/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:32:06,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:32:06,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:32:06,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:32:06,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:32:06,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:32:06,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:32:06,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:32:06,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:32:06,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:32:06,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:32:06,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:32:06,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:32:06,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:32:06,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:32:06,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:32:06,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:32:06,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:32:06,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:32:06,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:32:06,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:32:06,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:32:06,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:32:06,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:32:06,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:32:06,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:32:06,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:32:06,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:32:06,107 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 [2020-07-07 11:32:06,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:32:06,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:32:06,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:32:06,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:32:06,143 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:32:06,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:32:06,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:32:06,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:32:06,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:32:06,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:32:06,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:32:06,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:32:06,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:32:06,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:32:06,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:32:06,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:32:06,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:32:06,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:32:06,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:32:06,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:32:06,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:32:06,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:06,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:32:06,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:32:06,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:32:06,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:32:06,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:32:06,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:32:06,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:32:06,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:32:06,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:32:06,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:32:06,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:32:06,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:32:06,475 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:32:06,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2020-07-07 11:32:06,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c2791e0/1e39446011de422a851db4e5368740aa/FLAGca8b60923 [2020-07-07 11:32:07,008 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:32:07,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2020-07-07 11:32:07,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c2791e0/1e39446011de422a851db4e5368740aa/FLAGca8b60923 [2020-07-07 11:32:07,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c2791e0/1e39446011de422a851db4e5368740aa [2020-07-07 11:32:07,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:32:07,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:32:07,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:07,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:32:07,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:32:07,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:07" (1/1) ... [2020-07-07 11:32:07,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734404d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07, skipping insertion in model container [2020-07-07 11:32:07,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:07" (1/1) ... [2020-07-07 11:32:07,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:32:07,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:32:07,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:07,641 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:32:07,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:07,680 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:32:07,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07 WrapperNode [2020-07-07 11:32:07,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:07,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:32:07,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:32:07,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:32:07,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07" (1/1) ... [2020-07-07 11:32:07,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07" (1/1) ... [2020-07-07 11:32:07,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07" (1/1) ... [2020-07-07 11:32:07,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07" (1/1) ... [2020-07-07 11:32:07,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07" (1/1) ... [2020-07-07 11:32:07,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07" (1/1) ... [2020-07-07 11:32:07,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07" (1/1) ... [2020-07-07 11:32:07,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:32:07,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:32:07,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:32:07,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:32:07,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07" (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 [2020-07-07 11:32:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:32:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:32:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:32:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:32:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:32:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:32:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:32:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:32:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:32:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:32:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:32:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:32:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:32:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:32:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:32:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:32:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:32:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:32:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:32:08,194 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:32:08,194 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 11:32:08,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:08 BoogieIcfgContainer [2020-07-07 11:32:08,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:32:08,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:32:08,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:32:08,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:32:08,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:32:07" (1/3) ... [2020-07-07 11:32:08,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52203981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:08, skipping insertion in model container [2020-07-07 11:32:08,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:07" (2/3) ... [2020-07-07 11:32:08,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52203981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:08, skipping insertion in model container [2020-07-07 11:32:08,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:08" (3/3) ... [2020-07-07 11:32:08,205 INFO L109 eAbstractionObserver]: Analyzing ICFG ms1f.c [2020-07-07 11:32:08,216 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:32:08,223 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:32:08,237 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:32:08,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:32:08,260 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:32:08,261 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:32:08,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:32:08,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:32:08,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:32:08,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:32:08,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:32:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-07 11:32:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:32:08,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:08,284 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] [2020-07-07 11:32:08,285 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:08,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:08,290 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-07-07 11:32:08,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:08,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793994780] [2020-07-07 11:32:08,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:08,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793994780] [2020-07-07 11:32:08,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:08,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:32:08,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603113162] [2020-07-07 11:32:08,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:32:08,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:08,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:32:08,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:08,524 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-07-07 11:32:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:08,645 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-07-07 11:32:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:32:08,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-07 11:32:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:08,657 INFO L225 Difference]: With dead ends: 54 [2020-07-07 11:32:08,657 INFO L226 Difference]: Without dead ends: 25 [2020-07-07 11:32:08,661 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 [2020-07-07 11:32:08,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-07 11:32:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-07 11:32:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-07 11:32:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-07-07 11:32:08,696 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-07-07 11:32:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:08,697 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-07-07 11:32:08,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:32:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-07-07 11:32:08,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:32:08,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:08,699 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] [2020-07-07 11:32:08,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:32:08,699 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:08,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:08,700 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-07-07 11:32:08,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:08,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482200288] [2020-07-07 11:32:08,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:08,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482200288] [2020-07-07 11:32:08,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:08,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:32:08,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564863051] [2020-07-07 11:32:08,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:32:08,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:08,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:32:08,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:32:08,821 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-07-07 11:32:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:08,937 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-07-07 11:32:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:32:08,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-07 11:32:08,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:08,939 INFO L225 Difference]: With dead ends: 40 [2020-07-07 11:32:08,939 INFO L226 Difference]: Without dead ends: 30 [2020-07-07 11:32:08,940 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 [2020-07-07 11:32:08,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-07 11:32:08,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-07-07 11:32:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-07 11:32:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-07-07 11:32:08,949 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-07-07 11:32:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:08,949 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-07-07 11:32:08,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:32:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-07-07 11:32:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 11:32:08,950 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:08,951 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] [2020-07-07 11:32:08,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:32:08,951 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:08,952 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-07-07 11:32:08,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:08,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660776388] [2020-07-07 11:32:08,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:09,111 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:32:09,111 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:32:09,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:32:09,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:32:09 BoogieIcfgContainer [2020-07-07 11:32:09,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:32:09,153 INFO L168 Benchmark]: Toolchain (without parser) took 1743.15 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 108.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:09,154 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:32:09,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.76 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 92.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:09,156 INFO L168 Benchmark]: Boogie Preprocessor took 126.73 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 179.8 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:09,158 INFO L168 Benchmark]: RCFGBuilder took 389.24 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 163.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:09,159 INFO L168 Benchmark]: TraceAbstraction took 950.45 ms. Allocated memory is still 202.4 MB. Free memory was 162.6 MB in the beginning and 108.8 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:09,168 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 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.76 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 92.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.73 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 179.8 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.24 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 163.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 950.45 ms. Allocated memory is still 202.4 MB. Free memory was 162.6 MB in the beginning and 108.8 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 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)=6, 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] COND TRUE i