/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.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s2liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:57:05,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:57:05,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:57:05,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:57:05,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:57:05,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:57:05,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:57:05,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:57:05,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:57:05,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:57:05,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:57:05,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:57:05,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:57:05,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:57:05,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:57:05,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:57:05,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:57:05,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:57:05,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:57:05,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:57:05,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:57:05,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:57:05,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:57:05,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:57:05,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:57:05,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:57:05,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:57:05,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:57:05,454 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 [2020-07-20 03:57:05,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:57:05,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:57:05,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:57:05,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:57:05,470 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:57:05,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:57:05,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:57:05,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:57:05,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:57:05,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:57:05,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:57:05,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:57:05,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:57:05,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:57:05,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:57:05,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:57:05,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:57:05,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:57:05,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:57:05,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:57:05,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:57:05,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:57:05,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:57:05,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:57:05,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:57:05,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:57:05,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:57:05,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:57:05,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:57:05,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:57:05,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:57:05,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:57:05,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:57:05,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:57:05,773 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:57:05,774 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2020-07-20 03:57:05,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/712bb8202/b73d84bc0296409aaa4e070906fb8703/FLAGf31e79e7b [2020-07-20 03:57:06,323 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:57:06,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s2liff.c [2020-07-20 03:57:06,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/712bb8202/b73d84bc0296409aaa4e070906fb8703/FLAGf31e79e7b [2020-07-20 03:57:06,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/712bb8202/b73d84bc0296409aaa4e070906fb8703 [2020-07-20 03:57:06,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:57:06,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:57:06,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:57:06,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:57:06,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:57:06,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:57:06" (1/1) ... [2020-07-20 03:57:06,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b101ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06, skipping insertion in model container [2020-07-20 03:57:06,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:57:06" (1/1) ... [2020-07-20 03:57:06,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:57:06,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:57:06,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:57:06,905 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:57:06,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:57:06,940 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:57:06,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06 WrapperNode [2020-07-20 03:57:06,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:57:06,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:57:06,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:57:06,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:57:07,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06" (1/1) ... [2020-07-20 03:57:07,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06" (1/1) ... [2020-07-20 03:57:07,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06" (1/1) ... [2020-07-20 03:57:07,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06" (1/1) ... [2020-07-20 03:57:07,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06" (1/1) ... [2020-07-20 03:57:07,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06" (1/1) ... [2020-07-20 03:57:07,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06" (1/1) ... [2020-07-20 03:57:07,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:57:07,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:57:07,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:57:07,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:57:07,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06" (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 [2020-07-20 03:57:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:57:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:57:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 03:57:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 03:57:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:57:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:57:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:57:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 03:57:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 03:57:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:57:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 03:57:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:57:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:57:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 03:57:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:57:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:57:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:57:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:57:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:57:07,390 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:57:07,390 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 03:57:07,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:57:07 BoogieIcfgContainer [2020-07-20 03:57:07,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:57:07,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:57:07,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:57:07,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:57:07,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:57:06" (1/3) ... [2020-07-20 03:57:07,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a640321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:57:07, skipping insertion in model container [2020-07-20 03:57:07,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:57:06" (2/3) ... [2020-07-20 03:57:07,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a640321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:57:07, skipping insertion in model container [2020-07-20 03:57:07,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:57:07" (3/3) ... [2020-07-20 03:57:07,405 INFO L109 eAbstractionObserver]: Analyzing ICFG s2liff.c [2020-07-20 03:57:07,418 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:57:07,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:57:07,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:57:07,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:57:07,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:57:07,484 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:57:07,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:57:07,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:57:07,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:57:07,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:57:07,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:57:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-20 03:57:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:57:07,512 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:57:07,513 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] [2020-07-20 03:57:07,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:57:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:57:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-07-20 03:57:07,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:57:07,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596368738] [2020-07-20 03:57:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7365feb [2020-07-20 03:57:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:57:07,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596368738] [2020-07-20 03:57:07,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:57:07,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:57:07,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155742823] [2020-07-20 03:57:07,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:57:07,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:57:07,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:57:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:57:07,755 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-07-20 03:57:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:57:07,875 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-07-20 03:57:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:57:07,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 03:57:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:57:07,891 INFO L225 Difference]: With dead ends: 60 [2020-07-20 03:57:07,892 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 03:57:07,898 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 [2020-07-20 03:57:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 03:57:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-20 03:57:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 03:57:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-07-20 03:57:07,937 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-07-20 03:57:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:57:07,938 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-07-20 03:57:07,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:57:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-20 03:57:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:57:07,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:57:07,940 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] [2020-07-20 03:57:07,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:57:07,941 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:57:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:57:07,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-07-20 03:57:07,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:57:07,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607994419] [2020-07-20 03:57:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7365feb [2020-07-20 03:57:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:57:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:57:08,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607994419] [2020-07-20 03:57:08,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:57:08,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:57:08,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857662146] [2020-07-20 03:57:08,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:57:08,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:57:08,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:57:08,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:57:08,064 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-07-20 03:57:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:57:08,195 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-07-20 03:57:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:57:08,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-20 03:57:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:57:08,197 INFO L225 Difference]: With dead ends: 48 [2020-07-20 03:57:08,197 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 03:57:08,198 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 [2020-07-20 03:57:08,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 03:57:08,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-07-20 03:57:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 03:57:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-20 03:57:08,207 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-07-20 03:57:08,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:57:08,207 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-20 03:57:08,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:57:08,208 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-20 03:57:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 03:57:08,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:57:08,209 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] [2020-07-20 03:57:08,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:57:08,210 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:57:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:57:08,210 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-07-20 03:57:08,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:57:08,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057810514] [2020-07-20 03:57:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7365feb [2020-07-20 03:57:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:57:08,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:57:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:57:08,334 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:57:08,378 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:57:08,378 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:57:08,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:57:08,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:57:08 BoogieIcfgContainer [2020-07-20 03:57:08,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:57:08,423 INFO L168 Benchmark]: Toolchain (without parser) took 1768.16 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 101.0 MB in the end (delta: 276.3 kB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:57:08,424 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 03:57:08,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.14 ms. Allocated memory is still 136.8 MB. Free memory was 100.9 MB in the beginning and 90.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:57:08,426 INFO L168 Benchmark]: Boogie Preprocessor took 119.05 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.6 MB in the beginning and 178.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:57:08,427 INFO L168 Benchmark]: RCFGBuilder took 334.96 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 160.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:57:08,428 INFO L168 Benchmark]: TraceAbstraction took 1023.26 ms. Allocated memory is still 200.8 MB. Free memory was 160.1 MB in the beginning and 101.0 MB in the end (delta: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:57:08,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory is still 119.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.14 ms. Allocated memory is still 136.8 MB. Free memory was 100.9 MB in the beginning and 90.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.05 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.6 MB in the beginning and 178.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.96 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 160.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1023.26 ms. Allocated memory is still 200.8 MB. Free memory was 160.1 MB in the beginning and 101.0 MB in the end (delta: 59.1 MB). Peak memory consumption was 59.1 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] = N [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