/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/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:32:38,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:32:38,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:32:38,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:32:38,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:32:38,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:32:38,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:32:38,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:32:38,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:32:38,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:32:38,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:32:38,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:32:38,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:32:38,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:32:38,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:32:38,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:32:38,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:32:38,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:32:38,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:32:38,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:32:38,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:32:38,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:32:38,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:32:38,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:32:38,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 11:32:38,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 11:32:38,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 11:32:38,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 11:32:38,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 11:32:38,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 11:32:38,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:32:38,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:32:38,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:32:38,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:32:38,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:32:38,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:32:38,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:32:38,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:32:38,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:32:38,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:32:38,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:32:38,502 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 11:32:38,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:32:38,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:32:38,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:32:38,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:32:38,520 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:32:38,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:32:38,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:32:38,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:32:38,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:32:38,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:32:38,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:32:38,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:32:38,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:32:38,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:32:38,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:32:38,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:32:38,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:32:38,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:32:38,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:32:38,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:32:38,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:32:38,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:38,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:32:38,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:32:38,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:32:38,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:32:38,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:32:38,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:32:38,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:32:38,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:32:38,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:32:38,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:32:38,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:32:38,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:32:38,855 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:32:38,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-07-07 11:32:38,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/790ea07fe/d8abfa98208948f59805bd6f3faa0aee/FLAG0d95a9687 [2020-07-07 11:32:39,424 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:32:39,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c [2020-07-07 11:32:39,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/790ea07fe/d8abfa98208948f59805bd6f3faa0aee/FLAG0d95a9687 [2020-07-07 11:32:39,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/790ea07fe/d8abfa98208948f59805bd6f3faa0aee [2020-07-07 11:32:39,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:32:39,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:32:39,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:39,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:32:39,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:32:39,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:39" (1/1) ... [2020-07-07 11:32:39,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3523fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:39, skipping insertion in model container [2020-07-07 11:32:39,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:39" (1/1) ... [2020-07-07 11:32:39,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:32:39,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:32:40,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:40,019 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:32:40,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:40,068 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:32:40,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40 WrapperNode [2020-07-07 11:32:40,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:40,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:32:40,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:32:40,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:32:40,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40" (1/1) ... [2020-07-07 11:32:40,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40" (1/1) ... [2020-07-07 11:32:40,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40" (1/1) ... [2020-07-07 11:32:40,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40" (1/1) ... [2020-07-07 11:32:40,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40" (1/1) ... [2020-07-07 11:32:40,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40" (1/1) ... [2020-07-07 11:32:40,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40" (1/1) ... [2020-07-07 11:32:40,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:32:40,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:32:40,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:32:40,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:32:40,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40" (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 11:32:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:32:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:32:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:32:40,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:32:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:32:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:32:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:32:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:32:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:32:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:32:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:32:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:32:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:32:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:32:40,548 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:32:40,548 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:32:40,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:40 BoogieIcfgContainer [2020-07-07 11:32:40,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:32:40,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:32:40,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:32:40,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:32:40,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:32:39" (1/3) ... [2020-07-07 11:32:40,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677fdf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:40, skipping insertion in model container [2020-07-07 11:32:40,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:40" (2/3) ... [2020-07-07 11:32:40,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677fdf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:40, skipping insertion in model container [2020-07-07 