/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 22:11:00,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:11:00,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:11:00,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:11:00,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:11:00,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:11:00,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:11:00,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:11:00,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:11:00,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:11:00,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:11:00,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:11:00,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:11:00,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:11:00,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:11:00,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:11:00,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:11:00,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:11:00,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:11:00,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:11:00,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:11:00,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:11:00,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:11:00,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:11:00,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:11:00,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:11:00,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:11:00,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:11:00,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:11:00,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 22:11:00,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:11:00,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:11:00,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:11:00,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:11:00,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:11:00,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:11:00,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:11:00,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:11:00,854 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:11:00,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:11:00,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:11:00,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:11:00,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:11:00,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:11:00,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:11:00,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:11:00,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:11:00,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:11:00,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:11:00,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:11:00,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:11:00,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:11:00,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:11:00,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:11:00,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:11:00,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:11:00,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:11:00,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:11:00,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:11:00,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:11:00,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:11:00,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:11:00,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:11:00,860 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:11:01,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:11:01,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:11:01,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:11:01,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:11:01,171 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:11:01,172 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-08-21 22:11:01,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f9fb1640/e2d1afe7a02d41bdb36c7a33d00c9dc1/FLAGa9c4c4b0f [2020-08-21 22:11:01,684 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:11:01,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-08-21 22:11:01,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f9fb1640/e2d1afe7a02d41bdb36c7a33d00c9dc1/FLAGa9c4c4b0f [2020-08-21 22:11:02,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f9fb1640/e2d1afe7a02d41bdb36c7a33d00c9dc1 [2020-08-21 22:11:02,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:11:02,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:11:02,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:02,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:11:02,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:11:02,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:02" (1/1) ... [2020-08-21 22:11:02,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38dfc093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02, skipping insertion in model container [2020-08-21 22:11:02,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:02" (1/1) ... [2020-08-21 22:11:02,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:11:02,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:11:02,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:02,382 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:11:02,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:02,516 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:11:02,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02 WrapperNode [2020-08-21 22:11:02,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:02,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:11:02,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:11:02,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:11:02,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02" (1/1) ... [2020-08-21 22:11:02,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02" (1/1) ... [2020-08-21 22:11:02,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02" (1/1) ... [2020-08-21 22:11:02,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02" (1/1) ... [2020-08-21 22:11:02,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02" (1/1) ... [2020-08-21 22:11:02,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02" (1/1) ... [2020-08-21 22:11:02,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02" (1/1) ... [2020-08-21 22:11:02,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:11:02,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:11:02,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:11:02,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:11:02,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 22:11:02,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:11:02,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:11:02,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:11:02,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:11:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 22:11:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:11:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-21 22:11:02,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:11:02,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:11:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:11:02,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:11:02,932 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 22:11:02,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:02 BoogieIcfgContainer [2020-08-21 22:11:02,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:11:02,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:11:02,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:11:02,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:11:02,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:11:02" (1/3) ... [2020-08-21 22:11:02,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aac281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:02, skipping insertion in model container [2020-08-21 22:11:02,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:02" (2/3) ... [2020-08-21 22:11:02,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aac281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:02, skipping insertion in model container [2020-08-21 22:11:02,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:02" (3/3) ... [2020-08-21 22:11:02,955 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-08-21 22:11:02,978 