/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:10:23,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:10:23,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:10:23,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:10:23,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:10:23,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:10:23,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:10:23,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:10:23,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:10:23,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:10:23,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:10:23,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:10:23,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:10:23,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:10:23,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:10:23,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:10:23,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:10:23,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:10:23,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:10:23,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:10:23,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:10:23,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:10:23,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:10:23,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:10:23,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 23:10:23,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:10:23,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:10:23,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:10:23,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:10:23,914 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:10:23,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:10:23,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:10:23,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:10:23,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:10:23,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:10:23,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:10:23,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:10:23,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:10:23,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:10:23,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:10:23,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:10:23,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:10:23,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:10:23,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:10:23,919 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:10:23,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:10:23,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:10:23,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:10:23,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:10:23,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:10:23,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:10:23,921 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 23:10:24,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:10:24,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:10:24,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:10:24,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:10:24,411 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:10:24,412 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-09-04 23:10:24,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bdcefd35/cd69213fbae345039f55ff742e61d428/FLAG4ab66d2c8 [2020-09-04 23:10:24,982 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:10:24,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/lu.cmp.c [2020-09-04 23:10:24,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bdcefd35/cd69213fbae345039f55ff742e61d428/FLAG4ab66d2c8 [2020-09-04 23:10:25,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bdcefd35/cd69213fbae345039f55ff742e61d428 [2020-09-04 23:10:25,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:10:25,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:10:25,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:25,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:10:25,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:10:25,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:25" (1/1) ... [2020-09-04 23:10:25,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b8db4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25, skipping insertion in model container [2020-09-04 23:10:25,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:25" (1/1) ... [2020-09-04 23:10:25,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:10:25,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:10:25,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:25,726 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:10:25,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:25,892 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:10:25,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25 WrapperNode [2020-09-04 23:10:25,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:25,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:10:25,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:10:25,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:10:25,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25" (1/1) ... [2020-09-04 23:10:25,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25" (1/1) ... [2020-09-04 23:10:25,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25" (1/1) ... [2020-09-04 23:10:25,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25" (1/1) ... [2020-09-04 23:10:25,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25" (1/1) ... [2020-09-04 23:10:25,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25" (1/1) ... [2020-09-04 23:10:25,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25" (1/1) ... [2020-09-04 23:10:25,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:10:25,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:10:25,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:10:25,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:10:25,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25" (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 [2020-09-04 23:10:26,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:10:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:10:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:10:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-09-04 23:10:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:10:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-09-04 23:10:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:10:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:10:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-09-04 23:10:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-09-04 23:10:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:10:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 23:10:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 23:10:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:10:26,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:10:26,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:10:26,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:10:26,625 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:10:26,626 