/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:38:46,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:38:46,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:38:46,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:38:46,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:38:46,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:38:46,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:38:46,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:38:46,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:38:46,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:38:46,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:38:46,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:38:46,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:38:46,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:38:46,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:38:46,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:38:46,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:38:46,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:38:46,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:38:46,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:38:46,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:38:46,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:38:46,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:38:46,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:38:46,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 19:38:46,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:38:46,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:38:46,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:38:46,158 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 [2020-08-18 19:38:46,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:38:46,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:38:46,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:38:46,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:38:46,183 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:38:46,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:38:46,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:38:46,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:38:46,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:38:46,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:38:46,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:38:46,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:38:46,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:38:46,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:38:46,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:38:46,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:38:46,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:38:46,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:38:46,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:38:46,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:38:46,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:38:46,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:38:46,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:38:46,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:38:46,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:38:46,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:38:46,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:38:46,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:38:46,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:38:46,188 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:38:46,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:38:46,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:38:46,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:38:46,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:38:46,514 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:38:46,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-18 19:38:46,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07e168bce/b0b4f926abad472b88e62e59e3a56f6a/FLAG316e99a47 [2020-08-18 19:38:47,048 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:38:47,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-18 19:38:47,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07e168bce/b0b4f926abad472b88e62e59e3a56f6a/FLAG316e99a47 [2020-08-18 19:38:47,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07e168bce/b0b4f926abad472b88e62e59e3a56f6a [2020-08-18 19:38:47,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:38:47,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:38:47,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:38:47,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:38:47,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:38:47,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:38:47" (1/1) ... [2020-08-18 19:38:47,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba61646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47, skipping insertion in model container [2020-08-18 19:38:47,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:38:47" (1/1) ... [2020-08-18 19:38:47,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:38:47,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:38:47,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:38:47,635 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:38:47,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:38:47,668 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:38:47,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47 WrapperNode [2020-08-18 19:38:47,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:38:47,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:38:47,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:38:47,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:38:47,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47" (1/1) ... [2020-08-18 19:38:47,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47" (1/1) ... [2020-08-18 19:38:47,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47" (1/1) ... [2020-08-18 19:38:47,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47" (1/1) ... [2020-08-18 19:38:47,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47" (1/1) ... [2020-08-18 19:38:47,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47" (1/1) ... [2020-08-18 19:38:47,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47" (1/1) ... [2020-08-18 19:38:47,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:38:47,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:38:47,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:38:47,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:38:47,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47" (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 [2020-08-18 19:38:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:38:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:38:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 19:38:47,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 19:38:47,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:38:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:38:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:38:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 19:38:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 19:38:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:38:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:38:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:38:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:38:48,070 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:38:48,071 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 19:38:48,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:38:48 BoogieIcfgContainer [2020-08-18 19:38:48,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:38:48,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:38:48,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:38:48,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:38:48,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:38:47" (1/3) ... [2020-08-18 19:38:48,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f17ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:38:48, skipping insertion in model container [2020-08-18 19:38:48,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:47" (2/3) ... [2020-08-18 19:38:48,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f17ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:38:48, skipping insertion in model container [2020-08-18 19:38:48,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:38:48" (3/3) ... [2020-08-18 19:38:48,083 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-08-18 19:38:48,094 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:38:48,108 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:38:48,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:38:48,158 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:38:48,158 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:38:48,158 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:38:48,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:38:48,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:38:48,159 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:38:48,159 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:38:48,160 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:38:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-08-18 19:38:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 19:38:48,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:48,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:48,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:48,198 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-08-18 19:38:48,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:48,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938789696] [2020-08-18 19:38:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:48,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938789696] [2020-08-18 19:38:48,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:38:48,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:38:48,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465103302] [2020-08-18 19:38:48,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:38:48,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:48,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:38:48,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:38:48,391 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-08-18 19:38:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:48,468 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-18 19:38:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:38:48,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-18 