/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/ssh-simplified/s3_srvr_1a.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:48:47,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:48:47,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:48:47,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:48:47,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:48:47,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:48:47,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:48:47,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:48:47,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:48:47,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:48:47,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:48:47,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:48:47,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:48:47,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:48:47,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:48:47,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:48:47,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:48:47,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:48:47,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:48:47,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:48:47,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:48:47,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:48:47,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:48:47,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:48:47,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:48:47,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:48:47,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:48:47,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:48:47,302 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 21:48:47,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:48:47,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:48:47,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:48:47,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:48:47,324 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:48:47,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:48:47,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:48:47,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:48:47,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:48:47,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:48:47,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:48:47,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:48:47,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:48:47,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:48:47,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:48:47,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:48:47,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:48:47,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:48:47,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:48:47,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:48:47,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:48:47,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:48:47,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:48:47,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:48:47,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:48:47,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:48:47,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:47,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:48:47,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:48:47,329 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 21:48:47,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:48:47,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:48:47,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:48:47,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:48:47,664 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:48:47,665 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-20 21:48:47,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abbfebba/30135bd3ac6e44c087d62cf4ed25a126/FLAG6f5c26922 [2020-07-20 21:48:48,261 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:48:48,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-20 21:48:48,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abbfebba/30135bd3ac6e44c087d62cf4ed25a126/FLAG6f5c26922 [2020-07-20 21:48:48,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abbfebba/30135bd3ac6e44c087d62cf4ed25a126 [2020-07-20 21:48:48,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:48:48,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:48:48,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:48:48,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:48:48,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:48:48,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:48:48" (1/1) ... [2020-07-20 21:48:48,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc1bd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48, skipping insertion in model container [2020-07-20 21:48:48,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:48:48" (1/1) ... [2020-07-20 21:48:48,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:48:48,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:48:48,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:48:48,860 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:48:48,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:48:48,903 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:48:48,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48 WrapperNode [2020-07-20 21:48:48,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:48:48,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:48:48,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:48:48,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:48:49,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48" (1/1) ... [2020-07-20 21:48:49,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48" (1/1) ... [2020-07-20 21:48:49,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48" (1/1) ... [2020-07-20 21:48:49,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48" (1/1) ... [2020-07-20 21:48:49,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48" (1/1) ... [2020-07-20 21:48:49,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48" (1/1) ... [2020-07-20 21:48:49,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48" (1/1) ... [2020-07-20 21:48:49,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:48:49,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:48:49,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:48:49,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:48:49,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48" (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 21:48:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:48:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:48:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:48:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:48:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 21:48:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:48:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-20 21:48:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:48:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:48:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:48:49,465 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:48:49,466 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 21:48:49,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:48:49 BoogieIcfgContainer [2020-07-20 21:48:49,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:48:49,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:48:49,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:48:49,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:48:49,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:48:48" (1/3) ... [2020-07-20 