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-04 23:10:26,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:26 BoogieIcfgContainer [2020-09-04 23:10:26,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:10:26,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:10:26,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:10:26,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:10:26,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:10:25" (1/3) ... [2020-09-04 23:10:26,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e37724c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:26, skipping insertion in model container [2020-09-04 23:10:26,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:25" (2/3) ... [2020-09-04 23:10:26,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e37724c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:26, skipping insertion in model container [2020-09-04 23:10:26,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:26" (3/3) ... [2020-09-04 23:10:26,643 INFO L109 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-09-04 23:10:26,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:10:26,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:10:26,687 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:10:26,710 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:10:26,710 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:10:26,710 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:10:26,711 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:10:26,711 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:10:26,711 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:10:26,711 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:10:26,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:10:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-09-04 23:10:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 23:10:26,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:26,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:26,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:26,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1445504148, now seen corresponding path program 1 times [2020-09-04 23:10:26,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:26,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418156684] [2020-09-04 23:10:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:27,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418156684] [2020-09-04 23:10:27,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:27,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:10:27,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34762552] [2020-09-04 23:10:27,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:10:27,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:27,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:10:27,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:10:27,128 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 5 states. [2020-09-04 23:10:27,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:27,740 INFO L93 Difference]: Finished difference Result 367 states and 432 transitions. [2020-09-04 23:10:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 23:10:27,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-04 23:10:27,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:27,753 INFO L225 Difference]: With dead ends: 367 [2020-09-04 23:10:27,754 INFO L226 Difference]: Without dead ends: 64 [2020-09-04 23:10:27,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:10:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-04 23:10:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-09-04 23:10:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-04 23:10:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-09-04 23:10:27,818 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 30 [2020-09-04 23:10:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:27,819 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-09-04 23:10:27,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:10:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-09-04 23:10:27,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-04 23:10:27,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:27,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:27,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:10:27,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:27,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:27,826 INFO L82 PathProgramCache]: Analyzing trace with hash -905808642, now seen corresponding path program 1 times [2020-09-04 23:10:27,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:27,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912306863] [2020-09-04 23:10:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:28,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:28,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912306863] [2020-09-04 23:10:28,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:28,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:10:28,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970291432] [2020-09-04 23:10:28,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:10:28,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:28,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:10:28,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:10:28,026 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 5 states. [2020-09-04 23:10:28,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:28,219 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2020-09-04 23:10:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 23:10:28,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-04 23:10:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:28,224 INFO L225 Difference]: With dead ends: 103 [2020-09-04 23:10:28,224 INFO L226 Difference]: Without dead ends: 76 [2020-09-04 23:10:28,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:10:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-04 23:10:28,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 55. [2020-09-04 23:10:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 23:10:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-04 23:10:28,247 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 39 [2020-09-04 23:10:28,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:28,248 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-04 23:10:28,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:10:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-04 23:10:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 23:10:28,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:28,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:28,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:10:28,251 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:28,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:28,251 INFO L82 PathProgramCache]: Analyzing trace with hash -361483259, now seen corresponding path program 1 times [2020-09-04 23:10:28,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:28,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153144349] [2020-09-04 23:10:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:28,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 