/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/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:48,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:48,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:48,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:48,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:48,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:48,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:48,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:48,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:48,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:48,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:48,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:48,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:48,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:48,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:48,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:48,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:48,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:48,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:48,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:48,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:48,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:48,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:48,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:48,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:48,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:48,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:48,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:48,638 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 16:56:48,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:48,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:48,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:48,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:48,685 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:48,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:48,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:48,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:48,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:48,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:48,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:48,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:48,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:48,690 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:48,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:48,691 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:48,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:48,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:48,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:48,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:48,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:48,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:48,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:48,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:48,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:48,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:48,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:48,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:48,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:48,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:49,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:49,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:49,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:49,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:49,025 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:49,026 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-22 16:56:49,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b88e7c97d/cb565d3e6ba7457ca6921fc75b4d7117/FLAG87dbc6387 [2020-08-22 16:56:49,580 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:49,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-22 16:56:49,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b88e7c97d/cb565d3e6ba7457ca6921fc75b4d7117/FLAG87dbc6387 [2020-08-22 16:56:49,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b88e7c97d/cb565d3e6ba7457ca6921fc75b4d7117 [2020-08-22 16:56:49,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:49,940 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:49,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:49,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:49,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:49,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:49" (1/1) ... [2020-08-22 16:56:49,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb59baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:49, skipping insertion in model container [2020-08-22 16:56:49,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:49" (1/1) ... [2020-08-22 16:56:49,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:49,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:50,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:50,208 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:50,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:50,322 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:50,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50 WrapperNode [2020-08-22 16:56:50,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:50,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:50,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:50,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:50,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50" (1/1) ... [2020-08-22 16:56:50,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50" (1/1) ... [2020-08-22 16:56:50,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50" (1/1) ... [2020-08-22 16:56:50,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50" (1/1) ... [2020-08-22 16:56:50,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50" (1/1) ... [2020-08-22 16:56:50,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50" (1/1) ... [2020-08-22 16:56:50,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50" (1/1) ... [2020-08-22 16:56:50,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:50,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:50,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:50,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:50,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50" (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 16:56:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:56:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:50,735 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:50,735 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 16:56:50,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:50 BoogieIcfgContainer [2020-08-22 16:56:50,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:50,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:50,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:50,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:50,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:49" (1/3) ... [2020-08-22 16:56:50,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d4011c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:50, skipping insertion in model container [2020-08-22 16:56:50,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:50" (2/3) ... [2020-08-22 16:56:50,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d4011c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:50, skipping insertion in model container [2020-08-22 16:56:50,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:50" (3/3) ... [2020-08-22 16:56:50,748 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-08-22 16:56:50,759 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:50,766 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:50,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:50,806 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:50,806 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:50,806 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:50,806 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:50,807 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:50,807 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:50,807 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:50,807 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 16:56:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 16:56:50,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:50,837 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] [2020-08-22 16:56:50,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:50,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-22 16:56:50,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:50,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456942678] [2020-08-22 16:56:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:51,065 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 16:56:51,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456942678] [2020-08-22 16:56:51,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:51,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:51,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848201583] [2020-08-22 16:56:51,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:51,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:51,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:51,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:51,087 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-22 16:56:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:51,239 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-22 16:56:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:51,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-22 16:56:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:51,251 INFO L225 Difference]: With dead ends: 76 [2020-08-22 16:56:51,251 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 16:56:51,255 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 16:56:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 16:56:51,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-22 16:56:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 16:56:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-22 16:56:51,300 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-22 16:56:51,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:51,301 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-22 16:56:51,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-22 16:56:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 16:56:51,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:51,303 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] [2020-08-22 16:56:51,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:51,304 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:51,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:51,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-22 16:56:51,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:51,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630839622] [2020-08-22 16:56:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:51,455 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 16:56:51,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630839622] [2020-08-22 16:56:51,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:51,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:56:51,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137121548] [2020-08-22 16:56:51,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:51,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:51,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:51,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:51,459 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-22 16:56:51,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:51,647 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-22 16:56:51,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:51,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-22 16:56:51,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:51,651 INFO L225 Difference]: With dead ends: 75 [2020-08-22 16:56:51,651 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 16:56:51,653 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 16:56:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 16:56:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-22 16:56:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 16:56:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-22 16:56:51,669 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-22 16:56:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:51,670 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-22 16:56:51,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:51,670 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-22 16:56:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 16:56:51,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:51,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:51,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:56:51,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:51,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:51,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-22 16:56:51,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:51,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366240127] [2020-08-22 16:56:51,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:51,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:51,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:51,883 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:51,883 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:51,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:56:51,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:51 BoogieIcfgContainer [2020-08-22 16:56:51,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:51,969 INFO L168 Benchmark]: Toolchain (without parser) took 2028.55 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 102.6 MB in the beginning and 200.2 MB in the end (delta: -97.6 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:51,970 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:51,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.24 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 180.2 MB in the end (delta: -77.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:51,972 INFO L168 Benchmark]: Boogie Preprocessor took 40.66 ms. Allocated memory is still 201.3 MB. Free memory was 180.2 MB in the beginning and 178.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:51,973 INFO L168 Benchmark]: RCFGBuilder took 375.90 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 157.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:51,974 INFO L168 Benchmark]: TraceAbstraction took 1225.38 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 157.3 MB in the beginning and 200.2 MB in the end (delta: -43.0 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:51,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.24 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 180.2 MB in the end (delta: -77.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.66 ms. Allocated memory is still 201.3 MB. Free memory was 180.2 MB in the beginning and 178.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 375.90 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 157.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1225.38 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 157.3 MB in the beginning and 200.2 MB in the end (delta: -43.0 MB). Peak memory consumption was 78.2 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] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={4:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={4:0}, N=1, sum={6:0}] [L31] COND TRUE i