/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:18:23,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:18:23,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:18:23,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:18:23,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:18:23,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:18:23,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:18:23,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:18:23,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:18:23,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:18:23,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:18:23,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:18:23,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:18:23,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:18:23,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:18:23,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:18:23,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:18:23,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:18:23,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:18:23,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:18:23,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:18:23,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:18:23,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:18:23,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:18:23,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:18:23,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:18:23,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:18:23,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:18:23,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:18:23,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:18:23,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:18:23,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:18:23,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:18:23,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:18:23,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:18:23,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:18:23,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:18:23,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:18:23,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:18:23,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:18:23,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:18:23,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:18:23,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:18:23,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:18:23,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:18:23,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:18:23,374 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:18:23,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:18:23,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:18:23,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:18:23,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:18:23,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:18:23,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:18:23,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:18:23,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:18:23,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:18:23,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:18:23,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:18:23,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:18:23,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:18:23,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:18:23,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:18:23,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:18:23,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:18:23,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:18:23,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:18:23,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:18:23,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:18:23,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:18:23,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:18:23,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:18:23,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:18:23,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:18:23,718 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:18:23,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:18:23,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:18:23,723 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:18:23,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-08-21 22:18:23,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87013a988/ebc991c93acd42e790700721346bce1f/FLAG385e204c4 [2020-08-21 22:18:24,265 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:18:24,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-08-21 22:18:24,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87013a988/ebc991c93acd42e790700721346bce1f/FLAG385e204c4 [2020-08-21 22:18:24,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87013a988/ebc991c93acd42e790700721346bce1f [2020-08-21 22:18:24,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:18:24,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:18:24,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:18:24,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:18:24,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:18:24,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:18:24" (1/1) ... [2020-08-21 22:18:24,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786a7c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24, skipping insertion in model container [2020-08-21 22:18:24,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:18:24" (1/1) ... [2020-08-21 22:18:24,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:18:24,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:18:24,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:18:24,897 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:18:24,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:18:24,927 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:18:24,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24 WrapperNode [2020-08-21 22:18:24,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:18:24,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:18:24,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:18:24,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:18:24,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24" (1/1) ... [2020-08-21 22:18:24,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24" (1/1) ... [2020-08-21 22:18:25,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24" (1/1) ... [2020-08-21 22:18:25,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24" (1/1) ... [2020-08-21 22:18:25,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24" (1/1) ... [2020-08-21 22:18:25,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24" (1/1) ... [2020-08-21 22:18:25,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24" (1/1) ... [2020-08-21 22:18:25,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:18:25,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:18:25,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:18:25,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:18:25,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 22:18:25,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:18:25,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:18:25,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 22:18:25,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:18:25,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:18:25,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 22:18:25,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:18:25,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:18:25,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:18:25,285 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:18:25,286 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 22:18:25,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:18:25 BoogieIcfgContainer [2020-08-21 22:18:25,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:18:25,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:18:25,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:18:25,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:18:25,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:18:24" (1/3) ... [2020-08-21 22:18:25,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43334c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:18:25, skipping insertion in model container [2020-08-21 22:18:25,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:18:24" (2/3) ... [2020-08-21 22:18:25,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43334c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:18:25, skipping insertion in model container [2020-08-21 22:18:25,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:18:25" (3/3) ... [2020-08-21 22:18:25,298 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-08-21 22:18:25,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:18:25,322 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:18:25,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:18:25,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:18:25,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:18:25,362 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:18:25,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:18:25,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:18:25,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:18:25,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:18:25,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:18:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-21 22:18:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-21 22:18:25,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:18:25,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:18:25,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:18:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:18:25,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-08-21 22:18:25,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:18:25,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677239311] [2020-08-21 22:18:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:18:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:18:26,064 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-08-21 22:18:26,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:18:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:18:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:18:26,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677239311] [2020-08-21 22:18:26,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:18:26,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:18:26,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892140446] [2020-08-21 22:18:26,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:18:26,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:18:26,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:18:26,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:18:26,141 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-08-21 22:18:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:18:26,250 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-08-21 22:18:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:18:26,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-21 22:18:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:18:26,261 INFO L225 Difference]: With dead ends: 27 [2020-08-21 22:18:26,262 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:18:26,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:18:26,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:18:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:18:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:18:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:18:26,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-21 22:18:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:18:26,298 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:18:26,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:18:26,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:18:26,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:18:26,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:18:26,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:18:26,406 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 22:18:26,406 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:18:26,407 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:18:26,407 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 22:18:26,407 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 22:18:26,407 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 22:18:26,408 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-08-21 22:18:26,409 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-08-21 22:18:26,409 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2020-08-21 22:18:26,410 INFO L264 CegarLoopResult]: At program point L23-1(lines 19 24) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2020-08-21 22:18:26,410 INFO L268 CegarLoopResult]: For program point L19-2(lines 13 26) no Hoare annotation was computed. [2020-08-21 22:18:26,410 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2020-08-21 22:18:26,410 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed. [2020-08-21 22:18:26,411 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-21 22:18:26,411 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-21 22:18:26,411 INFO L268 CegarLoopResult]: For program point L7-2(lines 5 11) no Hoare annotation was computed. [2020-08-21 22:18:26,411 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-21 22:18:26,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:18:26 BoogieIcfgContainer [2020-08-21 22:18:26,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:18:26,435 INFO L168 Benchmark]: Toolchain (without parser) took 1776.04 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 104.1 MB in the beginning and 122.4 MB in the end (delta: -18.3 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:18:26,436 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:18:26,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.37 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 94.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:18:26,438 INFO L168 Benchmark]: Boogie Preprocessor took 125.16 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.1 MB in the beginning and 182.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:18:26,439 INFO L168 Benchmark]: RCFGBuilder took 235.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 171.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:18:26,440 INFO L168 Benchmark]: TraceAbstraction took 1141.87 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 122.4 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:18:26,445 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.37 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 94.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.16 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.1 MB in the beginning and 182.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 235.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 171.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1141.87 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 122.4 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 Derived loop invariant: ((2 * i <= j && j <= 2 * i) && 3 * i <= k) && k <= 3 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 7 SDslu, 33 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 47 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 1143 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...