/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ss3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:00:55,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:00:55,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:00:55,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:00:55,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:00:55,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:00:55,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:00:55,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:00:55,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:00:55,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:00:55,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:00:55,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:00:55,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:00:55,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:00:55,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:00:55,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:00:55,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:00:55,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:00:55,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:00:55,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:00:55,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:00:55,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:00:55,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:00:55,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:00:55,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:00:55,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:00:55,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:00:55,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:00:55,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:00:55,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:00:55,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:00:55,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:00:55,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:00:55,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:00:55,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:00:55,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:00:55,652 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:00:55,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:00:55,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:00:55,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:00:55,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:00:55,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:00:55,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:00:55,653 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 23:00:55,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:00:55,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:00:55,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:00:55,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:00:55,978 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:00:55,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2020-08-22 23:00:56,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3edb496/cefe7eec802144659313a2c5e28b1908/FLAGf40cb76ce [2020-08-22 23:00:56,606 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:00:56,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c [2020-08-22 23:00:56,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3edb496/cefe7eec802144659313a2c5e28b1908/FLAGf40cb76ce [2020-08-22 23:00:56,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3edb496/cefe7eec802144659313a2c5e28b1908 [2020-08-22 23:00:56,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:00:56,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:00:56,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:56,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:00:56,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:00:56,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:56" (1/1) ... [2020-08-22 23:00:56,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:56, skipping insertion in model container [2020-08-22 23:00:56,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:56" (1/1) ... [2020-08-22 23:00:56,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:00:56,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:00:57,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:57,205 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:00:57,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:57,249 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:00:57,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57 WrapperNode [2020-08-22 23:00:57,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:57,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:00:57,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:00:57,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:00:57,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57" (1/1) ... [2020-08-22 23:00:57,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57" (1/1) ... [2020-08-22 23:00:57,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57" (1/1) ... [2020-08-22 23:00:57,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57" (1/1) ... [2020-08-22 23:00:57,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57" (1/1) ... [2020-08-22 23:00:57,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57" (1/1) ... [2020-08-22 23:00:57,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57" (1/1) ... [2020-08-22 23:00:57,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:00:57,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:00:57,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:00:57,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:00:57,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:00:57,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:00:57,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:00:57,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:00:57,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:00:57,441 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:00:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:00:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:00:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:00:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:00:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:00:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 23:00:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:00:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:00:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 23:00:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:00:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:00:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:00:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:00:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:00:57,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:00:57,840 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 23:00:57,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:57 BoogieIcfgContainer [2020-08-22 23:00:57,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:00:57,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:00:57,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:00:57,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:00:57,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:00:56" (1/3) ... [2020-08-22 23:00:57,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3496f934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:57, skipping insertion in model container [2020-08-22 23:00:57,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:57" (2/3) ... [2020-08-22 23:00:57,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3496f934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:57, skipping insertion in model container [2020-08-22 23:00:57,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:57" (3/3) ... [2020-08-22 23:00:57,871 INFO L109 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-08-22 23:00:57,882 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:00:57,890 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:00:57,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:00:57,937 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:00:57,938 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:00:57,938 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:00:57,938 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:00:57,939 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:00:57,939 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:00:57,939 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:00:57,939 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:00:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-08-22 23:00:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 23:00:57,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:57,971 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] [2020-08-22 23:00:57,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:57,979 INFO L82 PathProgramCache]: Analyzing trace with hash -464195749, now seen corresponding path program 1 times [2020-08-22 23:00:57,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:57,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130414902] [2020-08-22 23:00:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:58,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:00:58,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130414902] [2020-08-22 23:00:58,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:58,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:00:58,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087316277] [2020-08-22 23:00:58,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:00:58,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:58,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:00:58,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:58,288 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 3 states. [2020-08-22 23:00:58,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:58,529 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2020-08-22 23:00:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:00:58,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-08-22 23:00:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:58,543 INFO L225 Difference]: With dead ends: 147 [2020-08-22 23:00:58,543 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 23:00:58,548 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 [2020-08-22 23:00:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 23:00:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-08-22 23:00:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-22 23:00:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-22 23:00:58,606 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 37 [2020-08-22 23:00:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:58,606 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-22 23:00:58,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:00:58,607 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-22 23:00:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 23:00:58,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:58,609 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] [2020-08-22 23:00:58,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:00:58,610 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:58,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:58,610 INFO L82 PathProgramCache]: Analyzing trace with hash 853879691, now seen corresponding path program 1 times [2020-08-22 23:00:58,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:58,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860087760] [2020-08-22 23:00:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:58,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:58,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:00:58,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860087760] [2020-08-22 23:00:58,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:58,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:00:58,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724381135] [2020-08-22 23:00:58,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:00:58,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:58,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:00:58,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:00:58,864 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 5 states. [2020-08-22 23:00:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:59,165 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2020-08-22 23:00:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:00:59,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-22 23:00:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:59,167 INFO L225 Difference]: With dead ends: 144 [2020-08-22 23:00:59,168 INFO L226 Difference]: Without dead ends: 102 [2020-08-22 23:00:59,169 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 [2020-08-22 23:00:59,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-22 23:00:59,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 75. [2020-08-22 23:00:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 23:00:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-08-22 23:00:59,187 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 37 [2020-08-22 23:00:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:59,187 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-08-22 23:00:59,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:00:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-08-22 23:00:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 23:00:59,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:59,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:59,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:00:59,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:59,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1805527949, now seen corresponding path program 1 times [2020-08-22 23:00:59,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:59,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278438921] [2020-08-22 23:00:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:59,270 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 23:00:59,270 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 23:00:59,270 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:00:59,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:00:59,294 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 23:00:59,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:00:59 BoogieIcfgContainer [2020-08-22 23:00:59,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:00:59,298 INFO L168 Benchmark]: Toolchain (without parser) took 2369.45 ms. Allocated memory was 138.4 MB in the beginning and 233.8 MB in the end (delta: 95.4 MB). Free memory was 101.3 MB in the beginning and 187.9 MB in the end (delta: -86.6 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:59,299 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 23:00:59,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.32 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 90.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:59,301 INFO L168 Benchmark]: Boogie Preprocessor took 126.86 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.3 MB in the beginning and 179.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:59,302 INFO L168 Benchmark]: RCFGBuilder took 478.86 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 156.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:59,303 INFO L168 Benchmark]: TraceAbstraction took 1437.36 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.2 MB in the beginning and 187.9 MB in the end (delta: -31.7 MB). Peak memory consumption was 272.2 kB. Max. memory is 7.1 GB. [2020-08-22 23:00:59,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.32 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 90.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.86 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.3 MB in the beginning and 179.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.86 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 156.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1437.36 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.2 MB in the beginning and 187.9 MB in the end (delta: -31.7 MB). Peak memory consumption was 272.2 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i