/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:02,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:02,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:02,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:02,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:02,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:02,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:02,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:02,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:02,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:02,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:02,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:02,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:02,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:02,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:02,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:02,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:02,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:02,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:02,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:02,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:02,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:02,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:02,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:02,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:02,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:02,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:02,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:02,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:44:02,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:02,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:02,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:02,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:02,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:02,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:02,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:02,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:02,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:02,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:02,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:02,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:02,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:02,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:02,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:02,233 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:02,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:02,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:02,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:02,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:02,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:02,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:02,234 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:02,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:02,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:02,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:02,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:02,691 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:02,692 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-09-04 17:44:02,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6ff8e5b2/88a1fcfa50224194ae32442b4b1fa29a/FLAG9732559b8 [2020-09-04 17:44:03,361 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:03,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1of.c [2020-09-04 17:44:03,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6ff8e5b2/88a1fcfa50224194ae32442b4b1fa29a/FLAG9732559b8 [2020-09-04 17:44:03,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6ff8e5b2/88a1fcfa50224194ae32442b4b1fa29a [2020-09-04 17:44:03,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:03,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:03,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:03,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:03,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:03,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:03" (1/1) ... [2020-09-04 17:44:03,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:03, skipping insertion in model container [2020-09-04 17:44:03,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:03" (1/1) ... [2020-09-04 17:44:03,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:03,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:04,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:04,039 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:04,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:04,085 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:04,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04 WrapperNode [2020-09-04 17:44:04,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:04,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:04,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:04,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:04,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04" (1/1) ... [2020-09-04 17:44:04,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04" (1/1) ... [2020-09-04 17:44:04,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04" (1/1) ... [2020-09-04 17:44:04,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04" (1/1) ... [2020-09-04 17:44:04,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04" (1/1) ... [2020-09-04 17:44:04,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04" (1/1) ... [2020-09-04 17:44:04,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04" (1/1) ... [2020-09-04 17:44:04,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:04,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:04,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:04,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:04,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:44:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:04,656 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:04,657 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 17:44:04,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:04 BoogieIcfgContainer [2020-09-04 17:44:04,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:04,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:04,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:04,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:04,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:03" (1/3) ... [2020-09-04 17:44:04,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2992c003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:04, skipping insertion in model container [2020-09-04 17:44:04,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:04" (2/3) ... [2020-09-04 17:44:04,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2992c003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:04, skipping insertion in model container [2020-09-04 17:44:04,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:04" (3/3) ... [2020-09-04 17:44:04,673 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-09-04 17:44:04,685 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:04,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:04,729 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:04,760 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:04,760 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:04,760 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:04,760 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:04,761 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:04,761 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:04,761 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:04,761 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-04 17:44:04,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:44:04,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:04,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:04,795 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:04,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:04,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1485233439, now seen corresponding path program 1 times [2020-09-04 17:44:04,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:04,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336514263] [2020-09-04 17:44:04,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:04,882 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:05,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:44:05,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336514263] [2020-09-04 17:44:05,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:05,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:05,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122493293] [2020-09-04 17:44:05,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:05,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:05,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:05,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:05,175 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-04 17:44:05,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:05,444 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2020-09-04 17:44:05,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:05,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-04 17:44:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:05,459 INFO L225 Difference]: With dead ends: 131 [2020-09-04 17:44:05,459 INFO L226 Difference]: Without dead ends: 62 [2020-09-04 17:44:05,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-04 17:44:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-04 17:44:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 17:44:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-09-04 17:44:05,527 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 37 [2020-09-04 17:44:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:05,528 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-09-04 17:44:05,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-09-04 17:44:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:44:05,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:05,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:05,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:05,531 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:05,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:05,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1275810423, now seen corresponding path program 1 times [2020-09-04 17:44:05,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:05,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998932024] [2020-09-04 17:44:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:05,535 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:05,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:05,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:44:05,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998932024] [2020-09-04 17:44:05,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:05,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:05,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854667919] [2020-09-04 17:44:05,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:05,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:05,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:05,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:05,675 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 5 states. [2020-09-04 17:44:05,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:05,976 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2020-09-04 17:44:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:05,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-04 17:44:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:05,980 INFO L225 Difference]: With dead ends: 118 [2020-09-04 17:44:05,981 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 17:44:05,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:44:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 17:44:06,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-09-04 17:44:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 17:44:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-09-04 17:44:06,021 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 37 [2020-09-04 17:44:06,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:06,024 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-09-04 17:44:06,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-09-04 17:44:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-04 17:44:06,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:06,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:06,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:06,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:06,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:06,031 INFO L82 PathProgramCache]: Analyzing trace with hash 499886001, now seen corresponding path program 1 times [2020-09-04 17:44:06,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:06,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855835719] [2020-09-04 17:44:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:06,084 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:06,209 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:06,254 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:06,298 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:06,298 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:06,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:06,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:06 BoogieIcfgContainer [2020-09-04 17:44:06,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:06,355 INFO L168 Benchmark]: Toolchain (without parser) took 2609.27 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 101.8 MB in the beginning and 186.4 MB in the end (delta: -84.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:06,356 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:06,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.77 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 91.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:06,358 INFO L168 Benchmark]: Boogie Preprocessor took 140.58 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.0 MB in the beginning and 180.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:06,359 INFO L168 Benchmark]: RCFGBuilder took 435.75 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 159.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:06,361 INFO L168 Benchmark]: TraceAbstraction took 1679.45 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 159.2 MB in the beginning and 186.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:06,365 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.77 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 91.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.58 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.0 MB in the beginning and 180.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.75 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 159.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1679.45 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 159.2 MB in the beginning and 186.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 4.8 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; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i