/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:28:29,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:28:29,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:28:29,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:28:29,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:28:29,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:28:29,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:28:29,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:28:29,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:28:29,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:28:29,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:28:29,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:28:29,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:28:29,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:28:29,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:28:29,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:28:29,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:28:29,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:28:29,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:28:29,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:28:29,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:28:29,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:28:29,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:28:29,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:28:29,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:28:29,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:28:29,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:28:29,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:28:29,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:28:29,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:28:29,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:28:29,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:28:29,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:28:29,776 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:28:29,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:28:29,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:28:29,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:28:29,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:28:29,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:28:29,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:28:29,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:28:29,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:28:29,778 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:28:29,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:28:29,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:28:29,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:28:29,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:28:29,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:28:29,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:28:29,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:28:29,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:29,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:28:29,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:28:29,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:28:29,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:28:29,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:28:29,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:28:29,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:28:29,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:28:30,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:28:30,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:28:30,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:28:30,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:28:30,304 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:28:30,306 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2020-09-21 10:28:30,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e0315ca/1810061225e34f8885fb60e262ba211b/FLAG6dab94c88 [2020-09-21 10:28:30,947 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:28:30,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3iff.c [2020-09-21 10:28:30,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e0315ca/1810061225e34f8885fb60e262ba211b/FLAG6dab94c88 [2020-09-21 10:28:31,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e0315ca/1810061225e34f8885fb60e262ba211b [2020-09-21 10:28:31,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:28:31,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:28:31,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:31,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:28:31,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:28:31,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:31" (1/1) ... [2020-09-21 10:28:31,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31, skipping insertion in model container [2020-09-21 10:28:31,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:31" (1/1) ... [2020-09-21 10:28:31,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:28:31,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:28:31,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:31,630 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:28:31,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:31,671 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:28:31,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31 WrapperNode [2020-09-21 10:28:31,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:31,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:28:31,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:28:31,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:28:31,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31" (1/1) ... [2020-09-21 10:28:31,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31" (1/1) ... [2020-09-21 10:28:31,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31" (1/1) ... [2020-09-21 10:28:31,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31" (1/1) ... [2020-09-21 10:28:31,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31" (1/1) ... [2020-09-21 10:28:31,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31" (1/1) ... [2020-09-21 10:28:31,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31" (1/1) ... [2020-09-21 10:28:31,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:28:31,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:28:31,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:28:31,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:28:31,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31" (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 [2020-09-21 10:28:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:28:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:28:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:28:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:28:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:28:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:28:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:28:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:28:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:28:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:28:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:28:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:28:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:28:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:28:32,214 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:28:32,214 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 10:28:32,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:32 BoogieIcfgContainer [2020-09-21 10:28:32,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:28:32,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:28:32,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:28:32,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:28:32,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:28:31" (1/3) ... [2020-09-21 10:28:32,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1dd88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:32, skipping insertion in model container [2020-09-21 10:28:32,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:31" (2/3) ... [2020-09-21 10:28:32,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1dd88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:32, skipping insertion in model container [2020-09-21 10:28:32,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:32" (3/3) ... [2020-09-21 10:28:32,230 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2020-09-21 10:28:32,254 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:28:32,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:28:32,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:28:32,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:28:32,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:28:32,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:28:32,326 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:28:32,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:28:32,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:28:32,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:28:32,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:28:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-09-21 10:28:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 10:28:32,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:32,361 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] [2020-09-21 10:28:32,361 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:32,368 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-09-21 10:28:32,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:32,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226516917] [2020-09-21 10:28:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:32,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226516917] [2020-09-21 10:28:32,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:32,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:28:32,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544150320] [2020-09-21 10:28:32,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:28:32,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:32,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:28:32,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:32,664 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-09-21 10:28:32,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:32,788 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-09-21 10:28:32,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:28:32,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 10:28:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:32,801 INFO L225 Difference]: With dead ends: 54 [2020-09-21 10:28:32,801 INFO L226 Difference]: Without dead ends: 25 [2020-09-21 10:28:32,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-21 10:28:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-21 10:28:32,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-21 10:28:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-21 10:28:32,852 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-09-21 10:28:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:32,853 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-21 10:28:32,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:28:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-21 10:28:32,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 10:28:32,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:32,855 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] [2020-09-21 10:28:32,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:28:32,855 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:32,856 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-09-21 10:28:32,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:32,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214914536] [2020-09-21 10:28:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:32,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:33,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214914536] [2020-09-21 10:28:33,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:33,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:28:33,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873282174] [2020-09-21 10:28:33,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:28:33,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:33,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:28:33,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:28:33,007 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-09-21 10:28:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:33,129 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-09-21 10:28:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:28:33,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-21 10:28:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:33,131 INFO L225 Difference]: With dead ends: 40 [2020-09-21 10:28:33,132 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 10:28:33,133 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 [2020-09-21 10:28:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 10:28:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-09-21 10:28:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 10:28:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-09-21 10:28:33,150 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-09-21 10:28:33,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:33,152 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-09-21 10:28:33,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:28:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-09-21 10:28:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 10:28:33,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:33,154 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] [2020-09-21 10:28:33,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:28:33,155 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:33,155 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-09-21 10:28:33,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:33,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111271123] [2020-09-21 10:28:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:33,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111271123] [2020-09-21 10:28:33,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:28:33,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 10:28:33,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458370242] [2020-09-21 10:28:33,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:28:33,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:33,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:28:33,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:28:33,663 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-09-21 10:28:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:34,112 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-21 10:28:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:28:34,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-09-21 10:28:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:34,117 INFO L225 Difference]: With dead ends: 42 [2020-09-21 10:28:34,117 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 10:28:34,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-09-21 10:28:34,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 10:28:34,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-09-21 10:28:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 10:28:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-21 10:28:34,128 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-09-21 10:28:34,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:34,128 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-21 10:28:34,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:28:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-21 10:28:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 10:28:34,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:34,130 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] [2020-09-21 10:28:34,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:28:34,130 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:34,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:34,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-09-21 10:28:34,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:34,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117439018] [2020-09-21 10:28:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:34,155 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 10:28:34,155 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 10:28:34,155 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:28:34,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:28:34,205 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 10:28:34,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:28:34 BoogieIcfgContainer [2020-09-21 10:28:34,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:28:34,217 INFO L168 Benchmark]: Toolchain (without parser) took 2928.68 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 104.0 MB in the beginning and 139.7 MB in the end (delta: -35.7 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:34,218 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:28:34,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.62 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 92.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:34,223 INFO L168 Benchmark]: Boogie Preprocessor took 123.57 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.9 MB in the beginning and 180.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:34,224 INFO L168 Benchmark]: RCFGBuilder took 422.76 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 163.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:34,229 INFO L168 Benchmark]: TraceAbstraction took 1984.51 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 163.0 MB in the beginning and 139.7 MB in the end (delta: 23.4 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:34,236 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 383.62 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 92.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.57 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.9 MB in the beginning and 180.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.76 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 163.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1984.51 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 163.0 MB in the beginning and 139.7 MB in the end (delta: 23.4 MB). Peak memory consumption was 55.9 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 sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i