/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 --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_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:39:03,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:39:03,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:39:03,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:39:03,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:39:03,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:39:03,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:39:04,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:39:04,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:39:04,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:39:04,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:39:04,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:39:04,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:39:04,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:39:04,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:39:04,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:39:04,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:39:04,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:39:04,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:39:04,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:39:04,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:39:04,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:39:04,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:39:04,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:39:04,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:39:04,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 06:39:04,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 06:39:04,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 06:39:04,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 06:39:04,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 06:39:04,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 06:39:04,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 06:39:04,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 06:39:04,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:39:04,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:39:04,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:39:04,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:39:04,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:39:04,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:39:04,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:39:04,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:39:04,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:39:04,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:39:04,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:39:04,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:39:04,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:39:04,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:39:04,109 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:39:04,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:39:04,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:39:04,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:39:04,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:39:04,111 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:39:04,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:39:04,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:39:04,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:39:04,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:39:04,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:39:04,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:39:04,112 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:39:04,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:39:04,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:39:04,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:39:04,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:39:04,537 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:39:04,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-11-07 06:39:04,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f221bf5/8d51b9c58a89467ba0b809d4d87e67a0/FLAGce9da9d3f [2020-11-07 06:39:05,252 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:39:05,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-11-07 06:39:05,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f221bf5/8d51b9c58a89467ba0b809d4d87e67a0/FLAGce9da9d3f [2020-11-07 06:39:05,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f221bf5/8d51b9c58a89467ba0b809d4d87e67a0 [2020-11-07 06:39:05,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:39:05,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:39:05,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:39:05,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:39:05,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:39:05,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:39:05" (1/1) ... [2020-11-07 06:39:05,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bca4141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05, skipping insertion in model container [2020-11-07 06:39:05,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:39:05" (1/1) ... [2020-11-07 06:39:05,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:39:05,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:39:05,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:39:05,898 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:39:05,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:39:05,936 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:39:05,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05 WrapperNode [2020-11-07 06:39:05,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:39:05,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:39:05,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:39:05,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:39:05,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05" (1/1) ... [2020-11-07 06:39:05,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05" (1/1) ... [2020-11-07 06:39:05,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05" (1/1) ... [2020-11-07 06:39:05,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05" (1/1) ... [2020-11-07 06:39:05,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05" (1/1) ... [2020-11-07 06:39:05,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05" (1/1) ... [2020-11-07 06:39:05,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05" (1/1) ... [2020-11-07 06:39:05,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:39:05,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:39:05,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:39:05,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:39:05,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:39:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:39:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:39:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:39:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:39:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:39:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:39:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:39:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:39:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:39:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:39:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:39:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:39:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:39:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:39:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:39:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:39:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:39:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:39:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:39:06,555 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:39:06,555 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 06:39:06,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:39:06 BoogieIcfgContainer [2020-11-07 06:39:06,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:39:06,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:39:06,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:39:06,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:39:06,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:39:05" (1/3) ... [2020-11-07 06:39:06,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332b5ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:39:06, skipping insertion in model container [2020-11-07 06:39:06,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:39:05" (2/3) ... [2020-11-07 06:39:06,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332b5ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:39:06, skipping insertion in model container [2020-11-07 06:39:06,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:39:06" (3/3) ... [2020-11-07 06:39:06,567 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-11-07 06:39:06,584 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:39:06,588 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:39:06,604 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:39:06,639 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:39:06,639 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:39:06,639 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:39:06,640 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:39:06,640 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:39:06,640 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:39:06,640 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:39:06,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:39:06,661 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-11-07 