/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:52:35,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:52:35,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:52:35,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:52:35,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:52:35,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:52:35,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:52:35,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:52:35,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:52:35,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:52:35,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:52:35,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:52:35,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:52:35,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:52:35,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:52:35,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:52:35,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:52:35,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:52:35,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:52:35,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:52:35,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:52:35,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:52:35,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:52:35,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:52:35,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 01:52:35,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 01:52:35,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 01:52:35,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 01:52:35,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 01:52:35,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 01:52:35,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:52:35,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:52:35,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:52:35,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:52:35,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:52:35,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:52:35,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:52:35,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:52:35,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:52:35,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:52:35,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:52:35,275 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 [2020-07-20 01:52:35,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:52:35,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:52:35,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:52:35,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:52:35,299 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:52:35,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:52:35,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:52:35,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:52:35,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:52:35,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:52:35,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:52:35,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:52:35,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:52:35,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:52:35,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:52:35,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:52:35,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:52:35,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:52:35,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:52:35,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:52:35,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:52:35,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:52:35,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:52:35,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:52:35,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:52:35,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:52:35,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:52:35,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:52:35,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:52:35,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:52:35,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:52:35,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:52:35,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:52:35,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:52:35,599 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:52:35,600 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2020-07-20 01:52:35,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b78f077da/c4698271a9fd4086b987e0da3efc4656/FLAG30277ed38 [2020-07-20 01:52:36,147 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:52:36,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2020-07-20 01:52:36,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b78f077da/c4698271a9fd4086b987e0da3efc4656/FLAG30277ed38 [2020-07-20 01:52:36,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b78f077da/c4698271a9fd4086b987e0da3efc4656 [2020-07-20 01:52:36,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:52:36,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:52:36,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:52:36,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:52:36,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:52:36,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:52:36" (1/1) ... [2020-07-20 01:52:36,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6377931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36, skipping insertion in model container [2020-07-20 01:52:36,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:52:36" (1/1) ... [2020-07-20 01:52:36,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:52:36,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:52:36,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:52:36,794 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:52:36,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:52:36,824 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:52:36,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36 WrapperNode [2020-07-20 01:52:36,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:52:36,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:52:36,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:52:36,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:52:36,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36" (1/1) ... [2020-07-20 01:52:36,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36" (1/1) ... [2020-07-20 01:52:36,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36" (1/1) ... [2020-07-20 01:52:36,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36" (1/1) ... [2020-07-20 01:52:36,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36" (1/1) ... [2020-07-20 01:52:36,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36" (1/1) ... [2020-07-20 01:52:36,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36" (1/1) ... [2020-07-20 01:52:36,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:52:36,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:52:36,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:52:36,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:52:36,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:52:37,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:52:37,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:52:37,010 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:52:37,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:52:37,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:52:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:52:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:52:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:52:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:52:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:52:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:52:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:52:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:52:37,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:52:37,235 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 01:52:37,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:52:37 BoogieIcfgContainer [2020-07-20 01:52:37,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:52:37,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:52:37,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:52:37,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:52:37,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:52:36" (1/3) ... [2020-07-20 