21:48:49,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30395167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:48:49, skipping insertion in model container [2020-07-20 21:48:49,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:48:48" (2/3) ... [2020-07-20 21:48:49,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30395167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:48:49, skipping insertion in model container [2020-07-20 21:48:49,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:48:49" (3/3) ... [2020-07-20 21:48:49,484 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-07-20 21:48:49,499 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:48:49,509 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:48:49,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:48:49,572 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:48:49,573 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:48:49,573 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:48:49,573 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:48:49,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:48:49,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:48:49,575 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:48:49,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:48:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-07-20 21:48:49,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-20 21:48:49,641 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:48:49,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:48:49,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:48:49,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:48:49,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2008919768, now seen corresponding path program 1 times [2020-07-20 21:48:49,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:48:49,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133056922] [2020-07-20 21:48:49,677 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 21:48:49,736 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 21:48:49,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:48:49,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 21:48:49,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:48:49,793 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 21:48:49,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:48:49,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133056922] [2020-07-20 21:48:49,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:48:49,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:48:49,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262222168] [2020-07-20 21:48:49,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:48:49,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:48:49,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:48:49,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:48:49,821 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-07-20 21:48:49,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:48:49,963 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2020-07-20 21:48:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:48:49,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-20 21:48:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:48:49,980 INFO L225 Difference]: With dead ends: 136 [2020-07-20 21:48:49,981 INFO L226 Difference]: Without dead ends: 83 [2020-07-20 21:48:49,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 21:48:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-20 21:48:50,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-07-20 21:48:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-20 21:48:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2020-07-20 21:48:50,045 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 8 [2020-07-20 21:48:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:48:50,046 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2020-07-20 21:48:50,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:48:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2020-07-20 21:48:50,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 21:48:50,047 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:48:50,048 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:48:50,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:50,263 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:48:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:48:50,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2066454160, now seen corresponding path program 1 times [2020-07-20 21:48:50,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:48:50,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28250892] [2020-07-20 21:48:50,266 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 21:48:50,314 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 21:48:50,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:48:50,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 21:48:50,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:48:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:48:50,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:48:50,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28250892] [2020-07-20 21:48:50,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:48:50,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:48:50,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838874024] [2020-07-20 21:48:50,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:48:50,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:48:50,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:48:50,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:48:50,346 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand 3 states. [2020-07-20 21:48:50,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:48:50,431 INFO L93 Difference]: Finished difference Result 161 states and 253 transitions. [2020-07-20 21:48:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:48:50,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-20 21:48:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:48:50,435 INFO L225 Difference]: With dead ends: 161 [2020-07-20 21:48:50,435 INFO L226 Difference]: Without dead ends: 121 [2020-07-20 21:48:50,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 21:48:50,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-20 21:48:50,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-07-20 21:48:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-20 21:48:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2020-07-20 21:48:50,457 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 13 [2020-07-20 21:48:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:48:50,458 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2020-07-20 21:48:50,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:48:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2020-07-20 21:48:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 21:48:50,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:48:50,459 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:48:50,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:50,674 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:48:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:48:50,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1216248382, now seen corresponding path program 1 times [2020-07-20 21:48:50,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:48:50,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342122303] [2020-07-20 21:48:50,678 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 21:48:50,722 