06:39:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 06:39:06,674 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:06,675 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:06,676 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:06,686 INFO L82 PathProgramCache]: Analyzing trace with hash -198657501, now seen corresponding path program 1 times [2020-11-07 06:39:06,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:06,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751855128] [2020-11-07 06:39:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:07,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751855128] [2020-11-07 06:39:07,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:07,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 06:39:07,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928071087] [2020-11-07 06:39:07,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:39:07,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:07,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:39:07,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:39:07,097 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 6 states. [2020-11-07 06:39:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:07,683 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-11-07 06:39:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 06:39:07,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-11-07 06:39:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:07,695 INFO L225 Difference]: With dead ends: 72 [2020-11-07 06:39:07,696 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 06:39:07,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:39:07,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 06:39:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-07 06:39:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 06:39:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-11-07 06:39:07,756 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 33 [2020-11-07 06:39:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:07,757 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-11-07 06:39:07,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:39:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-11-07 06:39:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-07 06:39:07,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:07,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:07,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:39:07,760 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:07,761 INFO L82 PathProgramCache]: Analyzing trace with hash -208239292, now seen corresponding path program 1 times [2020-11-07 06:39:07,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:07,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488031302] [2020-11-07 06:39:07,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:07,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:08,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488031302] [2020-11-07 06:39:08,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:08,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 06:39:08,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674328388] [2020-11-07 06:39:08,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:39:08,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:08,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:39:08,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:39:08,005 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 6 states. [2020-11-07 06:39:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:08,638 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-11-07 06:39:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 06:39:08,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-11-07 06:39:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:08,641 INFO L225 Difference]: With dead ends: 56 [2020-11-07 06:39:08,641 INFO L226 Difference]: Without dead ends: 53 [2020-11-07 06:39:08,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:39:08,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-07 06:39:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-11-07 06:39:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-07 06:39:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-11-07 06:39:08,661 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 38 [2020-11-07 06:39:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:08,662 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-11-07 06:39:08,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:39:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-11-07 06:39:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-07 06:39:08,664 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:08,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:08,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:39:08,664 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:08,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1167419530, now seen corresponding path program 1 times [2020-11-07 06:39:08,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:08,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036591371] [2020-11-07 06:39:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:08,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:08,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036591371] [2020-11-07 06:39:08,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:08,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 06:39:08,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073301832] [2020-11-07 06:39:08,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 06:39:08,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:08,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 06:39:08,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 06:39:08,882 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 8 states. [2020-11-07 06:39:09,271 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-11-07 06:39:09,555 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-11-07 06:39:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:09,962 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2020-11-07 06:39:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 06:39:09,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-11-07 06:39:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:09,965 INFO L225 Difference]: With dead ends: 81 [2020-11-07 06:39:09,965 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:39:09,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-11-07 06:39:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:39:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:39:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:39:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:39:09,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-11-07 06:39:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:09,971 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:39:09,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 06:39:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:39:09,972 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:39:09,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:39:09,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:39:10,428 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 27 [2020-11-07 06:39:10,752 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 27 [2020-11-07 06:39:11,178 WARN L194 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-11-07 06:39:11,522 WARN L194 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-11-07 06:39:11,897 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-11-07 06:39:12,154 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-11-07 06:39:12,416 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,416 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,416 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,417 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,417 INFO L269 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,417 INFO L269 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,419 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:39:12,419 INFO L269 CegarLoopResult]: At program point L4-5(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,419 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:39:12,419 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:39:12,420 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 06:39:12,420 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__return_100~0 |old(~__return_100~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 06:39:12,421 INFO L269 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,421 INFO L269 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,421 INFO L269 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: true [2020-11-07 06:39:12,421 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:39:12,421 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:39:12,421 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:39:12,421 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:39:12,422 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:39:12,422 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-11-07 06:39:12,422 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-07 06:39:12,422 INFO L266 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-11-07 06:39:12,422 INFO L266 CegarLoopResult]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2020-11-07 06:39:12,422 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-11-07 06:39:12,422 INFO L262 CegarLoopResult]: At program point L64(line 64) the Hoare annotation is: false [2020-11-07 06:39:12,423 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0) (= main_~__tmp_1~0 1))) [2020-11-07 06:39:12,423 INFO L262 