java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-multidimensional/max-2-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:39,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:39,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:39,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:39,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:39,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:39,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:39,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:39,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:39,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:39,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:39,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:39,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:39,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:39,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:39,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:39,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:39,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:39,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:39,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:39,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:39,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:39,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:39,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:39,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:39,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:39,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:39,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:39,945 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 [2019-10-14 23:52:39,978 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:39,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:39,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:39,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:39,983 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:39,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:39,984 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:39,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:39,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:39,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:39,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:39,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:39,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:39,985 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:39,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:39,986 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:39,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:39,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:39,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:39,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:39,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:39,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:39,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:39,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:39,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:39,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:39,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:39,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:39,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-14 23:52:40,262 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:40,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:40,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:40,286 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:40,287 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:40,287 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/max-2-u.c [2019-10-14 23:52:40,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf7c4a333/6d5be2128ce64152b2d5f3711b509287/FLAG8087e6ed5 [2019-10-14 23:52:40,795 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:40,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/max-2-u.c [2019-10-14 23:52:40,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf7c4a333/6d5be2128ce64152b2d5f3711b509287/FLAG8087e6ed5 [2019-10-14 23:52:41,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf7c4a333/6d5be2128ce64152b2d5f3711b509287 [2019-10-14 23:52:41,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:41,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:41,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:41,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:41,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:41,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:41" (1/1) ... [2019-10-14 23:52:41,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f82b407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41, skipping insertion in model container [2019-10-14 23:52:41,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:41" (1/1) ... [2019-10-14 23:52:41,202 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:41,220 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:41,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:41,440 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:41,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:41,560 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:41,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41 WrapperNode [2019-10-14 23:52:41,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:41,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:41,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:41,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:41,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41" (1/1) ... [2019-10-14 23:52:41,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41" (1/1) ... [2019-10-14 23:52:41,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41" (1/1) ... [2019-10-14 23:52:41,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41" (1/1) ... [2019-10-14 23:52:41,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41" (1/1) ... [2019-10-14 23:52:41,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41" (1/1) ... [2019-10-14 23:52:41,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41" (1/1) ... [2019-10-14 23:52:41,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:41,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:41,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:41,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:41,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41" (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 [2019-10-14 23:52:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:41,924 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:41,924 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-14 23:52:41,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:41 BoogieIcfgContainer [2019-10-14 23:52:41,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:41,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:41,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:41,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:41,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:41" (1/3) ... [2019-10-14 23:52:41,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f25f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:41, skipping insertion in model container [2019-10-14 23:52:41,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:41" (2/3) ... [2019-10-14 23:52:41,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f25f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:41, skipping insertion in model container [2019-10-14 23:52:41,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:41" (3/3) ... [2019-10-14 23:52:41,935 INFO L109 eAbstractionObserver]: Analyzing ICFG max-2-u.c [2019-10-14 23:52:41,947 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:41,954 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:41,967 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:42,016 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:42,017 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:42,017 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:42,022 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:42,022 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:42,022 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:42,023 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:42,023 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-14 23:52:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:52:42,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:42,056 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:42,058 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:42,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:42,062 INFO L82 PathProgramCache]: Analyzing trace with hash 659715076, now seen corresponding path program 1 times [2019-10-14 23:52:42,069 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:42,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793839061] [2019-10-14 23:52:42,069 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:42,069 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:42,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:42,144 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:42,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157936266] [2019-10-14 23:52:42,145 INFO L94 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 [2019-10-14 23:52:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:42,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:42,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:42,254 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:42,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793839061] [2019-10-14 23:52:42,292 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:42,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157936266] [2019-10-14 23:52:42,293 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:42,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-14 23:52:42,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436358977] [2019-10-14 23:52:42,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:52:42,300 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:42,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:52:42,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:52:42,318 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2019-10-14 23:52:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:42,411 INFO L93 Difference]: Finished difference Result 62 states and 95 transitions. [2019-10-14 23:52:42,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:52:42,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-14 23:52:42,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:42,428 INFO L225 Difference]: With dead ends: 62 [2019-10-14 23:52:42,429 INFO L226 Difference]: Without dead ends: 31 [2019-10-14 23:52:42,435 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:52:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-14 23:52:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-14 23:52:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-14 23:52:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-10-14 23:52:42,473 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 16 [2019-10-14 23:52:42,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:42,474 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-10-14 23:52:42,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:52:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-10-14 23:52:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-14 23:52:42,475 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:42,476 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:42,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:42,681 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:42,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1178816700, now