/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:24:33,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:24:33,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:24:33,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:24:33,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:24:33,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:24:33,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:24:33,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:24:33,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:24:33,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:24:33,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:24:33,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:24:33,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:24:33,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:24:33,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:24:33,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:24:33,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:24:33,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:24:33,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:24:33,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:24:33,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:24:33,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:24:33,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:24:33,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:24:33,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:24:33,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:24:33,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:24:33,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:24:33,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:24:33,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 06:24:33,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:24:33,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:24:33,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:24:33,708 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 [2020-08-22 06:24:33,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:24:33,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:24:33,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:24:33,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:24:33,735 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:24:33,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:24:33,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:24:33,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:24:33,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:24:33,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:24:33,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:24:33,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:24:33,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:24:33,736 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:24:33,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:24:33,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:24:33,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:24:33,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:24:33,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:24:33,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:24:33,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:24:33,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:24:33,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:24:33,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:24:33,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:24:33,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:24:33,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:24:33,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:24:33,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:24:33,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:24:34,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:24:34,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:24:34,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:24:34,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:24:34,090 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:24:34,090 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-08-22 06:24:34,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/077210157/559f7e35d2ef44e283de136574a882a0/FLAGc8b9cbc5e [2020-08-22 06:24:34,589 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:24:34,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-08-22 06:24:34,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/077210157/559f7e35d2ef44e283de136574a882a0/FLAGc8b9cbc5e [2020-08-22 06:24:34,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/077210157/559f7e35d2ef44e283de136574a882a0 [2020-08-22 06:24:34,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:24:34,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:24:34,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:24:34,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:24:34,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:24:34,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:24:34" (1/1) ... [2020-08-22 06:24:34,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5955ed45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:34, skipping insertion in model container [2020-08-22 06:24:34,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:24:34" (1/1) ... [2020-08-22 06:24:34,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:24:34,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:24:35,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:24:35,181 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:24:35,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:24:35,221 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:24:35,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35 WrapperNode [2020-08-22 06:24:35,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:24:35,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:24:35,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:24:35,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:24:35,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35" (1/1) ... [2020-08-22 06:24:35,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35" (1/1) ... [2020-08-22 06:24:35,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35" (1/1) ... [2020-08-22 06:24:35,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35" (1/1) ... [2020-08-22 06:24:35,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35" (1/1) ... [2020-08-22 06:24:35,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35" (1/1) ... [2020-08-22 06:24:35,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35" (1/1) ... [2020-08-22 06:24:35,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:24:35,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:24:35,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:24:35,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:24:35,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35" (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 [2020-08-22 06:24:35,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:24:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:24:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:24:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:24:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:24:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:24:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:24:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:24:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:24:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:24:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:24:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:24:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:24:35,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:24:35,725 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 06:24:35,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:24:35 BoogieIcfgContainer [2020-08-22 06:24:35,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:24:35,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:24:35,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:24:35,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:24:35,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:24:34" (1/3) ... [2020-08-22 06:24:35,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20825d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:24:35, skipping insertion in model container [2020-08-22 06:24:35,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:24:35" (2/3) ... [2020-08-22 06:24:35,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20825d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:24:35, skipping insertion in model container [2020-08-22 06:24:35,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:24:35" (3/3) ... [2020-08-22 06:24:35,751 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2020-08-22 06:24:35,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:24:35,772 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:24:35,802 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:24:35,828 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:24:35,828 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:24:35,828 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:24:35,828 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:24:35,828 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:24:35,829 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:24:35,829 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:24:35,829 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:24:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-08-22 