/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:34:15,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:34:15,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:34:15,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:34:15,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:34:15,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:34:15,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:34:15,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:34:15,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:34:15,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:34:15,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:34:15,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:34:15,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:34:15,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:34:15,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:34:15,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:34:15,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:34:15,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:34:15,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:34:15,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:34:15,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:34:15,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:34:15,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:34:15,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:34:15,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:34:15,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:34:15,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:34:15,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:34:15,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:34:15,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 03:34:15,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:34:15,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:34:15,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:34:15,926 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 [2020-08-19 03:34:15,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:34:15,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:34:15,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:34:15,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:34:15,951 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:34:15,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:34:15,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:34:15,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:34:15,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:34:15,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:34:15,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:34:15,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:34:15,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:34:15,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:34:15,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:34:15,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:34:15,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:34:15,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:34:15,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:34:15,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:34:15,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:34:15,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:34:15,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:34:15,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:34:15,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:34:15,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:34:15,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:34:15,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:34:15,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:34:15,957 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:34:16,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:34:16,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:34:16,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:34:16,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:34:16,290 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:34:16,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-08-19 03:34:16,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fc17cb55/a47b5ed606294b24b4f59813d79e5363/FLAG5bcbc9baf [2020-08-19 03:34:16,810 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:34:16,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-08-19 03:34:16,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fc17cb55/a47b5ed606294b24b4f59813d79e5363/FLAG5bcbc9baf [2020-08-19 03:34:17,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fc17cb55/a47b5ed606294b24b4f59813d79e5363 [2020-08-19 03:34:17,223 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:34:17,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:34:17,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:34:17,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:34:17,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:34:17,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:34:17" (1/1) ... [2020-08-19 03:34:17,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53352fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17, skipping insertion in model container [2020-08-19 03:34:17,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:34:17" (1/1) ... [2020-08-19 03:34:17,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:34:17,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:34:17,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:34:17,446 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:34:17,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:34:17,478 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:34:17,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17 WrapperNode [2020-08-19 03:34:17,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:34:17,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:34:17,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:34:17,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:34:17,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17" (1/1) ... [2020-08-19 03:34:17,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17" (1/1) ... [2020-08-19 03:34:17,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17" (1/1) ... [2020-08-19 03:34:17,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17" (1/1) ... [2020-08-19 03:34:17,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17" (1/1) ... [2020-08-19 03:34:17,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17" (1/1) ... [2020-08-19 03:34:17,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17" (1/1) ... [2020-08-19 03:34:17,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:34:17,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:34:17,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:34:17,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:34:17,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17" (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 [2020-08-19 03:34:17,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:34:17,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:34:17,668 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-19 03:34:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:34:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:34:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:34:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-19 03:34:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:34:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:34:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:34:17,838 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:34:17,838 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 03:34:17,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:34:17 BoogieIcfgContainer [2020-08-19 03:34:17,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:34:17,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:34:17,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:34:17,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:34:17,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:34:17" (1/3) ... [2020-08-19 03:34:17,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e53062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:34:17, skipping insertion in model container [2020-08-19 03:34:17,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:34:17" (2/3) ... [2020-08-19 03:34:17,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e53062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:34:17, skipping insertion in model container [2020-08-19 03:34:17,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:34:17" (3/3) ... [2020-08-19 03:34:17,852 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2020-08-19 03:34:17,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:34:17,870 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:34:17,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:34:17,912 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:34:17,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:34:17,912 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:34:17,913 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:34:17,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:34:17,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:34:17,913 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:34:17,913 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:34:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-19 03:34:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 03:34:17,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:17,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:34:17,940 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2020-08-19 03:34:17,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:17,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779560449] [2020-08-19 03:34:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:34:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:34:18,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779560449] [2020-08-19 