/usr/bin/java -ea -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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 06:38:00,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 06:38:00,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 06:38:00,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 06:38:00,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 06:38:00,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 06:38:00,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 06:38:00,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 06:38:00,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 06:38:00,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 06:38:00,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 06:38:00,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 06:38:00,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 06:38:00,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 06:38:00,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 06:38:00,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 06:38:00,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 06:38:00,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 06:38:00,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 06:38:00,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 06:38:00,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 06:38:00,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 06:38:00,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 06:38:00,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 06:38:00,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 06:38:00,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 06:38:00,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 06:38:00,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 06:38:00,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 06:38:00,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 06:38:00,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 06:38:00,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 06:38:00,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 06:38:00,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 06:38:00,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 06:38:00,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 06:38:00,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 06:38:00,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 06:38:00,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 06:38:00,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 06:38:00,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 06:38:00,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 06:38:00,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 06:38:00,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 06:38:00,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 06:38:00,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 06:38:00,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 06:38:00,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 06:38:00,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 06:38:00,209 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 06:38:00,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 06:38:00,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 06:38:00,209 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 06:38:00,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 06:38:00,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 06:38:00,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:38:00,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 06:38:00,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 06:38:00,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 06:38:00,211 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-07-18 06:38:00,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 06:38:00,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 06:38:00,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 06:38:00,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 06:38:00,522 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 06:38:00,522 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2020-07-18 06:38:00,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d16c9f0/43e5152bd0f540fbacf2d273a12c6cde/FLAGac8fe259e [2020-07-18 06:38:01,010 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 06:38:01,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2020-07-18 06:38:01,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d16c9f0/43e5152bd0f540fbacf2d273a12c6cde/FLAGac8fe259e [2020-07-18 06:38:01,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d16c9f0/43e5152bd0f540fbacf2d273a12c6cde [2020-07-18 06:38:01,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 06:38:01,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 06:38:01,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 06:38:01,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 06:38:01,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 06:38:01,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:38:01" (1/1) ... [2020-07-18 06:38:01,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165717ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01, skipping insertion in model container [2020-07-18 06:38:01,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:38:01" (1/1) ... [2020-07-18 06:38:01,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 06:38:01,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 06:38:01,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:38:01,667 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 06:38:01,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:38:01,706 INFO L208 MainTranslator]: Completed translation [2020-07-18 06:38:01,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01 WrapperNode [2020-07-18 06:38:01,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 06:38:01,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 06:38:01,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 06:38:01,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 