06:24:35,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 06:24:35,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:35,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:24:35,858 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:35,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:35,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1626077920, now seen corresponding path program 1 times [2020-08-22 06:24:35,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:35,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338624314] [2020-08-22 06:24:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:24:36,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338624314] [2020-08-22 06:24:36,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:36,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:24:36,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135004427] [2020-08-22 06:24:36,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:24:36,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:36,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:24:36,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:24:36,114 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 5 states. [2020-08-22 06:24:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:36,337 INFO L93 Difference]: Finished difference Result 111 states and 206 transitions. [2020-08-22 06:24:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:24:36,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 06:24:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:36,353 INFO L225 Difference]: With dead ends: 111 [2020-08-22 06:24:36,354 INFO L226 Difference]: Without dead ends: 63 [2020-08-22 06:24:36,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:24:36,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-22 06:24:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-08-22 06:24:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 06:24:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2020-08-22 06:24:36,429 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 16 [2020-08-22 06:24:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:36,430 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2020-08-22 06:24:36,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:24:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2020-08-22 06:24:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 06:24:36,432 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:36,432 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] [2020-08-22 06:24:36,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:24:36,433 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1393145919, now seen corresponding path program 1 times [2020-08-22 06:24:36,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:36,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579408398] [2020-08-22 06:24:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:24:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:24:36,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579408398] [2020-08-22 06:24:36,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:36,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:24:36,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972797387] [2020-08-22 06:24:36,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:24:36,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:36,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:24:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:24:36,552 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand 6 states. [2020-08-22 06:24:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:36,760 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-08-22 06:24:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:24:36,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-08-22 06:24:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:36,764 INFO L225 Difference]: With dead ends: 62 [2020-08-22 06:24:36,764 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 06:24:36,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:24:36,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 06:24:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-22 06:24:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 06:24:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2020-08-22 06:24:36,782 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 21 [2020-08-22 06:24:36,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:36,783 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2020-08-22 06:24:36,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:24:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2020-08-22 06:24:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 06:24:36,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:36,785 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1, 1] [2020-08-22 06:24:36,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:24:36,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:36,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:36,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1101915893, now seen corresponding path program 1 times [2020-08-22 06:24:36,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:36,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531716280] [2020-08-22 06:24:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:24:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 06:24:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 06:24:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 06:24:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 06:24:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:24:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-22 06:24:36,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531716280] [2020-08-22 06:24:36,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:36,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:24:36,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870195732] [2020-08-22 06:24:36,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:24:36,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:36,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:24:36,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:24:36,950 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand 3 states. [2020-08-22 06:24:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:36,984 INFO L93 Difference]: Finished difference Result 89 states and 122 transitions. [2020-08-22 06:24:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:24:36,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-08-22 06:24:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:36,986 INFO L225 Difference]: With dead ends: 89 [2020-08-22 06:24:36,986 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 06:24:36,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:24:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 06:24:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-22 06:24:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 06:24:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-08-22 06:24:37,000 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 50 [2020-08-22 06:24:37,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:37,000 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-08-22 06:24:37,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:24:37,001 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-08-22 06:24:37,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 06:24:37,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:37,003 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2020-08-22 06:24:37,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:24:37,003 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:37,004 INFO L82 PathProgramCache]: Analyzing trace with hash 668905142, now seen corresponding path program 1 times [2020-08-22 06:24:37,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:37,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294754472] [2020-08-22 06:24:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:24:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 06:24:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 06:24:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 06:24:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:24:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:24:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-08-22 06:24:37,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294754472] [2020-08-22 06:24:37,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:37,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:24:37,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306548680] [2020-08-22 06:24:37,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:24:37,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:37,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:24:37,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:24:37,138 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2020-08-22 06:24:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:37,299 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2020-08-22 06:24:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:24:37,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-08-22 06:24:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:37,302 INFO L225 Difference]: With dead ends: 67 [2020-08-22 06:24:37,302 INFO L226 Difference]: Without dead ends: 65 [2020-08-22 06:24:37,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:24:37,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-22 