23:10:28,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153144349] [2020-09-04 23:10:28,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:28,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 23:10:28,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596730954] [2020-09-04 23:10:28,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 23:10:28,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:28,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 23:10:28,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:10:28,434 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 6 states. [2020-09-04 23:10:28,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:28,749 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2020-09-04 23:10:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 23:10:28,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-04 23:10:28,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:28,751 INFO L225 Difference]: With dead ends: 77 [2020-09-04 23:10:28,752 INFO L226 Difference]: Without dead ends: 75 [2020-09-04 23:10:28,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-04 23:10:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-04 23:10:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-09-04 23:10:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-04 23:10:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-09-04 23:10:28,770 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 42 [2020-09-04 23:10:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:28,770 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-09-04 23:10:28,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 23:10:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-09-04 23:10:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-04 23:10:28,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:28,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:28,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:10:28,775 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:28,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1960696442, now seen corresponding path program 1 times [2020-09-04 23:10:28,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:28,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786951678] [2020-09-04 23:10:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:28,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-04 23:10:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 23:10:28,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786951678] [2020-09-04 23:10:28,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:10:28,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 23:10:28,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297230913] [2020-09-04 23:10:28,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 23:10:28,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:28,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 23:10:28,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:10:28,967 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 7 states. [2020-09-04 23:10:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:29,206 INFO L93 Difference]: Finished difference Result 146 states and 157 transitions. [2020-09-04 23:10:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 23:10:29,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-09-04 23:10:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:29,210 INFO L225 Difference]: With dead ends: 146 [2020-09-04 23:10:29,211 INFO L226 Difference]: Without dead ends: 114 [2020-09-04 23:10:29,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-04 23:10:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-04 23:10:29,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2020-09-04 23:10:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 23:10:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-09-04 23:10:29,230 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 64 [2020-09-04 23:10:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:29,230 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-09-04 23:10:29,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 23:10:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-09-04 23:10:29,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-04 23:10:29,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:29,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:29,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 23:10:29,233 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:29,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1491522468, now seen corresponding path program 2 times [2020-09-04 23:10:29,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:29,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98083780] [2020-09-04 23:10:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:29,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-04 23:10:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 46 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 23:10:29,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98083780] [2020-09-04 23:10:29,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:10:29,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-04 23:10:29,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268655955] [2020-09-04 23:10:29,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 23:10:29,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:29,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 23:10:29,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 23:10:29,376 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 9 states. [2020-09-04 23:10:29,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:29,704 INFO L93 Difference]: Finished difference Result 182 states and 196 transitions. [2020-09-04 23:10:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 23:10:29,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-04 23:10:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:29,706 INFO L225 Difference]: With dead ends: 182 [2020-09-04 23:10:29,706 INFO L226 Difference]: Without dead ends: 138 [2020-09-04 23:10:29,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-09-04 23:10:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-04 23:10:29,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 118. [2020-09-04 23:10:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-04 23:10:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2020-09-04 23:10:29,728 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 82 [2020-09-04 23:10:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:29,728 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2020-09-04 23:10:29,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 23:10:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2020-09-04 23:10:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-04 23:10:29,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:29,730 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:29,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 23:10:29,731 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2108507974, now seen corresponding path program 3 times [2020-09-04 23:10:29,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:29,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908346340] [2020-09-04 23:10:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:29,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:29,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-04 23:10:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 93 proven. 