/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:36:12,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:36:12,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:36:12,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:36:12,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:36:12,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:36:12,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:36:12,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:36:12,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:36:12,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:36:12,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:36:12,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:36:12,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:36:12,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:36:12,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:36:12,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:36:12,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:36:12,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:36:12,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:36:12,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:36:12,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:36:12,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:36:12,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:36:12,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:36:12,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 15:36:12,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:36:12,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:36:12,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:36:12,097 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 15:36:12,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:36:12,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:36:12,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:36:12,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:36:12,143 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:36:12,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:36:12,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:36:12,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:36:12,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:36:12,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:36:12,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:36:12,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:36:12,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:36:12,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:36:12,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:36:12,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:36:12,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:36:12,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:36:12,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:36:12,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:36:12,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:36:12,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:36:12,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:36:12,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:36:12,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:36:12,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:36:12,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:36:12,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:36:12,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:36:12,149 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 -> false [2020-08-18 15:36:12,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:36:12,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:36:12,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:36:12,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:36:12,515 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:36:12,516 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-18 15:36:12,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f308ce745/64763dfc7e38499f977daf7d7c14a27c/FLAG5d2e380a2 [2020-08-18 15:36:13,056 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:36:13,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-18 15:36:13,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f308ce745/64763dfc7e38499f977daf7d7c14a27c/FLAG5d2e380a2 [2020-08-18 15:36:13,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f308ce745/64763dfc7e38499f977daf7d7c14a27c [2020-08-18 15:36:13,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:36:13,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:36:13,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:36:13,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:36:13,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:36:13,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:36:13" (1/1) ... [2020-08-18 15:36:13,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13, skipping insertion in model container [2020-08-18 15:36:13,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:36:13" (1/1) ... [2020-08-18 15:36:13,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:36:13,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:36:13,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:36:13,694 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:36:13,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:36:13,793 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:36:13,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13 WrapperNode [2020-08-18 15:36:13,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:36:13,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:36:13,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:36:13,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:36:13,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13" (1/1) ... [2020-08-18 15:36:13,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13" (1/1) ... [2020-08-18 15:36:13,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13" (1/1) ... [2020-08-18 15:36:13,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13" (1/1) ... [2020-08-18 15:36:13,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13" (1/1) ... [2020-08-18 15:36:13,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13" (1/1) ... [2020-08-18 15:36:13,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13" (1/1) ... [2020-08-18 15:36:13,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:36:13,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:36:13,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:36:13,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:36:13,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13" (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 15:36:13,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:36:13,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:36:13,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 15:36:13,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:36:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:36:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 15:36:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 15:36:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 15:36:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:36:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:36:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:36:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:36:14,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:36:14,424 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 15:36:14,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:36:14 BoogieIcfgContainer [2020-08-18 15:36:14,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:36:14,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:36:14,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:36:14,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:36:14,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:36:13" (1/3) ... [2020-08-18 15:36:14,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10be6ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:36:14, skipping insertion in model container [2020-08-18 15:36:14,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:13" (2/3) ... [2020-08-18 15:36:14,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10be6ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:36:14, skipping insertion in model container [2020-08-18 15:36:14,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:36:14" (3/3) ... [2020-08-18 15:36:14,438 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-08-18 15:36:14,449 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:36:14,456 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-08-18 15:36:14,470 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-08-18 15:36:14,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:36:14,497 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:36:14,498 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:36:14,498 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:36:14,498 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:36:14,498 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:36:14,499 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:36:14,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:36:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-08-18 15:36:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 15:36:14,528 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:14,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:14,530 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-08-18 15:36:14,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:14,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154206013] [2020-08-18 15:36:14,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:14,823 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 15:36:14,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154206013] [2020-08-18 15:36:14,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:14,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:14,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239711863] [2020-08-18 15:36:14,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:14,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:14,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:14,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:14,850 