06:38:01,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01" (1/1) ... [2020-07-18 06:38:01,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01" (1/1) ... [2020-07-18 06:38:01,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01" (1/1) ... [2020-07-18 06:38:01,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01" (1/1) ... [2020-07-18 06:38:01,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01" (1/1) ... [2020-07-18 06:38:01,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01" (1/1) ... [2020-07-18 06:38:01,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01" (1/1) ... [2020-07-18 06:38:01,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 06:38:01,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 06:38:01,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 06:38:01,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 06:38:01,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01" (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 [2020-07-18 06:38:01,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 06:38:01,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 06:38:01,891 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 06:38:01,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 06:38:01,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 06:38:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 06:38:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 06:38:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 06:38:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 06:38:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 06:38:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 06:38:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 06:38:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 06:38:02,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 06:38:02,267 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 06:38:02,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:38:02 BoogieIcfgContainer [2020-07-18 06:38:02,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 06:38:02,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 06:38:02,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 06:38:02,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 06:38:02,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 06:38:01" (1/3) ... [2020-07-18 06:38:02,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec191ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:38:02, skipping insertion in model container [2020-07-18 06:38:02,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:01" (2/3) ... [2020-07-18 06:38:02,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec191ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:38:02, skipping insertion in model container [2020-07-18 06:38:02,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:38:02" (3/3) ... [2020-07-18 06:38:02,280 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2020-07-18 06:38:02,291 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 06:38:02,299 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 06:38:02,313 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 06:38:02,339 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 06:38:02,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 06:38:02,340 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 06:38:02,340 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 06:38:02,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 06:38:02,340 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 06:38:02,340 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 06:38:02,340 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 06:38:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-18 06:38:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-18 06:38:02,366 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:38:02,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:38:02,367 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:38:02,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:38:02,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1049898450, now seen corresponding path program 1 times [2020-07-18 06:38:02,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:38:02,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453383786] [2020-07-18 06:38:02,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:38:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:02,640 INFO L280 TraceCheckUtils]: 0: Hoare triple {43#true} assume true; {43#true} is VALID [2020-07-18 06:38:02,641 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {43#true} {43#true} #66#return; {43#true} is VALID [2020-07-18 06:38:02,643 INFO L263 TraceCheckUtils]: 0: Hoare triple {43#true} call ULTIMATE.init(); {43#true} is VALID [2020-07-18 06:38:02,643 INFO L280 TraceCheckUtils]: 1: Hoare triple {43#true} assume true; {43#true} is VALID [2020-07-18 06:38:02,643 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {43#true} {43#true} #66#return; {43#true} is VALID [2020-07-18 06:38:02,644 INFO L263 TraceCheckUtils]: 3: Hoare triple {43#true} call #t~ret4 := main(); {43#true} is VALID [2020-07-18 06:38:02,644 INFO L280 TraceCheckUtils]: 4: Hoare triple {43#true} havoc ~idBitLength~0; {43#true} is VALID [2020-07-18 06:38:02,644 INFO L280 TraceCheckUtils]: 5: Hoare triple {43#true} havoc ~material_length~0; {43#true} is VALID [2020-07-18 06:38:02,645 INFO L280 TraceCheckUtils]: 6: Hoare triple {43#true} havoc ~nlen~0; {43#true} is VALID [2020-07-18 06:38:02,645 INFO L280 TraceCheckUtils]: 7: Hoare triple {43#true} havoc ~j~0; {43#true} is VALID [2020-07-18 06:38:02,645 INFO L280 TraceCheckUtils]: 8: Hoare triple {43#true} havoc ~k~0; {43#true} is VALID [2020-07-18 06:38:02,646 INFO L280 TraceCheckUtils]: 9: Hoare triple {43#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {43#true} is VALID [2020-07-18 06:38:02,646 INFO L280 TraceCheckUtils]: 10: Hoare triple {43#true} ~nlen~0 := #t~nondet0; {43#true} is VALID [2020-07-18 06:38:02,646 INFO L280 TraceCheckUtils]: 11: Hoare triple {43#true} havoc #t~nondet0; {43#true} is VALID [2020-07-18 06:38:02,647 INFO L280 TraceCheckUtils]: 12: Hoare triple {43#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {43#true} is VALID [2020-07-18 06:38:02,647 INFO L280 TraceCheckUtils]: 13: Hoare triple {43#true} ~idBitLength~0 := #t~nondet1; {43#true} is VALID [2020-07-18 06:38:02,648 INFO L280 TraceCheckUtils]: 14: Hoare triple {43#true} havoc #t~nondet1; {43#true} is VALID [2020-07-18 06:38:02,648 INFO L280 TraceCheckUtils]: 15: Hoare triple {43#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {43#true} is VALID [2020-07-18 06:38:02,648 INFO L280 TraceCheckUtils]: 16: Hoare triple {43#true} ~material_length~0 := #t~nondet2; {43#true} is VALID [2020-07-18 06:38:02,649 INFO L280 TraceCheckUtils]: 17: Hoare triple {43#true} havoc #t~nondet2; {43#true} is VALID [2020-07-18 06:38:02,650 INFO L280 TraceCheckUtils]: 18: Hoare triple {43#true} assume !!