/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:45:57,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:45:57,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:45:57,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:45:57,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:45:57,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:45:57,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:45:57,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:45:57,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:45:57,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:45:57,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:45:57,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:45:57,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:45:57,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:45:57,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:45:57,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:45:57,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:45:57,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:45:57,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:45:57,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:45:57,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:45:57,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:45:57,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:45:57,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:45:57,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 01:45:57,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 01:45:57,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 01:45:57,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 01:45:57,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 01:45:57,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 01:45:57,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:45:57,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:45:57,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:45:57,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:45:57,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:45:57,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:45:57,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:45:57,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:45:57,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:45:57,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:45:57,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:45:57,353 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 01:45:57,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:45:57,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:45:57,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:45:57,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:45:57,376 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:45:57,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:45:57,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:45:57,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:45:57,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:45:57,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:45:57,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:45:57,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:45:57,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:45:57,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:45:57,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:45:57,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:45:57,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:45:57,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:45:57,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:45:57,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:45:57,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:45:57,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:45:57,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:45:57,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:45:57,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:45:57,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:45:57,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:45:57,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:45:57,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:45:57,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:45:57,697 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:45:57,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:45:57,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:45:57,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:45:57,717 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:45:57,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-07-20 01:45:57,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb2a0f4a/c9c47742f2b3499dbb90eca773f618b9/FLAG3abaa0b12 [2020-07-20 01:45:58,271 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:45:58,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs3f.c [2020-07-20 01:45:58,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb2a0f4a/c9c47742f2b3499dbb90eca773f618b9/FLAG3abaa0b12 [2020-07-20 01:45:58,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb2a0f4a/c9c47742f2b3499dbb90eca773f618b9 [2020-07-20 01:45:58,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:45:58,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:45:58,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:45:58,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:45:58,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:45:58,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:45:58" (1/1) ... [2020-07-20 01:45:58,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683d3f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58, skipping insertion in model container [2020-07-20 01:45:58,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:45:58" (1/1) ... [2020-07-20 01:45:58,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:45:58,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:45:58,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:45:58,919 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:45:58,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:45:58,955 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:45:58,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58 WrapperNode [2020-07-20 01:45:58,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:45:58,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:45:58,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:45:58,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:45:59,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58" (1/1) ... [2020-07-20 01:45:59,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58" (1/1) ... [2020-07-20 01:45:59,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58" (1/1) ... [2020-07-20 01:45:59,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58" (1/1) ... [2020-07-20 01:45:59,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58" (1/1) ... [2020-07-20 01:45:59,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58" (1/1) ... [2020-07-20 01:45:59,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58" (1/1) ... [2020-07-20 01:45:59,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:45:59,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:45:59,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:45:59,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:45:59,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58" (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 01:45:59,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:45:59,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:45:59,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:45:59,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:45:59,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:45:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:45:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:45:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:45:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:45:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:45:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 01:45:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:45:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:45:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:45:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:45:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:45:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:45:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:45:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:45:59,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:45:59,521 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 01:45:59,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:45:59 BoogieIcfgContainer [2020-07-20 01:45:59,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:45:59,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:45:59,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:45:59,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:45:59,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:45:58" (1/3) ... [2020-07-20 01:45:59,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2936c68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:45:59, skipping insertion in model container [2020-07-20 01:45:59,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:45:58" (2/3) ... [2020-07-20 01:45:59,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2936c68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:45:59, skipping insertion in model container [2020-07-20 01:45:59,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:45:59" (3/3) ... [2020-07-20 01:45:59,535 INFO L109 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-07-20 01:45:59,546 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:45:59,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:45:59,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:45:59,590 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:45:59,590 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:45:59,590 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:45:59,590 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:45:59,590 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:45:59,591 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:45:59,591 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:45:59,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:45:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-20 01:45:59,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 01:45:59,613 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:45:59,614 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] [2020-07-20 01:45:59,615 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:45:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:45:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-07-20 01:45:59,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:45:59,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075842188] [2020-07-20 01:45:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1b051 [2020-07-20 01:45:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:45:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:45:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:45:59,822 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 01:45:59,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075842188] [2020-07-20 01:45:59,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:45:59,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:45:59,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537315255] [2020-07-20 01:45:59,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:45:59,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:45:59,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:45:59,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:45:59,846 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-07-20 01:45:59,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:45:59,971 