11:32:40,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:40" (3/3) ... [2020-07-07 11:32:40,592 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-07-07 11:32:40,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:32:40,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:32:40,638 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:32:40,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:32:40,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:32:40,677 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:32:40,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:32:40,678 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:32:40,678 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:32:40,678 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:32:40,678 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:32:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-07 11:32:40,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 11:32:40,704 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:40,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:40,706 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2020-07-07 11:32:40,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:40,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681858503] [2020-07-07 11:32:40,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:40,926 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 11:32:40,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681858503] [2020-07-07 11:32:40,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:40,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:32:40,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367710132] [2020-07-07 11:32:40,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:32:40,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:40,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:32:40,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:40,951 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-07-07 11:32:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:41,088 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-07 11:32:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:32:41,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-07 11:32:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:41,111 INFO L225 Difference]: With dead ends: 35 [2020-07-07 11:32:41,112 INFO L226 Difference]: Without dead ends: 15 [2020-07-07 11:32:41,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:32:41,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-07 11:32:41,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-07 11:32:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-07 11:32:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-07 11:32:41,185 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-07 11:32:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:41,186 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-07 11:32:41,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:32:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-07 11:32:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 11:32:41,187 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:41,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:41,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:32:41,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:41,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:41,189 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2020-07-07 11:32:41,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:41,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721752722] [2020-07-07 11:32:41,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:41,364 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 11:32:41,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721752722] [2020-07-07 11:32:41,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:41,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:32:41,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850867365] [2020-07-07 11:32:41,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:32:41,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:41,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:32:41,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:32:41,369 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-07-07 11:32:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:41,439 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-07-07 11:32:41,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:32:41,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-07 11:32:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:41,441 INFO L225 Difference]: With dead ends: 24 [2020-07-07 11:32:41,442 INFO L226 Difference]: Without dead ends: 18 [2020-07-07 11:32:41,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:32:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-07 11:32:41,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-07-07 11:32:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-07 11:32:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-07-07 11:32:41,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-07-07 11:32:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:41,451 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-07-07 11:32:41,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:32:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-07 11:32:41,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 11:32:41,453 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:41,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:41,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:32:41,454 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:41,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2020-07-07 11:32:41,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:41,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59433600] [2020-07-07 11:32:41,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:41,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59433600] [2020-07-07 11:32:41,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640453815] [2020-07-07 11:32:41,960 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 [2020-07-07 11:32:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:42,031 INFO L264 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-07 11:32:42,038 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:32:42,180 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-07-07 11:32:42,185 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:32:42,211 INFO L624 ElimStorePlain]: treesize reduction 36, result has 34.5 percent of original size [2020-07-07 11:32:42,212 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_7| vanished before elimination [2020-07-07 11:32:42,213 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:32:42,213 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2020-07-07 11:32:42,241 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:32:42,353 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:32:42,353 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2020-07-07 11:32:42,359 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:32:42,366 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:32:42,369 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-07 11:32:42,390 INFO L624 ElimStorePlain]: treesize reduction 16, result has 36.0 percent of original size [2020-07-07 11:32:42,394 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:32:42,395 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:3 [2020-07-07 11:32:42,417 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:32:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:42,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:32:42,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-07-07 11:32:42,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10924558] [2020-07-07 11:32:42,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 11:32:42,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:42,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 11:32:42,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-07-07 11:32:42,462 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 15 states. [2020-07-07 11:32:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:42,803 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-07-07 11:32:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 11:32:42,804 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2020-07-07 11:32:42,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:42,805 INFO L225 Difference]: With dead ends: 27 [2020-07-07 11:32:42,805 INFO L226 Difference]: Without dead ends: 21 [2020-07-07 11:32:42,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-07-07 11:32:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-07 11:32:42,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2020-07-07 11:32:42,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-07 11:32:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-07-07 11:32:42,815 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2020-07-07 11:32:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:42,815 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-07-07 11:32:42,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 11:32:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-07 