/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 NUM_FUNCTIONS --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/ms3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:15:34,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:15:34,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:15:34,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:15:34,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:15:34,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:15:34,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:15:34,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:15:34,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:15:34,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:15:34,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:15:34,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:15:34,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:15:34,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:15:34,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:15:34,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:15:34,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:15:34,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:15:34,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:15:34,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:15:34,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:15:34,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:15:34,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:15:34,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:15:34,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:15:34,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:15:34,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:15:34,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:15:34,353 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 14:15:34,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:15:34,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:15:34,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:15:34,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:15:34,396 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:15:34,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:15:34,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:15:34,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:15:34,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:15:34,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:15:34,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:15:34,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:15:34,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:15:34,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:15:34,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:15:34,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:15:34,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:15:34,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:15:34,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:15:34,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:15:34,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:15:34,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:15:34,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:15:34,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:15:34,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:15:34,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:15:34,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:15:34,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:15:34,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:15:34,403 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 -> NUM_FUNCTIONS 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 [2020-07-20 14:15:34,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:15:34,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:15:34,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:15:34,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:15:34,759 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:15:34,762 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms3f.c [2020-07-20 14:15:34,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9efcdca/fbb25bcdf9684084aaf974407016a0c2/FLAGde42b6078 [2020-07-20 14:15:35,333 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:15:35,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms3f.c [2020-07-20 14:15:35,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9efcdca/fbb25bcdf9684084aaf974407016a0c2/FLAGde42b6078 [2020-07-20 14:15:35,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9efcdca/fbb25bcdf9684084aaf974407016a0c2 [2020-07-20 14:15:35,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:15:35,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:15:35,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:15:35,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:15:35,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:15:35,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:15:35" (1/1) ... [2020-07-20 14:15:35,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf95c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35, skipping insertion in model container [2020-07-20 14:15:35,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:15:35" (1/1) ... [2020-07-20 14:15:35,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:15:35,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:15:35,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:15:35,945 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:15:35,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:15:35,984 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:15:35,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35 WrapperNode [2020-07-20 14:15:35,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:15:35,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:15:35,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:15:35,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:15:36,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35" (1/1) ... [2020-07-20 14:15:36,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35" (1/1) ... [2020-07-20 14:15:36,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35" (1/1) ... [2020-07-20 14:15:36,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35" (1/1) ... [2020-07-20 14:15:36,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35" (1/1) ... [2020-07-20 14:15:36,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35" (1/1) ... [2020-07-20 14:15:36,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35" (1/1) ... [2020-07-20 14:15:36,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:15:36,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:15:36,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:15:36,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:15:36,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35" (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 14:15:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:15:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:15:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 14:15:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:15:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:15:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:15:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 14:15:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 14:15:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:15:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:15:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 14:15:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:15:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 14:15:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 14:15:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 14:15:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 14:15:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 14:15:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:15:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:15:36,524 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:15:36,524 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 14:15:36,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:15:36 BoogieIcfgContainer [2020-07-20 14:15:36,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:15:36,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:15:36,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:15:36,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:15:36,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:15:35" (1/3) ... [2020-07-20 14:15:36,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4a6974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:15:36, skipping insertion in model container [2020-07-20 14:15:36,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:15:35" (2/3) ... [2020-07-20 14:15:36,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4a6974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:15:36, skipping insertion in model container [2020-07-20 14:15:36,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:15:36" (3/3) ... [2020-07-20 14:15:36,540 INFO L109 eAbstractionObserver]: Analyzing ICFG ms3f.c [2020-07-20 14:15:36,551 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:15:36,564 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:15:36,591 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:15:36,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:15:36,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:15:36,628 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:15:36,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:15:36,629 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:15:36,629 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:15:36,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:15:36,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:15:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-20 14:15:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 14:15:36,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:15:36,658 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 14:15:36,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:15:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:15:36,666 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-07-20 14:15:36,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:15:36,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121705899] [2020-07-20 14:15:36,676 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 [2020-07-20 14:15:36,839 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:15:36,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:15:36,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:15:36,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:15:36,936 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 14:15:36,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:15:36,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121705899] [2020-07-20 14:15:36,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:15:36,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:15:36,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444286838] [2020-07-20 14:15:36,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 14:15:36,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:15:36,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 14:15:36,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:15:36,960 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-07-20 14:15:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:15:37,094 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-07-20 14:15:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 14:15:37,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-20 14:15:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:15:37,105 INFO L225 Difference]: With dead ends: 63 [2020-07-20 14:15:37,106 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 14:15:37,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 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 14:15:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 14:15:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-07-20 14:15:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 14:15:37,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-07-20 14:15:37,157 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-07-20 14:15:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:15:37,157 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-07-20 14:15:37,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 14:15:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-07-20 14:15:37,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 14:15:37,159 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:15:37,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:15:37,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:15:37,374 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:15:37,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:15:37,375 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-07-20 14:15:37,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:15:37,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387816387] [2020-07-20 14:15:37,376 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 [2020-07-20 14:15:37,494 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:15:37,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 14:15:37,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 14:15:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 14:15:37,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 14:15:37,572 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 14:15:37,572 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 14:15:37,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:15:37,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:15:37 BoogieIcfgContainer [2020-07-20 14:15:37,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:15:37,834 INFO L168 Benchmark]: Toolchain (without parser) took 2132.48 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 102.0 MB in the beginning and 116.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:15:37,835 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 14:15:37,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.25 ms. Allocated memory is still 144.2 MB. Free memory was 101.6 MB in the beginning and 91.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:15:37,838 INFO L168 Benchmark]: Boogie Preprocessor took 150.63 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 91.2 MB in the beginning and 180.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:15:37,839 INFO L168 Benchmark]: RCFGBuilder took 392.61 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 163.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-07-20 14:15:37,839 INFO L168 Benchmark]: TraceAbstraction took 1301.57 ms. Allocated memory is still 202.4 MB. Free memory was 163.0 MB in the beginning and 116.7 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:15:37,844 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.25 ms. Allocated memory is still 144.2 MB. Free memory was 101.6 MB in the beginning and 91.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.63 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 91.2 MB in the beginning and 180.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 392.61 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 163.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1301.57 ms. Allocated memory is still 202.4 MB. Free memory was 163.0 MB in the beginning and 116.7 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=5, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] 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=1, sum={2:0}] [L29] COND TRUE i 2*N) VAL [\old(cond)=0, \old(N)=0, N=1] [L13] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L13] __VERIFIER_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 31 SDslu, 19 SDs, 0 SdLazy, 25 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 760 SizeOfPredicates, 2 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...