/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 NUM_VARIABLES --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/s4liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:47:38,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:47:38,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:47:38,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 01:47:38,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:47:38,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:47:38,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:47:38,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:47:38,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:47:38,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:47:38,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:47:38,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:47:38,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:47:38,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:47:38,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:47:38,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:47:38,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:47:38,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:47:38,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:47:38,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:47:38,915 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 01:47:38,933 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:47:38,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:47:38,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:47:38,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:47:38,935 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:47:38,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:47:38,935 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:47:38,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:47:38,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:47:38,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:47:38,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:47:38,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:47:38,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:47:38,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:47:38,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:47:38,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:47:38,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:47:38,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:47:38,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:47:38,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:47:38,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:47:38,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:47:38,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:47:38,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:47:38,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:47:38,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:47:38,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:47:38,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:47:38,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:47:38,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 01:47:39,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:47:39,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:47:39,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:47:39,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:47:39,248 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:47:39,249 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4liff.c [2020-07-20 01:47:39,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83445c655/59aebff4909e4534b8a75cef2bb8426b/FLAG0980fb33b [2020-07-20 01:47:39,831 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:47:39,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4liff.c [2020-07-20 01:47:39,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83445c655/59aebff4909e4534b8a75cef2bb8426b/FLAG0980fb33b [2020-07-20 01:47:40,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83445c655/59aebff4909e4534b8a75cef2bb8426b [2020-07-20 01:47:40,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:47:40,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:47:40,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:40,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:47:40,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:47:40,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:40" (1/1) ... [2020-07-20 01:47:40,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d3a73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40, skipping insertion in model container [2020-07-20 01:47:40,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:40" (1/1) ... [2020-07-20 01:47:40,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:47:40,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:47:40,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:40,463 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:47:40,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:40,499 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:47:40,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40 WrapperNode [2020-07-20 01:47:40,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:40,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:47:40,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:47:40,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:47:40,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40" (1/1) ... [2020-07-20 01:47:40,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40" (1/1) ... [2020-07-20 01:47:40,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40" (1/1) ... [2020-07-20 01:47:40,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40" (1/1) ... [2020-07-20 01:47:40,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40" (1/1) ... [2020-07-20 01:47:40,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40" (1/1) ... [2020-07-20 01:47:40,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40" (1/1) ... [2020-07-20 01:47:40,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:47:40,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:47:40,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:47:40,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:47:40,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40" (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 01:47:40,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:47:40,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:47:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:47:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:47:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:47:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:47:40,706 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:47:40,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:47:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:47:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:47:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 01:47:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:47:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:47:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:47:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:47:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:47:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:47:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:47:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:47:41,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:47:41,012 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 01:47:41,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:41 BoogieIcfgContainer [2020-07-20 01:47:41,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:47:41,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:47:41,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:47:41,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:47:41,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:47:40" (1/3) ... [2020-07-20 01:47:41,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484a51a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:41, skipping insertion in model container [2020-07-20 01:47:41,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:40" (2/3) ... [2020-07-20 01:47:41,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484a51a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:41, skipping insertion in model container [2020-07-20 01:47:41,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:41" (3/3) ... [2020-07-20 01:47:41,036 INFO L109 eAbstractionObserver]: Analyzing ICFG s4liff.c [2020-07-20 01:47:41,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:47:41,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:47:41,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:47:41,104 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:47:41,104 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:47:41,104 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:47:41,104 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:47:41,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:47:41,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:47:41,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:47:41,105 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:47:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-20 01:47:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 01:47:41,128 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:41,129 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 01:47:41,129 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:41,134 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-07-20 01:47:41,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:41,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145435260] [2020-07-20 01:47:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5c2bb67b [2020-07-20 01:47:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:41,370 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 01:47:41,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145435260] [2020-07-20 01:47:41,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:47:41,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:47:41,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914023703] [2020-07-20 01:47:41,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:47:41,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:47:41,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:47:41,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:47:41,401 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-07-20 01:47:41,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:47:41,515 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-07-20 01:47:41,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:47:41,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 01:47:41,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:47:41,527 INFO L225 Difference]: With dead ends: 60 [2020-07-20 01:47:41,528 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 01:47:41,532 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 01:47:41,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 01:47:41,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-20 01:47:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 01:47:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-07-20 01:47:41,578 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-07-20 01:47:41,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:47:41,579 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-07-20 01:47:41,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:47:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-20 01:47:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 01:47:41,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:41,581 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 01:47:41,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:47:41,582 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:41,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:41,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-07-20 01:47:41,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:41,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142072000] [2020-07-20 01:47:41,583 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5c2bb67b [2020-07-20 01:47:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:41,704 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 01:47:41,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142072000] [2020-07-20 01:47:41,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:47:41,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:47:41,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444766201] [2020-07-20 01:47:41,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:47:41,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:47:41,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:47:41,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:47:41,709 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-07-20 01:47:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:47:41,843 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-07-20 01:47:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:47:41,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-20 01:47:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:47:41,845 INFO L225 Difference]: With dead ends: 48 [2020-07-20 01:47:41,846 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 01:47:41,847 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 01:47:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 01:47:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-07-20 01:47:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 01:47:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-20 01:47:41,856 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-07-20 01:47:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:47:41,857 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-20 01:47:41,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:47:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-20 01:47:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 01:47:41,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:41,859 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 01:47:41,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:47:41,859 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:41,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:41,860 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-07-20 01:47:41,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:41,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434385324] [2020-07-20 01:47:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5c2bb67b [2020-07-20 01:47:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:47:41,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:47:41,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:42,015 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:47:42,015 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:47:42,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 01:47:42,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:47:42 BoogieIcfgContainer [2020-07-20 01:47:42,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:47:42,060 INFO L168 Benchmark]: Toolchain (without parser) took 1855.53 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 102.5 MB in the end (delta: -382.8 kB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:42,062 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:47:42,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.37 ms. Allocated memory is still 137.9 MB. Free memory was 101.7 MB in the beginning and 91.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:42,065 INFO L168 Benchmark]: Boogie Preprocessor took 131.61 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.0 MB in the beginning and 178.7 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:42,067 INFO L168 Benchmark]: RCFGBuilder took 393.73 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 161.7 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:42,068 INFO L168 Benchmark]: TraceAbstraction took 1029.72 ms. Allocated memory is still 201.3 MB. Free memory was 161.0 MB in the beginning and 102.5 MB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:42,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.37 ms. Allocated memory is still 137.9 MB. Free memory was 101.7 MB in the beginning and 91.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.61 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.0 MB in the beginning and 178.7 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.73 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 161.7 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1029.72 ms. Allocated memory is still 201.3 MB. Free memory was 161.0 MB in the beginning and 102.5 MB in the end (delta: 58.6 MB). Peak memory consumption was 58.6 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