06:24:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-08-22 06:24:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-22 06:24:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-08-22 06:24:37,315 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 51 [2020-08-22 06:24:37,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:37,315 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-08-22 06:24:37,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:24:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-08-22 06:24:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-22 06:24:37,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:37,318 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:24:37,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:24:37,319 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:37,319 INFO L82 PathProgramCache]: Analyzing trace with hash -702087769, now seen corresponding path program 1 times [2020-08-22 06:24:37,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:37,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286686326] [2020-08-22 06:24:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:24:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 06:24:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 06:24:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 06:24:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:24:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:24:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 06:24:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 06:24:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:24:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:24:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 06:24:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 06:24:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-08-22 06:24:37,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286686326] [2020-08-22 06:24:37,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:37,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:24:37,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71981330] [2020-08-22 06:24:37,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:24:37,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:37,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:24:37,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:24:37,462 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 7 states. [2020-08-22 06:24:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:37,571 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-08-22 06:24:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:24:37,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-08-22 06:24:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:37,574 INFO L225 Difference]: With dead ends: 83 [2020-08-22 06:24:37,574 INFO L226 Difference]: Without dead ends: 81 [2020-08-22 06:24:37,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:24:37,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-22 06:24:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-08-22 06:24:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 06:24:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2020-08-22 06:24:37,588 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 86 [2020-08-22 06:24:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:37,589 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2020-08-22 06:24:37,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:24:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2020-08-22 06:24:37,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 06:24:37,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:37,592 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 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, 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] [2020-08-22 06:24:37,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:24:37,592 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:37,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:37,593 INFO L82 PathProgramCache]: Analyzing trace with hash 58209754, now seen corresponding path program 1 times [2020-08-22 06:24:37,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:37,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754734629] [2020-08-22 06:24:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:24:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 06:24:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 06:24:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 06:24:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:24:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:24:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 06:24:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 06:24:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:24:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:24:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 06:24:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 06:24:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 06:24:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-22 06:24:37,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754734629] [2020-08-22 06:24:37,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:37,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:24:37,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303181391] [2020-08-22 06:24:37,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:24:37,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:37,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:24:37,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:24:37,715 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand 6 states. [2020-08-22 06:24:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:37,819 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2020-08-22 06:24:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:24:37,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-08-22 06:24:37,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:37,821 INFO L225 Difference]: With dead ends: 81 [2020-08-22 06:24:37,822 INFO L226 Difference]: Without dead ends: 79 [2020-08-22 06:24:37,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:24:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-22 06:24:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-08-22 06:24:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-22 06:24:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-08-22 06:24:37,834 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 91 [2020-08-22 06:24:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:37,835 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-08-22 06:24:37,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:24:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-08-22 06:24:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-08-22 06:24:37,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:24:37,841 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1] [2020-08-22 06:24:37,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:24:37,841 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:24:37,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:24:37,842 INFO L82 PathProgramCache]: Analyzing trace with hash 299780712, now seen corresponding path program 1 times [2020-08-22 06:24:37,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:24:37,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135760102] [2020-08-22 06:24:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:24:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:24:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:24:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 06:24:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 06:24:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 06:24:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:24:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 06:24:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 06:24:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 06:24:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:24:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:24:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:38,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 06:24:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 06:24:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:38,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 06:24:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 06:24:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:38,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 06:24:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:24:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:38,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 06:24:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 06:24:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:24:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2020-08-22 06:24:38,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135760102] [2020-08-22 06:24:38,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:24:38,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:24:38,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423709517] [2020-08-22 06:24:38,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:24:38,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:24:38,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:24:38,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:24:38,044 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 