03:34:18,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:34:18,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:34:18,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462774138] [2020-08-19 03:34:18,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:34:18,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:18,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:34:18,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:34:18,234 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-08-19 03:34:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:34:18,432 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-08-19 03:34:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:34:18,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 03:34:18,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:34:18,446 INFO L225 Difference]: With dead ends: 30 [2020-08-19 03:34:18,446 INFO L226 Difference]: Without dead ends: 18 [2020-08-19 03:34:18,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:34:18,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-19 03:34:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-19 03:34:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-19 03:34:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-08-19 03:34:18,502 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-08-19 03:34:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:34:18,503 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-08-19 03:34:18,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:34:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-08-19 03:34:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:34:18,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:18,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:34:18,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:34:18,507 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:18,508 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2020-08-19 03:34:18,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:18,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546794710] [2020-08-19 03:34:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:34:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 03:34:18,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546794710] [2020-08-19 03:34:18,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:34:18,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 03:34:18,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173485368] [2020-08-19 03:34:18,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:34:18,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:18,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:34:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:34:18,643 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-08-19 03:34:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:34:18,705 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-08-19 03:34:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 03:34:18,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-19 03:34:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:34:18,708 INFO L225 Difference]: With dead ends: 25 [2020-08-19 03:34:18,708 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 03:34:18,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:34:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 03:34:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-19 03:34:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 03:34:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-08-19 03:34:18,717 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-08-19 03:34:18,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:34:18,718 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-08-19 03:34:18,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:34:18,718 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-08-19 03:34:18,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 03:34:18,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:18,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:34:18,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:34:18,721 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:18,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:18,721 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2020-08-19 03:34:18,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:18,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094249488] [2020-08-19 03:34:18,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:34:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 03:34:18,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094249488] [2020-08-19 03:34:18,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:34:18,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 03:34:18,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321438145] [2020-08-19 03:34:18,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:34:18,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:18,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:34:18,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:34:18,877 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2020-08-19 03:34:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:34:18,946 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-08-19 03:34:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:34:18,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-08-19 03:34:18,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:34:18,948 INFO L225 Difference]: With dead ends: 28 [2020-08-19 03:34:18,948 INFO L226 Difference]: Without dead ends: 24 [2020-08-19 03:34:18,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:34:18,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-19 03:34:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-19 03:34:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 03:34:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-19 03:34:18,956 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-08-19 03:34:18,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:34:18,957 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-19 03:34:18,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:34:18,957 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-19 03:34:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 03:34:18,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:18,959 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:34:18,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:34:18,959 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2020-08-19 03:34:18,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:18,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739881325] [2020-08-19 03:34:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:18,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:34:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 03:34:19,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739881325] [2020-08-19 03:34:19,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:34:19,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 03:34:19,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851651262] [2020-08-19 03:34:19,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:34:19,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:19,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:34:19,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:34:19,167 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-08-19 03:34:19,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:34:19,257 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-19 03:34:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:34:19,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-19 03:34:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:34:19,260 INFO L225 Difference]: With dead ends: 31 [2020-08-19 03:34:19,260 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 03:34:19,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:34:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 03:34:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-19 03:34:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-19 03:34:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-08-19 03:34:19,283 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-08-19 03:34:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:34:19,283 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-08-19 03:34:19,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:34:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-08-19 03:34:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 03:34:19,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:19,285 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:34:19,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:34:19,286 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:19,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:19,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1080764669, now seen corresponding path program 4 times [2020-08-19 03:34:19,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:19,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172537291] [2020-08-19 03:34:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:34:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-19 03:34:19,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172537291] [2020-08-19 03:34:19,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:34:19,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 03:34:19,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25191552] [2020-08-19 03:34:19,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:34:19,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:19,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:34:19,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:34:19,578 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2020-08-19 03:34:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:34:19,666 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-08-19 03:34:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:34:19,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-08-19 