/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-zilu/benchmark19_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 00:39:09,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 00:39:09,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 00:39:09,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 00:39:09,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 00:39:09,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 00:39:09,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 00:39:09,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 00:39:09,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 00:39:09,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 00:39:09,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 00:39:09,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 00:39:09,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 00:39:09,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 00:39:09,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 00:39:09,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 00:39:09,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 00:39:09,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 00:39:09,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 00:39:09,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 00:39:09,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 00:39:09,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 00:39:09,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 00:39:09,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 00:39:09,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-16 00:39:09,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-16 00:39:09,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-16 00:39:09,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-16 00:39:09,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-16 00:39:09,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-16 00:39:09,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 00:39:09,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 00:39:09,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 00:39:09,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 00:39:09,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 00:39:09,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 00:39:09,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 00:39:09,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 00:39:09,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 00:39:09,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 00:39:09,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 00:39:09,370 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 [2021-04-16 00:39:09,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 00:39:09,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 00:39:09,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-16 00:39:09,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-16 00:39:09,408 INFO L138 SettingsManager]: * Use SBE=true [2021-04-16 00:39:09,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 00:39:09,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 00:39:09,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 00:39:09,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 00:39:09,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 00:39:09,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 00:39:09,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 00:39:09,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 00:39:09,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 00:39:09,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 00:39:09,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 00:39:09,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 00:39:09,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 00:39:09,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 00:39:09,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 00:39:09,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 00:39:09,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 00:39:09,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-16 00:39:09,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-16 00:39:09,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 00:39:09,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-16 00:39:09,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 00:39:09,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-04-16 00:39:09,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 00:39:09,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 00:39:09,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 00:39:09,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 00:39:09,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 00:39:09,698 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 00:39:09,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark19_conjunctive.i [2021-04-16 00:39:09,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17958cf0/cc22e71e5bca447a8c5b471b244cd5a2/FLAG6a95f65bd [2021-04-16 00:39:10,253 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 00:39:10,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark19_conjunctive.i [2021-04-16 00:39:10,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17958cf0/cc22e71e5bca447a8c5b471b244cd5a2/FLAG6a95f65bd [2021-04-16 00:39:10,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17958cf0/cc22e71e5bca447a8c5b471b244cd5a2 [2021-04-16 00:39:10,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 00:39:10,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 00:39:10,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 00:39:10,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 00:39:10,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 00:39:10,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 12:39:10" (1/1) ... [2021-04-16 00:39:10,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c84b8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10, skipping insertion in model container [2021-04-16 00:39:10,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 12:39:10" (1/1) ... [2021-04-16 00:39:10,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 00:39:10,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 00:39:10,881 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark19_conjunctive.i[873,886] [2021-04-16 00:39:10,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 00:39:10,895 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 00:39:10,939 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark19_conjunctive.i[873,886] [2021-04-16 00:39:10,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 00:39:10,959 INFO L208 MainTranslator]: Completed translation [2021-04-16 00:39:10,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10 WrapperNode [2021-04-16 00:39:10,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 00:39:10,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 00:39:10,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 00:39:10,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 00:39:10,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10" (1/1) ... [2021-04-16 00:39:10,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10" (1/1) ... [2021-04-16 00:39:10,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10" (1/1) ... [2021-04-16 00:39:10,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10" (1/1) ... [2021-04-16 00:39:10,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10" (1/1) ... [2021-04-16 00:39:11,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10" (1/1) ... [2021-04-16 00:39:11,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10" (1/1) ... [2021-04-16 00:39:11,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 00:39:11,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 00:39:11,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 00:39:11,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 00:39:11,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10" (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 [2021-04-16 00:39:11,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 00:39:11,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 00:39:11,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 00:39:11,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 00:39:11,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 00:39:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 00:39:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 00:39:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 00:39:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 00:39:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 