seen corresponding path program 1 times [2019-10-14 23:52:42,683 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:42,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23494683] [2019-10-14 23:52:42,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:42,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:42,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:42,697 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:42,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998206701] [2019-10-14 23:52:42,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:42,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:42,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:42,795 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:42,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23494683] [2019-10-14 23:52:42,826 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:42,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998206701] [2019-10-14 23:52:42,827 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:42,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-14 23:52:42,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703738123] [2019-10-14 23:52:42,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:52:42,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:42,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:52:42,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:52:42,830 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 6 states. [2019-10-14 23:52:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:42,946 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2019-10-14 23:52:42,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:52:42,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-14 23:52:42,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:42,950 INFO L225 Difference]: With dead ends: 69 [2019-10-14 23:52:42,950 INFO L226 Difference]: Without dead ends: 46 [2019-10-14 23:52:42,951 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:52:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-14 23:52:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2019-10-14 23:52:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-14 23:52:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2019-10-14 23:52:42,965 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 22 [2019-10-14 23:52:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:42,966 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2019-10-14 23:52:42,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:52:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2019-10-14 23:52:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-14 23:52:42,967 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:42,967 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:43,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:43,171 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:43,172 INFO L82 PathProgramCache]: Analyzing trace with hash -438775100, now seen corresponding path program 1 times [2019-10-14 23:52:43,173 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:43,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812946133] [2019-10-14 23:52:43,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:43,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:43,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:43,199 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:43,200 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139491039] [2019-10-14 23:52:43,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:43,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:52:43,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:52:43,323 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:52:43,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812946133] [2019-10-14 23:52:43,367 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:43,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139491039] [2019-10-14 23:52:43,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [424395169] [2019-10-14 23:52:43,377 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 27 [2019-10-14 23:52:43,414 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:43,414 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:43,490 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:43,491 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 0. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 22 variables. [2019-10-14 23:52:43,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:43,495 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:43,529 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:43,529 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:43,531 INFO L553 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-10-14 23:52:43,531 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:43,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:52:43,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 10 [2019-10-14 23:52:43,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192508743] [2019-10-14 23:52:43,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:43,534 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:43,534 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:43,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:43,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:43,535 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 2 states. [2019-10-14 23:52:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:43,539 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-10-14 23:52:43,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:43,539 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2019-10-14 23:52:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:43,539 INFO L225 Difference]: With dead ends: 43 [2019-10-14 23:52:43,540 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:43,540 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:43,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:43,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-10-14 23:52:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:43,542 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:43,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:43,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:43,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:43,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:43,782 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:43,783 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:43,783 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:43,783 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:43,783 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:43,783 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:43,783 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:43,784 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 62) no Hoare annotation was computed. [2019-10-14 23:52:43,784 INFO L439 ceAbstractionStarter]: At program point L56(line 56) the Hoare annotation is: false [2019-10-14 23:52:43,784 INFO L443 ceAbstractionStarter]: For program point L56-1(line 56) no Hoare annotation was computed. [2019-10-14 23:52:43,784 INFO L439 ceAbstractionStarter]: At program point L52-2(lines 52 60) the Hoare annotation is: false [2019-10-14 23:52:43,784 INFO L443 ceAbstractionStarter]: For program point L52-3(lines 52 60) no Hoare annotation was computed. [2019-10-14 23:52:43,784 INFO L439 ceAbstractionStarter]: At program point L36-2(lines 36 45) the Hoare annotation is: false [2019-10-14 23:52:43,784 INFO L443 ceAbstractionStarter]: For program point L36-3(lines 36 45) no Hoare annotation was computed. [2019-10-14 23:52:43,785 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 28) the Hoare annotation is: false [2019-10-14 23:52:43,785 INFO L443 ceAbstractionStarter]: For program point L24-3(lines 24 28) no Hoare annotation was computed. [2019-10-14 23:52:43,785 INFO L439 ceAbstractionStarter]: At program point L54-2(lines 54 58) the Hoare annotation is: false [2019-10-14 23:52:43,785 INFO L443 ceAbstractionStarter]: For program point L54-3(lines 54 58) no Hoare annotation was computed. [2019-10-14 23:52:43,785 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 62) no Hoare annotation was computed. [2019-10-14 23:52:43,785 INFO L439 ceAbstractionStarter]: At program point L38-2(lines 38 43) the Hoare annotation is: false [2019-10-14 23:52:43,785 INFO L443 ceAbstractionStarter]: For program point L38-3(lines 38 43) no Hoare annotation was computed. [2019-10-14 23:52:43,785 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 62) the Hoare annotation is: true [2019-10-14 23:52:43,785 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 30) the Hoare annotation is: false [2019-10-14 23:52:43,786 INFO L443 ceAbstractionStarter]: For program point L22-3(lines 22 30) no Hoare annotation was computed. [2019-10-14 23:52:43,786 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 41) no Hoare annotation was computed. [2019-10-14 23:52:43,786 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 41) no Hoare annotation was computed. [2019-10-14 23:52:43,786 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:52:43,786 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:52:43,786 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:52:43,786 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:52:43,786 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:52:43,786 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:52:43,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:43 BoogieIcfgContainer [2019-10-14 23:52:43,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:43,797 INFO L168 Benchmark]: Toolchain (without parser) took 2608.99 ms. Allocated memory was 146.3 MB in the beginning and 233.3 MB in the end (delta: 87.0 MB). Free memory was 103.0 MB in the beginning and 177.2 MB in the end (delta: -74.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,798 INFO L168 Benchmark]: CDTParser took 1.09 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.91 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.8 MB in the beginning and 181.7 MB in the end (delta: -79.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,800 INFO L168 Benchmark]: Boogie Preprocessor took 54.72 ms. Allocated memory is still 202.4 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,800 INFO L168 Benchmark]: RCFGBuilder took 309.85 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 163.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,802 INFO L168 Benchmark]: TraceAbstraction took 1867.15 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 162.9 MB in the beginning and 177.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,806 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 372.91 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.8 MB in the beginning and 181.7 MB in the end (delta: -79.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.72 ms. Allocated memory is still 202.4 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 309.85 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 163.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1867.15 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 162.9 MB in the beginning and 177.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 50 SDslu, 60 SDs, 0 SdLazy, 45 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 15 PreInvPairs, 15 NumberOfFragments, 12 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 3754 SizeOfPredicates, 6 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 42/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 118, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.93, AVG_VARS_REMOVED_DURING_WEAKENING: 0.84, AVG_WEAKENED_CONJUNCTS: 0.24, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...