03:34:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:34:19,669 INFO L225 Difference]: With dead ends: 34 [2020-08-19 03:34:19,669 INFO L226 Difference]: Without dead ends: 30 [2020-08-19 03:34:19,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:34:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-19 03:34:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-19 03:34:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 03:34:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-08-19 03:34:19,677 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-08-19 03:34:19,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:34:19,678 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-08-19 03:34:19,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:34:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-08-19 03:34:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-19 03:34:19,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:19,680 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:34:19,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:34:19,680 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:19,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:19,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1752970513, now seen corresponding path program 5 times [2020-08-19 03:34:19,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:19,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391412473] [2020-08-19 03:34:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:34:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:19,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-19 03:34:20,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391412473] [2020-08-19 03:34:20,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:34:20,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 03:34:20,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236814380] [2020-08-19 03:34:20,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 03:34:20,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:20,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 03:34:20,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:34:20,004 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 15 states. [2020-08-19 03:34:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:34:20,111 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-08-19 03:34:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:34:20,111 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-08-19 03:34:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:34:20,113 INFO L225 Difference]: With dead ends: 37 [2020-08-19 03:34:20,113 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 03:34:20,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:34:20,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 03:34:20,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-19 03:34:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 03:34:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-08-19 03:34:20,121 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-08-19 03:34:20,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:34:20,122 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-08-19 03:34:20,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 03:34:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-08-19 03:34:20,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-19 03:34:20,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:34:20,124 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:34:20,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:34:20,125 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:34:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:34:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1590630787, now seen corresponding path program 6 times [2020-08-19 03:34:20,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:34:20,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575831184] [2020-08-19 03:34:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:34:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:34:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:34:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:34:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:34:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-19 03:34:20,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575831184] [2020-08-19 03:34:20,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:34:20,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:34:20,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819850992] [2020-08-19 03:34:20,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:34:20,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:34:20,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:34:20,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:34:20,335 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-08-19 03:34:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:34:20,617 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2020-08-19 03:34:20,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:34:20,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-08-19 03:34:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:34:20,619 INFO L225 Difference]: With dead ends: 62 [2020-08-19 03:34:20,619 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:34:20,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:34:20,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:34:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:34:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:34:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:34:20,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-08-19 03:34:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:34:20,624 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:34:20,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:34:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:34:20,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:34:20,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:34:20,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:34:20,697 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 03:34:20,697 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 03:34:20,698 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 03:34:20,698 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 03:34:20,698 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 03:34:20,699 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 03:34:20,700 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-08-19 03:34:20,701 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 15) the Hoare annotation is: true [2020-08-19 03:34:20,701 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 15) no Hoare annotation was computed. [2020-08-19 03:34:20,702 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-08-19 03:34:20,702 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-08-19 03:34:20,702 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2020-08-19 03:34:20,702 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-08-19 03:34:20,702 INFO L268 CegarLoopResult]: For program point L12-2(lines 9 15) no Hoare annotation was computed. [2020-08-19 03:34:20,705 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-19 03:34:20,706 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-19 03:34:20,706 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2020-08-19 03:34:20,706 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-08-19 03:34:20,707 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-19 03:34:20,707 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-08-19 03:34:20,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:34:20 BoogieIcfgContainer [2020-08-19 03:34:20,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:34:20,735 INFO L168 Benchmark]: Toolchain (without parser) took 3504.28 ms. Allocated memory was 137.9 MB in the beginning and 250.6 MB in the end (delta: 112.7 MB). Free memory was 101.1 MB in the beginning and 176.5 MB in the end (delta: -75.4 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:34:20,736 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:34:20,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.18 ms. Allocated memory is still 137.9 MB. Free memory was 100.7 MB in the beginning and 91.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-19 03:34:20,738 INFO L168 Benchmark]: Boogie Preprocessor took 24.34 ms. Allocated memory is still 137.9 MB. Free memory was 91.6 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:34:20,740 INFO L168 Benchmark]: RCFGBuilder took 339.06 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 90.2 MB in the beginning and 169.7 MB in the end (delta: -79.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-19 03:34:20,742 INFO L168 Benchmark]: TraceAbstraction took 2882.54 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 169.7 MB in the beginning and 176.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:34:20,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.18 ms. Allocated memory is still 137.9 MB. Free memory was 100.7 MB in the beginning and 91.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.34 ms. Allocated memory is still 137.9 MB. Free memory was 91.6 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.06 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 90.2 MB in the beginning and 169.7 MB in the end (delta: -79.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2882.54 ms. Allocated memory was 201.9 MB in the beginning and 250.6 MB in the end (delta: 48.8 MB). Free memory was 169.7 MB in the beginning and 176.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 78 SDslu, 526 SDs, 0 SdLazy, 371 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 19 NumberOfFragments, 15 HoareAnnotationTreeSize, 19 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 61 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 19008 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 192/294 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...