/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:14:49,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:14:49,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:14:49,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:14:49,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:14:49,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:14:49,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:14:49,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:14:49,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:14:49,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:14:49,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:14:49,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:14:49,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:14:49,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:14:49,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:14:49,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:14:49,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:14:49,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:14:49,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:14:49,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:14:49,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:14:49,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:14:49,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:14:49,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:14:49,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:14:49,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:14:49,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:14:49,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:14:49,316 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 22:14:49,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:14:49,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:14:49,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:14:49,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:14:49,333 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:14:49,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:14:49,334 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:14:49,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:14:49,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:14:49,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:14:49,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:14:49,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:14:49,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:14:49,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:14:49,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:14:49,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:14:49,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:14:49,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:14:49,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:14:49,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:14:49,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:14:49,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:14:49,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:14:49,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:14:49,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:14:49,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:14:49,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:49,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:14:49,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:14:49,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 [2020-07-20 22:14:49,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:14:49,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:14:49,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:14:49,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:14:49,671 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:14:49,671 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-07-20 22:14:49,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56141ffbe/5bf049d0525e4f94a03f09aee7d34ea1/FLAG75d1531fc [2020-07-20 22:14:50,261 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:14:50,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c [2020-07-20 22:14:50,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56141ffbe/5bf049d0525e4f94a03f09aee7d34ea1/FLAG75d1531fc [2020-07-20 22:14:50,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56141ffbe/5bf049d0525e4f94a03f09aee7d34ea1 [2020-07-20 22:14:50,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:14:50,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:14:50,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:14:50,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:14:50,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:14:50,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:14:50" (1/1) ... [2020-07-20 22:14:50,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a71685b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50, skipping insertion in model container [2020-07-20 22:14:50,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:14:50" (1/1) ... [2020-07-20 22:14:50,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:14:50,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:14:50,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:14:50,840 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:14:50,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:14:50,888 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:14:50,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50 WrapperNode [2020-07-20 22:14:50,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:14:50,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:14:50,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:14:50,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:14:50,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50" (1/1) ... [2020-07-20 22:14:50,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50" (1/1) ... [2020-07-20 22:14:50,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50" (1/1) ... [2020-07-20 22:14:51,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50" (1/1) ... [2020-07-20 22:14:51,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50" (1/1) ... [2020-07-20 22:14:51,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50" (1/1) ... [2020-07-20 22:14:51,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50" (1/1) ... [2020-07-20 22:14:51,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:14:51,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:14:51,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:14:51,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:14:51,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50" (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 22:14:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:14:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:14:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 22:14:51,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:14:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:14:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 22:14:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:14:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:14:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 22:14:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 22:14:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 22:14:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 22:14:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:14:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:14:51,373 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:14:51,374 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:14:51,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:14:51 BoogieIcfgContainer [2020-07-20 22:14:51,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:14:51,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:14:51,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:14:51,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:14:51,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:14:50" (1/3) ... [2020-07-20 22:14:51,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231688bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:14:51, skipping insertion in model container [2020-07-20 22:14:51,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:14:50" (2/3) ... [2020-07-20 22:14:51,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231688bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:14:51, skipping insertion in model container [2020-07-20 22:14:51,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:14:51" (3/3) ... [2020-07-20 22:14:51,404 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-07-20 22:14:51,429 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:14:51,437 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:14:51,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:14:51,478 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:14:51,478 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:14:51,478 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:14:51,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:14:51,479 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:14:51,479 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:14:51,479 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:14:51,479 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:14:51,498 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 22:14:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 22:14:51,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:14:51,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:14:51,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:14:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:14:51,509 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2020-07-20 22:14:51,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:14:51,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660615533] [2020-07-20 22:14:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:51,615 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:14:51,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:14:51,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 22:14:51,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:14:51,643 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 22:14:51,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:14:51,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660615533] [2020-07-20 22:14:51,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:14:51,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 22:14:51,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700247685] [2020-07-20 22:14:51,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 22:14:51,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:14:51,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 22:14:51,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 22:14:51,668 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-20 22:14:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:14:51,694 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-20 22:14:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 22:14:51,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-20 22:14:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:14:51,702 INFO L225 Difference]: With dead ends: 35 [2020-07-20 22:14:51,702 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 22:14:51,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 22:14:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 22:14:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 22:14:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 22:14:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 22:14:51,751 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-20 