(~nlen~0 == (if ~idBitLength~0 < 0 && 0 != ~idBitLength~0 % 32 then 1 + ~idBitLength~0 / 32 else ~idBitLength~0 / 32)); {43#true} is VALID [2020-07-18 06:38:02,651 INFO L280 TraceCheckUtils]: 19: Hoare triple {43#true} ~j~0 := 0; {47#(<= 0 main_~j~0)} is VALID [2020-07-18 06:38:02,653 INFO L280 TraceCheckUtils]: 20: Hoare triple {47#(<= 0 main_~j~0)} assume !!(~j~0 < (if ~idBitLength~0 < 0 && 0 != ~idBitLength~0 % 8 then 1 + ~idBitLength~0 / 8 else ~idBitLength~0 / 8) && ~j~0 < ~material_length~0); {47#(<= 0 main_~j~0)} is VALID [2020-07-18 06:38:02,656 INFO L263 TraceCheckUtils]: 21: Hoare triple {47#(<= 0 main_~j~0)} call __VERIFIER_assert((if 0 <= ~j~0 then 1 else 0)); {48#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 06:38:02,657 INFO L280 TraceCheckUtils]: 22: Hoare triple {48#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {49#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 06:38:02,659 INFO L280 TraceCheckUtils]: 23: Hoare triple {49#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {44#false} is VALID [2020-07-18 06:38:02,660 INFO L280 TraceCheckUtils]: 24: Hoare triple {44#false} assume !false; {44#false} is VALID [2020-07-18 06:38:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:38:02,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453383786] [2020-07-18 06:38:02,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:38:02,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 06:38:02,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670951893] [2020-07-18 06:38:02,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-18 06:38:02,678 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:38:02,682 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 06:38:02,728 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:02,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 06:38:02,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:38:02,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 06:38:02,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-18 06:38:02,741 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-07-18 06:38:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:03,176 INFO L93 Difference]: Finished difference Result 73 states and 98 transitions. [2020-07-18 06:38:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 06:38:03,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-18 06:38:03,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:38:03,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:38:03,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2020-07-18 06:38:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:38:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2020-07-18 06:38:03,201 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 98 transitions. [2020-07-18 06:38:03,383 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 98 edges. 98 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:03,397 INFO L225 Difference]: With dead ends: 73 [2020-07-18 06:38:03,397 INFO L226 Difference]: Without dead ends: 45 [2020-07-18 06:38:03,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-18 06:38:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-18 06:38:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-07-18 06:38:03,477 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:38:03,478 INFO L82 GeneralOperation]: Start isEquivalent. First operand 45 states. Second operand 42 states. [2020-07-18 06:38:03,478 INFO L74 IsIncluded]: Start isIncluded. First operand 45 states. Second operand 42 states. [2020-07-18 06:38:03,478 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 42 states. [2020-07-18 06:38:03,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:03,486 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2020-07-18 06:38:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-07-18 06:38:03,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:03,488 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:03,488 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 45 states. [2020-07-18 06:38:03,488 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 45 states. [2020-07-18 06:38:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:03,494 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2020-07-18 06:38:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-07-18 06:38:03,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:03,495 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:03,495 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:38:03,496 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:38:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-18 06:38:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-07-18 06:38:03,502 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 25 [2020-07-18 06:38:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:38:03,503 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-07-18 06:38:03,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 06:38:03,503 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 47 transitions. [2020-07-18 06:38:03,567 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-07-18 06:38:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-18 06:38:03,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:38:03,569 