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-08-18 15:36:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:15,258 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-08-18 15:36:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:36:15,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-18 15:36:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:15,272 INFO L225 Difference]: With dead ends: 137 [2020-08-18 15:36:15,272 INFO L226 Difference]: Without dead ends: 113 [2020-08-18 15:36:15,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:36:15,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-18 15:36:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-08-18 15:36:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 15:36:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-08-18 15:36:15,324 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-08-18 15:36:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:15,324 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-08-18 15:36:15,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-08-18 15:36:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 15:36:15,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:15,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:15,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:36:15,326 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:15,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:15,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-08-18 15:36:15,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:15,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044773433] [2020-08-18 15:36:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:15,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:15,407 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 15:36:15,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044773433] [2020-08-18 15:36:15,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:15,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:36:15,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623888738] [2020-08-18 15:36:15,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:36:15,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:15,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:36:15,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:36:15,411 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-08-18 15:36:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:15,558 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-18 15:36:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 15:36:15,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-18 15:36:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:15,560 INFO L225 Difference]: With dead ends: 69 [2020-08-18 15:36:15,561 INFO L226 Difference]: Without dead ends: 67 [2020-08-18 15:36:15,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 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 15:36:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-18 15:36:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-08-18 15:36:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-18 15:36:15,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-08-18 15:36:15,571 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-08-18 15:36:15,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:15,572 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-08-18 15:36:15,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:36:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-08-18 15:36:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 15:36:15,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:15,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:15,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:36:15,573 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:15,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:15,574 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-08-18 15:36:15,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:15,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755557112] [2020-08-18 15:36:15,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:15,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:15,687 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 15:36:15,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755557112] [2020-08-18 15:36:15,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:15,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:36:15,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099932002] [2020-08-18 15:36:15,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:36:15,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:15,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:36:15,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:36:15,690 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-08-18 15:36:15,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:15,844 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-08-18 15:36:15,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:36:15,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-18 15:36:15,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:15,846 INFO L225 Difference]: With dead ends: 73 [2020-08-18 15:36:15,846 INFO L226 Difference]: Without dead ends: 71 [2020-08-18 15:36:15,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 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 15:36:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-18 15:36:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-08-18 15:36:15,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-18 15:36:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-18 15:36:15,856 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-08-18 15:36:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:15,857 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-18 15:36:15,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:36:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-18 15:36:15,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 15:36:15,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:15,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:15,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:36:15,862 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:15,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:15,862 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-08-18 15:36:15,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:15,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861820606] [2020-08-18 15:36:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:15,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:15,982 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 15:36:15,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861820606] [2020-08-18 15:36:15,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:15,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:15,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531354467] [2020-08-18 15:36:15,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:15,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:15,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:15,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:15,986 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-08-18 15:36:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:16,186 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-08-18 15:36:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:36:16,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-18 15:36:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:16,188 INFO L225 Difference]: With dead ends: 71 [2020-08-18 15:36:16,189 INFO L226 Difference]: Without dead ends: 69 [2020-08-18 15:36:16,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:36:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-18 15:36:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-08-18 15:36:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 15:36:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-08-18 15:36:16,198 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-08-18 15:36:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:16,198 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-08-18 15:36:16,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-08-18 15:36:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 15:36:16,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:16,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:16,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:36:16,200 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:16,201 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-08-18 15:36:16,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:16,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035319290] [2020-08-18 15:36:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:16,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:16,261 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 15:36:16,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035319290] [2020-08-18 15:36:16,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:16,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:16,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327127103] [2020-08-18 15:36:16,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:16,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:16,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:16,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:16,264 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-08-18 15:36:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:16,413 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-18 15:36:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:36:16,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-18 15:36:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:16,415 INFO L225 Difference]: With dead ends: 69 [2020-08-18 15:36:16,415 INFO L226 Difference]: Without dead ends: 67 [2020-08-18 15:36:16,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:36:16,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-18 