/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:34,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:34,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:34,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:46:34,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:46:34,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:46:34,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:46:34,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:46:34,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:46:34,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:46:34,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:46:34,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:46:34,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:46:34,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:46:34,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:46:34,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:46:34,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:46:34,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:46:34,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:46:34,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:46:34,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:46:34,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:46:34,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:46:34,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:46:34,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:46:34,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:34,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:34,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:34,471 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 [2020-11-06 22:46:34,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:34,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:34,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:34,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:34,528 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:34,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:34,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:34,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:34,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:34,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:34,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:34,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:34,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:34,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:34,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:34,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:34,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:34,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:34,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:34,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:34,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:34,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:34,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:34,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:34,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:34,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:34,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:34,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:34,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:34,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:34,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:34,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:34,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:34,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:34,990 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:34,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-11-06 22:46:35,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01e56badb/c6119ae6f88949038eb4308767be381c/FLAGf0e5a3878 [2020-11-06 22:46:35,776 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:35,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-11-06 22:46:35,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01e56badb/c6119ae6f88949038eb4308767be381c/FLAGf0e5a3878 [2020-11-06 22:46:36,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01e56badb/c6119ae6f88949038eb4308767be381c [2020-11-06 22:46:36,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:36,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:36,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:36,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:36,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:36,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:36" (1/1) ... [2020-11-06 22:46:36,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1661cff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36, skipping insertion in model container [2020-11-06 22:46:36,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:36" (1/1) ... [2020-11-06 22:46:36,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:36,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:36,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:36,388 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:36,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:36,490 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:36,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36 WrapperNode [2020-11-06 22:46:36,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:36,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:36,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:36,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:36,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36" (1/1) ... [2020-11-06 22:46:36,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36" (1/1) ... [2020-11-06 22:46:36,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36" (1/1) ... [2020-11-06 22:46:36,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36" (1/1) ... [2020-11-06 22:46:36,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36" (1/1) ... [2020-11-06 22:46:36,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36" (1/1) ... [2020-11-06 22:46:36,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36" (1/1) ... [2020-11-06 22:46:36,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:36,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:36,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:36,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:36,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36" (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 [2020-11-06 22:46:36,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:36,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:36,664 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:36,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-11-06 22:46:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-11-06 22:46:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 22:46:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 22:46:36,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:39,588 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:39,588 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:46:39,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:39 BoogieIcfgContainer [2020-11-06 22:46:39,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:39,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:39,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:39,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:39,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:36" (1/3) ... [2020-11-06 22:46:39,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c09f037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:39, skipping insertion in model container [2020-11-06 22:46:39,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:36" (2/3) ... [2020-11-06 22:46:39,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c09f037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:39, skipping insertion in model container [2020-11-06 22:46:39,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:39" (3/3) ... [2020-11-06 22:46:39,602 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-11-06 22:46:39,623 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:39,627 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:39,640 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:39,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:39,667 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:39,667 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:39,667 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:39,667 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:39,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:39,668 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:39,668 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-06 22:46:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:39,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:39,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:39,693 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:39,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:39,700 INFO L82 