/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/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:14:35,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:14:35,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:14:35,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:14:35,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:14:35,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:14:35,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:14:35,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:14:35,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:14:35,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:14:35,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:14:35,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:14:35,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:14:35,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:14:35,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:14:35,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:14:35,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:14:35,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:14:35,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:14:35,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:14:35,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:14:35,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:14:35,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:14:35,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:14:35,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:14:35,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:14:35,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:14:35,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:14:35,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:14:35,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:14:35,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:14:35,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:14:35,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:14:35,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:14:35,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:14:35,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:14:35,081 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 12:14:35,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:14:35,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:14:35,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:14:35,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:14:35,099 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:14:35,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:14:35,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:14:35,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:14:35,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:14:35,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:14:35,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:14:35,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:14:35,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:14:35,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:14:35,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:14:35,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:14:35,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:14:35,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:14:35,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:14:35,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:14:35,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:14:35,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:14:35,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:14:35,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:14:35,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:14:35,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:14:35,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:14:35,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:14:35,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:14:35,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:14:35,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:14:35,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:14:35,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:14:35,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:14:35,394 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:14:35,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c [2020-07-17 12:14:35,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e810a29/8d81531250d5432c9eb62c9259a70f48/FLAG76fa9bee5 [2020-07-17 12:14:35,914 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:14:35,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn4f.c [2020-07-17 12:14:35,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e810a29/8d81531250d5432c9eb62c9259a70f48/FLAG76fa9bee5 [2020-07-17 12:14:36,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e810a29/8d81531250d5432c9eb62c9259a70f48 [2020-07-17 12:14:36,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:14:36,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:14:36,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:14:36,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:14:36,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:14:36,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7467a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36, skipping insertion in model container [2020-07-17 12:14:36,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:14:36,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:14:36,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:14:36,529 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:14:36,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:14:36,567 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:14:36,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36 WrapperNode [2020-07-17 12:14:36,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:14:36,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:14:36,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:14:36,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:14:36,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (1/1) ... [2020-07-17 12:14:36,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:14:36,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:14:36,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:14:36,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:14:36,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (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 12:14:36,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:14:36,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:14:36,764 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:14:36,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:14:36,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:14:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:14:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:14:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:14:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:14:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:14:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:14:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:14:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 12:14:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:14:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:14:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:14:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:14:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:14:37,092 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:14:37,093 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 12:14:37,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:14:37 BoogieIcfgContainer [2020-07-17 12:14:37,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:14:37,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:14:37,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:14:37,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:14:37,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:14:36" (1/3) ... [2020-07-17 12:14:37,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c45409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:14:37, skipping insertion in model container [2020-07-17 12:14:37,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:14:36" (2/3) ... [2020-07-17 12:14:37,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c45409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:14:37, skipping insertion in model container [2020-07-17 12:14:37,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:14:37" (3/3) ... [2020-07-17 12:14:37,113 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2020-07-17 12:14:37,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:14:37,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:14:37,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:14:37,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:14:37,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:14:37,175 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:14:37,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:14:37,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:14:37,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:14:37,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:14:37,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:14:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-17 12:14:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 12:14:37,200 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:14:37,201 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] [2020-07-17 12:14:37,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:14:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:14:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-17 12:14:37,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:14:37,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365323427] [2020-07-17 12:14:37,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:14:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:14:37,445 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 12:14:37,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365323427] [2020-07-17 12:14:37,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:14:37,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:14:37,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398330496] [2020-07-17 12:14:37,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:14:37,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:14:37,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:14:37,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:14:37,469 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-17 12:14:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:14:37,573 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-17 12:14:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:14:37,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-17 12:14:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:14:37,585 INFO L225 Difference]: With dead ends: 58 [2020-07-17 12:14:37,585 INFO L226 Difference]: Without dead ends: 29 [2020-07-17 12:14:37,589 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 12:14:37,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-17 12:14:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-17 12:14:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-17 12:14:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-17 12:14:37,634 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-17 12:14:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:14:37,634 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-17 12:14:37,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:14:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-17 12:14:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 12:14:37,636 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:14:37,636 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] [2020-07-17 12:14:37,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:14:37,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:14:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:14:37,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-17 12:14:37,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:14:37,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708115465] [2020-07-17 12:14:37,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:14:37,665 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:14:37,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611365760] [2020-07-17 12:14:37,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:14:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:14:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:14:37,778 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:14:37,778 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:14:37,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:14:38,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:14:38 BoogieIcfgContainer [2020-07-17 12:14:38,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:14:38,036 INFO L168 Benchmark]: Toolchain (without parser) took 1717.29 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 100.9 MB in the beginning and 118.4 MB in the end (delta: -17.5 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:38,037 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:14:38,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.27 ms. Allocated memory is still 144.2 MB. Free memory was 100.5 MB in the beginning and 90.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:38,039 INFO L168 Benchmark]: Boogie Preprocessor took 124.60 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.1 MB in the beginning and 179.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:38,040 INFO L168 Benchmark]: RCFGBuilder took 404.79 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 161.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:38,041 INFO L168 Benchmark]: TraceAbstraction took 929.08 ms. Allocated memory is still 201.3 MB. Free memory was 161.6 MB in the beginning and 118.4 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:14:38,047 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.27 ms. Allocated memory is still 144.2 MB. Free memory was 100.5 MB in the beginning and 90.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.60 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.1 MB in the beginning and 179.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.79 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 161.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 929.08 ms. Allocated memory is still 201.3 MB. Free memory was 161.6 MB in the beginning and 118.4 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 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)=3, 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[0] = 0 [L31] i=1 VAL [\old(N)=0, a={-1:0}, b={1:0}, i=1, malloc(sizeof(long long)*N)={1:0}, malloc(sizeof(long long)*N)={-1:0}, N=1] [L31] COND FALSE !(i