00:39:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 00:39:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-04-16 00:39:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 00:39:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 00:39:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 00:39:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 00:39:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 00:39:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 00:39:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 00:39:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 00:39:11,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 00:39:11,350 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 00:39:11,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 12:39:11 BoogieIcfgContainer [2021-04-16 00:39:11,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 00:39:11,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 00:39:11,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 00:39:11,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 00:39:11,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 12:39:10" (1/3) ... [2021-04-16 00:39:11,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d64091f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 12:39:11, skipping insertion in model container [2021-04-16 00:39:11,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:39:10" (2/3) ... [2021-04-16 00:39:11,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d64091f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 12:39:11, skipping insertion in model container [2021-04-16 00:39:11,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 12:39:11" (3/3) ... [2021-04-16 00:39:11,357 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark19_conjunctive.i [2021-04-16 00:39:11,378 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-16 00:39:11,383 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 00:39:11,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 00:39:11,422 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 00:39:11,422 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 00:39:11,423 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-16 00:39:11,423 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 00:39:11,423 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 00:39:11,423 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 00:39:11,423 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 00:39:11,423 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 00:39:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 00:39:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 00:39:11,443 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:39:11,444 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:39:11,444 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:39:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:39:11,452 INFO L82 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2021-04-16 00:39:11,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:39:11,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399040491] [2021-04-16 00:39:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:39:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:11,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:11,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:11,583 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-04-16 00:39:11,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:39:11,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:11,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:11,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 00:39:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:11,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:11,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:39:11,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399040491] [2021-04-16 00:39:11,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 00:39:11,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 00:39:11,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229732154] [2021-04-16 00:39:11,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 00:39:11,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 00:39:11,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 00:39:11,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 00:39:11,663 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:11,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 00:39:11,747 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-04-16 00:39:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 00:39:11,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 00:39:11,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 00:39:11,753 INFO L225 Difference]: With dead ends: 33 [2021-04-16 00:39:11,754 INFO L226 Difference]: Without dead ends: 14 [2021-04-16 00:39:11,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-16 00:39:11,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-04-16 00:39:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-04-16 00:39:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-04-16 00:39:11,783 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-04-16 00:39:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 00:39:11,783 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-04-16 00:39:11,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-04-16 00:39:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-16 00:39:11,784 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:39:11,784 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:39:11,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 00:39:11,785 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:39:11,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:39:11,785 INFO L82 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 1 times [2021-04-16 00:39:11,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:39:11,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515710993] [2021-04-16 00:39:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:39:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:11,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:11,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:11,835 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-04-16 00:39:11,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:11,864 INFO L142 QuantifierPusher]: treesize reduction 10, result has 63.0 percent of original size [2021-04-16 00:39:11,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 00:39:11,906 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-04-16 00:39:11,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:11,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:11,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:39:11,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:11,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:39:11,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:11,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:11,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 00:39:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:11,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:11,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:39:11,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515710993] [2021-04-16 00:39:11,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680044654] [2021-04-16 00:39:11,996 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 [2021-04-16 00:39:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:12,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjunts are in the unsatisfiable core [2021-04-16 00:39:12,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 00:39:12,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:12,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:12,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:12,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:12,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:12,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:12,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 00:39:12,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:12,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:12,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 00:39:12,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 00:39:12,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 00:39:12,251 INFO L142 QuantifierPusher]: treesize reduction 6, result has 73.9 percent of original size [2021-04-16 00:39:12,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 