/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/ifeqn3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:09:22,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:09:22,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:09:22,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:09:22,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:09:22,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:09:22,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:09:22,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:09:22,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:09:22,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:09:22,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:09:22,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:09:22,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:09:22,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:09:22,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:09:22,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:09:22,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:09:22,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:09:22,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:09:22,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:09:22,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:09:22,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:09:22,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:09:22,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:09:22,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:09:22,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:09:22,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:09:22,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:09:22,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:09:22,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-04 23:09:22,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:09:22,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:09:22,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:09:22,772 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 23:09:22,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:09:22,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:09:22,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:09:22,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:09:22,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:09:22,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:09:22,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:09:22,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:09:22,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:09:22,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:09:22,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:09:22,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:09:22,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:09:22,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:09:22,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:09:22,788 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:09:22,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:09:22,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:09:22,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:22,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:09:22,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:09:22,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:09:22,790 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 23:09:23,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:09:23,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:09:23,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:09:23,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:09:23,281 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:09:23,282 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn3f.c [2020-09-04 23:09:23,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eff1a45ac/23ea41b9883546dabb286146da21ed72/FLAG497c5adf2 [2020-09-04 23:09:23,855 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:09:23,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn3f.c [2020-09-04 23:09:23,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eff1a45ac/23ea41b9883546dabb286146da21ed72/FLAG497c5adf2 [2020-09-04 23:09:24,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eff1a45ac/23ea41b9883546dabb286146da21ed72 [2020-09-04 23:09:24,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:09:24,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:09:24,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:24,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:09:24,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:09:24,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:24" (1/1) ... [2020-09-04 23:09:24,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc4fd3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24, skipping insertion in model container [2020-09-04 23:09:24,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:24" (1/1) ... [2020-09-04 23:09:24,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:09:24,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:09:24,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:24,572 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:09:24,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:24,613 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:09:24,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24 WrapperNode [2020-09-04 23:09:24,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:24,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:09:24,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:09:24,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:09:24,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24" (1/1) ... [2020-09-04 23:09:24,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24" (1/1) ... [2020-09-04 23:09:24,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24" (1/1) ... [2020-09-04 23:09:24,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24" (1/1) ... [2020-09-04 23:09:24,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24" (1/1) ... [2020-09-04 23:09:24,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24" (1/1) ... [2020-09-04 23:09:24,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24" (1/1) ... [2020-09-04 23:09:24,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:09:24,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:09:24,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:09:24,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:09:24,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24" (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 23:09:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:09:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:09:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:09:24,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:09:24,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:09:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:09:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:09:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:09:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:09:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:09:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:09:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:09:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:09:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:09:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:09:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:09:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:09:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:09:25,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:09:25,178 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 23:09:25,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:25 BoogieIcfgContainer [2020-09-04 23:09:25,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:09:25,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:09:25,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:09:25,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:09:25,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:09:24" (1/3) ... [2020-09-04 23:09:25,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6691d15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:25, skipping insertion in model container [2020-09-04 23:09:25,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:24" (2/3) ... [2020-09-04 23:09:25,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6691d15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:25, skipping insertion in model container [2020-09-04 23:09:25,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:25" (3/3) ... [2020-09-04 23:09:25,200 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn3f.c [2020-09-04 23:09:25,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:09:25,218 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:09:25,236 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:09:25,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:09:25,263 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:09:25,263 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:09:25,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:09:25,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:09:25,264 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:09:25,264 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:09:25,264 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:09:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-04 23:09:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 23:09:25,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:25,295 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 23:09:25,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:25,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:25,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times [2020-09-04 23:09:25,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:25,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011292271] [2020-09-04 23:09:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:25,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:25,617 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 23:09:25,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011292271] [2020-09-04 23:09:25,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:25,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:09:25,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237015207] [2020-09-04 23:09:25,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:09:25,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:25,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:09:25,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:09:25,645 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 5 states. [2020-09-04 23:09:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:26,026 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2020-09-04 23:09:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:09:26,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-04 23:09:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:26,043 INFO L225 Difference]: With dead ends: 131 [2020-09-04 23:09:26,043 INFO L226 Difference]: Without dead ends: 72 [2020-09-04 23:09:26,049 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 23:09:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-04 23:09:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-04 23:09:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 23:09:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-04 23:09:26,123 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 33 [2020-09-04 23:09:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:26,124 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-04 23:09:26,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:09:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-04 23:09:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 23:09:26,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:26,127 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 23:09:26,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:09:26,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1596799413, now seen corresponding path program 1 times [2020-09-04 23:09:26,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:26,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872105391] [2020-09-04 23:09:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:26,162 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 23:09:26,162 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 23:09:26,163 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:09:26,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:09:26,193 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 23:09:26,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:09:26 BoogieIcfgContainer [2020-09-04 23:09:26,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:09:26,198 INFO L168 Benchmark]: Toolchain (without parser) took 1986.45 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 103.0 MB in the end (delta: -365.2 kB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:26,199 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:09:26,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.58 ms. Allocated memory is still 138.4 MB. Free memory was 102.4 MB in the beginning and 92.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:26,201 INFO L168 Benchmark]: Boogie Preprocessor took 118.45 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 179.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:26,202 INFO L168 Benchmark]: RCFGBuilder took 450.63 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 159.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:26,203 INFO L168 Benchmark]: TraceAbstraction took 1009.35 ms. Allocated memory is still 201.3 MB. Free memory was 159.0 MB in the beginning and 103.0 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:26,207 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 400.58 ms. Allocated memory is still 138.4 MB. Free memory was 102.4 MB in the beginning and 92.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.45 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 179.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.63 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 159.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1009.35 ms. Allocated memory is still 201.3 MB. Free memory was 159.0 MB in the beginning and 103.0 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.1 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