/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/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:00:49,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:00:49,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:00:49,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:00:49,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:00:49,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:00:49,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:00:49,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:00:49,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:00:49,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:00:49,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:00:49,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:00:49,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:00:49,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:00:49,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:00:49,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:00:49,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:00:49,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:00:49,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:00:49,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:00:49,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:00:49,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:00:49,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:00:49,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:00:49,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 23:00:49,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 23:00:49,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 23:00:49,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 23:00:49,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 23:00:49,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 23:00:49,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:00:49,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:00:49,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:00:49,214 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 23:00:49,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:00:49,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:00:49,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:00:49,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:00:49,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:00:49,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:00:49,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:00:49,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:00:49,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:00:49,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:00:49,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:00:49,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:00:49,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:00:49,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:00:49,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:00:49,238 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:00:49,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:00:49,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:00:49,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:00:49,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:00:49,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:00:49,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:00:49,239 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 23:00:49,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:00:49,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:00:49,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:00:49,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:00:49,637 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:00:49,638 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-22 23:00:49,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd84b743d/289ac30c56294c32b1ac85a4e1747acf/FLAGc960d07c5 [2020-08-22 23:00:50,249 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:00:50,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-22 23:00:50,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd84b743d/289ac30c56294c32b1ac85a4e1747acf/FLAGc960d07c5 [2020-08-22 23:00:50,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd84b743d/289ac30c56294c32b1ac85a4e1747acf [2020-08-22 23:00:50,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:00:50,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:00:50,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:50,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:00:50,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:00:50,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:50" (1/1) ... [2020-08-22 23:00:50,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cddbe32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:50, skipping insertion in model container [2020-08-22 23:00:50,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:50" (1/1) ... [2020-08-22 23:00:50,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:00:50,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:00:50,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:50,872 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:00:50,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:51,018 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:00:51,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51 WrapperNode [2020-08-22 23:00:51,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:51,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:00:51,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:00:51,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:00:51,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51" (1/1) ... [2020-08-22 23:00:51,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51" (1/1) ... [2020-08-22 23:00:51,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51" (1/1) ... [2020-08-22 23:00:51,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51" (1/1) ... [2020-08-22 23:00:51,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51" (1/1) ... [2020-08-22 23:00:51,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51" (1/1) ... [2020-08-22 23:00:51,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51" (1/1) ... [2020-08-22 23:00:51,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:00:51,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:00:51,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:00:51,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:00:51,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51" (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 23:00:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:00:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:00:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:00:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:00:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:00:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:00:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:00:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:00:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:00:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:00:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 23:00:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:00:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:00:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 23:00:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:00:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:00:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:00:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:00:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:00:51,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:00:51,529 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 23:00:51,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:51 BoogieIcfgContainer [2020-08-22 23:00:51,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:00:51,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:00:51,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:00:51,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:00:51,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:00:50" (1/3) ... [2020-08-22 23:00:51,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648597dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:51, skipping insertion in model container [2020-08-22 23:00:51,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:51" (2/3) ... [2020-08-22 23:00:51,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648597dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:51, skipping insertion in model container [2020-08-22 23:00:51,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:51" (3/3) ... [2020-08-22 23:00:51,546 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-08-22 23:00:51,558 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:00:51,566 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:00:51,591 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:00:51,623 