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:38:03,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 06:38:03,569 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:38:03,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:38:03,570 INFO L82 PathProgramCache]: Analyzing trace with hash 56397381, now seen corresponding path program 1 times [2020-07-18 06:38:03,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:38:03,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841500966] [2020-07-18 06:38:03,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:38:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,662 INFO L280 TraceCheckUtils]: 0: Hoare triple {374#true} assume true; {374#true} is VALID [2020-07-18 06:38:03,662 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {374#true} {374#true} #66#return; {374#true} is VALID [2020-07-18 06:38:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:03,672 INFO L280 TraceCheckUtils]: 0: Hoare triple {374#true} ~cond := #in~cond; {374#true} is VALID [2020-07-18 06:38:03,672 INFO L280 TraceCheckUtils]: 1: Hoare triple {374#true} assume !(0 == ~cond); {374#true} is VALID [2020-07-18 06:38:03,672 INFO L280 TraceCheckUtils]: 2: Hoare triple {374#true} assume true; {374#true} is VALID [2020-07-18 06:38:03,673 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {374#true} {378#(< main_~j~0 main_~material_length~0)} #70#return; {378#(< main_~j~0 main_~material_length~0)} is VALID [2020-07-18 06:38:03,674 INFO L263 TraceCheckUtils]: 0: Hoare triple {374#true} call ULTIMATE.init(); {374#true} is VALID [2020-07-18 06:38:03,674 INFO L280 TraceCheckUtils]: 1: Hoare triple {374#true} assume true; {374#true} is VALID [2020-07-18 06:38:03,674 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {374#true} {374#true} #66#return; {374#true} is VALID [2020-07-18 06:38:03,675 INFO L263 TraceCheckUtils]: 3: Hoare triple {374#true} call #t~ret4 := main(); {374#true} is VALID [2020-07-18 06:38:03,675 INFO L280 TraceCheckUtils]: 4: Hoare triple {374#true} havoc ~idBitLength~0; {374#true} is VALID [2020-07-18 06:38:03,675 INFO L280 TraceCheckUtils]: 5: Hoare triple {374#true} havoc ~material_length~0; {374#true} is VALID [2020-07-18 06:38:03,676 INFO L280 TraceCheckUtils]: 6: Hoare triple {374#true} havoc ~nlen~0; {374#true} is VALID [2020-07-18 06:38:03,676 INFO L280 TraceCheckUtils]: 7: Hoare triple {374#true} havoc ~j~0; {374#true} is VALID [2020-07-18 06:38:03,676 INFO L280 TraceCheckUtils]: 8: Hoare triple {374#true} havoc ~k~0; {374#true} is VALID [2020-07-18 06:38:03,677 INFO L280 TraceCheckUtils]: 9: Hoare triple {374#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {374#true} is VALID [2020-07-18 06:38:03,677 INFO L280 TraceCheckUtils]: 10: Hoare triple {374#true} ~nlen~0 := #t~nondet0; {374#true} is VALID [2020-07-18 06:38:03,677 INFO L280 TraceCheckUtils]: 11: Hoare triple {374#true} havoc #t~nondet0; {374#true} is VALID [2020-07-18 06:38:03,677 INFO L280 TraceCheckUtils]: 12: Hoare triple {374#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {374#true} is VALID [2020-07-18 06:38:03,678 INFO L280 TraceCheckUtils]: 13: Hoare triple {374#true} ~idBitLength~0 := #t~nondet1; {374#true} is VALID [2020-07-18 06:38:03,678 INFO L280 TraceCheckUtils]: 14: Hoare triple {374#true} havoc #t~nondet1; {374#true} is VALID [2020-07-18 06:38:03,678 INFO L280 TraceCheckUtils]: 15: Hoare triple {374#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {374#true} is VALID [2020-07-18 06:38:03,679 INFO L280 TraceCheckUtils]: 16: Hoare triple {374#true} ~material_length~0 := #t~nondet2; {374#true} is VALID [2020-07-18 06:38:03,679 INFO L280 TraceCheckUtils]: 17: Hoare triple {374#true} havoc #t~nondet2; {374#true} is VALID [2020-07-18 06:38:03,679 INFO L280 TraceCheckUtils]: 18: Hoare triple {374#true} assume !!(~nlen~0 == (if ~idBitLength~0 < 0 && 0 != ~idBitLength~0 % 32 then 1 + ~idBitLength~0 / 32 else ~idBitLength~0 / 32)); {374#true} is VALID [2020-07-18 06:38:03,680 INFO L280 TraceCheckUtils]: 19: Hoare triple {374#true} ~j~0 := 0; {374#true} is VALID [2020-07-18 06:38:03,680 INFO L280 TraceCheckUtils]: 20: Hoare triple {374#true} assume !!(~j~0 < (if ~idBitLength~0 < 0 && 0 != ~idBitLength~0 % 8 then 1 + ~idBitLength~0 / 8 else ~idBitLength~0 / 8) && ~j~0 < ~material_length~0); {378#(< main_~j~0 main_~material_length~0)} is VALID [2020-07-18 06:38:03,681 INFO L263 TraceCheckUtils]: 21: Hoare triple {378#(< main_~j~0 main_~material_length~0)} call __VERIFIER_assert((if 0 <= ~j~0 then 1 else 0)); {374#true} is VALID [2020-07-18 06:38:03,681 INFO L280 TraceCheckUtils]: 22: Hoare triple {374#true} ~cond := #in~cond; {374#true} is VALID [2020-07-18 06:38:03,681 INFO L280 TraceCheckUtils]: 23: Hoare triple {374#true} assume !(0 == ~cond); {374#true} is VALID [2020-07-18 06:38:03,682 INFO L280 TraceCheckUtils]: 24: Hoare triple {374#true} assume true; {374#true} is VALID [2020-07-18 06:38:03,683 INFO L275 TraceCheckUtils]: 25: Hoare quadruple {374#true} {378#(< main_~j~0 main_~material_length~0)} #70#return; {378#(< main_~j~0 main_~material_length~0)} is VALID [2020-07-18 06:38:03,684 INFO L263 TraceCheckUtils]: 26: Hoare triple {378#(< main_~j~0 main_~material_length~0)} call __VERIFIER_assert((if ~j~0 < ~material_length~0 then 1 else 0)); {383#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 06:38:03,685 INFO L280 TraceCheckUtils]: 27: Hoare triple {383#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {384#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 06:38:03,685 INFO L280 TraceCheckUtils]: 28: Hoare triple {384#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {375#false} is VALID [2020-07-18 06:38:03,686 INFO L280 TraceCheckUtils]: 29: Hoare triple {375#false} assume !false; {375#false} is VALID [2020-07-18 06:38:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:38:03,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841500966] [2020-07-18 06:38:03,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:38:03,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 06:38:03,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668958892] [2020-07-18 