/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/indp1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:25,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:25,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:25,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:25,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:25,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:25,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:25,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:25,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:25,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:25,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:25,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:25,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:25,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:25,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:25,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:25,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:25,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:25,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:25,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:25,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:25,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:25,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:25,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:25,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:25,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:25,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:25,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:25,867 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 [2020-08-22 16:56:25,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:25,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:25,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:25,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:25,912 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:25,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:25,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:25,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:25,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:25,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:25,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:25,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:25,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:25,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:25,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:25,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:25,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:25,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:25,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:25,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:25,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:25,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:25,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:25,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:25,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:25,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:25,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:25,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:25,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:25,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:26,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:26,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:26,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:26,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:26,240 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:26,241 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp1f.c [2020-08-22 16:56:26,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de075724b/9d6e7ac85abb4d7386f8fe26c30cb345/FLAGf9c3d694d [2020-08-22 16:56:26,786 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:26,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp1f.c [2020-08-22 16:56:26,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de075724b/9d6e7ac85abb4d7386f8fe26c30cb345/FLAGf9c3d694d [2020-08-22 16:56:27,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de075724b/9d6e7ac85abb4d7386f8fe26c30cb345 [2020-08-22 16:56:27,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:27,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:27,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:27,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:27,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:27,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:27" (1/1) ... [2020-08-22 16:56:27,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72808bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27, skipping insertion in model container [2020-08-22 16:56:27,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:27" (1/1) ... [2020-08-22 16:56:27,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:27,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:27,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:27,442 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:27,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:27,561 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:27,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27 WrapperNode [2020-08-22 16:56:27,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:27,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:27,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:27,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:27,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27" (1/1) ... [2020-08-22 16:56:27,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27" (1/1) ... [2020-08-22 16:56:27,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27" (1/1) ... [2020-08-22 16:56:27,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27" (1/1) ... [2020-08-22 16:56:27,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27" (1/1) ... [2020-08-22 16:56:27,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27" (1/1) ... [2020-08-22 16:56:27,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27" (1/1) ... [2020-08-22 16:56:27,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:27,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:27,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:27,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:27,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27" (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 16:56:27,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:27,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:27,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:27,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:27,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:27,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:27,939 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 16:56:27,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:27 BoogieIcfgContainer [2020-08-22 16:56:27,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:27,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:27,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:27,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:27,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:27" (1/3) ... [2020-08-22 16:56:27,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3bdd8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:27, skipping insertion in model container [2020-08-22 16:56:27,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:27" (2/3) ... [2020-08-22 16:56:27,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3bdd8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:27, skipping insertion in model container [2020-08-22 16:56:27,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:27" (3/3) ... [2020-08-22 16:56:27,955 INFO L109 eAbstractionObserver]: Analyzing ICFG indp1f.c [2020-08-22 16:56:27,970 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:27,980 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:27,998 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:28,027 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:28,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:28,027 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:28,028 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:28,028 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:28,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:28,028 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:28,028 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 16:56:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:56:28,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:28,079 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] [2020-08-22 16:56:28,080 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:28,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-22 16:56:28,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:28,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934705663] [2020-08-22 16:56:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:28,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:28,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:28,362 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 16:56:28,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934705663] [2020-08-22 16:56:28,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:28,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:28,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415150909] [2020-08-22 16:56:28,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:28,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:28,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:28,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:28,395 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-22 16:56:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:28,555 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-22 16:56:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:28,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-22 16:56:28,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:28,574 INFO L225 Difference]: With dead ends: 64 [2020-08-22 16:56:28,575 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 16:56:28,579 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 [2020-08-22 16:56:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 16:56:28,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-22 16:56:28,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 16:56:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-22 16:56:28,618 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-22 16:56:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:28,619 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-22 16:56:28,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-22 16:56:28,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:56:28,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:28,620 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] [2020-08-22 16:56:28,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:28,621 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:28,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:28,622 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-22 16:56:28,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:28,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867420543] [2020-08-22 16:56:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:28,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:28,768 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 16:56:28,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867420543] [2020-08-22 16:56:28,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:28,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:56:28,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353980051] [2020-08-22 16:56:28,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:28,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:28,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:28,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:28,773 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-08-22 16:56:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:28,931 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-08-22 16:56:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:28,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-08-22 16:56:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:28,935 INFO L225 Difference]: With dead ends: 59 [2020-08-22 16:56:28,936 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 16:56:28,937 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 16:56:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 16:56:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-08-22 16:56:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 16:56:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-08-22 16:56:28,953 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-08-22 16:56:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:28,953 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-08-22 16:56:28,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-08-22 16:56:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 16:56:28,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:28,958 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] [2020-08-22 16:56:28,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:56:28,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:28,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:28,959 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-08-22 16:56:28,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:28,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442513213] [2020-08-22 16:56:28,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:28,976 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:28,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747969078] [2020-08-22 16:56:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:29,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:29,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:29,131 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:29,132 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:29,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:56:29,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:29 BoogieIcfgContainer [2020-08-22 16:56:29,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:29,391 INFO L168 Benchmark]: Toolchain (without parser) took 2182.48 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 91.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:29,392 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:29,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.17 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 181.0 MB in the end (delta: -80.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:29,394 INFO L168 Benchmark]: Boogie Preprocessor took 36.72 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 179.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:29,395 INFO L168 Benchmark]: RCFGBuilder took 346.44 ms. Allocated memory is still 202.4 MB. Free memory was 179.1 MB in the beginning and 161.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:29,396 INFO L168 Benchmark]: TraceAbstraction took 1440.76 ms. Allocated memory is still 202.4 MB. Free memory was 161.3 MB in the beginning and 91.7 MB in the end (delta: 69.5 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:29,401 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.17 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 181.0 MB in the end (delta: -80.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.72 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 179.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.44 ms. Allocated memory is still 202.4 MB. Free memory was 179.1 MB in the beginning and 161.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1440.76 ms. Allocated memory is still 202.4 MB. Free memory was 161.3 MB in the beginning and 91.7 MB in the end (delta: 69.5 MB). Peak memory consumption was 69.5 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)=2, 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 *a = malloc(sizeof(long long)*N); [L28] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1] [L28] COND TRUE i