/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/s12iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:15:07,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:15:07,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:15:07,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:15:07,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:15:07,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:15:07,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:15:07,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:15:07,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:15:07,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:15:07,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:15:07,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:15:07,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:15:07,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:15:07,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:15:07,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:15:07,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:15:07,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:15:07,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:15:07,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:15:07,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:15:07,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:15:07,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:15:07,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:15:07,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:15:07,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:15:07,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:15:07,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:15:07,761 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 [2020-07-17 12:15:07,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:15:07,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:15:07,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:15:07,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:15:07,806 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:15:07,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:15:07,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:15:07,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:15:07,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:15:07,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:15:07,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:15:07,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:15:07,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:15:07,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:15:07,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:15:07,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:15:07,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:15:07,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:15:07,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:15:07,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:15:07,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:15:07,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:15:07,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:15:07,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:15:07,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:15:07,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:15:07,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:15:07,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:15:07,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:15:07,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:15:08,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:15:08,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:15:08,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:15:08,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:15:08,113 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:15:08,114 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12iff.c [2020-07-17 12:15:08,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60e5bb58/95b82493e03b4d2890ee94a244d17f5d/FLAG2572718c4 [2020-07-17 12:15:08,693 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:15:08,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s12iff.c [2020-07-17 12:15:08,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60e5bb58/95b82493e03b4d2890ee94a244d17f5d/FLAG2572718c4 [2020-07-17 12:15:09,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60e5bb58/95b82493e03b4d2890ee94a244d17f5d [2020-07-17 12:15:09,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:15:09,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:15:09,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:15:09,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:15:09,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:15:09,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:15:09" (1/1) ... [2020-07-17 12:15:09,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6f76f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09, skipping insertion in model container [2020-07-17 12:15:09,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:15:09" (1/1) ... [2020-07-17 12:15:09,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:15:09,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:15:09,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:15:09,301 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:15:09,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:15:09,421 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:15:09,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09 WrapperNode [2020-07-17 12:15:09,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:15:09,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:15:09,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:15:09,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:15:09,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09" (1/1) ... [2020-07-17 12:15:09,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09" (1/1) ... [2020-07-17 12:15:09,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09" (1/1) ... [2020-07-17 12:15:09,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09" (1/1) ... [2020-07-17 12:15:09,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09" (1/1) ... [2020-07-17 12:15:09,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09" (1/1) ... [2020-07-17 12:15:09,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09" (1/1) ... [2020-07-17 12:15:09,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:15:09,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:15:09,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:15:09,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:15:09,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09" (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 [2020-07-17 12:15:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:15:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:15:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:15:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:15:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:15:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:15:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:15:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:15:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:15:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:15:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:15:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:15:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 12:15:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 12:15:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:15:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:15:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:15:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:15:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:15:09,820 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:15:09,821 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 12:15:09,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:15:09 BoogieIcfgContainer [2020-07-17 12:15:09,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:15:09,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:15:09,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:15:09,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:15:09,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:15:09" (1/3) ... [2020-07-17 12:15:09,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2ea8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:15:09, skipping insertion in model container [2020-07-17 12:15:09,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:09" (2/3) ... [2020-07-17 12:15:09,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2ea8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:15:09, skipping insertion in model container [2020-07-17 12:15:09,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:15:09" (3/3) ... [2020-07-17 12:15:09,838 INFO L109 eAbstractionObserver]: Analyzing ICFG s12iff.c [2020-07-17 12:15:09,851 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:15:09,860 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:15:09,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:15:09,917 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:15:09,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:15:09,917 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:15:09,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:15:09,917 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:15:09,918 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:15:09,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:15:09,918 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:15:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-17 12:15:09,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 12:15:09,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:09,952 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] [2020-07-17 12:15:09,952 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:09,958 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-07-17 12:15:09,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:09,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528898] [2020-07-17 12:15:09,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:10,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528898] [2020-07-17 12:15:10,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:15:10,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:15:10,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717373338] [2020-07-17 12:15:10,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:15:10,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:15:10,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:15:10,196 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-07-17 12:15:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:10,354 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-07-17 12:15:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:15:10,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-17 12:15:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:10,371 INFO L225 Difference]: With dead ends: 62 [2020-07-17 12:15:10,371 INFO L226 Difference]: Without dead ends: 29 [2020-07-17 12:15:10,379 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 [2020-07-17 12:15:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-17 12:15:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-17 12:15:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-17 12:15:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-07-17 12:15:10,430 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-07-17 12:15:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:10,430 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-07-17 12:15:10,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:15:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-07-17 12:15:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 12:15:10,432 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:10,432 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] [2020-07-17 12:15:10,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:15:10,433 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:10,433 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-07-17 12:15:10,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:10,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520436234] [2020-07-17 12:15:10,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:10,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520436234] [2020-07-17 12:15:10,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:15:10,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:15:10,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768521912] [2020-07-17 12:15:10,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:15:10,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:10,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:15:10,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:15:10,568 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-07-17 12:15:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:10,699 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-07-17 12:15:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:15:10,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-17 12:15:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:10,701 INFO L225 Difference]: With dead ends: 51 [2020-07-17 12:15:10,701 INFO L226 Difference]: Without dead ends: 37 [2020-07-17 12:15:10,702 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 [2020-07-17 12:15:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-17 12:15:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-07-17 12:15:10,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 12:15:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-17 12:15:10,713 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-07-17 12:15:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:10,713 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-17 12:15:10,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:15:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-17 12:15:10,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 12:15:10,715 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:10,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:10,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:15:10,715 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:10,716 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-07-17 12:15:10,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:10,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008087036] [2020-07-17 12:15:10,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:15:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:15:10,825 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:15:10,825 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:15:10,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:15:10,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:15:10 BoogieIcfgContainer [2020-07-17 12:15:10,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:15:10,873 INFO L168 Benchmark]: Toolchain (without parser) took 1782.58 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 102.0 MB in the beginning and 101.0 MB in the end (delta: 960.6 kB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:10,874 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 12:15:10,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.78 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.5 MB in the beginning and 182.4 MB in the end (delta: -80.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:10,877 INFO L168 Benchmark]: Boogie Preprocessor took 42.67 ms. Allocated memory is still 203.4 MB. Free memory was 182.4 MB in the beginning and 180.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:10,879 INFO L168 Benchmark]: RCFGBuilder took 361.67 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 161.9 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:10,882 INFO L168 Benchmark]: TraceAbstraction took 1040.88 ms. Allocated memory is still 203.4 MB. Free memory was 161.3 MB in the beginning and 101.0 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:10,889 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.78 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.5 MB in the beginning and 182.4 MB in the end (delta: -80.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.67 ms. Allocated memory is still 203.4 MB. Free memory was 182.4 MB in the beginning and 180.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.67 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 161.9 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1040.88 ms. Allocated memory is still 203.4 MB. Free memory was 161.3 MB in the beginning and 101.0 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}] [L30] COND TRUE i