/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/brs5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:08:36,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:08:36,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:08:36,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:08:36,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:08:36,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:08:36,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:08:36,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:08:36,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:08:36,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:08:36,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:08:36,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:08:36,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:08:36,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:08:36,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:08:36,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:08:36,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:08:36,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:08:36,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:08:36,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:08:36,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:08:36,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:08:36,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:08:36,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:08:36,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:08:36,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:08:36,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:08:36,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:08:36,120 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 23:08:36,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:08:36,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:08:36,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:08:36,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:08:36,150 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:08:36,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:08:36,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:08:36,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:08:36,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:08:36,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:08:36,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:08:36,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:08:36,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:08:36,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:08:36,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:08:36,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:08:36,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:08:36,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:08:36,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:08:36,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:08:36,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:08:36,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:08:36,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:08:36,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:08:36,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:08:36,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:08:36,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:08:36,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:08:36,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:08:36,155 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 23:08:36,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:08:36,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:08:36,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:08:36,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:08:36,475 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:08:36,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs5f.c [2020-07-21 23:08:36,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2810775c/e599a59936ba491e892853f25a123919/FLAG04b6dc317 [2020-07-21 23:08:36,971 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:08:36,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs5f.c [2020-07-21 23:08:36,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2810775c/e599a59936ba491e892853f25a123919/FLAG04b6dc317 [2020-07-21 23:08:37,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2810775c/e599a59936ba491e892853f25a123919 [2020-07-21 23:08:37,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:08:37,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:08:37,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:08:37,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:08:37,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:08:37,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:37" (1/1) ... [2020-07-21 23:08:37,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413700ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37, skipping insertion in model container [2020-07-21 23:08:37,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:08:37" (1/1) ... [2020-07-21 23:08:37,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:08:37,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:08:37,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:08:37,575 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:08:37,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:08:37,613 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:08:37,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37 WrapperNode [2020-07-21 23:08:37,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:08:37,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:08:37,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:08:37,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:08:37,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37" (1/1) ... [2020-07-21 23:08:37,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37" (1/1) ... [2020-07-21 23:08:37,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37" (1/1) ... [2020-07-21 23:08:37,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37" (1/1) ... [2020-07-21 23:08:37,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37" (1/1) ... [2020-07-21 23:08:37,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37" (1/1) ... [2020-07-21 23:08:37,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37" (1/1) ... [2020-07-21 23:08:37,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:08:37,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:08:37,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:08:37,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:08:37,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37" (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 23:08:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:08:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:08:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:08:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 23:08:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:08:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:08:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:08:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:08:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:08:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:08:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 23:08:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:08:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 23:08:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 23:08:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 23:08:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 23:08:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 23:08:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:08:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:08:38,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:08:38,074 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 23:08:38,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:08:38 BoogieIcfgContainer [2020-07-21 23:08:38,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:08:38,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:08:38,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:08:38,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:08:38,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:08:37" (1/3) ... [2020-07-21 23:08:38,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e796664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:08:38, skipping insertion in model container [2020-07-21 23:08:38,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:08:37" (2/3) ... [2020-07-21 23:08:38,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e796664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:08:38, skipping insertion in model container [2020-07-21 23:08:38,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:08:38" (3/3) ... [2020-07-21 23:08:38,086 INFO L109 eAbstractionObserver]: Analyzing ICFG brs5f.c [2020-07-21 23:08:38,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:08:38,106 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:08:38,132 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:08:38,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:08:38,190 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:08:38,190 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:08:38,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:08:38,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:08:38,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:08:38,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:08:38,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:08:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-21 23:08:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 23:08:38,241 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:08:38,242 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] [2020-07-21 23:08:38,243 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:08:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:08:38,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-07-21 23:08:38,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:08:38,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614727271] [2020-07-21 23:08:38,263 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 23:08:38,353 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:08:38,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:08:38,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 23:08:38,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:08:38,389 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 23:08:38,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:08:38,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614727271] [2020-07-21 23:08:38,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:08:38,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 23:08:38,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702039761] [2020-07-21 23:08:38,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 23:08:38,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:08:38,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 23:08:38,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:08:38,419 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-07-21 23:08:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:08:38,441 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-21 23:08:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 23:08:38,443 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-07-21 23:08:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:08:38,452 INFO L225 Difference]: With dead ends: 56 [2020-07-21 23:08:38,452 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 23:08:38,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 23:08:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 23:08:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-21 23:08:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-21 23:08:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-21 23:08:38,506 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-07-21 23:08:38,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:08:38,506 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-21 23:08:38,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 23:08:38,507 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-21 23:08:38,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 23:08:38,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:08:38,510 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] [2020-07-21 23:08:38,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:08:38,724 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:08:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:08:38,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-07-21 23:08:38,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:08:38,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572655401] [2020-07-21 23:08:38,727 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 23:08:38,785 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:08:38,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:08:38,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:08:38,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:08:38,851 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 23:08:38,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:08:38,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572655401] [2020-07-21 23:08:38,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:08:38,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:08:38,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562917932] [2020-07-21 23:08:38,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:08:38,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:08:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:08:38,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:08:38,857 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-07-21 23:08:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:08:38,940 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-07-21 23:08:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:08:38,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-21 23:08:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:08:38,943 INFO L225 Difference]: With dead ends: 42 [2020-07-21 23:08:38,943 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 23:08:38,944 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 [2020-07-21 23:08:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 23:08:38,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-07-21 23:08:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-21 23:08:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-07-21 23:08:38,952 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 21 [2020-07-21 23:08:38,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:08:38,953 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-07-21 23:08:38,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:08:38,954 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-21 23:08:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 23:08:38,955 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:08:38,955 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] [2020-07-21 23:08:39,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:08:39,172 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:08:39,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:08:39,173 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-07-21 23:08:39,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:08:39,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638865372] [2020-07-21 23:08:39,175 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 23:08:39,237 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:08:39,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 23:08:39,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 23:08:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 23:08:39,255 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 23:08:39,281 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 23:08:39,282 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 23:08:39,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:08:39,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:08:39 BoogieIcfgContainer [2020-07-21 23:08:39,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:08:39,539 INFO L168 Benchmark]: Toolchain (without parser) took 2201.52 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 104.1 MB in the beginning and 106.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-07-21 23:08:39,540 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 23:08:39,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.19 ms. Allocated memory is still 139.5 MB. Free memory was 103.9 MB in the beginning and 93.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-21 23:08:39,543 INFO L168 Benchmark]: Boogie Preprocessor took 110.68 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 180.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-21 23:08:39,544 INFO L168 Benchmark]: RCFGBuilder took 352.61 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 163.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-07-21 23:08:39,544 INFO L168 Benchmark]: TraceAbstraction took 1457.16 ms. Allocated memory is still 202.9 MB. Free memory was 163.1 MB in the beginning and 106.3 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-07-21 23:08:39,549 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.19 ms. Allocated memory is still 139.5 MB. Free memory was 103.9 MB in the beginning and 93.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.68 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 180.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.61 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 163.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1457.16 ms. Allocated memory is still 202.9 MB. Free memory was 163.1 MB in the beginning and 106.3 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=7, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] 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