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:00:51,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:00:51,624 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:00:51,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:00:51,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:00:51,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:00:51,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:00:51,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:00:51,642 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-22 23:00:51,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 23:00:51,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:51,657 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] [2020-08-22 23:00:51,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:51,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1932017966, now seen corresponding path program 1 times [2020-08-22 23:00:51,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:51,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307155299] [2020-08-22 23:00:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:51,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:51,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:51,962 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 23:00:51,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307155299] [2020-08-22 23:00:51,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:51,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:00:51,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282262105] [2020-08-22 23:00:51,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:00:51,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:51,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:00:51,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:51,986 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-08-22 23:00:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:52,255 INFO L93 Difference]: Finished difference Result 161 states and 188 transitions. [2020-08-22 23:00:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:00:52,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-08-22 23:00:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:52,270 INFO L225 Difference]: With dead ends: 161 [2020-08-22 23:00:52,271 INFO L226 Difference]: Without dead ends: 80 [2020-08-22 23:00:52,275 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 23:00:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-08-22 23:00:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-08-22 23:00:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-22 23:00:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2020-08-22 23:00:52,338 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 41 [2020-08-22 23:00:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:52,339 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2020-08-22 23:00:52,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:00:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2020-08-22 23:00:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 23:00:52,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:52,342 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] [2020-08-22 23:00:52,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:00:52,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:52,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:52,343 INFO L82 PathProgramCache]: Analyzing trace with hash -690131343, now seen corresponding path program 1 times [2020-08-22 23:00:52,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:52,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162392304] [2020-08-22 23:00:52,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:52,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:52,541 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 23:00:52,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162392304] [2020-08-22 23:00:52,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:52,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:00:52,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248619109] [2020-08-22 23:00:52,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:00:52,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:52,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:00:52,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:00:52,547 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand 5 states. [2020-08-22 23:00:52,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:52,890 INFO L93 Difference]: Finished difference Result 168 states and 183 transitions. [2020-08-22 23:00:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:00:52,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-08-22 23:00:52,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:52,895 INFO L225 Difference]: With dead ends: 168 [2020-08-22 23:00:52,895 INFO L226 Difference]: Without dead ends: 118 [2020-08-22 23:00:52,897 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 23:00:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-08-22 23:00:52,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 85. [2020-08-22 23:00:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 23:00:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-08-22 23:00:52,921 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 41 [2020-08-22 23:00:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:52,921 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-08-22 23:00:52,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:00:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-08-22 23:00:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 23:00:52,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:52,925 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, 1, 1, 1, 1] [2020-08-22 23:00:52,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:00:52,925 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:52,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1472096967, now seen corresponding path program 1 times [2020-08-22 23:00:52,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:52,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032909341] [2020-08-22 23:00:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:00:52,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:00:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:00:53,090 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:00:53,151 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 23:00:53,152 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:00:53,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:00:53,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:00:53 BoogieIcfgContainer [2020-08-22 23:00:53,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:00:53,228 INFO L168 Benchmark]: Toolchain (without parser) took 2612.37 ms. Allocated memory was 144.7 MB in the beginning and 231.7 MB in the end (delta: 87.0 MB). Free memory was 101.5 MB in the beginning and 165.4 MB in the end (delta: -63.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:53,229 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:00:53,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.14 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 101.3 MB in the beginning and 179.6 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:53,231 INFO L168 Benchmark]: Boogie Preprocessor took 79.13 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 177.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:53,232 INFO L168 Benchmark]: RCFGBuilder took 436.86 ms. Allocated memory is still 200.8 MB. Free memory was 177.2 MB in the beginning and 153.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:53,233 INFO L168 Benchmark]: TraceAbstraction took 1687.56 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 152.7 MB in the beginning and 165.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:53,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 403.14 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 101.3 MB in the beginning and 179.6 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.13 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 177.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.86 ms. Allocated memory is still 200.8 MB. Free memory was 177.2 MB in the beginning and 153.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1687.56 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 152.7 MB in the beginning and 165.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; VAL [\old(N)=0, N=1] [L26] long long sum[1]; VAL [\old(N)=0, N=1, sum={6:0}] [L27] long long *a = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={6:0}] [L28] long long *b = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-1:0}, b={4:0}, malloc(sizeof(long long)*N)={4:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={6:0}] [L30] sum[0] = 0 VAL [\old(N)=0, a={-1:0}, b={4:0}, malloc(sizeof(long long)*N)={4:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={6:0}] [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={4:0}, i=0, malloc(sizeof(long long)*N)={4:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={6:0}] [L31] COND TRUE i