01:52:37,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314317fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:52:37, skipping insertion in model container [2020-07-20 01:52:37,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:52:36" (2/3) ... [2020-07-20 01:52:37,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314317fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:52:37, skipping insertion in model container [2020-07-20 01:52:37,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:52:37" (3/3) ... [2020-07-20 01:52:37,247 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2020-07-20 01:52:37,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:52:37,264 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:52:37,276 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:52:37,303 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:52:37,303 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:52:37,304 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:52:37,304 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:52:37,304 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:52:37,304 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:52:37,304 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:52:37,304 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:52:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-20 01:52:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 01:52:37,330 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:52:37,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:52:37,331 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:52:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:52:37,337 INFO L82 PathProgramCache]: Analyzing trace with hash -961315073, now seen corresponding path program 1 times [2020-07-20 01:52:37,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:52:37,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100052251] [2020-07-20 01:52:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7248a5e0 [2020-07-20 01:52:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:52:37,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100052251] [2020-07-20 01:52:37,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:52:37,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 01:52:37,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302991254] [2020-07-20 01:52:37,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 01:52:37,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:52:37,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 01:52:37,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 01:52:37,474 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-07-20 01:52:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:52:37,500 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-07-20 01:52:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 01:52:37,501 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-20 01:52:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:52:37,510 INFO L225 Difference]: With dead ends: 33 [2020-07-20 01:52:37,511 INFO L226 Difference]: Without dead ends: 14 [2020-07-20 01:52:37,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 01:52:37,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-20 01:52:37,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-20 01:52:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-20 01:52:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-07-20 01:52:37,559 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-07-20 01:52:37,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:52:37,559 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-07-20 01:52:37,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 01:52:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-07-20 01:52:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 01:52:37,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:52:37,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:52:37,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:52:37,562 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:52:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:52:37,563 INFO L82 PathProgramCache]: Analyzing trace with hash -971473804, now seen corresponding path program 1 times [2020-07-20 01:52:37,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:52:37,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577025808] [2020-07-20 01:52:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7248a5e0 [2020-07-20 01:52:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:37,771 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-07-20 01:52:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:52:37,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577025808] [2020-07-20 01:52:37,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:52:37,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 01:52:37,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604310385] [2020-07-20 01:52:37,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 01:52:37,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:52:37,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 01:52:37,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:52:37,950 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2020-07-20 01:52:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:52:38,087 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-07-20 01:52:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 01:52:38,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-07-20 01:52:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:52:38,091 INFO L225 Difference]: With dead ends: 26 [2020-07-20 01:52:38,091 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 01:52:38,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:52:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 01:52:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-07-20 01:52:38,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 01:52:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 01:52:38,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-07-20 01:52:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:52:38,100 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 01:52:38,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 01:52:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 01:52:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 01:52:38,101 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:52:38,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:52:38,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:52:38,102 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:52:38,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:52:38,103 INFO L82 PathProgramCache]: Analyzing trace with hash -18708286, now seen corresponding path program 1 times [2020-07-20 01:52:38,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:52:38,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575714306] [2020-07-20 01:52:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7248a5e0 [2020-07-20 01:52:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:52:38,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575714306] [2020-07-20 01:52:38,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560427698] [2020-07-20 01:52:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7097a9f8 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 [2020-07-20 01:52:38,293 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7097a9f8 issued 2 check-sat command(s) [2020-07-20 01:52:38,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:52:38,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 01:52:38,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:52:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:52:38,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:52:38,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-20 01:52:38,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917576502] [2020-07-20 01:52:38,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 01:52:38,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:52:38,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 01:52:38,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-07-20 01:52:38,413 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2020-07-20 01:52:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:52:38,507 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-07-20 01:52:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 01:52:38,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-07-20 01:52:38,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:52:38,509 INFO L225 Difference]: With dead ends: 31 [2020-07-20 01:52:38,509 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 01:52:38,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:52:38,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 