PathProgramCache]: Analyzing trace with hash 725686189, now seen corresponding path program 1 times [2020-11-06 22:46:39,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:39,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337274509] [2020-11-06 22:46:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:40,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337274509] [2020-11-06 22:46:40,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:40,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:46:40,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053153879] [2020-11-06 22:46:40,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:46:40,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:40,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:46:40,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:46:40,353 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-11-06 22:46:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:42,656 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-11-06 22:46:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:46:42,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-06 22:46:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:42,666 INFO L225 Difference]: With dead ends: 43 [2020-11-06 22:46:42,667 INFO L226 Difference]: Without dead ends: 22 [2020-11-06 22:46:42,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:46:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-06 22:46:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-11-06 22:46:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-06 22:46:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-06 22:46:42,721 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-11-06 22:46:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:42,722 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-06 22:46:42,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:46:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-06 22:46:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:46:42,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:42,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:42,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:42,724 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:42,725 INFO L82 PathProgramCache]: Analyzing trace with hash 926635520, now seen corresponding path program 1 times [2020-11-06 22:46:42,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:42,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637973458] [2020-11-06 22:46:42,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:42,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:42,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637973458] [2020-11-06 22:46:42,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615842384] [2020-11-06 22:46:42,971 INFO L95 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 [2020-11-06 22:46:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:43,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:46:43,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:43,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:43,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-11-06 22:46:43,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166687265] [2020-11-06 22:46:43,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:46:43,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:43,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:46:43,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:46:43,222 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-11-06 22:46:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:47,518 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-06 22:46:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:46:47,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-06 22:46:47,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:47,521 INFO L225 Difference]: With dead ends: 31 [2020-11-06 22:46:47,521 INFO L226 Difference]: Without dead ends: 27 [2020-11-06 22:46:47,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:46:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-06 22:46:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-11-06 22:46:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-06 22:46:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-06 22:46:47,536 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 18 [2020-11-06 22:46:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:47,537 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-06 22:46:47,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:46:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-06 22:46:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:46:47,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:47,538 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:47,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:46:47,752 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:47,754 INFO L82 PathProgramCache]: Analyzing trace with hash -241560691, now seen corresponding path program 2 times [2020-11-06 22:46:47,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:47,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088974010] [2020-11-06 22:46:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:47,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:47,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088974010] [2020-11-06 22:46:47,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435052296] [2020-11-06 22:46:47,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-06 22:46:54,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:46:54,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:46:54,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-06 22:46:54,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:54,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:54,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-11-06 22:46:54,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043517585] [2020-11-06 22:46:54,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:46:54,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:54,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:46:54,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:46:54,649 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 8 states. [2020-11-06 22:47:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:00,982 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-06 22:47:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:47:00,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-06 22:47:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:00,984 INFO L225 Difference]: With dead ends: 36 [2020-11-06 22:47:00,984 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 22:47:00,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:47:00,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 22:47:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-11-06 22:47:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:47:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-06 22:47:00,998 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 23 [2020-11-06 22:47:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:00,999 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-06 22:47:00,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:47:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-06 22:47:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-06 22:47:01,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:01,000 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:47:01,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:01,216 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:01,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1988412960, now seen corresponding path program 3 times [2020-11-06 22:47:01,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:01,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942295760] [2020-11-06 22:47:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:47:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:01,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942295760] [2020-11-06 22:47:01,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287216782] [2020-11-06 22:47:01,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:18,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-06 22:47:18,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:47:18,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-06 22:47:18,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:18,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:47:18,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-06 22:47:18,936 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:47:18,954 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:47:18,955 INFO L382 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 23 treesize of output 23 [2020-11-06 22:47:18,956 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-11-06 22:47:18,977 INFO L625 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2020-11-06 22:47:18,979 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-06 