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:48:50,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:48:50,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 21:48:50,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:48:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 21:48:50,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:48:50,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342122303] [2020-07-20 21:48:50,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:48:50,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:48:50,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790103962] [2020-07-20 21:48:50,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:48:50,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:48:50,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:48:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:48:50,746 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand 3 states. [2020-07-20 21:48:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:48:50,836 INFO L93 Difference]: Finished difference Result 237 states and 369 transitions. [2020-07-20 21:48:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:48:50,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 21:48:50,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:48:50,839 INFO L225 Difference]: With dead ends: 237 [2020-07-20 21:48:50,839 INFO L226 Difference]: Without dead ends: 159 [2020-07-20 21:48:50,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 21:48:50,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-07-20 21:48:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-07-20 21:48:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-20 21:48:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 243 transitions. [2020-07-20 21:48:50,865 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 243 transitions. Word has length 19 [2020-07-20 21:48:50,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:48:50,865 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 243 transitions. [2020-07-20 21:48:50,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:48:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 243 transitions. [2020-07-20 21:48:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 21:48:50,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:48:50,868 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:48:51,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:51,083 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:48:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:48:51,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1623728883, now seen corresponding path program 1 times [2020-07-20 21:48:51,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:48:51,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404645291] [2020-07-20 21:48:51,085 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 21:48:51,129 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:48:51,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:48:51,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 21:48:51,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:48:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 21:48:51,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:48:51,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404645291] [2020-07-20 21:48:51,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:48:51,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:48:51,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18401171] [2020-07-20 21:48:51,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:48:51,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:48:51,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:48:51,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:48:51,163 INFO L87 Difference]: Start difference. First operand 159 states and 243 transitions. Second operand 3 states. [2020-07-20 21:48:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:48:51,382 INFO L93 Difference]: Finished difference Result 371 states and 583 transitions. [2020-07-20 21:48:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:48:51,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-07-20 21:48:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:48:51,386 INFO L225 Difference]: With dead ends: 371 [2020-07-20 21:48:51,387 INFO L226 Difference]: Without dead ends: 217 [2020-07-20 21:48:51,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 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 21:48:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-20 21:48:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2020-07-20 21:48:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-20 21:48:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 295 transitions. [2020-07-20 21:48:51,432 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 295 transitions. Word has length 34 [2020-07-20 21:48:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:48:51,436 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 295 transitions. [2020-07-20 21:48:51,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:48:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 295 transitions. [2020-07-20 21:48:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 21:48:51,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:48:51,440 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:48:51,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:51,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:48:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:48:51,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1694730092, now seen corresponding path program 1 times [2020-07-20 21:48:51,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:48:51,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23645106] [2020-07-20 21:48:51,646 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 21:48:51,689 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:48:51,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:48:51,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 21:48:51,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:48:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 21:48:51,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:48:51,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23645106] [2020-07-20 21:48:51,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:48:51,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:48:51,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619800380] [2020-07-20 21:48:51,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:48:51,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:48:51,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:48:51,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:48:51,719 INFO L87 Difference]: Start difference. First operand 211 states and 295 transitions. Second operand 3 states. [2020-07-20 21:48:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:48:51,790 INFO L93 Difference]: Finished difference Result 419 states and 592 transitions. [2020-07-20 21:48:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:48:51,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-20 21:48:51,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:48:51,794 INFO L225 Difference]: With dead ends: 419 [2020-07-20 21:48:51,794 INFO L226 Difference]: Without dead ends: 264 [2020-07-20 21:48:51,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 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 21:48:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-07-20 21:48:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-07-20 21:48:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-07-20 21:48:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 369 transitions. [2020-07-20 21:48:51,815 