/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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:00,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:00,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:00,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:00,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:00,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:00,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:00,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:00,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:00,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:00,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:00,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:00,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:00,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:00,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:00,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:00,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:00,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:00,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:00,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:00,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:00,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:00,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:00,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:00,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:00,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:00,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:00,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:00,281 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 17:44:00,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:00,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:00,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:00,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:00,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:00,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:00,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:00,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:00,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:00,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:00,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:00,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:00,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:00,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:00,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:00,308 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:00,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:00,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:00,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:00,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:00,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:00,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:00,309 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:00,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:00,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:00,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:00,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:00,832 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:00,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-09-04 17:44:00,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fc853513/66dd2416ec5041ebb5b5de35599d02fd/FLAGaa5383651 [2020-09-04 17:44:01,428 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:01,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1f.c [2020-09-04 17:44:01,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fc853513/66dd2416ec5041ebb5b5de35599d02fd/FLAGaa5383651 [2020-09-04 17:44:01,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fc853513/66dd2416ec5041ebb5b5de35599d02fd [2020-09-04 17:44:01,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:01,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:01,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:01,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:01,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:01,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e7c163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01, skipping insertion in model container [2020-09-04 17:44:01,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:01,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:02,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:02,125 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:02,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:02,256 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:02,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02 WrapperNode [2020-09-04 17:44:02,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:02,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:02,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:02,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:02,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02" (1/1) ... [2020-09-04 17:44:02,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02" (1/1) ... [2020-09-04 17:44:02,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02" (1/1) ... [2020-09-04 17:44:02,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02" (1/1) ... [2020-09-04 17:44:02,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02" (1/1) ... [2020-09-04 17:44:02,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02" (1/1) ... [2020-09-04 17:44:02,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02" (1/1) ... [2020-09-04 17:44:02,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:02,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:02,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:02,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:02,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02" (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 17:44:02,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:02,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:02,390 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:02,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:02,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:02,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:02,775 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 17:44:02,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:02 BoogieIcfgContainer [2020-09-04 17:44:02,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:02,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:02,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:02,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:02,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:01" (1/3) ... [2020-09-04 17:44:02,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0ff6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:02, skipping insertion in model container [2020-09-04 17:44:02,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:02" (2/3) ... [2020-09-04 17:44:02,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0ff6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:02, skipping insertion in model container [2020-09-04 17:44:02,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:02" (3/3) ... [2020-09-04 17:44:02,792 INFO L109 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-09-04 17:44:02,806 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:02,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:02,833 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:02,860 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:02,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:02,860 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:02,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:02,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:02,861 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:02,861 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:02,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-04 17:44:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:44:02,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:02,897 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 17:44:02,898 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:02,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1226656927, now seen corresponding path program 1 times [2020-09-04 17:44:02,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:02,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617660002] [2020-09-04 17:44:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:02,983 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:03,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:03,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:03,237 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 17:44:03,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617660002] [2020-09-04 17:44:03,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:03,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:03,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945376818] [2020-09-04 17:44:03,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:03,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:03,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:03,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:03,267 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-04 17:44:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:03,496 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2020-09-04 17:44:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:03,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-04 17:44:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:03,510 INFO L225 Difference]: With dead ends: 131 [2020-09-04 17:44:03,511 INFO L226 Difference]: Without dead ends: 62 [2020-09-04 17:44:03,516 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 17:44:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-04 17:44:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-04 17:44:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 17:44:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-09-04 17:44:03,575 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 37 [2020-09-04 17:44:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:03,576 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-09-04 17:44:03,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-09-04 17:44:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:44:03,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:03,578 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 17:44:03,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:03,579 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:03,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:03,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1534386935, now seen corresponding path program 1 times [2020-09-04 17:44:03,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:03,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621393785] [2020-09-04 17:44:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:03,583 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:03,738 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 17:44:03,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621393785] [2020-09-04 17:44:03,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:03,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:03,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223755693] [2020-09-04 17:44:03,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:03,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:03,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:03,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:03,744 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 5 states. [2020-09-04 17:44:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:04,074 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2020-09-04 17:44:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:04,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-04 17:44:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:04,076 INFO L225 Difference]: With dead ends: 118 [2020-09-04 17:44:04,077 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 17:44:04,079 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 17:44:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 17:44:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-09-04 17:44:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 17:44:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-09-04 17:44:04,095 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 37 [2020-09-04 17:44:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:04,096 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-09-04 17:44:04,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-09-04 17:44:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-04 17:44:04,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:04,099 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 17:44:04,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:04,099 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:04,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1623654441, now seen corresponding path program 1 times [2020-09-04 17:44:04,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:04,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601919130] [2020-09-04 17:44:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:04,134 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:04,205 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:04,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:04,357 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:04,358 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:04,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:04,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:04 BoogieIcfgContainer [2020-09-04 17:44:04,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:04,418 INFO L168 Benchmark]: Toolchain (without parser) took 2607.54 ms. Allocated memory was 146.8 MB in the beginning and 234.9 MB in the end (delta: 88.1 MB). Free memory was 103.6 MB in the beginning and 184.7 MB in the end (delta: -81.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:04,419 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:04,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.71 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 103.4 MB in the beginning and 181.7 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:04,423 INFO L168 Benchmark]: Boogie Preprocessor took 45.47 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:04,424 INFO L168 Benchmark]: RCFGBuilder took 478.51 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 158.2 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:04,425 INFO L168 Benchmark]: TraceAbstraction took 1626.53 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 157.6 MB in the beginning and 184.7 MB in the end (delta: -27.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:04,431 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 146.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.71 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 103.4 MB in the beginning and 181.7 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.47 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.51 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 158.2 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1626.53 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 157.6 MB in the beginning and 184.7 MB in the end (delta: -27.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [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] = 1 [L31] i=0 [L31] COND TRUE i