30 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-04 23:10:29,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908346340] [2020-09-04 23:10:29,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:10:29,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 23:10:29,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409925419] [2020-09-04 23:10:29,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 23:10:29,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:29,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 23:10:29,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:10:29,916 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 11 states. [2020-09-04 23:10:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:30,357 INFO L93 Difference]: Finished difference Result 218 states and 235 transitions. [2020-09-04 23:10:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 23:10:30,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-09-04 23:10:30,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:30,360 INFO L225 Difference]: With dead ends: 218 [2020-09-04 23:10:30,360 INFO L226 Difference]: Without dead ends: 162 [2020-09-04 23:10:30,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-09-04 23:10:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-04 23:10:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2020-09-04 23:10:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-04 23:10:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2020-09-04 23:10:30,382 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 100 [2020-09-04 23:10:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:30,383 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2020-09-04 23:10:30,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 23:10:30,383 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2020-09-04 23:10:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-04 23:10:30,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:30,385 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:30,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 23:10:30,386 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1471539684, now seen corresponding path program 4 times [2020-09-04 23:10:30,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:30,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524320449] [2020-09-04 23:10:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:30,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-04 23:10:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 2 proven. 157 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-09-04 23:10:30,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524320449] [2020-09-04 23:10:30,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:10:30,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 23:10:30,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666824210] [2020-09-04 23:10:30,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 23:10:30,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:30,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 23:10:30,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 23:10:30,541 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand 8 states. [2020-09-04 23:10:30,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:30,961 INFO L93 Difference]: Finished difference Result 208 states and 222 transitions. [2020-09-04 23:10:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 23:10:30,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-09-04 23:10:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:30,965 INFO L225 Difference]: With dead ends: 208 [2020-09-04 23:10:30,965 INFO L226 Difference]: Without dead ends: 206 [2020-09-04 23:10:30,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-04 23:10:30,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-04 23:10:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2020-09-04 23:10:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-04 23:10:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 217 transitions. [2020-09-04 23:10:30,997 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 217 transitions. Word has length 118 [2020-09-04 23:10:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:30,998 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 217 transitions. [2020-09-04 23:10:30,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 23:10:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 217 transitions. [2020-09-04 23:10:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 23:10:31,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:31,000 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 11, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:31,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 23:10:31,001 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:31,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:31,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2112155237, now seen corresponding path program 5 times [2020-09-04 23:10:31,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:31,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819931415] [2020-09-04 23:10:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:31,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:31,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-04 23:10:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-04 23:10:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 316 proven. 58 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-09-04 23:10:31,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819931415] [2020-09-04 23:10:31,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:10:31,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-04 23:10:31,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773483476] [2020-09-04 23:10:31,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 23:10:31,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:31,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 23:10:31,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-04 23:10:31,241 INFO L87 Difference]: Start difference. First operand 203 states and 217 transitions. Second operand 13 states. [2020-09-04 23:10:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:31,749 INFO L93 Difference]: Finished difference Result 398 states and 431 transitions. [2020-09-04 23:10:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 23:10:31,749 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 167 [2020-09-04 23:10:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:31,752 INFO L225 Difference]: With dead ends: 398 [2020-09-04 23:10:31,752 INFO L226 Difference]: Without dead ends: 269 [2020-09-04 23:10:31,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=492, Unknown=0, NotChecked=0, Total=702 [2020-09-04 23:10:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-04 23:10:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 239. [2020-09-04 23:10:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-04 23:10:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 256 transitions. [2020-09-04 23:10:31,794 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 256 transitions. Word has length 167 [2020-09-04 23:10:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:31,794 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 256 transitions. [2020-09-04 23:10:31,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 23:10:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 256 transitions. [2020-09-04 23:10:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-04 23:10:31,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:31,797 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:31,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 23:10:31,797 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:31,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:31,798 INFO L82 PathProgramCache]: Analyzing trace with hash 917121735, now seen corresponding path program 6 times [2020-09-04 23:10:31,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:31,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267776609] [2020-09-04 23:10:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 23:10:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 23:10:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 482 proven. 95 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2020-09-04 23:10:32,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267776609] [2020-09-04 23:10:32,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:10:32,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-04 23:10:32,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927228273] [2020-09-04 23:10:32,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 23:10:32,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:32,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 23:10:32,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-04 23:10:32,090 INFO L87 Difference]: Start difference. First operand 239 states and 256 transitions. Second operand 15 states. [2020-09-04 23:10:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:32,823 INFO L93 Difference]: Finished difference Result 428 states and 463 transitions. [2020-09-04 23:10:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 23:10:32,824 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 194 [2020-09-04 23:10:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:32,826 INFO L225 Difference]: With dead ends: 428 [2020-09-04 23:10:32,827 INFO L226 Difference]: Without dead ends: 275 [2020-09-04 23:10:32,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=293, Invalid=699, Unknown=0, NotChecked=0, Total=992 [2020-09-04 23:10:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-04 23:10:32,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-09-04 23:10:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-04 23:10:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 295 transitions. [2020-09-04 23:10:32,859 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 295 transitions. Word has length 194 [2020-09-04 23:10:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:32,860 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 295 transitions. [2020-09-04 23:10:32,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 23:10:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 295 transitions. [2020-09-04 23:10:32,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-04 23:10:32,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:32,863 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 17, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:32,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 23:10:32,864 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:32,864 INFO L82 PathProgramCache]: Analyzing trace with hash 374306853, now seen corresponding path program 7 times [2020-09-04 23:10:32,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:32,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145271930] [2020-09-04 23:10:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:33,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 23:10:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 23:10:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 746 proven. 80 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2020-09-04 23:10:33,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145271930] [2020-09-04 23:10:33,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:10:33,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-04 23:10:33,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415860981] [2020-09-04 23:10:33,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 23:10:33,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:33,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 23:10:33,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-04 23:10:33,165 INFO L87 Difference]: Start difference. First operand 275 states and 295 transitions. Second operand 9 states. [2020-09-04 23:10:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:33,597 INFO L93 Difference]: Finished difference Result 512 states and 545 transitions. [2020-09-04 23:10:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 23:10:33,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2020-09-04 23:10:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:33,600 INFO L225 Difference]: With dead ends: 512 [2020-09-04 23:10:33,600 INFO L226 Difference]: Without dead ends: 350 [2020-09-04 23:10:33,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-09-04 23:10:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-09-04 23:10:33,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 272. [2020-09-04 23:10:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-04 23:10:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 290 transitions. [2020-09-04 23:10:33,637 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 290 transitions. Word has length 221 [2020-09-04 23:10:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:33,638 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 290 transitions. [2020-09-04 23:10:33,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 23:10:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 290 transitions. [2020-09-04 23:10:33,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-04 23:10:33,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:33,641 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 16, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:33,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 23:10:33,643 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:33,643 INFO L82 PathProgramCache]: Analyzing trace with hash -368860214, now seen corresponding path program 8 times [2020-09-04 23:10:33,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:33,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61845047] [2020-09-04 23:10:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:33,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 23:10:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 23:10:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1461 backedges. 4 proven. 