01:52:38,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-07-20 01:52:38,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-20 01:52:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-20 01:52:38,516 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2020-07-20 01:52:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:52:38,517 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-20 01:52:38,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 01:52:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-20 01:52:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 01:52:38,518 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:52:38,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:52:38,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 01:52:38,732 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:52:38,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:52:38,733 INFO L82 PathProgramCache]: Analyzing trace with hash 154986550, now seen corresponding path program 1 times [2020-07-20 01:52:38,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:52:38,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159970509] [2020-07-20 01:52:38,735 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7248a5e0 [2020-07-20 01:52:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:52:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:52:39,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159970509] [2020-07-20 01:52:39,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4432235] [2020-07-20 01:52:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@b97551a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:52:39,082 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@b97551a issued 4 check-sat command(s) [2020-07-20 01:52:39,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:52:39,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 01:52:39,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:52:39,249 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:52:39,255 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:52:39,260 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:52:39,264 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:52:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:52:39,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:52:39,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2020-07-20 01:52:39,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020360560] [2020-07-20 01:52:39,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 01:52:39,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:52:39,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 01:52:39,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-07-20 01:52:39,306 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 19 states. [2020-07-20 01:52:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:52:39,574 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-07-20 01:52:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 01:52:39,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 17 [2020-07-20 01:52:39,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:52:39,576 INFO L225 Difference]: With dead ends: 34 [2020-07-20 01:52:39,576 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:52:39,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-07-20 01:52:39,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:52:39,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:52:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:52:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:52:39,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-07-20 01:52:39,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:52:39,579 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:52:39,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 01:52:39,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:52:39,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:52:39,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:52:39,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:52:39,944 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 01:52:39,945 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:52:39,945 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:52:39,945 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:52:39,945 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:52:39,945 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:52:39,945 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:52:39,946 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 01:52:39,946 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:52:39,946 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:52:39,946 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true [2020-07-20 01:52:39,946 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 25) no Hoare annotation was computed. [2020-07-20 01:52:39,947 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-20 01:52:39,947 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-07-20 01:52:39,947 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-20 01:52:39,947 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2020-07-20 01:52:39,947 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 22) the Hoare annotation is: (let ((.cse1 (* 2 main_~n~0))) (let ((.cse0 (<= main_~i~0 .cse1))) (or (and (<= main_~n~0 0) .cse0 (= 0 main_~i~0)) (and .cse0 (<= .cse1 main_~i~0) (<= main_~n~0 main_~k~0)) (let ((.cse2 (+ main_~i~0 1))) (and (<= .cse1 .cse2) (<= .cse2 (* 2 main_~k~0)) (<= .cse2 .cse1)))))) [2020-07-20 01:52:39,948 INFO L264 CegarLoopResult]: At program point L18-4(lines 18 22) the Hoare annotation is: (let ((.cse2 (* 2 main_~n~0))) (let ((.cse0 (<= main_~i~0 .cse2)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and (<= 0 main_~n~0) (<= main_~n~0 0) .cse0 .cse1) (and .cse0 .cse1 (<= .cse2 main_~i~0) (<= main_~n~0 main_~k~0))))) [2020-07-20 01:52:39,948 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 25) no Hoare annotation was computed. [2020-07-20 01:52:39,948 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 01:52:39,948 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 01:52:39,949 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 01:52:39,949 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 01:52:39,949 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 01:52:39,949 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 01:52:39,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:52:39 BoogieIcfgContainer [2020-07-20 01:52:39,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:52:39,971 INFO L168 Benchmark]: Toolchain (without parser) took 3424.31 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 101.2 MB in the beginning and 93.4 MB in the end (delta: 7.7 MB). Peak memory consumption was 105.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:39,972 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:52:39,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.60 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 91.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:39,974 INFO L168 Benchmark]: Boogie Preprocessor took 120.18 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 181.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:39,975 INFO L168 Benchmark]: RCFGBuilder took 292.23 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 168.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:39,976 INFO L168 Benchmark]: TraceAbstraction took 2728.07 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 93.4 MB in the end (delta: 74.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:52:39,981 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.60 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 91.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.18 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 181.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 292.23 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 168.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2728.07 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 93.4 MB in the end (delta: 74.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (((n <= 0 && i <= 2 * n) && 0 == i) || ((i <= 2 * n && 2 * n <= i) && n <= k)) || ((2 * n <= i + 1 && i + 1 <= 2 * k) && i + 1 <= 2 * n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 37 SDslu, 170 SDs, 0 SdLazy, 211 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 20 NumberOfFragments, 87 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 89 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 84 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 5789 SizeOfPredicates, 6 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/12 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...