19:38:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:48,479 INFO L225 Difference]: With dead ends: 37 [2020-08-18 19:38:48,479 INFO L226 Difference]: Without dead ends: 18 [2020-08-18 19:38:48,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:38:48,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-18 19:38:48,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-18 19:38:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-18 19:38:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-08-18 19:38:48,515 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-08-18 19:38:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:48,516 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-08-18 19:38:48,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:38:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-08-18 19:38:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 19:38:48,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:48,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:48,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:38:48,518 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:48,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:48,519 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-08-18 19:38:48,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:48,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522494830] [2020-08-18 19:38:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:48,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522494830] [2020-08-18 19:38:48,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:38:48,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:38:48,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161316821] [2020-08-18 19:38:48,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:38:48,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:48,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:38:48,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:38:48,950 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 7 states. [2020-08-18 19:38:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:53,304 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-08-18 19:38:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:38:53,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-18 19:38:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:53,307 INFO L225 Difference]: With dead ends: 26 [2020-08-18 19:38:53,308 INFO L226 Difference]: Without dead ends: 21 [2020-08-18 19:38:53,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:38:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-18 19:38:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-08-18 19:38:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-18 19:38:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-08-18 19:38:53,323 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-08-18 19:38:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:53,324 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-08-18 19:38:53,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:38:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-08-18 19:38:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 19:38:53,326 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:53,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:53,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:38:53,327 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-08-18 19:38:53,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:53,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34639919] [2020-08-18 19:38:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:54,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:54,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34639919] [2020-08-18 19:38:54,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:54,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 19:38:54,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617189846] [2020-08-18 19:38:54,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:38:54,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:54,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:38:54,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:38:54,043 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 13 states. [2020-08-18 19:38:56,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:56,608 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-18 19:38:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 19:38:56,609 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-08-18 19:38:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:56,610 INFO L225 Difference]: With dead ends: 40 [2020-08-18 19:38:56,611 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 19:38:56,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-08-18 19:38:56,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 19:38:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-08-18 19:38:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-18 19:38:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-18 19:38:56,624 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-18 19:38:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:56,624 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-18 19:38:56,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:38:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-18 19:38:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 19:38:56,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:56,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:56,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:38:56,628 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:56,628 INFO L82 PathProgramCache]: Analyzing trace with hash -162414684, now seen corresponding path program 2 times [2020-08-18 19:38:56,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:56,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985706664] [2020-08-18 19:38:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:56,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985706664] [2020-08-18 19:38:56,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:56,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 19:38:56,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006698055] [2020-08-18 19:38:56,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:38:56,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:56,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:38:56,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:38:56,936 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-08-18 19:38:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:57,250 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-08-18 19:38:57,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:38:57,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-18 19:38:57,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:57,251 INFO L225 Difference]: With dead ends: 38 [2020-08-18 19:38:57,252 INFO L226 Difference]: Without dead ends: 27 [2020-08-18 19:38:57,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:38:57,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-18 19:38:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-08-18 19:38:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-18 19:38:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-18 19:38:57,262 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-08-18 19:38:57,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:57,263 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-18 19:38:57,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:38:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-18 19:38:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 19:38:57,264 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:57,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:57,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:38:57,265 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:57,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:57,265 INFO L82 PathProgramCache]: Analyzing trace with hash -444322542, now seen corresponding path program 1 times [2020-08-18 19:38:57,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:57,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846313333] [2020-08-18 19:38:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:57,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:57,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846313333] [2020-08-18 19:38:57,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:57,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-18 19:38:57,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466000727] [2020-08-18 19:38:57,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:38:57,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:57,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:38:57,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:38:57,419 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-08-18 19:38:57,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:57,522 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-18 19:38:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:38:57,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-18 19:38:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:57,524 INFO L225 Difference]: With dead ends: 38 [2020-08-18 19:38:57,524 INFO L226 Difference]: Without dead ends: 27 [2020-08-18 19:38:57,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:38:57,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-18 19:38:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-08-18 19:38:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-18 19:38:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-18 19:38:57,531 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2020-08-18 19:38:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:57,531 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-18 19:38:57,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:38:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-18 19:38:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 19:38:57,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:57,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:57,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:38:57,533 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:57,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:57,533 INFO L82 PathProgramCache]: Analyzing trace with hash -450980439, now seen corresponding path program 1 times [2020-08-18 19:38:57,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:57,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163214715] [2020-08-18 