/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/ifeqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 18:04:09,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 18:04:09,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 18:04:09,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 18:04:09,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 18:04:09,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 18:04:09,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 18:04:09,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 18:04:09,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 18:04:09,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 18:04:09,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 18:04:09,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 18:04:09,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 18:04:09,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 18:04:09,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 18:04:09,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 18:04:09,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 18:04:09,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 18:04:09,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 18:04:09,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 18:04:09,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 18:04:09,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 18:04:09,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 18:04:09,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 18:04:09,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 18:04:09,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 18:04:09,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 18:04:09,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 18:04:09,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 18:04:09,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 18:04:09,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 18:04:09,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 18:04:09,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 18:04:09,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 18:04:09,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 18:04:09,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 18:04:09,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 18:04:09,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 18:04:09,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 18:04:09,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 18:04:09,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 18:04:09,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 18:04:09,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 18:04:09,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 18:04:09,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 18:04:09,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 18:04:09,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 18:04:09,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 18:04:09,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 18:04:09,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 18:04:09,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 18:04:09,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 18:04:09,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 18:04:09,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 18:04:09,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 18:04:09,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 18:04:09,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 18:04:09,144 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 18:04:09,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 18:04:09,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 18:04:09,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:04:09,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 18:04:09,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 18:04:09,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 18:04:09,146 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 [2020-07-17 18:04:09,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 18:04:09,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 18:04:09,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 18:04:09,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 18:04:09,483 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 18:04:09,484 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-07-17 18:04:09,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09a2844e6/1634970329b547daae25ba20d976f147/FLAG207e76263 [2020-07-17 18:04:10,038 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 18:04:10,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-07-17 18:04:10,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09a2844e6/1634970329b547daae25ba20d976f147/FLAG207e76263 [2020-07-17 18:04:10,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09a2844e6/1634970329b547daae25ba20d976f147 [2020-07-17 18:04:10,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 18:04:10,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 18:04:10,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:10,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 18:04:10,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 18:04:10,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:10" (1/1) ... [2020-07-17 18:04:10,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba7e05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10, skipping insertion in model container [2020-07-17 18:04:10,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:10" (1/1) ... [2020-07-17 18:04:10,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 18:04:10,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 18:04:10,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:10,687 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 18:04:10,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:10,728 INFO L208 MainTranslator]: Completed translation [2020-07-17 18:04:10,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10 WrapperNode [2020-07-17 18:04:10,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:10,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 18:04:10,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 18:04:10,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 18:04:10,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10" (1/1) ... [2020-07-17 18:04:10,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10" (1/1) ... [2020-07-17 18:04:10,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10" (1/1) ... [2020-07-17 18:04:10,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10" (1/1) ... [2020-07-17 18:04:10,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10" (1/1) ... [2020-07-17 18:04:10,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10" (1/1) ... [2020-07-17 18:04:10,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10" (1/1) ... [2020-07-17 18:04:10,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 18:04:10,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 18:04:10,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 18:04:10,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 18:04:10,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:04:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 18:04:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 18:04:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 18:04:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 18:04:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 18:04:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 18:04:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 18:04:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 18:04:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 18:04:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 18:04:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 18:04:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 18:04:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 18:04:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 18:04:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 18:04:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 18:04:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 18:04:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 18:04:11,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 18:04:11,241 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 18:04:11,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:11 BoogieIcfgContainer [2020-07-17 18:04:11,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 18:04:11,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 18:04:11,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 18:04:11,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 18:04:11,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 06:04:10" (1/3) ... [2020-07-17 18:04:11,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221a68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:11, skipping insertion in model container [2020-07-17 18:04:11,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:10" (2/3) ... [2020-07-17 18:04:11,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221a68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:11, skipping insertion in model container [2020-07-17 18:04:11,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:11" (3/3) ... [2020-07-17 18:04:11,259 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2020-07-17 18:04:11,278 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 18:04:11,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 18:04:11,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 18:04:11,335 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 18:04:11,336 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 18:04:11,336 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 18:04:11,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 18:04:11,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 18:04:11,337 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 18:04:11,337 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 18:04:11,337 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 18:04:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-07-17 18:04:11,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 18:04:11,389 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:11,391 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] [2020-07-17 18:04:11,392 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:11,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times [2020-07-17 18:04:11,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:11,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650267450] [2020-07-17 18:04:11,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:04:11,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650267450] [2020-07-17 18:04:11,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:04:11,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 18:04:11,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893607640] [2020-07-17 18:04:11,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 18:04:11,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:04:11,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 18:04:11,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 18:04:11,812 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 5 states. [2020-07-17 18:04:12,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:04:12,199 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2020-07-17 18:04:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 18:04:12,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-17 18:04:12,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:04:12,214 INFO L225 Difference]: With dead ends: 131 [2020-07-17 18:04:12,215 INFO L226 Difference]: Without dead ends: 72 [2020-07-17 18:04:12,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-17 18:04:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-17 18:04:12,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-07-17 18:04:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-17 18:04:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-07-17 18:04:12,290 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 33 [2020-07-17 18:04:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:04:12,291 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-07-17 18:04:12,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 18:04:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-07-17 18:04:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 18:04:12,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:12,294 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] [2020-07-17 18:04:12,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 18:04:12,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:12,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1596799413, now seen corresponding path program 1 times [2020-07-17 18:04:12,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:12,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690069251] [2020-07-17 18:04:12,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:12,327 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 18:04:12,328 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-17 18:04:12,328 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 18:04:12,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 18:04:12,358 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-17 18:04:12,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 06:04:12 BoogieIcfgContainer [2020-07-17 18:04:12,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 18:04:12,362 INFO L168 Benchmark]: Toolchain (without parser) took 1909.02 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 104.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:12,363 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 18:04:12,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.51 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 91.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:12,366 INFO L168 Benchmark]: Boogie Preprocessor took 131.41 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 180.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:12,367 INFO L168 Benchmark]: RCFGBuilder took 384.63 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 160.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:12,368 INFO L168 Benchmark]: TraceAbstraction took 1111.27 ms. Allocated memory is still 202.9 MB. Free memory was 160.6 MB in the beginning and 104.8 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:12,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.51 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 91.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.41 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 180.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.63 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 160.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1111.27 ms. Allocated memory is still 202.9 MB. Free memory was 160.6 MB in the beginning and 104.8 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 [L29] COND TRUE i