15:36:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-08-18 15:36:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-18 15:36:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-08-18 15:36:16,422 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-08-18 15:36:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:16,423 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-08-18 15:36:16,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-08-18 15:36:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 15:36:16,424 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:16,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:16,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:36:16,424 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:16,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:16,425 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-08-18 15:36:16,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:16,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188924912] [2020-08-18 15:36:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:16,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:16,481 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 15:36:16,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188924912] [2020-08-18 15:36:16,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:16,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:16,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106283231] [2020-08-18 15:36:16,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:16,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:16,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:16,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:16,484 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-08-18 15:36:16,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:16,709 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-08-18 15:36:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:36:16,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-18 15:36:16,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:16,711 INFO L225 Difference]: With dead ends: 112 [2020-08-18 15:36:16,713 INFO L226 Difference]: Without dead ends: 110 [2020-08-18 15:36:16,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:36:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-18 15:36:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-08-18 15:36:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-18 15:36:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-08-18 15:36:16,728 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-08-18 15:36:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:16,731 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-08-18 15:36:16,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-08-18 15:36:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 15:36:16,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:16,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:16,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:36:16,733 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:16,733 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-08-18 15:36:16,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:16,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361364386] [2020-08-18 15:36:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:16,807 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 15:36:16,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361364386] [2020-08-18 15:36:16,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:16,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:36:16,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090550457] [2020-08-18 15:36:16,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:36:16,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:16,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:36:16,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:36:16,809 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-08-18 15:36:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:16,963 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-08-18 15:36:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 15:36:16,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 15:36:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:16,964 INFO L225 Difference]: With dead ends: 65 [2020-08-18 15:36:16,964 INFO L226 Difference]: Without dead ends: 61 [2020-08-18 15:36:16,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 15:36:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-18 15:36:16,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-18 15:36:16,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-18 15:36:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-08-18 15:36:16,973 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-08-18 15:36:16,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:16,973 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-08-18 15:36:16,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:36:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-08-18 15:36:16,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 15:36:16,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:16,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:16,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:36:16,975 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:16,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:16,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-08-18 15:36:16,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:16,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292128765] [2020-08-18 15:36:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:17,018 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 15:36:17,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292128765] [2020-08-18 15:36:17,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:17,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:36:17,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597742097] [2020-08-18 15:36:17,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:36:17,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:17,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:36:17,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:36:17,021 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2020-08-18 15:36:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:17,143 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-18 15:36:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 15:36:17,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 15:36:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:17,144 INFO L225 Difference]: With dead ends: 61 [2020-08-18 15:36:17,145 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 15:36:17,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 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 15:36:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 15:36:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-18 15:36:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-18 15:36:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-08-18 15:36:17,151 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-08-18 15:36:17,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:17,151 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-08-18 15:36:17,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:36:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-08-18 15:36:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 15:36:17,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:17,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:17,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:36:17,153 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:17,154 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-08-18 15:36:17,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:17,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758775139] [2020-08-18 15:36:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:17,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:17,270 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 15:36:17,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758775139] [2020-08-18 15:36:17,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:17,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 15:36:17,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631620346] [2020-08-18 15:36:17,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:36:17,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:17,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:36:17,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:36:17,273 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-08-18 15:36:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:17,506 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-08-18 15:36:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:36:17,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-08-18 15:36:17,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:17,508 INFO L225 Difference]: With dead ends: 95 [2020-08-18 15:36:17,508 INFO L226 Difference]: Without dead ends: 93 [2020-08-18 15:36:17,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:36:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-18 15:36:17,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2020-08-18 15:36:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-18 15:36:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-08-18 15:36:17,514 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2020-08-18 15:36:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:17,515 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-08-18 15:36:17,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:36:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-08-18 15:36:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 15:36:17,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:17,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:17,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:36:17,517 