19:38:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:57,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163214715] [2020-08-18 19:38:57,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:57,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 19:38:57,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981055885] [2020-08-18 19:38:57,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:38:57,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:57,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:38:57,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:38:57,841 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-08-18 19:38:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:58,028 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-08-18 19:38:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:38:58,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-18 19:38:58,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:58,030 INFO L225 Difference]: With dead ends: 37 [2020-08-18 19:38:58,030 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 19:38:58,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:38:58,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 19:38:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-18 19:38:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-18 19:38:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-08-18 19:38:58,037 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-08-18 19:38:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:58,037 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-08-18 19:38:58,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:38:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-08-18 19:38:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 19:38:58,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:58,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:58,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:38:58,039 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:58,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:58,039 INFO L82 PathProgramCache]: Analyzing trace with hash -514824137, now seen corresponding path program 1 times [2020-08-18 19:38:58,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:58,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268861720] [2020-08-18 19:38:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:58,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:58,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268861720] [2020-08-18 19:38:58,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:58,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-18 19:38:58,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969492980] [2020-08-18 19:38:58,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:38:58,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:58,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:38:58,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:38:58,166 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-08-18 19:38:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:58,263 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-08-18 19:38:58,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:38:58,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-18 19:38:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:58,265 INFO L225 Difference]: With dead ends: 38 [2020-08-18 19:38:58,265 INFO L226 Difference]: Without dead ends: 27 [2020-08-18 19:38:58,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:38:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-18 19:38:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-08-18 19:38:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-18 19:38:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-18 19:38:58,273 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2020-08-18 19:38:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:58,274 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-18 19:38:58,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:38:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-18 19:38:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 19:38:58,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:58,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:58,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:38:58,275 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:58,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:58,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1260183225, now seen corresponding path program 1 times [2020-08-18 19:38:58,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:58,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939997235] [2020-08-18 19:38:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:58,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939997235] [2020-08-18 19:38:58,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:58,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 19:38:58,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128887066] [2020-08-18 19:38:58,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:38:59,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:59,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:38:59,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:38:59,001 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 15 states. [2020-08-18 19:38:59,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:59,751 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-18 19:38:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:38:59,753 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-08-18 19:38:59,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:59,754 INFO L225 Difference]: With dead ends: 37 [2020-08-18 19:38:59,755 INFO L226 Difference]: Without dead ends: 32 [2020-08-18 19:38:59,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-08-18 19:38:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-18 19:38:59,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-08-18 19:38:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 19:38:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-08-18 19:38:59,765 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-08-18 19:38:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:59,765 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-08-18 19:38:59,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 19:38:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-08-18 19:38:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 19:38:59,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:59,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:59,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:38:59,768 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:59,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 2 times [2020-08-18 19:38:59,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:59,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228018613] [2020-08-18 19:38:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:59,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228018613] [2020-08-18 19:38:59,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:59,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 19:38:59,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797131420] [2020-08-18 19:38:59,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:38:59,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:59,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:38:59,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:38:59,945 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-08-18 19:39:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:02,149 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-08-18 19:39:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:39:02,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-18 19:39:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:02,151 INFO L225 Difference]: With dead ends: 41 [2020-08-18 19:39:02,151 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 19:39:02,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:39:02,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 19:39:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-18 19:39:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 19:39:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-18 19:39:02,159 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2020-08-18 19:39:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:02,159 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-18 19:39:02,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:39:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-18 19:39:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 19:39:02,160 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:02,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:39:02,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:39:02,161 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:02,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1961236154, now seen corresponding path program 1 times [2020-08-18 19:39:02,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:02,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377905917] [2020-08-18 19:39:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:39:02,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377905917] [2020-08-18 19:39:02,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:39:02,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 19:39:02,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429638457] [2020-08-18 19:39:02,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:39:02,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:02,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:39:02,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:39:02,284 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-08-18 19:39:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:02,428 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-08-18 19:39:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:39:02,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-18 19:39:02,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:02,430 INFO L225 Difference]: With dead ends: 44 [2020-08-18 19:39:02,430 INFO L226 Difference]: Without dead ends: 33 [2020-08-18 19:39:02,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:39:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-18 19:39:02,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-08-18 19:39:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 19:39:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-18 19:39:02,436 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2020-08-18 