06:38:03,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-18 06:38:03,691 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:38:03,691 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 06:38:03,725 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:03,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 06:38:03,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:38:03,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 06:38:03,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-18 06:38:03,726 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 5 states. [2020-07-18 06:38:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:03,943 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-18 06:38:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 06:38:03,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-18 06:38:03,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:38:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:38:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 42 transitions. [2020-07-18 06:38:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 06:38:03,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 42 transitions. [2020-07-18 06:38:03,949 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 42 transitions. [2020-07-18 06:38:03,998 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:04,001 INFO L225 Difference]: With dead ends: 48 [2020-07-18 06:38:04,002 INFO L226 Difference]: Without dead ends: 46 [2020-07-18 06:38:04,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-18 06:38:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-18 06:38:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-18 06:38:04,056 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:38:04,056 INFO L82 GeneralOperation]: Start isEquivalent. First operand 46 states. Second operand 46 states. [2020-07-18 06:38:04,056 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand 46 states. [2020-07-18 06:38:04,057 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 46 states. [2020-07-18 06:38:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:04,061 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-07-18 06:38:04,062 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-18 06:38:04,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:04,063 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:04,063 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand 46 states. [2020-07-18 06:38:04,063 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 46 states. [2020-07-18 06:38:04,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:04,068 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-07-18 06:38:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-18 06:38:04,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:04,070 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:04,070 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:38:04,070 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:38:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-18 06:38:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-18 06:38:04,074 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 30 [2020-07-18 06:38:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:38:04,075 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-18 06:38:04,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 06:38:04,075 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 46 states and 50 transitions. [2020-07-18 06:38:04,150 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:04,151 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-18 06:38:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-18 06:38:04,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:38:04,153 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:38:04,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 06:38:04,153 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:38:04,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:38:04,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1292887515, now seen corresponding path program 1 times [2020-07-18 06:38:04,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:38:04,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004215507] [2020-07-18 06:38:04,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:38:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 06:38:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 06:38:04,273 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 06:38:04,274 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 06:38:04,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 06:38:04,304 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 06:38:04,304 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 06:38:04,305 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 06:38:04,305 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-18 06:38:04,306 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 06:38:04,316 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-18 06:38:04,317 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 06:38:04,317 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 06:38:04,317 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 06:38:04,317 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 06:38:04,317 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 06:38:04,317 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-18 06:38:04,317 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-18 06:38:04,317 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-18 06:38:04,318 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 06:38:04,318 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-18 06:38:04,318 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-18 06:38:04,318 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-18 06:38:04,318 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-18 06:38:04,318 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-18 06:38:04,319 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2020-07-18 06:38:04,319 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-18 06:38:04,319 