6 states. [2020-08-22 06:24:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:24:38,158 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2020-08-22 06:24:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:24:38,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-08-22 06:24:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:24:38,162 INFO L225 Difference]: With dead ends: 82 [2020-08-22 06:24:38,162 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 06:24:38,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:24:38,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 06:24:38,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 06:24:38,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 06:24:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 06:24:38,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-08-22 06:24:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:24:38,170 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 06:24:38,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:24:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 06:24:38,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 06:24:38,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:24:38,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 06:24:38,708 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 06:24:38,709 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 06:24:38,709 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 06:24:38,709 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 06:24:38,709 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 06:24:38,709 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 06:24:38,709 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 06:24:38,709 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 06:24:38,710 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-22 06:24:38,710 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 06:24:38,710 INFO L264 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,710 INFO L264 CegarLoopResult]: At program point L60-1(line 60) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,711 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 72) no Hoare annotation was computed. [2020-08-22 06:24:38,711 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (= main_~c~0 0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,711 INFO L264 CegarLoopResult]: At program point L52-1(line 52) the Hoare annotation is: (and (= main_~c~0 0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,711 INFO L264 CegarLoopResult]: At program point L36-1(lines 35 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,711 INFO L264 CegarLoopResult]: At program point L36-2(lines 36 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,712 INFO L264 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,712 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,712 INFO L264 CegarLoopResult]: At program point L45-1(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,712 INFO L271 CegarLoopResult]: At program point L70(lines 14 72) the Hoare annotation is: true [2020-08-22 06:24:38,712 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-08-22 06:24:38,713 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,715 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-08-22 06:24:38,716 INFO L264 CegarLoopResult]: At program point L54-1(lines 53 66) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 (<= (+ main_~c~0 1) main_~tokenlen~0) .cse2) (and (= main_~c~0 0) .cse0 .cse1 .cse2))) [2020-08-22 06:24:38,716 INFO L268 CegarLoopResult]: For program point L46(lines 33 69) no Hoare annotation was computed. [2020-08-22 06:24:38,716 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 72) no Hoare annotation was computed. [2020-08-22 06:24:38,717 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,717 INFO L264 CegarLoopResult]: At program point L38-1(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,717 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 72) the Hoare annotation is: true [2020-08-22 06:24:38,717 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-08-22 06:24:38,717 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-08-22 06:24:38,717 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,717 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,718 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse3 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= main_~c~0 0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2020-08-22 06:24:38,718 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-22 06:24:38,718 INFO L264 CegarLoopResult]: At program point L56-1(line 56) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse3 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= main_~c~0 0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2020-08-22 06:24:38,718 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-08-22 06:24:38,718 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-08-22 06:24:38,719 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-08-22 06:24:38,719 INFO L268 CegarLoopResult]: For program point L24-1(lines 14 72) no Hoare annotation was computed. [2020-08-22 06:24:38,719 INFO L268 CegarLoopResult]: For program point L33(lines 33 69) no Hoare annotation was computed. [2020-08-22 06:24:38,719 INFO L268 CegarLoopResult]: For program point L58(lines 58 64) no Hoare annotation was computed. [2020-08-22 06:24:38,719 INFO L268 CegarLoopResult]: For program point L25(lines 14 72) no Hoare annotation was computed. [2020-08-22 06:24:38,720 INFO L268 CegarLoopResult]: For program point L58-1(lines 58 64) no Hoare annotation was computed. [2020-08-22 06:24:38,720 INFO L268 CegarLoopResult]: For program point L50(lines 50 68) no Hoare annotation was computed. [2020-08-22 06:24:38,720 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,720 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,720 INFO L264 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-08-22 06:24:38,720 INFO L268 CegarLoopResult]: For program point L26(lines 14 72) no Hoare annotation was computed. [2020-08-22 06:24:38,721 INFO L268 CegarLoopResult]: For program point L43(lines 33 69) no Hoare annotation was computed. [2020-08-22 06:24:38,721 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 06:24:38,721 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-22 06:24:38,721 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 06:24:38,721 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-22 06:24:38,721 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-22 06:24:38,721 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-22 06:24:38,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:24:38 BoogieIcfgContainer [2020-08-22 06:24:38,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:24:38,758 INFO L168 Benchmark]: Toolchain (without parser) took 3821.78 ms. Allocated memory was 142.6 MB in the beginning and 249.0 MB in the end (delta: 106.4 MB). Free memory was 102.1 MB in the beginning and 212.7 MB in the end (delta: -110.6 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:38,765 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 142.6 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:24:38,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.10 ms. Allocated memory is still 142.6 MB. Free memory was 101.7 MB in the beginning and 91.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:38,769 INFO L168 Benchmark]: Boogie Preprocessor took 132.05 ms. Allocated memory was 142.6 MB in the beginning and 202.4 MB in the end (delta: 59.8 MB). Free memory was 91.3 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:38,770 INFO L168 Benchmark]: RCFGBuilder took 376.13 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 161.6 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:38,771 INFO L168 Benchmark]: TraceAbstraction took 3020.55 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 160.9 MB in the beginning and 212.7 MB in the end (delta: -51.7 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:24:38,782 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 142.6 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.10 ms. Allocated memory is still 142.6 MB. Free memory was 101.7 MB in the beginning and 91.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.05 ms. Allocated memory was 142.6 MB in the beginning and 202.4 MB in the end (delta: 59.8 MB). Free memory was 91.3 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.13 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 161.6 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3020.55 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 160.9 MB in the beginning and 212.7 MB in the end (delta: -51.7 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (0 < scheme + 1 && 1 <= cp) && cp < urilen - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((1 <= c && 0 < scheme + 1) && 1 <= cp) && c + 1 <= tokenlen) && cp < urilen) || (((c == 0 && 0 < scheme + 1) && 1 <= cp) && cp < urilen) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 19, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 100 SDslu, 1249 SDs, 0 SdLazy, 396 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 77 PreInvPairs, 109 NumberOfFragments, 450 HoareAnnotationTreeSize, 77 FomulaSimplifications, 362 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 26 FomulaSimplificationsInter, 155 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 435 NumberOfCodeBlocks, 435 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 48444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 1426/1426 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...