22:14:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:14:51,752 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 22:14:51,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 22:14:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 22:14:51,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 22:14:51,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:14:51,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:14:51,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:51,972 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:14:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:14:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2020-07-20 22:14:51,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:14:51,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674708840] [2020-07-20 22:14:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:52,015 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 22:14:52,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:14:52,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:14:52,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:14:52,057 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 22:14:52,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:14:52,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674708840] [2020-07-20 22:14:52,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:14:52,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:14:52,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724093760] [2020-07-20 22:14:52,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:14:52,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:14:52,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:14:52,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:14:52,063 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2020-07-20 22:14:52,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:14:52,103 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-07-20 22:14:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:14:52,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-20 22:14:52,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:14:52,105 INFO L225 Difference]: With dead ends: 24 [2020-07-20 22:14:52,105 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 22:14:52,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:14:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 22:14:52,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-07-20 22:14:52,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-20 22:14:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-07-20 22:14:52,115 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-07-20 22:14:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:14:52,115 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-07-20 22:14:52,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:14:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-20 22:14:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 22:14:52,116 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:14:52,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:14:52,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:52,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:14:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:14:52,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2020-07-20 22:14:52,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:14:52,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764165198] [2020-07-20 22:14:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:52,402 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:14:52,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:14:52,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 22:14:52,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:14:52,461 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-20 22:14:52,461 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,482 INFO L624 ElimStorePlain]: treesize reduction 5, result has 80.8 percent of original size [2020-07-20 22:14:52,510 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-07-20 22:14:52,514 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,523 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:14:52,524 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,525 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:55, output treesize:3 [2020-07-20 22:14:52,547 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-20 22:14:52,550 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,552 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:14:52,553 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,553 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 22:14:52,564 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:14:52,585 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 22:14:52,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:14:52,609 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,621 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,666 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,668 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,673 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,676 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,704 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2020-07-20 22:14:52,709 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 22:14:52,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 22:14:52,719 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 22:14:52,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 22:14:52,728 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-07-20 22:14:52,729 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,732 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:14:52,732 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,740 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 22:14:52,741 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,747 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 22:14:52,748 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,789 INFO L624 ElimStorePlain]: treesize reduction 150, result has 22.3 percent of original size [2020-07-20 22:14:52,794 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2020-07-20 22:14:52,812 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:14:52,825 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 118 [2020-07-20 22:14:52,830 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,833 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,834 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,837 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 22:14:52,839 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,840 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,841 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:52,844 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 3 xjuncts. [2020-07-20 22:14:52,866 INFO L624 ElimStorePlain]: treesize reduction 105, result has 7.9 percent of original size [2020-07-20 22:14:52,866 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:14:52,874 INFO L624 ElimStorePlain]: treesize reduction 6, result has 60.0 percent of original size [2020-07-20 22:14:52,875 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 22:14:52,876 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:367, output treesize:9 [2020-07-20 22:14:52,900 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 22:14:52,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764165198] [2020-07-20 22:14:52,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:14:52,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2020-07-20 22:14:52,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137563057] [2020-07-20 22:14:52,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 22:14:52,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:14:52,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 22:14:52,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:14:52,903 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 9 states. [2020-07-20 22:14:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:14:53,006 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-07-20 22:14:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:14:53,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-07-20 22:14:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:14:53,010 INFO L225 Difference]: With dead ends: 26 [2020-07-20 22:14:53,010 INFO L226 Difference]: Without dead ends: 20 [2020-07-20 22:14:53,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-07-20 22:14:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-20 22:14:53,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-20 22:14:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 22:14:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-20 22:14:53,017 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-07-20 22:14:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:14:53,017 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-20 22:14:53,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 22:14:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-20 22:14:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 22:14:53,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:14:53,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:14:53,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:53,231 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:14:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:14:53,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1573562706, now seen corresponding path program 1 times [2020-07-20 22:14:53,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:14:53,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223258485] [2020-07-20 22:14:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:53,284 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:14:53,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:14:53,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 22:14:53,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:14:53,314 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:14:53,319 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:14:53,328 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:14:53,352 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-20 22:14:53,353 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:53,361 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-07-20 22:14:53,362 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:53,409 INFO L624 ElimStorePlain]: treesize reduction 109, result has 22.7 percent of original size [2020-07-20 22:14:53,410 INFO L512 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2020-07-20 22:14:53,411 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 22:14:53,412 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:193, output treesize:19 [2020-07-20 22:14:53,476 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:14:53,477 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2020-07-20 22:14:53,479 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:14:53,481 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:14:53,483 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 22:14:53,498 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 22:14:53,502 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:14:53,503 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:5 [2020-07-20 22:14:53,520 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:14:53,554 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 22:14:53,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:14:53,587 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,651 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,654 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,655 