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 06:38:04,319 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 06:38:04,319 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 06:38:04,319 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 06:38:04,319 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2020-07-18 06:38:04,320 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-18 06:38:04,320 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-18 06:38:04,320 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-18 06:38:04,320 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-18 06:38:04,323 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-18 06:38:04,323 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-18 06:38:04,323 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-18 06:38:04,324 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-18 06:38:04,324 WARN L170 areAnnotationChecker]: L20-3 has no Hoare annotation [2020-07-18 06:38:04,324 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-18 06:38:04,324 WARN L170 areAnnotationChecker]: L20-4 has no Hoare annotation [2020-07-18 06:38:04,324 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-18 06:38:04,324 WARN L170 areAnnotationChecker]: L20-5 has no Hoare annotation [2020-07-18 06:38:04,324 WARN L170 areAnnotationChecker]: L20-5 has no Hoare annotation [2020-07-18 06:38:04,324 WARN L170 areAnnotationChecker]: L20-5 has no Hoare annotation [2020-07-18 06:38:04,325 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-18 06:38:04,325 WARN L170 areAnnotationChecker]: L20-6 has no Hoare annotation [2020-07-18 06:38:04,325 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-18 06:38:04,325 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-18 06:38:04,325 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-18 06:38:04,325 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 06:38:04,325 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-18 06:38:04,326 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 06:38:04,326 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-18 06:38:04,326 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-18 06:38:04,326 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-18 06:38:04,326 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-18 06:38:04,328 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-18 06:38:04,328 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-18 06:38:04,329 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-18 06:38:04,329 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 06:38:04,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 06:38:04 BoogieIcfgContainer [2020-07-18 06:38:04,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 06:38:04,338 INFO L168 Benchmark]: Toolchain (without parser) took 2883.49 ms. Allocated memory was 134.7 MB in the beginning and 256.4 MB in the end (delta: 121.6 MB). Free memory was 100.1 MB in the beginning and 227.1 MB in the end (delta: -127.1 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:04,340 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 06:38:04,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.26 ms. Allocated memory is still 134.7 MB. Free memory was 99.6 MB in the beginning and 90.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:04,342 INFO L168 Benchmark]: Boogie Preprocessor took 113.29 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 89.8 MB in the beginning and 177.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:04,344 INFO L168 Benchmark]: RCFGBuilder took 450.08 ms. Allocated memory is still 198.2 MB. Free memory was 177.8 MB in the beginning and 154.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:04,346 INFO L168 Benchmark]: TraceAbstraction took 2060.34 ms. Allocated memory was 198.2 MB in the beginning and 256.4 MB in the end (delta: 58.2 MB). Free memory was 154.3 MB in the beginning and 227.1 MB in the end (delta: -72.9 MB). Peak memory consumption was 108.9 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:04,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.26 ms. Allocated memory is still 134.7 MB. Free memory was 99.6 MB in the beginning and 90.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.29 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 89.8 MB in the beginning and 177.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.08 ms. Allocated memory is still 198.2 MB. Free memory was 177.8 MB in the beginning and 154.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2060.34 ms. Allocated memory was 198.2 MB in the beginning and 256.4 MB in the end (delta: 58.2 MB). Free memory was 154.3 MB in the beginning and 227.1 MB in the end (delta: -72.9 MB). Peak memory consumption was 108.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int idBitLength, material_length, nlen; [L15] int j, k; [L16] nlen = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, nlen=0] [L17] idBitLength = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=9, idBitLength=9, nlen=0] [L18] material_length = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, idBitLength=9, material_length=1, nlen=0] [L19] COND FALSE !(!( nlen == idBitLength / 32 )) VAL [idBitLength=9, material_length=1, nlen=0] [L20] j = 0 VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L20] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L7] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L21] RET __VERIFIER_assert( 0 <= j) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L22] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L7] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L22] RET __VERIFIER_assert( j < material_length ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L23] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L7] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L23] RET __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L24] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 15 SDslu, 206 SDs, 0 SdLazy, 52 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1947 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 incorrect! Received shutdown request...