CegarLoopResult]: At program point L64-1(line 64) the Hoare annotation is: false [2020-11-07 06:39:12,425 INFO L262 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__tmp_3~0 0)) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-11-07 06:39:12,425 INFO L262 CegarLoopResult]: At program point mainEXIT(lines 13 102) the Hoare annotation is: (or (= |old(~__return_100~0)| ~__return_100~0) (and (not (= main_~__tmp_1~0 0)) (not (= main_~__VERIFIER_assert__cond~0 0)))) [2020-11-07 06:39:12,425 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,425 INFO L262 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-11-07 06:39:12,425 INFO L262 CegarLoopResult]: At program point L48-1(line 48) the Hoare annotation is: false [2020-11-07 06:39:12,426 INFO L262 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse4 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse4 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= main_~__tmp_2~0 0))) (.cse3 (< 0 .cse4))) (or (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0))) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1))))) [2020-11-07 06:39:12,426 INFO L262 CegarLoopResult]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse3 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse3 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (< 0 .cse3))) (or (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)) (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse2 (not (= main_~__tmp_3~0 0)))))) [2020-11-07 06:39:12,426 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0) (= main_~__tmp_1~0 1))) [2020-11-07 06:39:12,426 INFO L262 CegarLoopResult]: At program point L94(line 94) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-11-07 06:39:12,426 INFO L262 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__tmp_3~0 0)) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-11-07 06:39:12,427 INFO L262 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: (let ((.cse5 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse5 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= main_~__tmp_2~0 0))) (.cse3 (< 0 .cse5)) (.cse4 (not (= main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0)) .cse4) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) .cse4 (= main_~__tmp_1~0 1))))) [2020-11-07 06:39:12,427 INFO L262 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,427 INFO L262 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,429 INFO L262 CegarLoopResult]: At program point L78(line 78) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-11-07 06:39:12,429 INFO L262 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse4 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse4 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= main_~__tmp_2~0 0))) (.cse3 (< 0 .cse4))) (or (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)) (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0)))))) [2020-11-07 06:39:12,430 INFO L262 CegarLoopResult]: At program point L33(lines 33 89) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0) (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1))) [2020-11-07 06:39:12,430 INFO L262 CegarLoopResult]: At program point L95(lines 14 102) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-11-07 06:39:12,430 INFO L262 CegarLoopResult]: At program point L62(lines 62 70) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__tmp_3~0 0)) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-11-07 06:39:12,431 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-11-07 06:39:12,431 INFO L262 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-11-07 06:39:12,431 INFO L262 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-11-07 06:39:12,432 INFO L262 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,432 INFO L262 CegarLoopResult]: At program point L83(line 83) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-11-07 06:39:12,432 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,432 INFO L262 CegarLoopResult]: At program point L79(lines 52 87) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-11-07 06:39:12,433 INFO L262 CegarLoopResult]: At program point L46(lines 46 87) the Hoare annotation is: (let ((.cse5 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse5 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (not (= main_~__tmp_2~0 0))) (.cse3 (< 0 .cse5)) (.cse4 (not (= main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__VERIFIER_assert__cond~2 0)) .cse2 .cse3 (not (= main_~__tmp_3~0 0)) .cse4) (and .cse0 .cse1 .cse2 .cse3 (= main_~__VERIFIER_assert__cond~0 1) .cse4 (= main_~__tmp_1~0 1))))) [2020-11-07 06:39:12,433 INFO L262 CegarLoopResult]: At program point mainFINAL(lines 13 102) the Hoare annotation is: (or (= |old(~__return_100~0)| ~__return_100~0) (and (not (= main_~__tmp_1~0 0)) (not (= main_~__VERIFIER_assert__cond~0 0)))) [2020-11-07 06:39:12,433 INFO L262 CegarLoopResult]: At program point L75(line 75) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-11-07 06:39:12,434 INFO L262 CegarLoopResult]: At program point L100(line 100) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,434 INFO L262 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-11-07 06:39:12,434 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 13 102) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,434 INFO L262 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-11-07 06:39:12,434 INFO L262 CegarLoopResult]: At program point L26(lines 26 96) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0))) [2020-11-07 06:39:12,435 INFO L262 CegarLoopResult]: At program point L84(line 84) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (not (= main_~__VERIFIER_assert__cond~0 0))) [2020-11-07 06:39:12,435 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,435 INFO L262 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,436 INFO L262 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-07 06:39:12,436 INFO L262 CegarLoopResult]: At program point L76(lines 76 85) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (= main_~__tmp_2~0 0)) (< 0 (+ main_~main__i~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-11-07 06:39:12,436 INFO L262 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (let ((.cse3 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse3 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (< 0 .cse3))) (or (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1) (= main_~__tmp_1~0 1)) (and .cse0 (not (= main_~__tmp_1~0 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse2 (not (= main_~__tmp_3~0 0)))))) [2020-11-07 06:39:12,436 INFO L262 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: false [2020-11-07 06:39:12,436 INFO L262 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: false [2020-11-07 06:39:12,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:39:12 BoogieIcfgContainer [2020-11-07 06:39:12,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:39:12,468 INFO L168 Benchmark]: Toolchain (without parser) took 6838.91 ms. Allocated memory was 151.0 MB in the beginning and 231.7 MB in the end (delta: 80.7 MB). Free memory was 126.8 MB in the beginning and 161.8 MB in the end (delta: -35.0 MB). Peak memory consumption was 127.9 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:12,469 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:39:12,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.17 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:12,472 INFO L168 Benchmark]: Boogie Preprocessor took 34.93 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:12,474 INFO L168 Benchmark]: RCFGBuilder took 583.80 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 133.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:12,475 INFO L168 Benchmark]: TraceAbstraction took 5903.44 ms. Allocated memory was 151.0 MB in the beginning and 231.7 MB in the end (delta: 80.7 MB). Free memory was 132.6 MB in the beginning and 161.8 MB in the end (delta: -29.2 MB). Peak memory consumption was 132.8 MB. Max. memory is 8.0 GB. [2020-11-07 06:39:12,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 300.17 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.93 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 583.80 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 133.2 MB in the end (delta: -18.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5903.44 ms. Allocated memory was 151.0 MB in the beginning and 231.7 MB in the end (delta: 80.7 MB). Free memory was 132.6 MB in the beginning and 161.8 MB in the end (delta: -29.2 MB). Peak memory consumption was 132.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: \old(__return_100) == __return_100 && 0 < main__i + 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((main__i + 1 <= main__nlen && !(__tmp_1 == 0)) && \old(__return_100) == __return_100) && !(__VERIFIER_assert__cond == 0)) && !(__tmp_2 == 0)) && 0 < main__i + 1) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((main__i + 1 <= main__nlen && \old(__return_100) == __return_100) && 0 < main__i + 1) && __VERIFIER_assert__cond == 1) && __tmp_1 == 1) || ((((((main__i + 1 <= main__nlen && !(__tmp_1 == 0)) && \old(__return_100) == __return_100) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && !(__tmp_3 == 0)) - ProcedureContractResult [Line: 4]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: \old(__return_100) == __return_100 || (!(__tmp_1 == 0) && !(__VERIFIER_assert__cond == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 323 SDslu, 185 SDs, 0 SdLazy, 331 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 64 LocationsWithAnnotation, 72 PreInvPairs, 109 NumberOfFragments, 907 HoareAnnotationTreeSize, 72 FomulaSimplifications, 2837 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 64 FomulaSimplificationsInter, 1667 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 15366 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...