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:17,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:17,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-08-18 15:36:17,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:17,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336456388] [2020-08-18 15:36:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:17,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:17,603 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 15:36:17,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336456388] [2020-08-18 15:36:17,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:17,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:17,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383955398] [2020-08-18 15:36:17,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:17,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:17,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:17,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:17,606 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-08-18 15:36:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:17,769 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-08-18 15:36:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:36:17,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 15:36:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:17,771 INFO L225 Difference]: With dead ends: 72 [2020-08-18 15:36:17,772 INFO L226 Difference]: Without dead ends: 70 [2020-08-18 15:36:17,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:36:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-18 15:36:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-08-18 15:36:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-18 15:36:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-08-18 15:36:17,777 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2020-08-18 15:36:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:17,777 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-08-18 15:36:17,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-08-18 15:36:17,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 15:36:17,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:17,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:17,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:36:17,779 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:17,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-08-18 15:36:17,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:17,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235689820] [2020-08-18 15:36:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:17,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:17,821 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 15:36:17,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235689820] [2020-08-18 15:36:17,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:17,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:17,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110833907] [2020-08-18 15:36:17,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:17,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:17,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:17,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:17,823 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-08-18 15:36:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:17,980 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-08-18 15:36:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:36:17,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 15:36:17,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:17,981 INFO L225 Difference]: With dead ends: 53 [2020-08-18 15:36:17,983 INFO L226 Difference]: Without dead ends: 51 [2020-08-18 15:36:17,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:36:17,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-18 15:36:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-08-18 15:36:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-18 15:36:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-18 15:36:17,993 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2020-08-18 15:36:17,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:17,994 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-18 15:36:17,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:17,997 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-18 15:36:17,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 15:36:17,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:17,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:17,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:36:17,999 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:17,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:17,999 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-08-18 15:36:17,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:17,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039201512] [2020-08-18 15:36:18,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,115 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 15:36:18,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039201512] [2020-08-18 15:36:18,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:18,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 15:36:18,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516216384] [2020-08-18 15:36:18,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:36:18,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:18,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:36:18,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:36:18,117 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-08-18 15:36:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:18,263 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-08-18 15:36:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:36:18,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-18 15:36:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:18,265 INFO L225 Difference]: With dead ends: 50 [2020-08-18 15:36:18,265 INFO L226 Difference]: Without dead ends: 48 [2020-08-18 15:36:18,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:36:18,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-18 15:36:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-08-18 15:36:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-18 15:36:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-08-18 15:36:18,270 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-08-18 15:36:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:18,270 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-08-18 15:36:18,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:36:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-08-18 15:36:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 15:36:18,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:18,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:18,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 15:36:18,271 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:18,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:18,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-08-18 15:36:18,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:18,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026266919] [2020-08-18 15:36:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,311 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 15:36:18,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026266919] [2020-08-18 15:36:18,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:18,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:18,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316929815] [2020-08-18 15:36:18,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:18,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:18,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:18,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:18,313 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-08-18 15:36:18,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:18,457 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-08-18 15:36:18,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:36:18,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 15:36:18,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:18,458 INFO L225 Difference]: With dead ends: 69 [2020-08-18 15:36:18,458 INFO L226 Difference]: Without dead ends: 67 [2020-08-18 15:36:18,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:36:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-18 15:36:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-08-18 15:36:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 15:36:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-08-18 15:36:18,462 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-08-18 15:36:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:18,463 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-08-18 15:36:18,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-08-18 15:36:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 15:36:18,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:18,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:18,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 15:36:18,464 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:18,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-08-18 15:36:18,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:18,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522585175] [2020-08-18 15:36:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,546 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 15:36:18,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522585175] [2020-08-18 15:36:18,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:18,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:18,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252498826] [2020-08-18 15:36:18,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:18,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:18,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:18,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:18,550 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-08-18 