00:39:12,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:12,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:39:12,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 00:39:12,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:12,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:12,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:12,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 00:39:12,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:39:12,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:12,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 00:39:12,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:39:12,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,287 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-04-16 00:39:12,292 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:12,297 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-04-16 00:39:12,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:12,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:12,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:12,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:39:12,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:12,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:12,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:12,337 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 00:39:12,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:12,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:39:12,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-16 00:39:12,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-04-16 00:39:12,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844755620] [2021-04-16 00:39:12,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 00:39:12,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 00:39:12,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 00:39:12,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-04-16 00:39:12,351 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 00:39:12,843 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-04-16 00:39:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 00:39:12,843 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-04-16 00:39:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 00:39:12,844 INFO L225 Difference]: With dead ends: 16 [2021-04-16 00:39:12,844 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 00:39:12,845 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 594.2ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-04-16 00:39:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 00:39:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 00:39:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 00:39:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 00:39:12,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-04-16 00:39:12,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 00:39:12,846 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 00:39:12,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:12,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 00:39:12,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 00:39:13,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-04-16 00:39:13,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 00:39:13,264 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-04-16 00:39:13,265 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-04-16 00:39:13,265 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-04-16 00:39:13,265 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-04-16 00:39:13,265 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-04-16 00:39:13,265 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-04-16 00:39:13,265 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-04-16 00:39:13,265 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-16 00:39:13,266 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 00:39:13,266 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-04-16 00:39:13,266 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 29) the Hoare annotation is: true [2021-04-16 00:39:13,266 INFO L198 CegarLoopUtils]: For program point L27(line 27) no Hoare annotation was computed. [2021-04-16 00:39:13,266 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 29) no Hoare annotation was computed. [2021-04-16 00:39:13,266 INFO L198 CegarLoopUtils]: For program point L23(line 23) no Hoare annotation was computed. [2021-04-16 00:39:13,266 INFO L194 CegarLoopUtils]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (< 0 (+ main_~k~0 1)) (<= main_~j~0 main_~k~0) (<= main_~k~0 main_~j~0) (< 0 main_~n~0)) [2021-04-16 00:39:13,266 INFO L194 CegarLoopUtils]: At program point L24-3(lines 24 26) the Hoare annotation is: (and (< 0 (+ main_~k~0 1)) (<= main_~j~0 main_~k~0) (<= main_~k~0 main_~j~0) (< 0 main_~n~0) (<= main_~k~0 0)) [2021-04-16 00:39:13,266 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 29) no Hoare annotation was computed. [2021-04-16 00:39:13,266 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-04-16 00:39:13,266 INFO L198 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-04-16 00:39:13,267 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-04-16 00:39:13,267 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2021-04-16 00:39:13,267 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2021-04-16 00:39:13,267 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-04-16 00:39:13,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 12:39:13 BoogieIcfgContainer [2021-04-16 00:39:13,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 00:39:13,279 INFO L168 Benchmark]: Toolchain (without parser) took 2537.29 ms. Allocated memory was 218.1 MB in the beginning and 262.1 MB in the end (delta: 44.0 MB). Free memory was 184.0 MB in the beginning and 189.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 39.6 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:13,280 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 218.1 MB. Free memory is still 200.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 00:39:13,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.29 ms. Allocated memory is still 218.1 MB. Free memory was 183.8 MB in the beginning and 201.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:13,281 INFO L168 Benchmark]: Boogie Preprocessor took 46.23 ms. Allocated memory is still 218.1 MB. Free memory was 201.4 MB in the beginning and 200.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:13,281 INFO L168 Benchmark]: RCFGBuilder took 343.60 ms. Allocated memory is still 218.1 MB. Free memory was 200.1 MB in the beginning and 186.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:13,281 INFO L168 Benchmark]: TraceAbstraction took 1925.86 ms. Allocated memory was 218.1 MB in the beginning and 262.1 MB in the end (delta: 44.0 MB). Free memory was 186.1 MB in the beginning and 189.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 41.5 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:13,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 218.1 MB. Free memory is still 200.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 217.29 ms. Allocated memory is still 218.1 MB. Free memory was 183.8 MB in the beginning and 201.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.23 ms. Allocated memory is still 218.1 MB. Free memory was 201.4 MB in the beginning and 200.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 343.60 ms. Allocated memory is still 218.1 MB. Free memory was 200.1 MB in the beginning and 186.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1925.86 ms. Allocated memory was 218.1 MB in the beginning and 262.1 MB in the end (delta: 44.0 MB). Free memory was 186.1 MB in the beginning and 189.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 41.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1652.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.7ms, AutomataDifference: 598.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 191.7ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 23 SDslu, 46 SDs, 0 SdLazy, 63 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 664.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 62 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 65.3ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 247 FormulaSimplificationTreeSizeReductionInter, 118.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 14.5ms SsaConstructionTime, 64.9ms SatisfiabilityAnalysisTime, 577.5ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 3 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((0 < k + 1 && j <= k) && k <= j) && 0 < n RESULT: Ultimate proved your program to be correct! Received shutdown request...