/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/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:29,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:29,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:29,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:29,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:29,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:29,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:29,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:29,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:29,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:29,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:29,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:29,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:29,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:29,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:29,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:29,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:29,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:29,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:29,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:29,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:29,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:29,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:29,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:29,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:43:29,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:29,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:29,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:29,232 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 17:43:29,244 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:29,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:29,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:29,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:29,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:29,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:29,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:29,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:29,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:29,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:29,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:29,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:29,248 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:29,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:29,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:29,249 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:29,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:29,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:29,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:29,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:29,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:29,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:29,250 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:29,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:29,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:29,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:29,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:29,746 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:29,747 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2020-09-04 17:43:29,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f947a0bd/7ef14073a4754229b6a7d27b6edc3cae/FLAGdb4c4eadf [2020-09-04 17:43:30,384 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:30,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condmf.c [2020-09-04 17:43:30,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f947a0bd/7ef14073a4754229b6a7d27b6edc3cae/FLAGdb4c4eadf [2020-09-04 17:43:30,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f947a0bd/7ef14073a4754229b6a7d27b6edc3cae [2020-09-04 17:43:30,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:30,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:30,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:30,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:30,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:30,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:30" (1/1) ... [2020-09-04 17:43:30,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500f2ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:30, skipping insertion in model container [2020-09-04 17:43:30,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:30" (1/1) ... [2020-09-04 17:43:30,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:30,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:31,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:31,017 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:31,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:31,058 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:31,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31 WrapperNode [2020-09-04 17:43:31,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:31,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:31,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:31,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:31,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31" (1/1) ... [2020-09-04 17:43:31,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31" (1/1) ... [2020-09-04 17:43:31,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31" (1/1) ... [2020-09-04 17:43:31,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31" (1/1) ... [2020-09-04 17:43:31,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31" (1/1) ... [2020-09-04 17:43:31,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31" (1/1) ... [2020-09-04 17:43:31,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31" (1/1) ... [2020-09-04 17:43:31,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:31,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:31,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:31,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:31,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31" (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 17:43:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:31,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:31,582 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 17:43:31,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:31 BoogieIcfgContainer [2020-09-04 17:43:31,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:31,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:31,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:31,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:31,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:30" (1/3) ... [2020-09-04 17:43:31,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639fa7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:31, skipping insertion in model container [2020-09-04 17:43:31,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:31" (2/3) ... [2020-09-04 17:43:31,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639fa7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:31, skipping insertion in model container [2020-09-04 17:43:31,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:31" (3/3) ... [2020-09-04 17:43:31,597 INFO L109 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-09-04 17:43:31,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:31,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:31,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:31,670 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:31,671 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:31,671 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:31,671 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:31,671 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:31,671 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:31,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:31,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-04 17:43:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 17:43:31,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:31,705 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] [2020-09-04 17:43:31,706 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:31,714 INFO L82 PathProgramCache]: Analyzing trace with hash 246632013, now seen corresponding path program 1 times [2020-09-04 17:43:31,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:31,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062384608] [2020-09-04 17:43:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:31,799 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:31,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:31,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:31,987 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 17:43:31,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062384608] [2020-09-04 17:43:31,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:31,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:43:31,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503292431] [2020-09-04 17:43:32,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:43:32,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:32,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:43:32,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:32,018 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-04 17:43:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:32,231 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2020-09-04 17:43:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:43:32,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-04 17:43:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:32,246 INFO L225 Difference]: With dead ends: 101 [2020-09-04 17:43:32,246 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 17:43:32,251 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 17:43:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 17:43:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-09-04 17:43:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-04 17:43:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-04 17:43:32,311 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 31 [2020-09-04 17:43:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:32,312 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-04 17:43:32,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:43:32,312 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-04 17:43:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 17:43:32,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:32,314 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] [2020-09-04 17:43:32,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:32,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2015253558, now seen corresponding path program 1 times [2020-09-04 17:43:32,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:32,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689345025] [2020-09-04 17:43:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:32,319 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:32,437 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 17:43:32,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689345025] [2020-09-04 17:43:32,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:32,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:43:32,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632458861] [2020-09-04 17:43:32,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:43:32,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:32,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:43:32,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:32,442 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states. [2020-09-04 17:43:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:32,655 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2020-09-04 17:43:32,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:43:32,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-04 17:43:32,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:32,660 INFO L225 Difference]: With dead ends: 98 [2020-09-04 17:43:32,660 INFO L226 Difference]: Without dead ends: 72 [2020-09-04 17:43:32,662 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 17:43:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-04 17:43:32,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2020-09-04 17:43:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-04 17:43:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-09-04 17:43:32,684 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 31 [2020-09-04 17:43:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:32,685 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-09-04 17:43:32,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:43:32,685 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-09-04 17:43:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-04 17:43:32,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:32,687 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] [2020-09-04 17:43:32,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:32,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:32,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:32,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1554786686, now seen corresponding path program 1 times [2020-09-04 17:43:32,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:32,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850208534] [2020-09-04 17:43:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:32,725 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:32,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:32,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:32,900 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:43:32,900 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:32,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:43:32,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:32 BoogieIcfgContainer [2020-09-04 17:43:32,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:32,924 INFO L168 Benchmark]: Toolchain (without parser) took 2183.56 ms. Allocated memory was 145.2 MB in the beginning and 234.4 MB in the end (delta: 89.1 MB). Free memory was 102.7 MB in the beginning and 199.5 MB in the end (delta: -96.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:43:32,925 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 145.2 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 17:43:32,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.34 ms. Allocated memory is still 145.2 MB. Free memory was 102.5 MB in the beginning and 92.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:32,928 INFO L168 Benchmark]: Boogie Preprocessor took 138.22 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.2 MB in the beginning and 180.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:32,928 INFO L168 Benchmark]: RCFGBuilder took 389.82 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 161.2 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:32,929 INFO L168 Benchmark]: TraceAbstraction took 1332.85 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 160.6 MB in the beginning and 199.5 MB in the end (delta: -38.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:43:32,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 145.2 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 317.34 ms. Allocated memory is still 145.2 MB. Free memory was 102.5 MB in the beginning and 92.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.22 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.2 MB in the beginning and 180.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.82 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 161.2 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1332.85 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 160.6 MB in the beginning and 199.5 MB in the end (delta: -38.9 MB). There was no memory consumed. 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] int *a = malloc(sizeof(int)*N); [L28] i = 0 [L28] COND TRUE i < N [L30] a[i] = 0 [L28] i++ [L28] COND FALSE !(i < N) [L33] i = 0 [L33] COND TRUE i < N [L35] COND TRUE N%2 == 1 [L37] EXPR a[i] [L37] a[i] = a[i] + 2 [L33] i++ [L33] COND FALSE !(i < N) [L45] i = 0 [L45] COND TRUE i < N [L47] EXPR a[i] [L47] CALL __VERIFIER_assert(a[i] % 2 == N % 2) [L13] COND TRUE !(cond) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 94 SDslu, 23 SDs, 0 SdLazy, 141 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...