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 369 transitions. Word has length 48 [2020-07-20 21:48:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:48:51,815 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 369 transitions. [2020-07-20 21:48:51,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:48:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 369 transitions. [2020-07-20 21:48:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 21:48:51,819 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:48:51,819 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:48:52,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:52,033 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:48:52,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:48:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash 365198397, now seen corresponding path program 1 times [2020-07-20 21:48:52,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:48:52,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287577825] [2020-07-20 21:48:52,036 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:52,067 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 21:48:52,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:48:52,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 21:48:52,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:48:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-07-20 21:48:52,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:48:52,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287577825] [2020-07-20 21:48:52,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:48:52,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:48:52,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257258866] [2020-07-20 21:48:52,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:48:52,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:48:52,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:48:52,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:48:52,097 INFO L87 Difference]: Start difference. First operand 262 states and 369 transitions. Second operand 3 states. [2020-07-20 21:48:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:48:52,221 INFO L93 Difference]: Finished difference Result 527 states and 756 transitions. [2020-07-20 21:48:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:48:52,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 21:48:52,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:48:52,224 INFO L225 Difference]: With dead ends: 527 [2020-07-20 21:48:52,224 INFO L226 Difference]: Without dead ends: 192 [2020-07-20 21:48:52,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 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 21:48:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-07-20 21:48:52,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2020-07-20 21:48:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-07-20 21:48:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 248 transitions. [2020-07-20 21:48:52,237 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 248 transitions. Word has length 51 [2020-07-20 21:48:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:48:52,238 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 248 transitions. [2020-07-20 21:48:52,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:48:52,238 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 248 transitions. [2020-07-20 21:48:52,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 21:48:52,241 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:48:52,241 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:48:52,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:52,457 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:48:52,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:48:52,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1939547864, now seen corresponding path program 1 times [2020-07-20 21:48:52,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:48:52,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838258465] [2020-07-20 21:48:52,459 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:52,509 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 21:48:52,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:48:52,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 21:48:52,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:48:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 21:48:52,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:48:52,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838258465] [2020-07-20 21:48:52,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:48:52,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:48:52,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773502865] [2020-07-20 21:48:52,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:48:52,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:48:52,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:48:52,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:48:52,540 INFO L87 Difference]: Start difference. First operand 189 states and 248 transitions. Second operand 3 states. [2020-07-20 21:48:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:48:52,561 INFO L93 Difference]: Finished difference Result 310 states and 379 transitions. [2020-07-20 21:48:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:48:52,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-20 21:48:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:48:52,563 INFO L225 Difference]: With dead ends: 310 [2020-07-20 21:48:52,563 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 21:48:52,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 21:48:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 21:48:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 21:48:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 21:48:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 21:48:52,565 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2020-07-20 21:48:52,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:48:52,566 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 21:48:52,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:48:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 21:48:52,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 21:48:52,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:48:52,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 21:48:53,209 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 21:48:53,210 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:48:53,210 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:48:53,210 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 21:48:53,210 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:48:53,210 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:48:53,210 INFO L268 CegarLoopResult]: For program point L60(lines 60 189) no Hoare annotation was computed. [2020-07-20 21:48:53,211 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 217) no Hoare annotation was computed. [2020-07-20 21:48:53,211 INFO L268 CegarLoopResult]: For program point L151-1(lines 74 183) no Hoare annotation was computed. [2020-07-20 21:48:53,211 INFO L268 CegarLoopResult]: For program point L52(lines 52 193) no Hoare annotation was computed. [2020-07-20 21:48:53,211 INFO L268 CegarLoopResult]: For program point L85-1(lines 74 183) no Hoare annotation was computed. [2020-07-20 21:48:53,211 INFO L264 CegarLoopResult]: At program point L176(lines 22 211) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and (not (= 0 main_~s__hit~0)) .cse0 (<= 8640 main_~s__state~0)) (and (<= 8672 main_~s__state~0) .cse0) (<= main_~blastFlag~0 2))) [2020-07-20 21:48:53,212 INFO L268 CegarLoopResult]: For program point L44(lines 44 197) no Hoare annotation was