/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 CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:41:22,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:41:22,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:41:22,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:41:22,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:41:22,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:41:22,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:41:22,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:41:22,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:41:22,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:41:22,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:41:22,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:41:22,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:41:22,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:41:22,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:41:22,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:41:22,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:41:22,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:41:22,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:41:22,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:41:22,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:41:22,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:41:22,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:41:22,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:41:22,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:41:22,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:41:22,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:41:22,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:41:22,103 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 [2020-07-19 21:41:22,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:41:22,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:41:22,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:41:22,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:41:22,123 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:41:22,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:41:22,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:41:22,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:41:22,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:41:22,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:41:22,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:41:22,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:41:22,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:41:22,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:41:22,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:41:22,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:41:22,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:41:22,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:41:22,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:41:22,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:41:22,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:41:22,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:41:22,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:41:22,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:41:22,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:41:22,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:41:22,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:41:22,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:41:22,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:41:22,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:41:22,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:41:22,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:41:22,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:41:22,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:41:22,557 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:41:22,558 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-07-19 21:41:22,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1995e53a7/f60bc5f96cf24804873a1a5242872960/FLAGc9823cd64 [2020-07-19 21:41:23,253 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:41:23,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c [2020-07-19 21:41:23,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1995e53a7/f60bc5f96cf24804873a1a5242872960/FLAGc9823cd64 [2020-07-19 21:41:23,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1995e53a7/f60bc5f96cf24804873a1a5242872960 [2020-07-19 21:41:23,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:41:23,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:41:23,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:41:23,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:41:23,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:41:23,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:41:23" (1/1) ... [2020-07-19 21:41:23,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a012c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:23, skipping insertion in model container [2020-07-19 21:41:23,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:41:23" (1/1) ... [2020-07-19 21:41:23,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:41:23,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:41:23,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:41:23,942 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:41:23,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:41:24,026 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:41:24,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24 WrapperNode [2020-07-19 21:41:24,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:41:24,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:41:24,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:41:24,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:41:24,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24" (1/1) ... [2020-07-19 21:41:24,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24" (1/1) ... [2020-07-19 21:41:24,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24" (1/1) ... [2020-07-19 21:41:24,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24" (1/1) ... [2020-07-19 21:41:24,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24" (1/1) ... [2020-07-19 21:41:24,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24" (1/1) ... [2020-07-19 21:41:24,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24" (1/1) ... [2020-07-19 21:41:24,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:41:24,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:41:24,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:41:24,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:41:24,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24" (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 [2020-07-19 21:41:24,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:41:24,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:41:24,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:41:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:41:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:41:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:41:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:41:24,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:41:24,905 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:41:24,906 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-07-19 21:41:24,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:41:24 BoogieIcfgContainer [2020-07-19 21:41:24,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:41:24,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:41:24,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:41:24,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:41:24,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:41:23" (1/3) ... [2020-07-19 21:41:24,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a14e84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:41:24, skipping insertion in model container [2020-07-19 21:41:24,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:41:24" (2/3) ... [2020-07-19 21:41:24,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a14e84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:41:24, skipping insertion in model container [2020-07-19 21:41:24,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:41:24" (3/3) ... [2020-07-19 21:41:24,926 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-07-19 21:41:24,937 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:41:24,948 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:41:24,964 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:41:24,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:41:24,997 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:41:24,997 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:41:24,997 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:41:24,997 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:41:24,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:41:24,998 