/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/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:43:01,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:43:01,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:43:01,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:43:01,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:43:01,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:43:01,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:43:01,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:43:01,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:43:01,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:43:01,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:43:01,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:43:01,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:43:01,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:43:01,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:43:01,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:43:01,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:43:01,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:43:01,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:43:01,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:43:01,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:43:01,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:43:01,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:43:01,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:43:01,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:43:01,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:43:01,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:43:01,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:43:01,859 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 01:43:01,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:43:01,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:43:01,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:43:01,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:43:01,877 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:43:01,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:43:01,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:43:01,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:43:01,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:43:01,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:43:01,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:43:01,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:43:01,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:43:01,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:43:01,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:43:01,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:43:01,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:43:01,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:43:01,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:43:01,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:43:01,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:43:01,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:43:01,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:43:01,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:43:01,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:43:01,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:43:01,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:43:01,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:43:01,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:43:01,883 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 01:43:02,209 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:43:02,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:43:02,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:43:02,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:43:02,231 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:43:02,232 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-07-21 01:43:02,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d004aeb/8f1055acd5c14c57a27679857abe145f/FLAGf0ff696c0 [2020-07-21 01:43:02,835 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:43:02,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2020-07-21 01:43:02,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d004aeb/8f1055acd5c14c57a27679857abe145f/FLAGf0ff696c0 [2020-07-21 01:43:03,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d004aeb/8f1055acd5c14c57a27679857abe145f [2020-07-21 01:43:03,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:43:03,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:43:03,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:43:03,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:43:03,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:43:03,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:43:03" (1/1) ... [2020-07-21 01:43:03,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd54479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03, skipping insertion in model container [2020-07-21 01:43:03,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:43:03" (1/1) ... [2020-07-21 01:43:03,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:43:03,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:43:03,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:43:03,550 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:43:03,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:43:03,722 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:43:03,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03 WrapperNode [2020-07-21 01:43:03,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:43:03,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:43:03,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:43:03,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:43:03,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03" (1/1) ... [2020-07-21 01:43:03,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03" (1/1) ... [2020-07-21 01:43:03,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03" (1/1) ... [2020-07-21 01:43:03,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03" (1/1) ... [2020-07-21 01:43:03,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03" (1/1) ... [2020-07-21 01:43:03,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03" (1/1) ... [2020-07-21 01:43:03,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03" (1/1) ... [2020-07-21 01:43:03,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:43:03,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:43:03,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:43:03,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:43:03,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03" (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 01:43:03,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:43:03,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:43:03,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 01:43:03,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:43:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:43:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:43:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 01:43:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-21 01:43:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:43:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:43:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:43:03,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:43:03,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:43:03,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:43:03,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:43:04,337 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:43:04,338 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 01:43:04,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:43:04 BoogieIcfgContainer [2020-07-21 01:43:04,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:43:04,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:43:04,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:43:04,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:43:04,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:43:03" (1/3) ... [2020-07-21 01:43:04,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8932d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:43:04, skipping insertion in model container [2020-07-21 01:43:04,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:43:03" (2/3) ... [2020-07-21 01:43:04,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8932d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:43:04, skipping insertion in model container [2020-07-21 01:43:04,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:43:04" (3/3) ... [2020-07-21 01:43:04,356 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-07-21 01:43:04,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:43:04,380 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:43:04,397 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:43:04,433 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:43:04,433 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:43:04,433 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:43:04,433 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:43:04,434 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:43:04,434 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:43:04,434 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:43:04,434 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:43:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-21 01:43:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 01:43:04,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:43:04,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:43:04,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:43:04,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:43:04,474 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2020-07-21 01:43:04,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:43:04,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305828443] [2020-07-21 01:43:04,487 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 01:43:04,615 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:43:04,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:43:04,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:43:04,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:43:04,657 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 01:43:04,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:43:04,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305828443] [2020-07-21 01:43:04,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:43:04,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:43:04,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54671380] [2020-07-21 01:43:04,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:43:04,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:43:04,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:43:04,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:43:04,688 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-07-21 01:43:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:43:04,725 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2020-07-21 01:43:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:43:04,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-07-21 01:43:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:43:04,738 INFO L225 Difference]: With dead ends: 52 [2020-07-21 01:43:04,739 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 01:43:04,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 01:43:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 01:43:04,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 01:43:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 01:43:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-21 01:43:04,802 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-07-21 01:43:04,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:43:04,803 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-21 01:43:04,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:43:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-21 01:43:04,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 01:43:04,804 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:43:04,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:43:05,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:43:05,022 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:43:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:43:05,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2020-07-21 01:43:05,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:43:05,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544621775] [2020-07-21 01:43:05,025 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 01:43:05,107 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:43:05,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:43:05,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:43:05,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:43:05,212 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 01:43:05,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:43:05,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544621775] [2020-07-21 01:43:05,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:43:05,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:43:05,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795753529] [2020-07-21 01:43:05,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:43:05,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:43:05,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:43:05,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:43:05,219 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2020-07-21 01:43:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:43:05,393 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-07-21 01:43:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:43:05,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-21 01:43:05,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:43:05,399 INFO L225 Difference]: With dead ends: 57 [2020-07-21 01:43:05,399 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 01:43:05,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:43:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 01:43:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-07-21 01:43:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-21 01:43:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-07-21 01:43:05,418 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2020-07-21 01:43:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:43:05,419 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-07-21 01:43:05,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:43:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-21 01:43:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 01:43:05,420 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:43:05,420 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] [2020-07-21 01:43:05,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:43:05,634 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:43:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:43:05,637 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2020-07-21 01:43:05,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:43:05,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197515060] [2020-07-21 01:43:05,638 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 01:43:05,758 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:43:05,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 01:43:05,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:43:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 01:43:05,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:43:05,825 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 01:43:05,826 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:43:06,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:43:06,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:43:06 BoogieIcfgContainer [2020-07-21 01:43:06,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:43:06,090 INFO L168 Benchmark]: Toolchain (without parser) took 2903.55 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 102.1 MB in the beginning and 99.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:43:06,091 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 01:43:06,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.00 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 101.7 MB in the beginning and 182.5 MB in the end (delta: -80.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:43:06,094 INFO L168 Benchmark]: Boogie Preprocessor took 56.70 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:43:06,095 INFO L168 Benchmark]: RCFGBuilder took 562.79 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 162.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:43:06,096 INFO L168 Benchmark]: TraceAbstraction took 1740.53 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 99.3 MB in the end (delta: 63.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:43:06,101 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 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 534.00 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 101.7 MB in the beginning and 182.5 MB in the end (delta: -80.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.70 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 562.79 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 162.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1740.53 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 99.3 MB in the end (delta: 63.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 VAL [A={1327:0}, B={1326:0}, C={1325:0}, i=0, M=1] [L18] COND TRUE i