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-20 01:45:59,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:45:59,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 01:45:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:45:59,984 INFO L225 Difference]: With dead ends: 56 [2020-07-20 01:45:59,984 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 01:45:59,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:46:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 01:46:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-20 01:46:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-20 01:46:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-20 01:46:00,032 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-07-20 01:46:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:46:00,032 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-20 01:46:00,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:46:00,033 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-20 01:46:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 01:46:00,034 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:00,034 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] [2020-07-20 01:46:00,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:46:00,035 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:00,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:00,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-07-20 01:46:00,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:00,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46987928] [2020-07-20 01:46:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1b051 [2020-07-20 01:46:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:00,160 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 01:46:00,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46987928] [2020-07-20 01:46:00,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:46:00,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:46:00,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749864470] [2020-07-20 01:46:00,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:46:00,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:46:00,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:46:00,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:46:00,165 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-07-20 01:46:00,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:46:00,307 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-07-20 01:46:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:46:00,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-20 01:46:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:46:00,309 INFO L225 Difference]: With dead ends: 45 [2020-07-20 01:46:00,309 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 01:46:00,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:46:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 01:46:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-20 01:46:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 01:46:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 01:46:00,319 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-07-20 01:46:00,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:46:00,320 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 01:46:00,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:46:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 01:46:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 01:46:00,321 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:00,321 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] [2020-07-20 01:46:00,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:46:00,322 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:00,322 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-07-20 01:46:00,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:00,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224856165] [2020-07-20 01:46:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1b051 [2020-07-20 01:46:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:46:00,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224856165] [2020-07-20 01:46:00,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:46:00,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 01:46:00,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414762622] [2020-07-20 01:46:00,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:46:00,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:46:00,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:46:00,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:46:00,485 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-07-20 01:46:00,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:46:00,705 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-07-20 01:46:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 01:46:00,706 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-07-20 01:46:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:46:00,707 INFO L225 Difference]: With dead ends: 39 [2020-07-20 01:46:00,707 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 01:46:00,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:46:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 01:46:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-20 01:46:00,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 01:46:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-20 01:46:00,716 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-07-20 01:46:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:46:00,717 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-20 01:46:00,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:46:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-20 01:46:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 01:46:00,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:00,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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 01:46:00,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 01:46:00,719 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:00,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:00,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1239476407, now seen corresponding path program 1 times [2020-07-20 01:46:00,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:00,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24171515] [2020-07-20 01:46:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1b051 [2020-07-20 01:46:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:46:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:46:00,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24171515] [2020-07-20 01:46:00,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140827850] [2020-07-20 01:46:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6873b15 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:46:00,942 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6873b15 issued 4 check-sat command(s) [2020-07-20 01:46:00,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:46:00,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:46:00,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:46:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:46:01,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:46:01,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-07-20 01:46:01,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336842085] [2020-07-20 01:46:01,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 01:46:01,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:46:01,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 01:46:01,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-20 01:46:01,022 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2020-07-20 01:46:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:46:01,203 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-07-20 01:46:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 01:46:01,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-07-20 01:46:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:46:01,205 INFO L225 Difference]: With dead ends: 55 [2020-07-20 01:46:01,205 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 01:46:01,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-20 01:46:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 01:46:01,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-07-20 01:46:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 01:46:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-20 01:46:01,213 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 30 [2020-07-20 01:46:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:46:01,213 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-20 01:46:01,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 01:46:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-20 01:46:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 01:46:01,215 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:46:01,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 01:46:01,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:46:01,430 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:46:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:46:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-07-20 01:46:01,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:46:01,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250335408] [2020-07-20 01:46:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b1b051 [2020-07-20 01:46:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:46:01,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:46:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:46:01,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:46:01,597 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:46:01,597 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:46:01,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 01:46:01,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:46:01 BoogieIcfgContainer [2020-07-20 01:46:01,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:46:01,649 INFO L168 Benchmark]: Toolchain (without parser) took 2947.35 ms. Allocated memory was 138.9 MB in the beginning and 236.5 MB in the end (delta: 97.5 MB). Free memory was 103.3 MB in the beginning and 128.9 MB in the end (delta: -25.6 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:01,650 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 01:46:01,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.52 ms. Allocated memory is still 138.9 MB. Free memory was 102.8 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:01,652 INFO L168 Benchmark]: Boogie Preprocessor took 131.67 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.5 MB in the beginning and 179.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:01,653 INFO L168 Benchmark]: RCFGBuilder took 437.35 ms. Allocated memory is still 202.9 MB. Free memory was 179.9 MB in the beginning and 163.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:01,654 INFO L168 Benchmark]: TraceAbstraction took 2118.92 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 162.8 MB in the beginning and 128.9 MB in the end (delta: 33.9 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:46:01,658 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.52 ms. Allocated memory is still 138.9 MB. Free memory was 102.8 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.67 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.5 MB in the beginning and 179.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.35 ms. Allocated memory is still 202.9 MB. Free memory was 179.9 MB in the beginning and 163.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2118.92 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 162.8 MB in the beginning and 128.9 MB in the end (delta: 33.9 MB). Peak memory consumption was 67.4 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)=32, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=2, sum={2:0}] [L29] COND TRUE i