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:41:24,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:41:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-07-19 21:41:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 21:41:25,034 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:25,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:41:25,036 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash -105811556, now seen corresponding path program 1 times [2020-07-19 21:41:25,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:25,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288954833] [2020-07-19 21:41:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:41:25,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288954833] [2020-07-19 21:41:25,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:25,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:41:25,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387717506] [2020-07-19 21:41:25,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:41:25,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:25,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:41:25,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:41:25,314 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-07-19 21:41:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:25,391 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2020-07-19 21:41:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:41:25,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-19 21:41:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:25,411 INFO L225 Difference]: With dead ends: 160 [2020-07-19 21:41:25,412 INFO L226 Difference]: Without dead ends: 78 [2020-07-19 21:41:25,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:41:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-19 21:41:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-19 21:41:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-19 21:41:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2020-07-19 21:41:25,483 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2020-07-19 21:41:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:25,483 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2020-07-19 21:41:25,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:41:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2020-07-19 21:41:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 21:41:25,486 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:25,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:41:25,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:41:25,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:25,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:25,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1547300989, now seen corresponding path program 1 times [2020-07-19 21:41:25,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:25,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775639330] [2020-07-19 21:41:25,489 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:41:25,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775639330] [2020-07-19 21:41:25,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:25,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:25,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558086863] [2020-07-19 21:41:25,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:25,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:25,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:25,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:25,601 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand 4 states. [2020-07-19 21:41:26,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:26,045 INFO L93 Difference]: Finished difference Result 153 states and 224 transitions. [2020-07-19 21:41:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:26,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-19 21:41:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:26,049 INFO L225 Difference]: With dead ends: 153 [2020-07-19 21:41:26,049 INFO L226 Difference]: Without dead ends: 81 [2020-07-19 21:41:26,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:26,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-19 21:41:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-19 21:41:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-19 21:41:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2020-07-19 21:41:26,069 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 14 [2020-07-19 21:41:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:26,069 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2020-07-19 21:41:26,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2020-07-19 21:41:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 21:41:26,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:26,072 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:41:26,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:41:26,072 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:26,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:26,073 INFO L82 PathProgramCache]: Analyzing trace with hash 555004895, now seen corresponding path program 1 times [2020-07-19 21:41:26,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:26,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884516160] [2020-07-19 21:41:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:41:26,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884516160] [2020-07-19 21:41:26,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:26,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:26,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288909943] [2020-07-19 21:41:26,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:26,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:26,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:26,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:26,232 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand 4 states. [2020-07-19 21:41:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:26,379 INFO L93 Difference]: Finished difference Result 146 states and 213 transitions. [2020-07-19 21:41:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:26,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-19 21:41:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:26,381 INFO L225 Difference]: With dead ends: 146 [2020-07-19 21:41:26,381 INFO L226 Difference]: Without dead ends: 72 [2020-07-19 21:41:26,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-19 21:41:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-19 21:41:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-19 21:41:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2020-07-19 21:41:26,411 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 19 [2020-07-19 21:41:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:26,414 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2020-07-19 21:41:26,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2020-07-19 21:41:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 21:41:26,416 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:26,416 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:41:26,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:41:26,416 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:26,417 INFO L82 PathProgramCache]: Analyzing trace with hash -624681896, now seen corresponding path program 1 times [2020-07-19 21:41:26,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:26,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019183851] [2020-07-19 21:41:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:41:26,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019183851] [2020-07-19 21:41:26,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:26,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:26,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572307341] [2020-07-19 21:41:26,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:26,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:26,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:26,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:26,533 INFO L87 Difference]: Start difference. First operand 72 states and 102 transitions. Second operand 4 states. [2020-07-19 21:41:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:26,852 INFO L93 Difference]: Finished difference Result 192 states and 280 transitions. [2020-07-19 21:41:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:26,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-19 21:41:26,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:26,856 INFO L225 Difference]: With dead ends: 192 [2020-07-19 21:41:26,856 INFO L226 Difference]: Without dead ends: 122 [2020-07-19 21:41:26,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-19 21:41:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2020-07-19 21:41:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-19 