22:47:18,979 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:22 [2020-11-06 22:47:19,018 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:47:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-06 22:47:19,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:47:19,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-11-06 22:47:19,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944368888] [2020-11-06 22:47:19,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 22:47:19,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 22:47:19,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:47:19,148 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 14 states. [2020-11-06 22:47:28,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:28,068 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-11-06 22:47:28,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-06 22:47:28,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-11-06 22:47:28,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:28,069 INFO L225 Difference]: With dead ends: 40 [2020-11-06 22:47:28,070 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:47:28,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2020-11-06 22:47:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:47:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:47:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:47:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:47:28,072 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-11-06 22:47:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:28,073 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:47:28,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 22:47:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:47:28,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:47:28,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:28,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:47:28,574 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-11-06 22:47:28,577 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-11-06 22:47:28,578 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-06 22:47:28,578 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-11-06 22:47:28,578 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-06 22:47:28,578 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:47:28,578 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string8.offset| |old(#t~string8.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |old(#valid)| |#valid|) (= |#t~string51.base| |old(#t~string51.base)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#t~string51.offset| |old(#t~string51.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#t~string8.base| |old(#t~string8.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string7.base| |old(#t~string7.base)|)) [2020-11-06 22:47:28,578 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:47:28,579 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:47:28,579 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2020-11-06 22:47:28,579 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:47:28,579 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:47:28,579 INFO L266 CegarLoopResult]: For program point L161(lines 161 236) no Hoare annotation was computed. [2020-11-06 22:47:28,579 INFO L266 CegarLoopResult]: For program point L190(lines 190 208) no Hoare annotation was computed. [2020-11-06 22:47:28,579 INFO L262 CegarLoopResult]: At program point L221(line 221) the Hoare annotation is: (not (= |old(~Id_MCDC_93~0)| 0)) [2020-11-06 22:47:28,579 INFO L266 CegarLoopResult]: For program point L221-1(line 221) no Hoare annotation was computed. [2020-11-06 22:47:28,580 INFO L266 CegarLoopResult]: For program point L219(lines 219 227) no Hoare annotation was computed. [2020-11-06 22:47:28,580 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 133 237) no Hoare annotation was computed. [2020-11-06 22:47:28,580 INFO L266 CegarLoopResult]: For program point L182(lines 182 229) no Hoare annotation was computed. [2020-11-06 22:47:28,580 INFO L266 CegarLoopResult]: For program point L180(lines 180 234) no Hoare annotation was computed. [2020-11-06 22:47:28,580 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 133 237) no Hoare annotation was computed. [2020-11-06 22:47:28,580 INFO L266 CegarLoopResult]: For program point L197(lines 197 207) no Hoare annotation was computed. [2020-11-06 22:47:28,580 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 133 237) the Hoare annotation is: (or (and (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) (not (= |old(~Id_MCDC_93~0)| 0))) [2020-11-06 22:47:28,581 INFO L262 CegarLoopResult]: At program point L202(lines 167 235) the Hoare annotation is: (let ((.cse0 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (and (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 2) (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse0) (not (= |old(~Id_MCDC_93~0)| 0)) (and (= ~Id_MCDC_93~0 0) (= main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse0) (let ((.cse2 (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296)) (.cse1 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (and (< .cse1 42) (< .cse2 42) (not (= 492 (* .cse2 12))) (not (= 492 (* .cse1 12))) .cse0)))) [2020-11-06 22:47:28,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,593 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:47:28 BoogieIcfgContainer [2020-11-06 22:47:28,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:47:28,603 INFO L168 Benchmark]: Toolchain (without parser) took 52577.21 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.9 MB in the beginning and 120.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 101.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:28,603 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 100.6 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:47:28,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.97 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 109.7 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:28,605 INFO L168 Benchmark]: Boogie Preprocessor took 90.74 ms. Allocated memory is still 151.0 MB. Free memory was 109.7 MB in the beginning and 106.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:28,606 INFO L168 Benchmark]: RCFGBuilder took 3005.92 ms. Allocated memory is still 151.0 MB. Free memory was 106.1 MB in the beginning and 112.6 MB in the end (delta: -6.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:28,607 INFO L168 Benchmark]: TraceAbstraction took 49007.07 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 112.6 MB in the beginning and 120.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 87.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:28,611 INFO L339 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 125.8 MB. Free memory was 100.7 MB in the beginning and 100.6 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 456.97 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 109.7 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.74 ms. Allocated memory is still 151.0 MB. Free memory was 109.7 MB in the beginning and 106.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 3005.92 ms. Allocated memory is still 151.0 MB. Free memory was 106.1 MB in the beginning and 112.6 MB in the end (delta: -6.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 49007.07 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 112.6 MB in the beginning and 120.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 87.1 MB. Max. memory is 8.0 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 - 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: 4]: 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: 167]: Loop Invariant [2020-11-06 22:47:28,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-06 22:47:28,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((Id_MCDC_89__Id_MCDC_96 <= 1 && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 2) && 1 <= Id_MCDC_89__Id_MCDC_96) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) || !(\old(Id_MCDC_93) == 0)) || ((Id_MCDC_93 == 0 && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || (((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && !(492 == (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 * 12)) && !(492 == (Id_MCDC_93 + 4294967295) % 4294967296 * 12)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 48.6s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 112 SDslu, 128 SDs, 0 SdLazy, 299 SolverSat, 64 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 20.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, 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, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 170 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 289 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 24.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 151 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 19159 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1466 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 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...