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:11:02,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:11:03,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:11:03,056 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:11:03,056 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:11:03,056 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:11:03,056 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:11:03,057 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:11:03,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:11:03,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:11:03,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:11:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-08-21 22:11:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-21 22:11:03,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:03,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:03,088 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:03,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2008919768, now seen corresponding path program 1 times [2020-08-21 22:11:03,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:03,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552516856] [2020-08-21 22:11:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:03,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552516856] [2020-08-21 22:11:03,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:03,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:03,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591271346] [2020-08-21 22:11:03,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:03,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:03,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:03,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:03,287 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-08-21 22:11:03,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:03,410 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2020-08-21 22:11:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:03,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-08-21 22:11:03,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:03,427 INFO L225 Difference]: With dead ends: 136 [2020-08-21 22:11:03,427 INFO L226 Difference]: Without dead ends: 83 [2020-08-21 22:11:03,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:03,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-21 22:11:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-21 22:11:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-21 22:11:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2020-08-21 22:11:03,483 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 8 [2020-08-21 22:11:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:03,484 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2020-08-21 22:11:03,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2020-08-21 22:11:03,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 22:11:03,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:03,486 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:03,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:11:03,486 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:03,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:03,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2066454160, now seen corresponding path program 1 times [2020-08-21 22:11:03,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:03,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224388650] [2020-08-21 22:11:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:03,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224388650] [2020-08-21 22:11:03,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:03,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:03,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343716119] [2020-08-21 22:11:03,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:03,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:03,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:03,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:03,548 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand 3 states. [2020-08-21 22:11:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:03,633 INFO L93 Difference]: Finished difference Result 161 states and 253 transitions. [2020-08-21 22:11:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:03,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-08-21 22:11:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:03,636 INFO L225 Difference]: With dead ends: 161 [2020-08-21 22:11:03,637 INFO L226 Difference]: Without dead ends: 121 [2020-08-21 22:11:03,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:03,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-08-21 22:11:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-08-21 22:11:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 22:11:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2020-08-21 22:11:03,660 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 13 [2020-08-21 22:11:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:03,661 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2020-08-21 22:11:03,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2020-08-21 22:11:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:11:03,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:03,663 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:03,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:11:03,663 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:03,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:03,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1216248382, now seen corresponding path program 1 times [2020-08-21 22:11:03,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:03,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782793602] [2020-08-21 22:11:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:11:03,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782793602] [2020-08-21 22:11:03,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:03,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:03,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455988975] [2020-08-21 22:11:03,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:03,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:03,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:03,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:03,721 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand 3 states. [2020-08-21 22:11:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:03,881 INFO L93 Difference]: Finished difference Result 281 states and 440 transitions. [2020-08-21 22:11:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:03,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 22:11:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:03,884 INFO L225 Difference]: With dead ends: 281 [2020-08-21 22:11:03,885 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 22:11:03,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 22:11:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2020-08-21 22:11:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-21 22:11:03,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 220 transitions. [2020-08-21 22:11:03,909 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 220 transitions. Word has length 19 [2020-08-21 22:11:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:03,909 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 220 transitions. [2020-08-21 22:11:03,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 220 transitions. [2020-08-21 22:11:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:11:03,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:03,911 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:03,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:11:03,912 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:03,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1216188800, now seen corresponding path program 1 times [2020-08-21 22:11:03,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:03,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135437427] [2020-08-21 22:11:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:11:03,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135437427] [2020-08-21 22:11:03,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:03,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:03,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692588930] [2020-08-21 22:11:03,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:03,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:03,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:03,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:03,959 