computed. [2020-07-20 21:48:53,212 INFO L268 CegarLoopResult]: For program point L135(lines 135 139) no Hoare annotation was computed. [2020-07-20 21:48:53,212 INFO L264 CegarLoopResult]: At program point L69(lines 68 185) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~blastFlag~0 2) .cse0) (and (not (= 0 main_~s__hit~0)) (<= main_~blastFlag~0 3) .cse0))) [2020-07-20 21:48:53,212 INFO L268 CegarLoopResult]: For program point L36(lines 36 201) no Hoare annotation was computed. [2020-07-20 21:48:53,212 INFO L264 CegarLoopResult]: At program point L61(lines 60 189) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,213 INFO L264 CegarLoopResult]: At program point L53(lines 52 193) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,213 INFO L264 CegarLoopResult]: At program point L45(lines 44 197) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,213 INFO L268 CegarLoopResult]: For program point L78-1(lines 78 80) no Hoare annotation was computed. [2020-07-20 21:48:53,213 INFO L268 CegarLoopResult]: For program point L169-1(lines 74 183) no Hoare annotation was computed. [2020-07-20 21:48:53,213 INFO L264 CegarLoopResult]: At program point L37(lines 36 201) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,213 INFO L268 CegarLoopResult]: For program point L29(lines 29 204) no Hoare annotation was computed. [2020-07-20 21:48:53,215 INFO L264 CegarLoopResult]: At program point L120(lines 113 122) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,215 INFO L264 CegarLoopResult]: At program point L112(lines 105 123) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,215 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 217) no Hoare annotation was computed. [2020-07-20 21:48:53,215 INFO L268 CegarLoopResult]: For program point L162-1(lines 162 164) no Hoare annotation was computed. [2020-07-20 21:48:53,216 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-07-20 21:48:53,216 INFO L264 CegarLoopResult]: At program point L30(lines 29 204) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,216 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 217) the Hoare annotation is: true [2020-07-20 21:48:53,216 INFO L268 CegarLoopResult]: For program point L105(lines 105 123) no Hoare annotation was computed. [2020-07-20 21:48:53,217 INFO L268 CegarLoopResult]: For program point L72(lines 72 183) no Hoare annotation was computed. [2020-07-20 21:48:53,217 INFO L268 CegarLoopResult]: For program point L64(lines 64 187) no Hoare annotation was computed. [2020-07-20 21:48:53,217 INFO L268 CegarLoopResult]: For program point L56(lines 56 191) no Hoare annotation was computed. [2020-07-20 21:48:53,217 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-20 21:48:53,217 INFO L271 CegarLoopResult]: At program point L213(lines 8 217) the Hoare annotation is: true [2020-07-20 21:48:53,218 INFO L268 CegarLoopResult]: For program point L114(lines 114 118) no Hoare annotation was computed. [2020-07-20 21:48:53,221 INFO L268 CegarLoopResult]: For program point L48(lines 48 195) no Hoare annotation was computed. [2020-07-20 21:48:53,222 INFO L268 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-07-20 21:48:53,222 INFO L268 CegarLoopResult]: For program point L106(lines 106 110) no Hoare annotation was computed. [2020-07-20 21:48:53,222 INFO L264 CegarLoopResult]: At program point L73(lines 72 183) the Hoare annotation is: (and (<= 8672 main_~s__state~0) (<= main_~blastFlag~0 3)) [2020-07-20 21:48:53,223 INFO L268 CegarLoopResult]: For program point L40(lines 40 199) no Hoare annotation was computed. [2020-07-20 21:48:53,224 INFO L264 CegarLoopResult]: At program point L65(lines 64 187) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~blastFlag~0 2) .cse0) (and (not (= 0 main_~s__hit~0)) (<= main_~blastFlag~0 3) .cse0))) [2020-07-20 21:48:53,224 INFO L268 CegarLoopResult]: For program point L32(lines 32 203) no Hoare annotation was computed. [2020-07-20 21:48:53,225 INFO L264 CegarLoopResult]: At program point L57(lines 56 191) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,225 INFO L264 CegarLoopResult]: At program point L49(lines 48 195) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,225 INFO L264 CegarLoopResult]: At program point L173(lines 8 217) the Hoare annotation is: false [2020-07-20 21:48:53,225 INFO L264 CegarLoopResult]: At program point L41(lines 40 199) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,225 INFO L264 CegarLoopResult]: At program point L33(lines 32 203) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-20 21:48:53,226 INFO L268 CegarLoopResult]: For program point L68(lines 68 185) no Hoare annotation was computed. [2020-07-20 21:48:53,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:48:53 BoogieIcfgContainer [2020-07-20 21:48:53,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:48:53,287 INFO L168 Benchmark]: Toolchain (without parser) took 4716.39 ms. Allocated memory was 140.0 MB in the beginning and 248.0 MB in the end (delta: 108.0 MB). Free memory was 102.2 MB in the beginning and 221.8 MB in the end (delta: -119.6 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:48:53,288 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 21:48:53,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.81 ms. Allocated memory is still 140.0 MB. Free memory was 102.2 MB in the beginning and 90.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-07-20 21:48:53,290 INFO L168 Benchmark]: Boogie Preprocessor took 158.83 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 90.6 MB in the beginning and 179.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:48:53,290 INFO L168 Benchmark]: RCFGBuilder took 407.87 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 160.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-07-20 21:48:53,291 INFO L168 Benchmark]: TraceAbstraction took 3811.20 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 159.2 MB in the beginning and 221.8 MB in the end (delta: -62.6 MB). Peak memory consumption was 110.3 MB. Max. memory is 7.1 GB. [2020-07-20 21:48:53,295 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.81 ms. Allocated memory is still 140.0 MB. Free memory was 102.2 MB in the beginning and 90.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.83 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 90.6 MB in the beginning and 179.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.87 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 160.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3811.20 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 159.2 MB in the beginning and 221.8 MB in the end (delta: -62.6 MB). Peak memory consumption was 110.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 215]: 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: 32]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8640 <= s__state) || ((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8640 <= s__state) || ((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) || (8672 <= s__state && blastFlag <= 3)) || blastFlag <= 2 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 8672 <= s__state && blastFlag <= 3 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: blastFlag <= 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 457 SDtfs, 250 SDslu, 321 SDs, 0 SdLazy, 196 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 21 PreInvPairs, 86 NumberOfFragments, 106 HoareAnnotationTreeSize, 21 FomulaSimplifications, 585 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 21 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 252 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 245 ConstructedInterpolants, 0 QuantifiedInterpolants, 25301 SizeOfPredicates, 6 NumberOfNonLiveVariables, 361 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 202/202 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...