19:39:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:02,437 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-18 19:39:02,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:39:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-18 19:39:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 19:39:02,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:02,438 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:39:02,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:39:02,438 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:02,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:02,439 INFO L82 PathProgramCache]: Analyzing trace with hash -230662155, now seen corresponding path program 1 times [2020-08-18 19:39:02,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:02,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571933696] [2020-08-18 19:39:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:06,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:39:06,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571933696] [2020-08-18 19:39:06,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:39:06,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 19:39:06,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37410546] [2020-08-18 19:39:06,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:39:06,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:06,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:39:06,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-08-18 19:39:06,742 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-08-18 19:39:08,878 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 26 [2020-08-18 19:39:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:18,421 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-08-18 19:39:18,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:39:18,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-18 19:39:18,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:18,422 INFO L225 Difference]: With dead ends: 43 [2020-08-18 19:39:18,423 INFO L226 Difference]: Without dead ends: 32 [2020-08-18 19:39:18,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2020-08-18 19:39:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-18 19:39:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-08-18 19:39:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-18 19:39:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-18 19:39:18,435 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2020-08-18 19:39:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:18,438 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-18 19:39:18,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:39:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-18 19:39:18,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 19:39:18,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:39:18,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:39:18,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:39:18,439 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:39:18,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:39:18,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-08-18 19:39:18,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:39:18,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106752331] [2020-08-18 19:39:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:39:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:39:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 19:39:18,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106752331] [2020-08-18 19:39:18,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:39:18,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:39:18,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009655644] [2020-08-18 19:39:18,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:39:18,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:39:18,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:39:18,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:39:18,621 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-08-18 19:39:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:39:18,733 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-18 19:39:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:39:18,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-18 19:39:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:39:18,734 INFO L225 Difference]: With dead ends: 31 [2020-08-18 19:39:18,734 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 19:39:18,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:39:18,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 19:39:18,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 19:39:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 19:39:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 19:39:18,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-08-18 19:39:18,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:39:18,737 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 19:39:18,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:39:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 19:39:18,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 19:39:18,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 19:39:18,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 19:39:18,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 19:39:18,890 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-18 19:39:18,890 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 19:39:18,890 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 19:39:18,890 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-18 19:39:18,890 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 19:39:18,891 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 19:39:18,891 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-18 19:39:18,891 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-18 19:39:18,891 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-18 19:39:18,891 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-18 19:39:18,891 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-18 19:39:18,892 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-08-18 19:39:18,894 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-08-18 19:39:18,894 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-08-18 19:39:18,894 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-08-18 19:39:18,894 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-08-18 19:39:18,894 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-08-18 19:39:18,895 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-18 19:39:18,896 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 (* 4294967296 (div main_~l~0 4294967296)))) (.cse0 (* 4294967296 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0) 4294967296)))) (and (<= (+ main_~l~0 .cse0) .cse1) (< .cse1 (+ main_~l~0 .cse0 1)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-18 19:39:18,896 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-08-18 19:39:18,896 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-08-18 19:39:18,896 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-18 19:39:18,896 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-18 19:39:18,896 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-18 19:39:18,897 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-18 19:39:18,897 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-18 19:39:18,897 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-18 19:39:18,897 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-18 19:39:18,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:39:18 BoogieIcfgContainer [2020-08-18 19:39:18,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:39:18,931 INFO L168 Benchmark]: Toolchain (without parser) took 31530.16 ms. Allocated memory was 138.4 MB in the beginning and 277.9 MB in the end (delta: 139.5 MB). Free memory was 101.6 MB in the beginning and 94.3 MB in the end (delta: 7.3 MB). Peak memory consumption was 146.8 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:18,932 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 19:39:18,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.01 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 91.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:18,934 INFO L168 Benchmark]: Boogie Preprocessor took 105.17 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.5 MB in the beginning and 179.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:18,934 INFO L168 Benchmark]: RCFGBuilder took 299.37 ms. Allocated memory is still 200.3 MB. Free memory was 179.3 MB in the beginning and 164.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:18,942 INFO L168 Benchmark]: TraceAbstraction took 30849.28 ms. Allocated memory was 200.3 MB in the beginning and 277.9 MB in the end (delta: 77.6 MB). Free memory was 163.5 MB in the beginning and 94.3 MB in the end (delta: 69.2 MB). Peak memory consumption was 146.8 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:18,950 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.01 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 91.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.17 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.5 MB in the beginning and 179.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.37 ms. Allocated memory is still 200.3 MB. Free memory was 179.3 MB in the beginning and 164.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30849.28 ms. Allocated memory was 200.3 MB in the beginning and 277.9 MB in the end (delta: 77.6 MB). Free memory was 163.5 MB in the beginning and 94.3 MB in the end (delta: 69.2 MB). Peak memory consumption was 146.8 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: 19]: Loop Invariant Derived loop invariant: ((l <= i + j + k + v3 + v4 && i + j + k + v3 + v4 <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30.5s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 22.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 517 SDslu, 239 SDs, 0 SdLazy, 749 SolverSat, 125 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 18.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 32 SyntacticMatches, 12 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=11, 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, 12 MinimizatonAttempts, 24 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 27 NumberOfFragments, 98 HoareAnnotationTreeSize, 19 FomulaSimplifications, 530 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 248 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 52122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 42/80 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...