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,658 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,675 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 22:14:53,675 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:53,682 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2020-07-20 22:14:53,689 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 22:14:53,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 22:14:53,697 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 22:14:53,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 22:14:53,703 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2020-07-20 22:14:53,704 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:53,707 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:14:53,708 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:14:53,712 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 22:14:53,712 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 22:14:53,717 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2020-07-20 22:14:53,732 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:14:53,733 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 118 [2020-07-20 22:14:53,734 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,735 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:14:53,736 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,737 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,738 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:14:53,739 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,741 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:14:53,743 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,745 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,746 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-20 22:14:53,747 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:14:53,750 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2020-07-20 22:14:53,768 INFO L624 ElimStorePlain]: treesize reduction 279, result has 3.1 percent of original size [2020-07-20 22:14:53,769 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:14:53,809 INFO L624 ElimStorePlain]: treesize reduction 32, result has 36.0 percent of original size [2020-07-20 22:14:53,810 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 22:14:53,811 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:235, output treesize:18 [2020-07-20 22:14:53,851 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 22:14:53,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223258485] [2020-07-20 22:14:53,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:14:53,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-20 22:14:53,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116203511] [2020-07-20 22:14:53,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 22:14:53,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:14:53,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 22:14:53,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-07-20 22:14:53,854 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 12 states. [2020-07-20 22:14:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:14:54,010 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-07-20 22:14:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:14:54,011 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-07-20 22:14:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:14:54,012 INFO L225 Difference]: With dead ends: 27 [2020-07-20 22:14:54,012 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 22:14:54,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-07-20 22:14:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 22:14:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-07-20 22:14:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 22:14:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-20 22:14:54,019 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-07-20 22:14:54,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:14:54,020 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-20 22:14:54,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 22:14:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-20 22:14:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 22:14:54,021 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:14:54,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:14:54,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:54,237 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:14:54,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:14:54,239 INFO L82 PathProgramCache]: Analyzing trace with hash -2070630979, now seen corresponding path program 2 times [2020-07-20 22:14:54,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:14:54,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590904352] [2020-07-20 22:14:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:54,298 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:14:54,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:14:54,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 22:14:54,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:14:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:14:54,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:14:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:14:54,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590904352] [2020-07-20 22:14:54,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:14:54,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-20 22:14:54,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849290566] [2020-07-20 22:14:54,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:14:54,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:14:54,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:14:54,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:14:54,358 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2020-07-20 22:14:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:14:54,373 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-20 22:14:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 22:14:54,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-20 22:14:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:14:54,375 INFO L225 Difference]: With dead ends: 21 [2020-07-20 22:14:54,375 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:14:54,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:14:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:14:54,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:14:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:14:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:14:54,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-20 22:14:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:14:54,378 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:14:54,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:14:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:14:54,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:14:54,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:14:54,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:14:54,751 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:14:54,752 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:14:54,752 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:14:54,752 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:14:54,752 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 22:14:54,752 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:14:54,752 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:14:54,752 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: true [2020-07-20 22:14:54,753 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (<= main_~menor~0 |main_#t~mem5|)) [2020-07-20 22:14:54,753 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-07-20 22:14:54,753 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-07-20 22:14:54,754 INFO L268 CegarLoopResult]: For program point L22(lines 22 23) no Hoare annotation was computed. [2020-07-20 22:14:54,755 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2020-07-20 22:14:54,755 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 24) the Hoare annotation is: (let ((.cse0 (= 1 main_~SIZE~0))) (or (and (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) .cse0 (= 1 main_~j~0)) (and .cse0 (= 0 main_~j~0)))) [2020-07-20 22:14:54,755 INFO L268 CegarLoopResult]: For program point L19-4(lines 19 24) no Hoare annotation was computed. [2020-07-20 22:14:54,755 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-07-20 22:14:54,755 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-20 22:14:54,756 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-20 22:14:54,756 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 22:14:54,756 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-20 22:14:54,756 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-20 22:14:54,760 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-20 22:14:54,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 22:14:54,780 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 22:14:54,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:14:54 BoogieIcfgContainer [2020-07-20 22:14:54,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:14:54,789 INFO L168 Benchmark]: Toolchain (without parser) took 4163.96 ms. Allocated memory was 144.2 MB in the beginning and 249.0 MB in the end (delta: 104.9 MB). Free memory was 102.0 MB in the beginning and 216.1 MB in the end (delta: -114.1 MB). Peak memory consumption was 111.4 MB. Max. memory is 7.1 GB. [2020-07-20 22:14:54,795 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 22:14:54,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.31 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 91.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:14:54,798 INFO L168 Benchmark]: Boogie Preprocessor took 125.19 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.6 MB in the beginning and 179.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:14:54,802 INFO L168 Benchmark]: RCFGBuilder took 372.30 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 164.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-20 22:14:54,804 INFO L168 Benchmark]: TraceAbstraction took 3395.45 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 163.7 MB in the beginning and 216.1 MB in the end (delta: -52.4 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. [2020-07-20 22:14:54,813 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.31 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 91.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.19 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.6 MB in the beginning and 179.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.30 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 164.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3395.45 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 163.7 MB in the beginning and 216.1 MB in the end (delta: -52.4 MB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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: 19]: Loop Invariant [2020-07-20 22:14:54,827 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 22:14:54,828 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((menor <= unknown-#memory_int-unknown[array][array] && 1 == SIZE) && 1 == j) || (1 == SIZE && 0 == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 24 SDslu, 145 SDs, 0 SdLazy, 118 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 38 HoareAnnotationTreeSize, 11 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 72 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 112 ConstructedInterpolants, 5 QuantifiedInterpolants, 6144 SizeOfPredicates, 27 NumberOfNonLiveVariables, 246 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 8/14 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...