11:32:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 11:32:42,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:42,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:32:43,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 11:32:43,018 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:43,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1573562706, now seen corresponding path program 1 times [2020-07-07 11:32:43,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:43,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415729026] [2020-07-07 11:32:43,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:43,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415729026] [2020-07-07 11:32:43,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870495849] [2020-07-07 11:32:43,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:43,458 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-07 11:32:43,461 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:32:43,498 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:32:43,499 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:32:43,506 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-07 11:32:43,531 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-07 11:32:43,532 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:32:43,538 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-07 11:32:43,538 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:32:43,571 INFO L624 ElimStorePlain]: treesize reduction 59, result has 37.9 percent of original size [2020-07-07 11:32:43,578 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-07-07 11:32:43,579 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-07 11:32:43,594 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:32:43,595 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:32:43,596 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:193, output treesize:19 [2020-07-07 11:32:43,669 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-07 11:32:43,670 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:32:43,672 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:32:43,673 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:32:43,673 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-07-07 11:32:43,675 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:32:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:43,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:32:43,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2020-07-07 11:32:43,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086598671] [2020-07-07 11:32:43,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 11:32:43,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:43,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 11:32:43,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:32:43,713 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2020-07-07 11:32:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:44,001 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-07 11:32:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 11:32:44,001 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-07 11:32:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:44,002 INFO L225 Difference]: With dead ends: 21 [2020-07-07 11:32:44,002 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:32:44,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-07-07 11:32:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:32:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:32:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:32:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:32:44,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-07 11:32:44,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:44,004 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:32:44,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 11:32:44,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:32:44,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:32:44,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:44,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:32:44,352 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:32:44,352 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-07 11:32:44,353 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:32:44,353 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:32:44,353 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:32:44,353 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:32:44,353 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:32:44,354 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-07 11:32:44,354 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (.cse2 (= 1 main_~SIZE~0))) (or (let ((.cse0 (+ main_~menor~0 1))) (and (<= .cse0 .cse1) .cse2 (<= .cse0 |main_#t~mem5|))) (and (= |main_#t~mem5| main_~menor~0) (= main_~menor~0 .cse1) .cse2))) [2020-07-07 11:32:44,354 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-07-07 11:32:44,354 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-07-07 11:32:44,354 INFO L268 CegarLoopResult]: For program point L22(lines 22 23) no Hoare annotation was computed. [2020-07-07 11:32:44,355 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2020-07-07 11:32:44,355 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 24) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (.cse1 (= 1 main_~SIZE~0))) (or (and (<= (+ main_~menor~0 1) .cse0) .cse1) (and (= main_~menor~0 .cse0) .cse1) (and (= (* (div main_~j~0 4294967296) 17179869184) (+ (* main_~j~0 4) |main_~#array~0.offset|)) .cse1 (= 0 main_~j~0)))) [2020-07-07 11:32:44,355 INFO L268 CegarLoopResult]: For program point L19-4(lines 19 24) no Hoare annotation was computed. [2020-07-07 11:32:44,356 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-07-07 11:32:44,359 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-07 11:32:44,359 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-07 11:32:44,359 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-07 11:32:44,360 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-07 11:32:44,360 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-07 11:32:44,363 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-07 11:32:44,378 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:32:44,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:32:44,388 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:32:44,389 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:32:44,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:32:44 BoogieIcfgContainer [2020-07-07 11:32:44,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:32:44,411 INFO L168 Benchmark]: Toolchain (without parser) took 4645.08 ms. Allocated memory was 144.2 MB in the beginning and 248.5 MB in the end (delta: 104.3 MB). Free memory was 100.8 MB in the beginning and 164.2 MB in the end (delta: -63.4 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:44,416 INFO L168 Benchmark]: CDTParser took 1.78 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. [2020-07-07 11:32:44,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.97 ms. Allocated memory is still 144.2 MB. Free memory was 100.6 MB in the beginning and 90.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:44,419 INFO L168 Benchmark]: Boogie Preprocessor took 131.34 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 90.5 MB in the beginning and 180.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:44,421 INFO L168 Benchmark]: RCFGBuilder took 364.93 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 166.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:44,422 INFO L168 Benchmark]: TraceAbstraction took 3836.76 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 165.6 MB in the beginning and 164.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:44,430 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.78 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 301.97 ms. Allocated memory is still 144.2 MB. Free memory was 100.6 MB in the beginning and 90.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.34 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 90.5 MB in the beginning and 180.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.93 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 166.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3836.76 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 165.6 MB in the beginning and 164.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2020-07-07 11:32:44,449 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:32:44,449 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:32:44,450 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:32:44,457 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((menor + 1 <= unknown-#memory_int-unknown[array][array] && 1 == SIZE) || (menor == unknown-#memory_int-unknown[array][array] && 1 == SIZE)) || ((j / 4294967296 * 17179869184 == j * 4 + array && 1 == SIZE) && 0 == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 44 SDslu, 94 SDs, 0 SdLazy, 231 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 92 HoareAnnotationTreeSize, 10 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 73 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 4 QuantifiedInterpolants, 6057 SizeOfPredicates, 14 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...