21:41:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2020-07-19 21:41:26,892 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 22 [2020-07-19 21:41:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:26,893 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2020-07-19 21:41:26,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2020-07-19 21:41:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-19 21:41:26,895 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:26,895 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:41:26,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 21:41:26,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:26,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1531598883, now seen corresponding path program 1 times [2020-07-19 21:41:26,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:26,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181283057] [2020-07-19 21:41:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:41:26,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181283057] [2020-07-19 21:41:26,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:26,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:26,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105178669] [2020-07-19 21:41:26,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:26,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:26,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:26,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:26,957 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand 4 states. [2020-07-19 21:41:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:27,178 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2020-07-19 21:41:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:27,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-19 21:41:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:27,182 INFO L225 Difference]: With dead ends: 183 [2020-07-19 21:41:27,182 INFO L226 Difference]: Without dead ends: 87 [2020-07-19 21:41:27,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-19 21:41:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-07-19 21:41:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-19 21:41:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2020-07-19 21:41:27,218 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 23 [2020-07-19 21:41:27,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:27,219 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2020-07-19 21:41:27,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2020-07-19 21:41:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-19 21:41:27,221 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:27,221 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:41:27,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 21:41:27,226 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:27,227 INFO L82 PathProgramCache]: Analyzing trace with hash -576284788, now seen corresponding path program 1 times [2020-07-19 21:41:27,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:27,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600349252] [2020-07-19 21:41:27,228 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 21:41:27,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600349252] [2020-07-19 21:41:27,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:27,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:27,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764503586] [2020-07-19 21:41:27,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:27,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:27,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:27,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:27,301 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand 4 states. [2020-07-19 21:41:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:27,447 INFO L93 Difference]: Finished difference Result 134 states and 190 transitions. [2020-07-19 21:41:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:27,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-07-19 21:41:27,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:27,450 INFO L225 Difference]: With dead ends: 134 [2020-07-19 21:41:27,451 INFO L226 Difference]: Without dead ends: 70 [2020-07-19 21:41:27,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-19 21:41:27,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-19 21:41:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-19 21:41:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-07-19 21:41:27,461 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 29 [2020-07-19 21:41:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:27,462 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-07-19 21:41:27,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:27,463 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-07-19 21:41:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 21:41:27,464 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:27,465 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:41:27,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 21:41:27,465 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:27,466 INFO L82 PathProgramCache]: Analyzing trace with hash -31288535, now seen corresponding path program 1 times [2020-07-19 21:41:27,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:27,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128754091] [2020-07-19 21:41:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 21:41:27,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128754091] [2020-07-19 21:41:27,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:27,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:27,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006827723] [2020-07-19 21:41:27,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:27,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:27,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:27,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:27,537 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 4 states. [2020-07-19 21:41:27,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:27,803 INFO L93 Difference]: Finished difference Result 158 states and 228 transitions. [2020-07-19 21:41:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:27,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-19 21:41:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:27,806 INFO L225 Difference]: With dead ends: 158 [2020-07-19 21:41:27,806 INFO L226 Difference]: Without dead ends: 111 [2020-07-19 21:41:27,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-19 21:41:27,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-07-19 21:41:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-07-19 21:41:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2020-07-19 21:41:27,825 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 30 [2020-07-19 21:41:27,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:27,826 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2020-07-19 21:41:27,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:27,826 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2020-07-19 21:41:27,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-19 21:41:27,831 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:27,833 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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] [2020-07-19 21:41:27,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 21:41:27,833 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash 180888733, now seen corresponding path program 1 times [2020-07-19 21:41:27,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:27,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784717467] [2020-07-19 21:41:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 21:41:27,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784717467] [2020-07-19 21:41:27,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:27,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:27,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418909446] [2020-07-19 21:41:27,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:27,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:27,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:27,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:27,897 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand 4 states. [2020-07-19 21:41:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:28,067 INFO L93 Difference]: Finished difference Result 166 states and 232 transitions. [2020-07-19 21:41:28,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:28,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-19 21:41:28,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:28,070 INFO L225 Difference]: With dead ends: 166 [2020-07-19 21:41:28,070 INFO L226 Difference]: Without dead ends: 92 [2020-07-19 21:41:28,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-19 