680 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2020-09-04 23:10:33,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61845047] [2020-09-04 23:10:33,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:10:33,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 23:10:33,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976760709] [2020-09-04 23:10:33,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 23:10:33,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:33,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 23:10:33,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:10:33,918 INFO L87 Difference]: Start difference. First operand 272 states and 290 transitions. Second operand 7 states. [2020-09-04 23:10:34,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:34,225 INFO L93 Difference]: Finished difference Result 272 states and 290 transitions. [2020-09-04 23:10:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 23:10:34,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-09-04 23:10:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:34,227 INFO L225 Difference]: With dead ends: 272 [2020-09-04 23:10:34,227 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:10:34,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-04 23:10:34,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:10:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:10:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:10:34,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:10:34,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 224 [2020-09-04 23:10:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:34,230 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:10:34,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 23:10:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:10:34,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:10:34,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 23:10:34,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:10:34,466 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 29 [2020-09-04 23:10:34,847 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 35 [2020-09-04 23:10:34,986 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 35 [2020-09-04 23:10:35,253 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 35 [2020-09-04 23:10:35,670 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 45 [2020-09-04 23:10:35,799 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 35 [2020-09-04 23:10:36,961 INFO L271 CegarLoopResult]: At program point L118(line 118) the Hoare annotation is: true [2020-09-04 23:10:36,961 INFO L271 CegarLoopResult]: At program point L118-1(line 118) the Hoare annotation is: true [2020-09-04 23:10:36,961 INFO L271 CegarLoopResult]: At program point L118-2(line 118) the Hoare annotation is: true [2020-09-04 23:10:36,961 INFO L271 CegarLoopResult]: At program point L118-3(line 118) the Hoare annotation is: true [2020-09-04 23:10:36,961 INFO L271 CegarLoopResult]: At program point L118-4(line 118) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L118-5(line 118) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L118-6(line 118) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L118-7(line 118) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L135(line 135) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L135-1(line 135) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L119(line 119) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L119-3(lines 119 126) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L119-4(line 119) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L119-5(line 119) the Hoare annotation is: true [2020-09-04 23:10:36,962 INFO L271 CegarLoopResult]: At program point L119-6(lines 119 126) the Hoare annotation is: true [2020-09-04 23:10:36,963 INFO L271 CegarLoopResult]: At program point L119-7(lines 119 126) the Hoare annotation is: true [2020-09-04 23:10:36,963 INFO L271 CegarLoopResult]: At program point L136(line 136) the Hoare annotation is: true [2020-09-04 23:10:36,963 INFO L271 CegarLoopResult]: At program point L136-3(line 136) the Hoare annotation is: true [2020-09-04 23:10:36,963 INFO L271 CegarLoopResult]: At program point L136-4(line 136) the Hoare annotation is: true [2020-09-04 23:10:36,963 INFO L271 CegarLoopResult]: At program point L136-5(lines 136 142) the Hoare annotation is: true [2020-09-04 23:10:36,963 INFO L271 CegarLoopResult]: At program point L136-6(lines 136 142) the Hoare annotation is: true [2020-09-04 23:10:36,964 INFO L271 CegarLoopResult]: At program point ludcmpEXIT(lines 109 153) the Hoare annotation is: true [2020-09-04 23:10:36,964 INFO L264 CegarLoopResult]: At program point ludcmpENTRY(lines 109 153) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,964 INFO L271 CegarLoopResult]: At program point L121(line 121) the Hoare annotation is: true [2020-09-04 23:10:36,964 INFO L271 CegarLoopResult]: At program point L121-1(line 121) the Hoare annotation is: true [2020-09-04 23:10:36,964 INFO L271 CegarLoopResult]: At program point L121-2(line 121) the Hoare annotation is: true [2020-09-04 23:10:36,964 INFO L271 CegarLoopResult]: At program point L138(line 138) the Hoare annotation is: true [2020-09-04 23:10:36,964 INFO L271 CegarLoopResult]: At program point L138-1(line 138) the Hoare annotation is: true [2020-09-04 23:10:36,965 INFO L271 CegarLoopResult]: At program point L138-2(line 138) the Hoare annotation is: true [2020-09-04 23:10:36,965 INFO L271 CegarLoopResult]: At program point L122(lines 122 124) the Hoare annotation is: true [2020-09-04 23:10:36,965 INFO L271 CegarLoopResult]: At program point L122-1(lines 122 124) the Hoare annotation is: true [2020-09-04 23:10:36,965 INFO L271 CegarLoopResult]: At program point L139(line 139) the Hoare annotation is: true [2020-09-04 23:10:36,965 INFO L271 CegarLoopResult]: At program point L139-3(lines 139 140) the Hoare annotation is: true [2020-09-04 23:10:36,965 INFO L271 CegarLoopResult]: At program point L139-4(line 139) the Hoare annotation is: true [2020-09-04 23:10:36,966 INFO L271 CegarLoopResult]: At program point L139-5(line 139) the Hoare annotation is: true [2020-09-04 23:10:36,966 INFO L271 CegarLoopResult]: At program point L139-6(lines 139 140) the Hoare annotation is: true [2020-09-04 23:10:36,966 INFO L271 CegarLoopResult]: At program point L139-7(lines 139 140) the Hoare annotation is: true [2020-09-04 23:10:36,966 INFO L271 CegarLoopResult]: At program point L123(line 123) the Hoare annotation is: true [2020-09-04 23:10:36,966 INFO L271 CegarLoopResult]: At program point L123-3(lines 123 124) the Hoare annotation is: true [2020-09-04 23:10:36,966 INFO L271 CegarLoopResult]: At program point L123-4(line 123) the Hoare annotation is: true [2020-09-04 23:10:36,967 INFO L271 CegarLoopResult]: At program point L123-5(line 123) the Hoare annotation is: true [2020-09-04 23:10:36,967 INFO L271 CegarLoopResult]: At program point L123-6(lines 123 124) the Hoare annotation is: true [2020-09-04 23:10:36,967 INFO L271 CegarLoopResult]: At program point L140(line 140) the Hoare annotation is: true [2020-09-04 23:10:36,967 INFO L271 CegarLoopResult]: At program point L140-1(line 140) the Hoare annotation is: true [2020-09-04 23:10:36,967 INFO L271 CegarLoopResult]: At program point L140-2(line 140) the Hoare annotation is: true [2020-09-04 23:10:36,967 INFO L271 CegarLoopResult]: At program point L140-3(line 140) the Hoare annotation is: true [2020-09-04 23:10:36,967 INFO L271 CegarLoopResult]: At program point L140-4(line 140) the Hoare annotation is: true [2020-09-04 23:10:36,968 INFO L271 CegarLoopResult]: At program point L124(line 124) the Hoare annotation is: true [2020-09-04 23:10:36,968 INFO L271 CegarLoopResult]: At program point L124-1(line 124) the Hoare annotation