15:36:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:18,695 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-08-18 15:36:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:36:18,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 15:36:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:18,696 INFO L225 Difference]: With dead ends: 57 [2020-08-18 15:36:18,696 INFO L226 Difference]: Without dead ends: 55 [2020-08-18 15:36:18,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:36:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-18 15:36:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-08-18 15:36:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-18 15:36:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-18 15:36:18,703 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2020-08-18 15:36:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:18,703 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-18 15:36:18,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-18 15:36:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 15:36:18,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:18,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:18,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 15:36:18,705 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-08-18 15:36:18,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:18,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943470182] [2020-08-18 15:36:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,794 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 15:36:18,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943470182] [2020-08-18 15:36:18,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:18,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:18,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80552977] [2020-08-18 15:36:18,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:18,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:18,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:18,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:18,798 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-08-18 15:36:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:18,907 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-18 15:36:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:36:18,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 15:36:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:18,911 INFO L225 Difference]: With dead ends: 41 [2020-08-18 15:36:18,911 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 15:36:18,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:36:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 15:36:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-18 15:36:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-18 15:36:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-18 15:36:18,918 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-08-18 15:36:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:18,918 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-18 15:36:18,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:18,918 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-18 15:36:18,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 15:36:18,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:18,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:18,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 15:36:18,921 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:18,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:18,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-08-18 15:36:18,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:18,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734966217] [2020-08-18 15:36:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:18,989 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 15:36:18,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734966217] [2020-08-18 15:36:18,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:18,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:18,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314780245] [2020-08-18 15:36:18,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:18,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:18,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:18,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:18,991 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-08-18 15:36:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:19,144 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-08-18 15:36:19,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:36:19,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-18 15:36:19,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:19,145 INFO L225 Difference]: With dead ends: 52 [2020-08-18 15:36:19,146 INFO L226 Difference]: Without dead ends: 50 [2020-08-18 15:36:19,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:36:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-18 15:36:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-08-18 15:36:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 15:36:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-18 15:36:19,150 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-08-18 15:36:19,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:19,150 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-18 15:36:19,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:19,151 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-18 15:36:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 15:36:19,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:19,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:19,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 15:36:19,152 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:19,152 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-08-18 15:36:19,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:19,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83921181] [2020-08-18 15:36:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:19,191 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 15:36:19,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83921181] [2020-08-18 15:36:19,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:19,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:36:19,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766370007] [2020-08-18 15:36:19,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:36:19,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:19,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:36:19,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:36:19,193 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-18 15:36:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:19,265 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-18 15:36:19,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 15:36:19,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-18 15:36:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:19,266 INFO L225 Difference]: With dead ends: 35 [2020-08-18 15:36:19,267 INFO L226 Difference]: Without dead ends: 33 [2020-08-18 15:36:19,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 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 15:36:19,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-18 15:36:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-18 15:36:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-18 15:36:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-18 15:36:19,270 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-08-18 15:36:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:19,271 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-18 15:36:19,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:36:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-18 15:36:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 15:36:19,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:19,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:19,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 15:36:19,272 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:19,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:19,273 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-08-18 15:36:19,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:19,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705351898] [2020-08-18 15:36:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:19,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:19,306 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 15:36:19,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705351898] [2020-08-18 15:36:19,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:19,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:36:19,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272312674] [2020-08-18 15:36:19,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:36:19,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:19,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:36:19,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:36:19,309 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-18 15:36:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:19,389 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-18 15:36:19,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 15:36:19,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-18 15:36:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:19,390 INFO L225 Difference]: With dead ends: 37 [2020-08-18 15:36:19,390 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 15:36:19,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 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 15:36:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 15:36:19,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 15:36:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 15:36:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 15:36:19,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-18 15:36:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:19,392 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 