/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:44:31,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:44:31,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:44:31,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:44:31,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:44:31,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:44:31,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:44:31,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:44:31,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:44:31,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:44:31,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:44:31,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:44:31,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:44:31,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:44:31,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:44:31,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:44:31,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:44:31,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:44:31,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:44:31,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:44:31,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:44:31,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:44:31,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:44:31,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:44:31,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 21:44:31,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 21:44:31,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 21:44:31,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 21:44:31,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 21:44:31,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 21:44:31,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:44:31,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:44:31,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:44:31,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:44:31,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:44:31,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:44:31,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:44:31,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:44:31,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:44:31,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:44:31,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:44:31,690 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 [2020-07-19 21:44:31,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:44:31,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:44:31,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:44:31,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:44:31,727 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:44:31,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:44:31,728 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:44:31,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:44:31,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:44:31,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:44:31,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:44:31,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:44:31,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:44:31,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:44:31,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:44:31,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:44:31,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:44:31,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:44:31,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:44:31,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:44:31,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:44:31,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:44:31,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:44:31,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:44:31,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:44:31,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:44:31,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:44:31,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:44:31,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:44:31,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:44:32,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:44:32,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:44:32,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:44:32,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:44:32,108 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:44:32,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2020-07-19 21:44:32,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3e77510/e2a9bdbbc4594e20bcdaddac0fa997e1/FLAGe20315f67 [2020-07-19 21:44:32,789 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:44:32,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c [2020-07-19 21:44:32,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3e77510/e2a9bdbbc4594e20bcdaddac0fa997e1/FLAGe20315f67 [2020-07-19 21:44:33,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3e77510/e2a9bdbbc4594e20bcdaddac0fa997e1 [2020-07-19 21:44:33,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:44:33,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:44:33,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:44:33,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:44:33,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:44:33,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:44:33" (1/1) ... [2020-07-19 21:44:33,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b5475b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33, skipping insertion in model container [2020-07-19 21:44:33,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:44:33" (1/1) ... [2020-07-19 21:44:33,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:44:33,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:44:33,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:44:33,413 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:44:33,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:44:33,456 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:44:33,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33 WrapperNode [2020-07-19 21:44:33,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:44:33,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:44:33,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:44:33,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:44:33,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33" (1/1) ... [2020-07-19 21:44:33,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33" (1/1) ... [2020-07-19 21:44:33,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33" (1/1) ... [2020-07-19 21:44:33,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33" (1/1) ... [2020-07-19 21:44:33,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33" (1/1) ... [2020-07-19 21:44:33,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33" (1/1) ... [2020-07-19 21:44:33,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33" (1/1) ... [2020-07-19 21:44:33,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:44:33,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:44:33,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:44:33,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:44:33,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33" (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 [2020-07-19 21:44:33,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:44:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:44:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:44:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:44:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:44:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:44:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:44:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:44:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:44:33,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:44:33,698 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:44:33,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:44:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:44:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:44:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:44:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:44:33,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:44:33,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:44:33,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:44:34,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:44:34,033 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-19 21:44:34,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:44:34 BoogieIcfgContainer [2020-07-19 21:44:34,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:44:34,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:44:34,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:44:34,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:44:34,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:44:33" (1/3) ... [2020-07-19 21:44:34,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6444ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:44:34, skipping insertion in model container [2020-07-19 21:44:34,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:33" (2/3) ... [2020-07-19 21:44:34,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6444ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:44:34, skipping insertion in model container [2020-07-19 21:44:34,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:44:34" (3/3) ... [2020-07-19 21:44:34,050 INFO L109 eAbstractionObserver]: Analyzing ICFG brs1f.c [2020-07-19 21:44:34,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:44:34,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:44:34,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:44:34,125 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:44:34,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:44:34,125 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:44:34,125 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:44:34,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:44:34,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:44:34,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:44:34,126 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:44:34,149 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-19 21:44:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:44:34,156 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:44:34,158 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] [2020-07-19 21:44:34,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:44:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:44:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-07-19 21:44:34,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:44:34,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814829333] [2020-07-19 21:44:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f42f4e4 [2020-07-19 21:44:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:44:34,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814829333] [2020-07-19 21:44:34,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:44:34,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:44:34,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453817544] [2020-07-19 21:44:34,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:44:34,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:44:34,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:44:34,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:44:34,451 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-07-19 21:44:34,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:44:34,607 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-19 21:44:34,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:44:34,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-19 21:44:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:44:34,621 INFO L225 Difference]: With dead ends: 56 [2020-07-19 21:44:34,622 INFO L226 Difference]: Without dead ends: 26 [2020-07-19 21:44:34,627 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 [2020-07-19 21:44:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-19 21:44:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-19 21:44:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-19 21:44:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-07-19 21:44:34,683 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2020-07-19 21:44:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:44:34,683 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-07-19 21:44:34,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:44:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-07-19 21:44:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:44:34,685 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:44:34,685 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] [2020-07-19 21:44:34,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:44:34,686 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:44:34,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:44:34,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-07-19 21:44:34,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:44:34,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888551969] [2020-07-19 21:44:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f42f4e4 [2020-07-19 21:44:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:44:34,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888551969] [2020-07-19 21:44:34,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:44:34,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:44:34,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273582936] [2020-07-19 21:44:34,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:44:34,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:44:34,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:44:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:44:34,842 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-07-19 21:44:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:44:34,992 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-07-19 21:44:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:44:34,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-19 21:44:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:44:34,995 INFO L225 Difference]: With dead ends: 42 [2020-07-19 21:44:34,995 INFO L226 Difference]: Without dead ends: 32 [2020-07-19 21:44:34,997 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 [2020-07-19 21:44:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-19 21:44:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-07-19 21:44:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 21:44:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-19 21:44:35,007 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2020-07-19 21:44:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:44:35,008 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-19 21:44:35,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:44:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-19 21:44:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 21:44:35,009 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:44:35,009 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] [2020-07-19 21:44:35,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:44:35,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:44:35,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:44:35,011 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-07-19 21:44:35,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:44:35,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49374951] [2020-07-19 21:44:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f42f4e4 [2020-07-19 21:44:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:44:35,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:44:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:44:35,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:44:35,153 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:44:35,154 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:44:35,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:44:35,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:44:35 BoogieIcfgContainer [2020-07-19 21:44:35,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:44:35,208 INFO L168 Benchmark]: Toolchain (without parser) took 2066.57 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 107.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:35,210 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:44:35,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.02 ms. Allocated memory is still 144.7 MB. Free memory was 101.0 MB in the beginning and 90.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:35,212 INFO L168 Benchmark]: Boogie Preprocessor took 161.82 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 90.6 MB in the beginning and 179.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:35,214 INFO L168 Benchmark]: RCFGBuilder took 418.93 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 163.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:35,215 INFO L168 Benchmark]: TraceAbstraction took 1160.54 ms. Allocated memory is still 201.9 MB. Free memory was 162.3 MB in the beginning and 107.0 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:35,219 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.02 ms. Allocated memory is still 144.7 MB. Free memory was 101.0 MB in the beginning and 90.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.82 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 90.6 MB in the beginning and 179.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.93 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 163.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1160.54 ms. Allocated memory is still 201.9 MB. Free memory was 162.3 MB in the beginning and 107.0 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 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)=12, 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] 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