21:41:28,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-07-19 21:41:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-19 21:41:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2020-07-19 21:41:28,081 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 31 [2020-07-19 21:41:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:28,082 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2020-07-19 21:41:28,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2020-07-19 21:41:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-19 21:41:28,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:28,084 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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] [2020-07-19 21:41:28,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-19 21:41:28,085 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash 317242888, now seen corresponding path program 1 times [2020-07-19 21:41:28,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:28,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049516394] [2020-07-19 21:41:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 21:41:28,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049516394] [2020-07-19 21:41:28,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:28,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:28,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247768844] [2020-07-19 21:41:28,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:28,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:28,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:28,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:28,160 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand 4 states. [2020-07-19 21:41:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:28,316 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2020-07-19 21:41:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:28,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-19 21:41:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:28,318 INFO L225 Difference]: With dead ends: 139 [2020-07-19 21:41:28,318 INFO L226 Difference]: Without dead ends: 72 [2020-07-19 21:41:28,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-19 21:41:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-19 21:41:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-19 21:41:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-07-19 21:41:28,331 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 31 [2020-07-19 21:41:28,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:28,334 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-07-19 21:41:28,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:28,335 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-07-19 21:41:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-19 21:41:28,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:28,340 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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] [2020-07-19 21:41:28,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-19 21:41:28,341 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:28,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:28,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1695196396, now seen corresponding path program 1 times [2020-07-19 21:41:28,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:28,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697302091] [2020-07-19 21:41:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 21:41:28,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697302091] [2020-07-19 21:41:28,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:28,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:28,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55280969] [2020-07-19 21:41:28,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:28,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:28,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:28,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:28,468 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 4 states. [2020-07-19 21:41:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:28,638 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-07-19 21:41:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:28,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-07-19 21:41:28,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:28,641 INFO L225 Difference]: With dead ends: 74 [2020-07-19 21:41:28,641 INFO L226 Difference]: Without dead ends: 70 [2020-07-19 21:41:28,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:28,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-19 21:41:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-19 21:41:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-19 21:41:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2020-07-19 21:41:28,662 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 32 [2020-07-19 21:41:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:28,663 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2020-07-19 21:41:28,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2020-07-19 21:41:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-19 21:41:28,667 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:41:28,667 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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, 1] [2020-07-19 21:41:28,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-19 21:41:28,668 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:41:28,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:41:28,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1000030502, now seen corresponding path program 1 times [2020-07-19 21:41:28,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:41:28,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144538894] [2020-07-19 21:41:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@605339a [2020-07-19 21:41:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:41:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 21:41:28,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144538894] [2020-07-19 21:41:28,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:41:28,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:41:28,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5584556] [2020-07-19 21:41:28,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:41:28,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:41:28,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:41:28,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:41:28,773 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 4 states. [2020-07-19 21:41:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:41:28,918 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2020-07-19 21:41:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:41:28,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-07-19 21:41:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:41:28,919 INFO L225 Difference]: With dead ends: 111 [2020-07-19 21:41:28,919 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 21:41:28,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:41:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 21:41:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 21:41:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 21:41:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 21:41:28,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-07-19 21:41:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:41:28,922 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 21:41:28,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:41:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 21:41:28,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 21:41:28,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-19 21:41:28,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 21:41:29,121 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-19 21:41:29,122 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|) (= ~m_update~0 |old(~m_update~0)|)) [2020-07-19 21:41:29,122 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:41:29,122 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:41:29,122 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 21:41:29,122 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 21:41:29,122 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 21:41:29,123 INFO L268 CegarLoopResult]: For program point L316(lines 316 331) no Hoare annotation was computed. [2020-07-19 21:41:29,123 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-07-19 21:41:29,123 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-07-19 21:41:29,123 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-07-19 21:41:29,123 INFO L268 CegarLoopResult]: For program point L184(lines 184 199) no Hoare annotation was computed. [2020-07-19 21:41:29,123 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-07-19 