c_#memory_int| c_main_~a~0.base) (+ (* c_main_~i~0 4) main_~a~0.offset) 2))) (+ (select .cse0 main_~a~0.offset) (select (select (store |c_#memory_int| c_main_~a~0.base .cse0) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|))))) is different from false [2020-07-20 11:45:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-07-20 11:45:51,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070659590] [2020-07-20 11:45:51,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:45:51,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-07-20 11:45:51,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010896268] [2020-07-20 11:45:51,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 11:45:51,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:45:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 11:45:51,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=167, Unknown=1, NotChecked=26, Total=240 [2020-07-20 11:45:51,725 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 16 states. [2020-07-20 11:45:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:45:52,273 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2020-07-20 11:45:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 11:45:52,273 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2020-07-20 11:45:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:45:52,275 INFO L225 Difference]: With dead ends: 73 [2020-07-20 11:45:52,275 INFO L226 Difference]: Without dead ends: 59 [2020-07-20 11:45:52,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=468, Unknown=1, NotChecked=46, Total=650 [2020-07-20 11:45:52,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-20 11:45:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2020-07-20 11:45:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 11:45:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-07-20 11:45:52,288 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 31 [2020-07-20 11:45:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:45:52,288 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-07-20 11:45:52,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 11:45:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-07-20 11:45:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 11:45:52,290 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:45:52,290 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] [2020-07-20 11:45:52,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:45:52,505 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:45:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:45:52,505 INFO L82 PathProgramCache]: Analyzing trace with hash -728823226, now seen corresponding path program 1 times [2020-07-20 11:45:52,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:45:52,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083607186] [2020-07-20 11:45:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:45:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:45:52,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:45:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:45:52,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:45:52,602 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:45:52,603 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:45:52,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:45:52,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:45:52 BoogieIcfgContainer [2020-07-20 11:45:52,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:45:52,858 INFO L168 Benchmark]: Toolchain (without parser) took 4034.34 ms. Allocated memory was 135.8 MB in the beginning and 228.6 MB in the end (delta: 92.8 MB). Free memory was 100.5 MB in the beginning and 92.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:45:52,859 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 11:45:52,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.27 ms. Allocated memory is still 135.8 MB. Free memory was 100.1 MB in the beginning and 89.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:45:52,861 INFO L168 Benchmark]: Boogie Preprocessor took 131.70 ms. Allocated memory was 135.8 MB in the beginning and 200.3 MB in the end (delta: 64.5 MB). Free memory was 89.5 MB in the beginning and 177.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:45:52,862 INFO L168 Benchmark]: RCFGBuilder took 382.55 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 158.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:45:52,863 INFO L168 Benchmark]: TraceAbstraction took 3261.75 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 158.9 MB in the beginning and 92.2 MB in the end (delta: 66.7 MB). Peak memory consumption was 95.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:45:52,867 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.27 ms. Allocated memory is still 135.8 MB. Free memory was 100.1 MB in the beginning and 89.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.70 ms. Allocated memory was 135.8 MB in the beginning and 200.3 MB in the end (delta: 64.5 MB). Free memory was 89.5 MB in the beginning and 177.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.55 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 158.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3261.75 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 158.9 MB in the beginning and 92.2 MB in the end (delta: 66.7 MB). Peak memory consumption was 95.0 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)=7, 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] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2439:0}] [L30] COND TRUE i