15:36:19,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:36:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 15:36:19,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 15:36:19,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 15:36:19,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 15:36:19,653 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:36:19,654 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_383_0~0 |old(~__tmp_383_0~0)|) (= ~__tmp_247_0~0 |old(~__tmp_247_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_305~0 |old(~__return_305~0)|)) [2020-08-18 15:36:19,654 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:36:19,655 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:36:19,655 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 15:36:19,655 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 15:36:19,655 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:36:19,655 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-18 15:36:19,655 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-18 15:36:19,655 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-18 15:36:19,656 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-18 15:36:19,656 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-08-18 15:36:19,656 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-08-18 15:36:19,656 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-08-18 15:36:19,656 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-08-18 15:36:19,656 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-08-18 15:36:19,656 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-08-18 15:36:19,656 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-08-18 15:36:19,657 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-08-18 15:36:19,658 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-08-18 15:36:19,658 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-08-18 15:36:19,659 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-08-18 15:36:19,659 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-08-18 15:36:19,659 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-08-18 15:36:19,659 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-08-18 15:36:19,660 INFO L264 CegarLoopResult]: At program point L326(lines 30 366) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-08-18 15:36:19,660 INFO L264 CegarLoopResult]: At program point L194(lines 58 252) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-18 15:36:19,660 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-08-18 15:36:19,660 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-08-18 15:36:19,661 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-08-18 15:36:19,661 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-08-18 15:36:19,661 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-08-18 15:36:19,661 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-08-18 15:36:19,661 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-08-18 15:36:19,661 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-08-18 15:36:19,661 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-18 15:36:19,662 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-08-18 15:36:19,662 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-18 15:36:19,662 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-08-18 15:36:19,662 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 373) the Hoare annotation is: (and (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2020-08-18 15:36:19,662 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-08-18 15:36:19,662 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-08-18 15:36:19,663 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-08-18 15:36:19,664 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-08-18 15:36:19,665 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-08-18 15:36:19,665 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-08-18 15:36:19,665 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-08-18 15:36:19,665 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-08-18 15:36:19,665 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-08-18 15:36:19,665 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-08-18 15:36:19,666 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-08-18 15:36:19,666 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-08-18 15:36:19,666 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-08-18 15:36:19,666 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-08-18 15:36:19,666 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-18 15:36:19,666 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-08-18 15:36:19,666 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-08-18 15:36:19,667 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-08-18 15:36:19,667 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-08-18 15:36:19,667 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-08-18 15:36:19,667 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-08-18 15:36:19,667 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-08-18 15:36:19,668 INFO L264 CegarLoopResult]: At program point L355(lines 281 362) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~13 0)) (<= 0 main_~main__t~0)) [2020-08-18 15:36:19,668 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-08-18 15:36:19,668 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-08-18 15:36:19,668 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-08-18 15:36:19,669 INFO L264 CegarLoopResult]: At program point L248(lines 100 250) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-18 15:36:19,669 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-18 15:36:19,669 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-08-18 15:36:19,669 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-08-18 15:36:19,670 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-08-18 15:36:19,670 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-08-18 15:36:19,670 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-08-18 15:36:19,670 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-08-18 15:36:19,671 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-08-18 15:36:19,671 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-08-18 15:36:19,671 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-08-18 15:36:19,671 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-08-18 15:36:19,671 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-08-18 15:36:19,671 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-08-18 15:36:19,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:36:19 BoogieIcfgContainer [2020-08-18 15:36:19,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:36:19,701 INFO L168 Benchmark]: Toolchain (without parser) took 6274.22 ms. Allocated memory was 143.7 MB in the beginning and 273.2 MB in the end (delta: 129.5 MB). Free memory was 107.1 MB in the beginning and 118.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 117.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:19,702 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:36:19,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.91 ms. Allocated memory is still 143.7 MB. Free memory was 106.8 MB in the beginning and 94.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:19,709 INFO L168 Benchmark]: Boogie Preprocessor took 125.15 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 94.1 MB in the beginning and 182.6 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:19,714 INFO L168 Benchmark]: RCFGBuilder took 510.08 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 157.2 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:19,714 INFO L168 Benchmark]: TraceAbstraction took 5265.42 ms. Allocated memory was 205.0 MB in the beginning and 273.2 MB in the end (delta: 68.2 MB). Free memory was 157.2 MB in the beginning and 118.8 MB in the end (delta: 38.4 MB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. [2020-08-18 15:36:19,720 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 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.91 ms. Allocated memory is still 143.7 MB. Free memory was 106.8 MB in the beginning and 94.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.15 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 94.1 MB in the beginning and 182.6 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 510.08 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 157.2 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5265.42 ms. Allocated memory was 205.0 MB in the beginning and 273.2 MB in the end (delta: 68.2 MB). Free memory was 157.2 MB in the beginning and 118.8 MB in the end (delta: 38.4 MB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 337]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 349]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 153]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 296]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 223]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 308]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 277]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 113]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 235]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 141]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 125]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 54]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && main__t < main__tagbuf_len + 1) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 281]: Loop Invariant Derived loop invariant: (main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 0 <= main__t - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 80 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 802 SDtfs, 1459 SDslu, 821 SDs, 0 SdLazy, 2124 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, 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, 18 MinimizatonAttempts, 209 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 76 HoareAnnotationTreeSize, 9 FomulaSimplifications, 50568 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1351 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 13380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 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...