21:41:29,123 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-07-19 21:41:29,124 INFO L268 CegarLoopResult]: For program point L300(lines 300 315) no Hoare annotation was computed. [2020-07-19 21:41:29,124 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-07-19 21:41:29,124 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-07-19 21:41:29,124 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-07-19 21:41:29,124 INFO L268 CegarLoopResult]: For program point L284(lines 284 299) no Hoare annotation was computed. [2020-07-19 21:41:29,124 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-07-19 21:41:29,125 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-07-19 21:41:29,125 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-07-19 21:41:29,125 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-07-19 21:41:29,125 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-07-19 21:41:29,125 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-07-19 21:41:29,125 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-07-19 21:41:29,125 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-07-19 21:41:29,125 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-07-19 21:41:29,125 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-07-19 21:41:29,126 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-07-19 21:41:29,126 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-07-19 21:41:29,126 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-07-19 21:41:29,126 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (and (= 0 main_~q~0) (<= main_~this_state~0 0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-07-19 21:41:29,126 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-07-19 21:41:29,126 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-07-19 21:41:29,127 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-07-19 21:41:29,127 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-07-19 21:41:29,127 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-07-19 21:41:29,127 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-07-19 21:41:29,127 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-07-19 21:41:29,127 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-07-19 21:41:29,127 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-07-19 21:41:29,128 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-07-19 21:41:29,128 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-07-19 21:41:29,128 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-07-19 21:41:29,128 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-07-19 21:41:29,128 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-07-19 21:41:29,128 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-07-19 21:41:29,128 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-07-19 21:41:29,129 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-07-19 21:41:29,129 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-07-19 21:41:29,129 INFO L268 CegarLoopResult]: For program point L28(lines 28 43) no Hoare annotation was computed. [2020-07-19 21:41:29,129 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-07-19 21:41:29,129 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-07-19 21:41:29,130 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-07-19 21:41:29,130 INFO L268 CegarLoopResult]: For program point L80(lines 80 95) no Hoare annotation was computed. [2020-07-19 21:41:29,130 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-07-19 21:41:29,130 INFO L268 CegarLoopResult]: For program point L64(lines 64 79) no Hoare annotation was computed. [2020-07-19 21:41:29,130 INFO L268 CegarLoopResult]: For program point L48(lines 48 63) no Hoare annotation was computed. [2020-07-19 21:41:29,130 INFO L268 CegarLoopResult]: For program point L164(lines 164 179) no Hoare annotation was computed. [2020-07-19 21:41:29,130 INFO L268 CegarLoopResult]: For program point L148(lines 148 163) no Hoare annotation was computed. [2020-07-19 21:41:29,131 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-07-19 21:41:29,131 INFO L268 CegarLoopResult]: For program point L264(lines 264 279) no Hoare annotation was computed. [2020-07-19 21:41:29,131 INFO L268 CegarLoopResult]: For program point L132(lines 132 147) no Hoare annotation was computed. [2020-07-19 21:41:29,131 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-07-19 21:41:29,131 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-07-19 21:41:29,131 INFO L268 CegarLoopResult]: For program point L248(lines 248 263) no Hoare annotation was computed. [2020-07-19 21:41:29,131 INFO L268 CegarLoopResult]: For program point L116(lines 116 131) no Hoare annotation was computed. [2020-07-19 21:41:29,132 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-07-19 21:41:29,132 INFO L268 CegarLoopResult]: For program point L364(lines 364 379) no Hoare annotation was computed. [2020-07-19 21:41:29,132 INFO L268 CegarLoopResult]: For program point L232(lines 232 247) no Hoare annotation was computed. [2020-07-19 21:41:29,132 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-07-19 21:41:29,132 INFO L268 CegarLoopResult]: For program point L100(lines 100 115) no Hoare annotation was computed. [2020-07-19 21:41:29,132 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-19 21:41:29,133 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and (= 0 main_~q~0) .cse0) (and (= 3 main_~q~0) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) (and .cse0 (= 2 main_~q~0)))) [2020-07-19 21:41:29,133 INFO L268 CegarLoopResult]: For program point L348(lines 348 363) no Hoare annotation was computed. [2020-07-19 21:41:29,133 INFO L268 CegarLoopResult]: For program point L216(lines 216 231) no Hoare annotation was computed. [2020-07-19 21:41:29,133 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-07-19 21:41:29,133 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-07-19 21:41:29,133 INFO L268 CegarLoopResult]: For program point L332(lines 332 347) no Hoare annotation was computed. [2020-07-19 21:41:29,134 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-07-19 21:41:29,134 INFO L268 CegarLoopResult]: For program point L200(lines 200 215) no Hoare annotation was computed. [2020-07-19 21:41:29,134 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-07-19 21:41:29,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:41:29 BoogieIcfgContainer [2020-07-19 21:41:29,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:41:29,160 INFO L168 Benchmark]: Toolchain (without parser) took 5636.78 ms. Allocated memory was 145.2 MB in the beginning and 249.0 MB in the end (delta: 103.8 MB). Free memory was 102.9 MB in the beginning and 180.1 MB in the end (delta: -77.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:41:29,161 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 21:41:29,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.14 ms. Allocated memory is still 145.2 MB. Free memory was 102.7 MB in the beginning and 90.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:41:29,163 INFO L168 Benchmark]: Boogie Preprocessor took 159.62 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 90.1 MB in the beginning and 179.3 MB in the end (delta: -89.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:41:29,164 INFO L168 Benchmark]: RCFGBuilder took 724.72 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 150.6 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-07-19 21:41:29,165 INFO L168 Benchmark]: TraceAbstraction took 4242.65 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 150.6 MB in the beginning and 180.1 MB in the end (delta: -29.5 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:41:29,170 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 503.14 ms. Allocated memory is still 145.2 MB. Free memory was 102.7 MB in the beginning and 90.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.62 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 90.1 MB in the beginning and 179.3 MB in the end (delta: -89.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 724.72 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 150.6 MB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4242.65 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 150.6 MB in the beginning and 180.1 MB in the end (delta: -29.5 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: 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: 22]: Loop Invariant Derived loop invariant: (((0 == q && this_state <= 0) || (3 == q && 2 == this_state)) || (4 <= q && 3 == this_state)) || (this_state <= 0 && 2 == q) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (0 == q && this_state <= 0) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1008 SDtfs, 1441 SDslu, 73 SDs, 0 SdLazy, 634 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 67 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 153 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 15354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 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...