INFO L87 Difference]: Start difference. First operand 157 states and 220 transitions. Second operand 3 states. [2020-08-21 22:11:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:04,025 INFO L93 Difference]: Finished difference Result 309 states and 441 transitions. [2020-08-21 22:11:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:04,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 22:11:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:04,042 INFO L225 Difference]: With dead ends: 309 [2020-08-21 22:11:04,042 INFO L226 Difference]: Without dead ends: 207 [2020-08-21 22:11:04,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-08-21 22:11:04,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-08-21 22:11:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-08-21 22:11:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 291 transitions. [2020-08-21 22:11:04,068 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 291 transitions. Word has length 19 [2020-08-21 22:11:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:04,069 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 291 transitions. [2020-08-21 22:11:04,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 291 transitions. [2020-08-21 22:11:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 22:11:04,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:04,072 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] [2020-08-21 22:11:04,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:11:04,073 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:04,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1694730092, now seen corresponding path program 1 times [2020-08-21 22:11:04,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:04,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358442286] [2020-08-21 22:11:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-21 22:11:04,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358442286] [2020-08-21 22:11:04,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:04,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:04,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290480568] [2020-08-21 22:11:04,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:04,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:04,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:04,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:04,162 INFO L87 Difference]: Start difference. First operand 207 states and 291 transitions. Second operand 3 states. [2020-08-21 22:11:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:04,246 INFO L93 Difference]: Finished difference Result 411 states and 584 transitions. [2020-08-21 22:11:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:04,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-08-21 22:11:04,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:04,249 INFO L225 Difference]: With dead ends: 411 [2020-08-21 22:11:04,249 INFO L226 Difference]: Without dead ends: 259 [2020-08-21 22:11:04,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-21 22:11:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-08-21 22:11:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-21 22:11:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 364 transitions. [2020-08-21 22:11:04,274 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 364 transitions. Word has length 48 [2020-08-21 22:11:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:04,274 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 364 transitions. [2020-08-21 22:11:04,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 364 transitions. [2020-08-21 22:11:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 22:11:04,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:04,278 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] [2020-08-21 22:11:04,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:11:04,278 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:04,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:04,279 INFO L82 PathProgramCache]: Analyzing trace with hash 365198397, now seen corresponding path program 1 times [2020-08-21 22:11:04,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:04,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982643344] [2020-08-21 22:11:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 22:11:04,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982643344] [2020-08-21 22:11:04,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:04,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:04,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628451420] [2020-08-21 22:11:04,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:04,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:04,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:04,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:04,358 INFO L87 Difference]: Start difference. First operand 257 states and 364 transitions. Second operand 3 states. [2020-08-21 22:11:04,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:04,492 INFO L93 Difference]: Finished difference Result 517 states and 746 transitions. [2020-08-21 22:11:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:04,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-08-21 22:11:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:04,496 INFO L225 Difference]: With dead ends: 517 [2020-08-21 22:11:04,496 INFO L226 Difference]: Without dead ends: 189 [2020-08-21 22:11:04,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-21 22:11:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2020-08-21 22:11:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-21 22:11:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 245 transitions. [2020-08-21 22:11:04,511 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 245 transitions. Word has length 51 [2020-08-21 22:11:04,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:04,512 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 245 transitions. [2020-08-21 22:11:04,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 245 transitions. [2020-08-21 22:11:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 22:11:04,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:04,516 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] [2020-08-21 22:11:04,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:11:04,517 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:04,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:04,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1939547864, now seen corresponding path program 1 times [2020-08-21 22:11:04,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:04,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983724448] [2020-08-21 22:11:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-21 22:11:04,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983724448] [2020-08-21 22:11:04,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:04,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:04,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9277337] [2020-08-21 22:11:04,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:04,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:04,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:04,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:04,589 INFO L87 Difference]: Start difference. First operand 186 states and 245 transitions. Second operand 3 states. [2020-08-21 22:11:04,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:04,605 INFO L93 Difference]: Finished difference Result 305 states and 376 transitions. [2020-08-21 22:11:04,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:04,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-08-21 22:11:04,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:04,607 INFO L225 Difference]: With dead ends: 305 [2020-08-21 22:11:04,607 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:11:04,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:11:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:11:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:11:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:11:04,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2020-08-21 22:11:04,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:04,609 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:11:04,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:11:04,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:11:04,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:11:04,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:11:04,867 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 