/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 0.1.25-3af5e1f [2020-09-04 23:09:20,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:09:20,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:09:20,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:09:20,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:09:20,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:09:20,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:09:20,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:09:20,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:09:20,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:09:20,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:09:20,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:09:20,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:09:20,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:09:20,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:09:20,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:09:20,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:09:20,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:09:20,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:09:20,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:09:20,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:09:20,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:09:20,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:09:20,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:09:20,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:09:20,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:09:20,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:09:20,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:09:20,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:09:20,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:09:20,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:09:20,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:09:20,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:09:20,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:09:20,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:09:20,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:09:20,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:09:20,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:09:20,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:09:20,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:09:20,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:09:20,342 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 23:09:20,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:09:20,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:09:20,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:09:20,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:09:20,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:09:20,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:09:20,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:09:20,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:09:20,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:09:20,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:09:20,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:09:20,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:09:20,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:09:20,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:09:20,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:09:20,369 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:09:20,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:09:20,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:09:20,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:20,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:09:20,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:09:20,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:09:20,371 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 [2020-09-04 23:09:20,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:09:20,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:09:20,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:09:20,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:09:20,839 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:09:20,840 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-04 23:09:20,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3809976/231fceadd32a4edfbbc3b9a98d55459e/FLAGf156d042d [2020-09-04 23:09:21,465 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:09:21,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-04 23:09:21,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3809976/231fceadd32a4edfbbc3b9a98d55459e/FLAGf156d042d [2020-09-04 23:09:21,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3809976/231fceadd32a4edfbbc3b9a98d55459e [2020-09-04 23:09:21,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:09:21,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:09:21,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:21,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:09:21,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:09:21,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:21" (1/1) ... [2020-09-04 23:09:21,830 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 04.09 11:09:21, skipping insertion in model container [2020-09-04 23:09:21,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:21" (1/1) ... [2020-09-04 23:09:21,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:09:21,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:09:22,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:22,109 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:09:22,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:22,150 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:09:22,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22 WrapperNode [2020-09-04 23:09:22,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:22,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:09:22,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:09:22,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:09:22,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22" (1/1) ... [2020-09-04 23:09:22,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22" (1/1) ... [2020-09-04 23:09:22,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22" (1/1) ... [2020-09-04 23:09:22,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22" (1/1) ... [2020-09-04 23:09:22,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22" (1/1) ... [2020-09-04 23:09:22,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22" (1/1) ... [2020-09-04 23:09:22,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22" (1/1) ... [2020-09-04 23:09:22,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:09:22,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:09:22,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:09:22,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:09:22,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22" (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 23:09:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:09:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:09:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:09:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:09:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:09:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:09:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:09:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:09:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:09:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:09:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:09:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:09:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:09:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:09:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:09:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:09:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:09:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:09:22,738 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:09:22,739 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 23:09:22,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:22 BoogieIcfgContainer [2020-09-04 23:09:22,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:09:22,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:09:22,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:09:22,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:09:22,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:09:21" (1/3) ... [2020-09-04 23:09:22,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4ca9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:22, skipping insertion in model container [2020-09-04 23:09:22,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:22" (2/3) ... [2020-09-04 23:09:22,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4ca9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:22, skipping insertion in model container [2020-09-04 23:09:22,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:22" (3/3) ... [2020-09-04 23:09:22,755 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2020-09-04 23:09:22,764 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:09:22,774 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:09:22,794 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:09:22,823 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:09:22,823 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:09:22,823 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:09:22,823 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:09:22,823 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:09:22,824 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:09:22,824 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:09:22,824 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:09:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-04 23:09:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 23:09:22,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:22,855 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] [2020-09-04 23:09:22,855 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:22,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times [2020-09-04 23:09:22,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:22,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012441057] [2020-09-04 23:09:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:23,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:23,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:23,191 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 23:09:23,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012441057] [2020-09-04 23:09:23,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:23,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:09:23,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890003924] [2020-09-04 23:09:23,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:09:23,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:23,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:09:23,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:09:23,229 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 5 states. [2020-09-04 23:09:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:23,546 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2020-09-04 23:09:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:09:23,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-04 23:09:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:23,562 INFO L225 Difference]: With dead ends: 131 [2020-09-04 23:09:23,562 INFO L226 Difference]: Without dead ends: 72 [2020-09-04 23:09:23,567 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 23:09:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-04 23:09:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-04 23:09:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 23:09:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-04 23:09:23,638 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 33 [2020-09-04 23:09:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:23,638 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-04 23:09:23,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:09:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-04 23:09:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 23:09:23,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:23,641 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] [2020-09-04 23:09:23,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:09:23,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:23,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1596799413, now seen corresponding path program 1 times [2020-09-04 23:09:23,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:23,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112530904] [2020-09-04 23:09:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:23,673 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 23:09:23,674 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 23:09:23,674 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:09:23,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:09:23,724 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 23:09:23,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:09:23 BoogieIcfgContainer [2020-09-04 23:09:23,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:09:23,729 INFO L168 Benchmark]: Toolchain (without parser) took 1908.13 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 104.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:23,732 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-04 23:09:23,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.73 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 91.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:23,736 INFO L168 Benchmark]: Boogie Preprocessor took 129.75 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 180.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:23,737 INFO L168 Benchmark]: RCFGBuilder took 463.32 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 161.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:23,739 INFO L168 Benchmark]: TraceAbstraction took 978.60 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 104.9 MB in the end (delta: 56.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:23,749 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.73 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 91.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.75 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 91.6 MB in the beginning and 180.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.32 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 161.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 978.60 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 104.9 MB in the end (delta: 56.2 MB). Peak memory consumption was 56.2 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