/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s52iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:32:26,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:32:26,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:32:26,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:32:26,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:32:26,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:32:26,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:32:26,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:32:26,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:32:26,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:32:26,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:32:26,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:32:26,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:32:26,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:32:26,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:32:26,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:32:26,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:32:26,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:32:26,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:32:26,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:32:26,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:32:26,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:32:26,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:32:26,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:32:26,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:32:26,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:32:26,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:32:26,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:32:26,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:32:26,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:32:26,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:32:26,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:32:26,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:32:26,860 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:32:26,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:32:26,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:32:26,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:32:26,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:32:26,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:32:26,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:32:26,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:32:26,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:32:26,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:32:26,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:32:26,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:32:26,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:32:26,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:32:26,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:32:26,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:32:26,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:32:26,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:26,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:32:26,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:32:26,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:32:26,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:32:26,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:32:26,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:32:26,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:32:26,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:32:27,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:32:27,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:32:27,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:32:27,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:32:27,194 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:32:27,195 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s52iff.c [2020-07-07 11:32:27,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf4e201d/fdb3c0e8860a49658e81884122c152fb/FLAG19c0a8543 [2020-07-07 11:32:27,805 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:32:27,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s52iff.c [2020-07-07 11:32:27,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf4e201d/fdb3c0e8860a49658e81884122c152fb/FLAG19c0a8543 [2020-07-07 11:32:28,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf4e201d/fdb3c0e8860a49658e81884122c152fb [2020-07-07 11:32:28,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:32:28,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:32:28,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:28,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:32:28,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:32:28,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:28" (1/1) ... [2020-07-07 11:32:28,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc1f50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28, skipping insertion in model container [2020-07-07 11:32:28,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:28" (1/1) ... [2020-07-07 11:32:28,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:32:28,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:32:28,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:28,440 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:32:28,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:28,482 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:32:28,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28 WrapperNode [2020-07-07 11:32:28,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:28,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:32:28,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:32:28,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:32:28,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28" (1/1) ... [2020-07-07 11:32:28,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28" (1/1) ... [2020-07-07 11:32:28,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28" (1/1) ... [2020-07-07 11:32:28,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28" (1/1) ... [2020-07-07 11:32:28,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28" (1/1) ... [2020-07-07 11:32:28,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28" (1/1) ... [2020-07-07 11:32:28,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28" (1/1) ... [2020-07-07 11:32:28,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:32:28,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:32:28,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:32:28,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:32:28,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:32:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:32:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:32:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:32:28,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:32:28,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:32:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:32:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:32:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:32:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:32:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:32:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:32:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:32:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:32:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:32:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:32:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:32:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:32:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:32:28,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:32:28,983 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-07 11:32:28,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:28 BoogieIcfgContainer [2020-07-07 11:32:28,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:32:28,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:32:28,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:32:28,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:32:28,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:32:28" (1/3) ... [2020-07-07 11:32:28,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6999a38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:28, skipping insertion in model container [2020-07-07 11:32:28,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:28" (2/3) ... [2020-07-07 11:32:28,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6999a38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:28, skipping insertion in model container [2020-07-07 11:32:28,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:28" (3/3) ... [2020-07-07 11:32:28,997 INFO L109 eAbstractionObserver]: Analyzing ICFG s52iff.c [2020-07-07 11:32:29,011 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:32:29,020 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:32:29,035 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:32:29,061 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:32:29,061 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:32:29,062 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:32:29,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:32:29,064 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:32:29,064 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:32:29,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:32:29,064 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:32:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-07 11:32:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:32:29,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:29,094 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] [2020-07-07 11:32:29,094 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:29,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:29,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-07-07 11:32:29,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:29,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677383054] [2020-07-07 11:32:29,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:29,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677383054] [2020-07-07 11:32:29,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:29,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:32:29,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982922015] [2020-07-07 11:32:29,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:32:29,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:29,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:32:29,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:29,337 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-07-07 11:32:29,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:29,468 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-07-07 11:32:29,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:32:29,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-07 11:32:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:29,479 INFO L225 Difference]: With dead ends: 62 [2020-07-07 11:32:29,480 INFO L226 Difference]: Without dead ends: 29 [2020-07-07 11:32:29,483 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 [2020-07-07 11:32:29,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-07 11:32:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-07 11:32:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-07 11:32:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-07-07 11:32:29,527 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-07-07 11:32:29,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:29,528 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-07-07 11:32:29,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:32:29,528 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-07-07 11:32:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:32:29,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:29,530 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] [2020-07-07 11:32:29,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:32:29,531 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:29,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:29,532 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-07-07 11:32:29,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:29,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921764223] [2020-07-07 11:32:29,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:29,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921764223] [2020-07-07 11:32:29,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:29,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:32:29,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196660179] [2020-07-07 11:32:29,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:32:29,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:29,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:32:29,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:32:29,674 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-07-07 11:32:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:29,836 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-07-07 11:32:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:32:29,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-07 11:32:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:29,839 INFO L225 Difference]: With dead ends: 51 [2020-07-07 11:32:29,839 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 11:32:29,841 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 [2020-07-07 11:32:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 11:32:29,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-07-07 11:32:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 11:32:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-07 11:32:29,851 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-07-07 11:32:29,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:29,852 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-07 11:32:29,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:32:29,852 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-07 11:32:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 11:32:29,854 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:29,854 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] [2020-07-07 11:32:29,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:32:29,855 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-07-07 11:32:29,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:29,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756774030] [2020-07-07 11:32:29,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:30,074 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:32:30,074 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:32:30,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:32:30,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:32:30 BoogieIcfgContainer [2020-07-07 11:32:30,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:32:30,119 INFO L168 Benchmark]: Toolchain (without parser) took 1932.35 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 102.5 MB in the beginning and 100.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:30,120 INFO L168 Benchmark]: CDTParser took 1.58 ms. Allocated memory is still 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 11:32:30,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.87 ms. Allocated memory is still 144.7 MB. Free memory was 102.5 MB in the beginning and 91.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:30,122 INFO L168 Benchmark]: Boogie Preprocessor took 138.14 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 91.5 MB in the beginning and 179.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:30,123 INFO L168 Benchmark]: RCFGBuilder took 364.66 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 160.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:30,124 INFO L168 Benchmark]: TraceAbstraction took 1128.42 ms. Allocated memory is still 201.9 MB. Free memory was 160.7 MB in the beginning and 100.3 MB in the end (delta: 60.4 MB). Peak memory consumption was 60.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:30,129 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.58 ms. Allocated memory is still 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.87 ms. Allocated memory is still 144.7 MB. Free memory was 102.5 MB in the beginning and 91.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.14 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 91.5 MB in the beginning and 179.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.66 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 160.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1128.42 ms. Allocated memory is still 201.9 MB. Free memory was 160.7 MB in the beginning and 100.3 MB in the end (delta: 60.4 MB). Peak memory consumption was 60.4 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() [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; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i