22:11:04,868 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:11:04,868 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:11:04,868 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 22:11:04,868 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 22:11:04,868 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 22:11:04,869 INFO L268 CegarLoopResult]: For program point L60(lines 60 189) no Hoare annotation was computed. [2020-08-21 22:11:04,869 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 217) no Hoare annotation was computed. [2020-08-21 22:11:04,869 INFO L268 CegarLoopResult]: For program point L151-1(lines 74 183) no Hoare annotation was computed. [2020-08-21 22:11:04,869 INFO L268 CegarLoopResult]: For program point L52(lines 52 193) no Hoare annotation was computed. [2020-08-21 22:11:04,869 INFO L268 CegarLoopResult]: For program point L85-1(lines 74 183) no Hoare annotation was computed. [2020-08-21 22:11:04,870 INFO L264 CegarLoopResult]: At program point L176(lines 22 211) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and .cse0 (<= 8656 main_~s__state~0)) (and (<= 8640 main_~s__state~0) .cse0 (not (= main_~s__hit~0 0))) (<= main_~blastFlag~0 2))) [2020-08-21 22:11:04,870 INFO L268 CegarLoopResult]: For program point L44(lines 44 197) no Hoare annotation was computed. [2020-08-21 22:11:04,870 INFO L268 CegarLoopResult]: For program point L135(lines 135 139) no Hoare annotation was computed. [2020-08-21 22:11:04,871 INFO L264 CegarLoopResult]: At program point L69(lines 68 185) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-21 22:11:04,871 INFO L268 CegarLoopResult]: For program point L36(lines 36 201) no Hoare annotation was computed. [2020-08-21 22:11:04,871 INFO L264 CegarLoopResult]: At program point L61(lines 60 189) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,871 INFO L264 CegarLoopResult]: At program point L53(lines 52 193) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,872 INFO L264 CegarLoopResult]: At program point L45(lines 44 197) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,872 INFO L268 CegarLoopResult]: For program point L78-1(lines 78 80) no Hoare annotation was computed. [2020-08-21 22:11:04,872 INFO L268 CegarLoopResult]: For program point L169-1(lines 74 183) no Hoare annotation was computed. [2020-08-21 22:11:04,872 INFO L264 CegarLoopResult]: At program point L37(lines 36 201) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,872 INFO L268 CegarLoopResult]: For program point L29(lines 29 204) no Hoare annotation was computed. [2020-08-21 22:11:04,873 INFO L264 CegarLoopResult]: At program point L120(lines 113 122) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,874 INFO L264 CegarLoopResult]: At program point L112(lines 105 123) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,874 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 217) no Hoare annotation was computed. [2020-08-21 22:11:04,874 INFO L268 CegarLoopResult]: For program point L162-1(lines 162 164) no Hoare annotation was computed. [2020-08-21 22:11:04,874 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-08-21 22:11:04,875 INFO L264 CegarLoopResult]: At program point L30(lines 29 204) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,875 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 217) the Hoare annotation is: true [2020-08-21 22:11:04,875 INFO L268 CegarLoopResult]: For program point L105(lines 105 123) no Hoare annotation was computed. [2020-08-21 22:11:04,875 INFO L268 CegarLoopResult]: For program point L72(lines 72 183) no Hoare annotation was computed. [2020-08-21 22:11:04,875 INFO L268 CegarLoopResult]: For program point L64(lines 64 187) no Hoare annotation was computed. [2020-08-21 22:11:04,875 INFO L268 CegarLoopResult]: For program point L56(lines 56 191) no Hoare annotation was computed. [2020-08-21 22:11:04,876 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-21 22:11:04,876 INFO L271 CegarLoopResult]: At program point L213(lines 8 217) the Hoare annotation is: true [2020-08-21 22:11:04,876 INFO L268 CegarLoopResult]: For program point L114(lines 114 118) no Hoare annotation was computed. [2020-08-21 22:11:04,876 INFO L268 CegarLoopResult]: For program point L48(lines 48 195) no Hoare annotation was computed. [2020-08-21 22:11:04,876 INFO L268 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-08-21 22:11:04,877 INFO L268 CegarLoopResult]: For program point L106(lines 106 110) no Hoare annotation was computed. [2020-08-21 22:11:04,877 INFO L264 CegarLoopResult]: At program point L73(lines 72 183) the Hoare annotation is: (and (<= main_~blastFlag~0 3) (<= 8656 main_~s__state~0)) [2020-08-21 22:11:04,877 INFO L268 CegarLoopResult]: For program point L40(lines 40 199) no Hoare annotation was computed. [2020-08-21 22:11:04,877 INFO L264 CegarLoopResult]: At program point L65(lines 64 187) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 2)) (and .cse0 (<= main_~blastFlag~0 3) (not (= main_~s__hit~0 0))))) [2020-08-21 22:11:04,878 INFO L268 CegarLoopResult]: For program point L32(lines 32 203) no Hoare annotation was computed. [2020-08-21 22:11:04,878 INFO L264 CegarLoopResult]: At program point L57(lines 56 191) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,878 INFO L264 CegarLoopResult]: At program point L49(lines 48 195) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,878 INFO L264 CegarLoopResult]: At program point L173(lines 8 217) the Hoare annotation is: false [2020-08-21 22:11:04,879 INFO L264 CegarLoopResult]: At program point L41(lines 40 199) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,879 INFO L264 CegarLoopResult]: At program point L33(lines 32 203) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-08-21 22:11:04,879 INFO L268 CegarLoopResult]: For program point L68(lines 68 185) no Hoare annotation was computed. [2020-08-21 22:11:04,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:11:04 BoogieIcfgContainer [2020-08-21 22:11:04,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:11:04,919 INFO L168 Benchmark]: Toolchain (without parser) took 2846.64 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 102.2 MB in the beginning and 108.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:04,926 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:11:04,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.85 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 180.5 MB in the end (delta: -78.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:04,930 INFO L168 Benchmark]: Boogie Preprocessor took 39.17 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 178.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:04,931 INFO L168 Benchmark]: RCFGBuilder took 379.40 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 159.1 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:04,933 INFO L168 Benchmark]: TraceAbstraction took 1976.32 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 158.5 MB in the beginning and 108.0 MB in the end (delta: 50.5 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:04,948 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 443.85 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 180.5 MB in the end (delta: -78.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.17 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 178.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 379.40 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 159.1 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1976.32 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 158.5 MB in the beginning and 108.0 MB in the end (delta: 50.5 MB). Peak memory consumption was 83.0 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: (8640 <= s__state && blastFlag <= 2) || ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0)) - 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 <= 3 && 8656 <= s__state - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((blastFlag <= 3 && 8656 <= s__state) || ((8640 <= s__state && blastFlag <= 3) && !(s__hit == 0))) || 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: blastFlag <= 3 && 8656 <= s__state - 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: 1.5s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 460 SDtfs, 252 SDslu, 319 SDs, 0 SdLazy, 194 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred 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, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 21 PreInvPairs, 87 NumberOfFragments, 94 HoareAnnotationTreeSize, 21 FomulaSimplifications, 622 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 24476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 193/193 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...