/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:09:03,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:09:03,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:09:03,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:09:03,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:09:03,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:09:03,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:09:03,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:09:03,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:09:03,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:09:03,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:09:03,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:09:03,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:09:03,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:09:03,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:09:03,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:09:03,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:09:03,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:09:03,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:09:03,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:09:03,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:09:03,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:09:03,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:09:03,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:09:03,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:09:03,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:09:03,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:09:03,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:09:03,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 23:09:03,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:09:03,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:09:03,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:09:03,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:09:03,470 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:09:03,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:09:03,471 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:09:03,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:09:03,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:09:03,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:09:03,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:09:03,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:09:03,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:09:03,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:09:03,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:09:03,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:09:03,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:09:03,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:09:03,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:09:03,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:09:03,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:09:03,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:09:03,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:09:03,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:09:03,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:09:03,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:09:03,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:09:03,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:09:03,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:09:03,475 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 23:09:03,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:09:03,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:09:03,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:09:03,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:09:03,776 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:09:03,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn5f.c [2020-07-21 23:09:03,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b92f0cc3/55de91f4cbb04113b615ce7cd2930890/FLAG685bb366c [2020-07-21 23:09:04,287 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:09:04,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn5f.c [2020-07-21 23:09:04,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b92f0cc3/55de91f4cbb04113b615ce7cd2930890/FLAG685bb366c [2020-07-21 23:09:04,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b92f0cc3/55de91f4cbb04113b615ce7cd2930890 [2020-07-21 23:09:04,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:09:04,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:09:04,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:09:04,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:09:04,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:09:04,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:09:04" (1/1) ... [2020-07-21 23:09:04,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ebf575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04, skipping insertion in model container [2020-07-21 23:09:04,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:09:04" (1/1) ... [2020-07-21 23:09:04,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:09:04,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:09:04,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:09:04,960 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:09:04,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:09:04,997 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:09:04,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04 WrapperNode [2020-07-21 23:09:04,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:09:04,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:09:04,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:09:04,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:09:05,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04" (1/1) ... [2020-07-21 23:09:05,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04" (1/1) ... [2020-07-21 23:09:05,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04" (1/1) ... [2020-07-21 23:09:05,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04" (1/1) ... [2020-07-21 23:09:05,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04" (1/1) ... [2020-07-21 23:09:05,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04" (1/1) ... [2020-07-21 23:09:05,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04" (1/1) ... [2020-07-21 23:09:05,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:09:05,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:09:05,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:09:05,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:09:05,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:09:05,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:09:05,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:09:05,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:09:05,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 23:09:05,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:09:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:09:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:09:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:09:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:09:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:09:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 23:09:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:09:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 23:09:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 23:09:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 23:09:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:09:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:09:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 23:09:05,555 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:09:05,556 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-21 23:09:05,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:09:05 BoogieIcfgContainer [2020-07-21 23:09:05,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:09:05,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:09:05,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:09:05,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:09:05,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:09:04" (1/3) ... [2020-07-21 23:09:05,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744fa249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:09:05, skipping insertion in model container [2020-07-21 23:09:05,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:09:04" (2/3) ... [2020-07-21 23:09:05,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744fa249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:09:05, skipping insertion in model container [2020-07-21 23:09:05,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:09:05" (3/3) ... [2020-07-21 23:09:05,569 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn5f.c [2020-07-21 23:09:05,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:09:05,590 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:09:05,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:09:05,629 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:09:05,629 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:09:05,630 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:09:05,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:09:05,630 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:09:05,630 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:09:05,630 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:09:05,630 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:09:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-21 23:09:05,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 23:09:05,662 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:09:05,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:09:05,664 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:09:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:09:05,670 INFO L82 PathProgramCache]: Analyzing trace with hash -294712258, now seen corresponding path program 1 times [2020-07-21 23:09:05,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:09:05,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17234097] [2020-07-21 23:09:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:09:05,778 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:09:05,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:09:05,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 23:09:05,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:09:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:09:05,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:09:05,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17234097] [2020-07-21 23:09:05,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:09:05,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 23:09:05,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978929446] [2020-07-21 23:09:05,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 23:09:05,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:09:05,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 23:09:05,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:09:05,838 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2020-07-21 23:09:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:09:05,867 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-07-21 23:09:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 23:09:05,868 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-21 23:09:05,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:09:05,877 INFO L225 Difference]: With dead ends: 62 [2020-07-21 23:09:05,877 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 23:09:05,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:09:05,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 23:09:05,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-21 23:09:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 23:09:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-07-21 23:09:05,922 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-07-21 23:09:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:09:05,923 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-07-21 23:09:05,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 23:09:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-21 23:09:05,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 23:09:05,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:09:05,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:09:06,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:09:06,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:09:06,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:09:06,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2054124171, now seen corresponding path program 1 times [2020-07-21 23:09:06,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:09:06,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566436632] [2020-07-21 23:09:06,144 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:09:06,242 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:09:06,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:09:06,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:09:06,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:09:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:09:06,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:09:06,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566436632] [2020-07-21 23:09:06,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:09:06,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:09:06,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634219759] [2020-07-21 23:09:06,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:09:06,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:09:06,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:09:06,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:09:06,294 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-07-21 23:09:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:09:06,400 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-07-21 23:09:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:09:06,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-21 23:09:06,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:09:06,404 INFO L225 Difference]: With dead ends: 56 [2020-07-21 23:09:06,404 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 23:09:06,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:09:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 23:09:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-07-21 23:09:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 23:09:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-07-21 23:09:06,420 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2020-07-21 23:09:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:09:06,420 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-07-21 23:09:06,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:09:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-07-21 23:09:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 23:09:06,421 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:09:06,422 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] [2020-07-21 23:09:06,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:09:06,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:09:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:09:06,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1477618916, now seen corresponding path program 1 times [2020-07-21 23:09:06,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:09:06,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975767448] [2020-07-21 23:09:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:09:06,698 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:09:06,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 23:09:06,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 23:09:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 23:09:06,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 23:09:06,743 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 23:09:06,744 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 23:09:06,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:09:07,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:09:07 BoogieIcfgContainer [2020-07-21 23:09:07,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:09:07,007 INFO L168 Benchmark]: Toolchain (without parser) took 2302.91 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 103.3 MB in the beginning and 101.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-07-21 23:09:07,008 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 23:09:07,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.70 ms. Allocated memory is still 145.8 MB. Free memory was 102.9 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. [2020-07-21 23:09:07,010 INFO L168 Benchmark]: Boogie Preprocessor took 125.76 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.5 MB in the beginning and 180.0 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:09:07,011 INFO L168 Benchmark]: RCFGBuilder took 436.14 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 162.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-07-21 23:09:07,012 INFO L168 Benchmark]: TraceAbstraction took 1441.60 ms. Allocated memory is still 202.9 MB. Free memory was 162.2 MB in the beginning and 101.3 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:09:07,016 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.70 ms. Allocated memory is still 145.8 MB. Free memory was 102.9 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 125.76 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.5 MB in the beginning and 180.0 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.14 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 162.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1441.60 ms. Allocated memory is still 202.9 MB. Free memory was 162.2 MB in the beginning and 101.3 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 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)=2, 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 VAL [\old(N)=0, a={-2:0}, b={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1] [L29] COND TRUE i