is: true [2020-09-04 23:10:36,968 INFO L271 CegarLoopResult]: At program point L124-2(line 124) the Hoare annotation is: true [2020-09-04 23:10:36,968 INFO L271 CegarLoopResult]: At program point L124-3(line 124) the Hoare annotation is: true [2020-09-04 23:10:36,968 INFO L271 CegarLoopResult]: At program point L124-4(line 124) the Hoare annotation is: true [2020-09-04 23:10:36,968 INFO L271 CegarLoopResult]: At program point L141(lines 136 142) the Hoare annotation is: true [2020-09-04 23:10:36,968 INFO L271 CegarLoopResult]: At program point L125(line 125) the Hoare annotation is: true [2020-09-04 23:10:36,969 INFO L271 CegarLoopResult]: At program point L125-1(line 125) the Hoare annotation is: true [2020-09-04 23:10:36,969 INFO L264 CegarLoopResult]: At program point L109(lines 109 153) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,969 INFO L264 CegarLoopResult]: At program point L109-1(lines 109 153) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,969 INFO L271 CegarLoopResult]: At program point L143(line 143) the Hoare annotation is: true [2020-09-04 23:10:36,969 INFO L271 CegarLoopResult]: At program point L143-1(line 143) the Hoare annotation is: true [2020-09-04 23:10:36,969 INFO L271 CegarLoopResult]: At program point L143-2(line 143) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L143-3(line 143) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L127-2(line 127) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L127-3(line 127) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L127-4(lines 127 133) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L144(line 144) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L144-3(lines 144 150) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L144-4(line 144) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L144-5(line 144) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L144-6(lines 144 150) the Hoare annotation is: true [2020-09-04 23:10:36,970 INFO L271 CegarLoopResult]: At program point L144-7(lines 144 150) the Hoare annotation is: true [2020-09-04 23:10:36,971 INFO L264 CegarLoopResult]: At program point L112(line 112) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,971 INFO L264 CegarLoopResult]: At program point L112-1(line 112) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,971 INFO L264 CegarLoopResult]: At program point L112-2(line 112) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,971 INFO L271 CegarLoopResult]: At program point L129(line 129) the Hoare annotation is: true [2020-09-04 23:10:36,971 INFO L271 CegarLoopResult]: At program point L129-1(line 129) the Hoare annotation is: true [2020-09-04 23:10:36,971 INFO L271 CegarLoopResult]: At program point L129-2(line 129) the Hoare annotation is: true [2020-09-04 23:10:36,971 INFO L271 CegarLoopResult]: At program point L146(line 146) the Hoare annotation is: true [2020-09-04 23:10:36,971 INFO L264 CegarLoopResult]: At program point L113(line 113) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,972 INFO L271 CegarLoopResult]: At program point L146-1(line 146) the Hoare annotation is: true [2020-09-04 23:10:36,972 INFO L264 CegarLoopResult]: At program point L113-1(line 113) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,972 INFO L271 CegarLoopResult]: At program point L146-2(line 146) the Hoare annotation is: true [2020-09-04 23:10:36,972 INFO L271 CegarLoopResult]: At program point L113-2(lines 110 153) the Hoare annotation is: true [2020-09-04 23:10:36,972 INFO L271 CegarLoopResult]: At program point L113-3(line 113) the Hoare annotation is: true [2020-09-04 23:10:36,972 INFO L271 CegarLoopResult]: At program point L113-4(line 113) the Hoare annotation is: true [2020-09-04 23:10:36,972 INFO L271 CegarLoopResult]: At program point L113-5(line 113) the Hoare annotation is: true [2020-09-04 23:10:36,973 INFO L271 CegarLoopResult]: At program point L113-6(line 113) the Hoare annotation is: true [2020-09-04 23:10:36,973 INFO L271 CegarLoopResult]: At program point L113-7(line 113) the Hoare annotation is: true [2020-09-04 23:10:36,973 INFO L271 CegarLoopResult]: At program point L113-8(line 113) the Hoare annotation is: true [2020-09-04 23:10:36,973 INFO L271 CegarLoopResult]: At program point ludcmpFINAL(lines 109 153) the Hoare annotation is: true [2020-09-04 23:10:36,973 INFO L271 CegarLoopResult]: At program point L130(line 130) the Hoare annotation is: true [2020-09-04 23:10:36,973 INFO L271 CegarLoopResult]: At program point L130-3(lines 130 131) the Hoare annotation is: true [2020-09-04 23:10:36,973 INFO L271 CegarLoopResult]: At program point L130-4(line 130) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L130-5(line 130) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L130-6(lines 130 131) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L130-7(lines 130 131) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L147(line 147) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L147-3(lines 147 148) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L147-4(line 147) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L147-5(line 147) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L147-6(lines 147 148) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L147-7(lines 147 148) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L131(line 131) the Hoare annotation is: true [2020-09-04 23:10:36,974 INFO L271 CegarLoopResult]: At program point L131-1(line 131) the Hoare annotation is: true [2020-09-04 23:10:36,975 INFO L271 CegarLoopResult]: At program point L131-2(line 131) the Hoare annotation is: true [2020-09-04 23:10:36,975 INFO L271 CegarLoopResult]: At program point L131-3(line 131) the Hoare annotation is: true [2020-09-04 23:10:36,975 INFO L271 CegarLoopResult]: At program point L131-4(line 131) the Hoare annotation is: true [2020-09-04 23:10:36,975 INFO L271 CegarLoopResult]: At program point L148(line 148) the Hoare annotation is: true [2020-09-04 23:10:36,975 INFO L271 CegarLoopResult]: At program point L115(line 115) the Hoare annotation is: true [2020-09-04 23:10:36,975 INFO L271 CegarLoopResult]: At program point L148-1(line 148) the Hoare annotation is: true [2020-09-04 23:10:36,975 INFO L271 CegarLoopResult]: At program point L148-2(line 148) the Hoare annotation is: true [2020-09-04 23:10:36,976 INFO L271 CegarLoopResult]: At program point L148-3(line 148) the Hoare annotation is: true [2020-09-04 23:10:36,976 INFO L271 CegarLoopResult]: At program point L148-4(line 148) the Hoare annotation is: true [2020-09-04 23:10:36,976 INFO L271 CegarLoopResult]: At program point L132(lines 127 133) the Hoare annotation is: true [2020-09-04 23:10:36,976 INFO L271 CegarLoopResult]: At program point L149(line 149) the Hoare annotation is: true [2020-09-04 23:10:36,976 INFO L271 CegarLoopResult]: At program point L116(line 116) the Hoare annotation is: true [2020-09-04 23:10:36,976 INFO L271 CegarLoopResult]: At program point L149-1(line 149) the Hoare annotation is: true [2020-09-04 23:10:36,976 INFO L271 CegarLoopResult]: At program point L116-3(lines 116 134) the Hoare annotation is: true [2020-09-04 23:10:36,976 INFO L271 CegarLoopResult]: At program point L116-4(line 116) the Hoare annotation is: true [2020-09-04 23:10:36,977 INFO L271 CegarLoopResult]: At program point L116-5(line 116) the Hoare annotation is: true [2020-09-04 23:10:36,977 INFO L271 CegarLoopResult]: At program point L116-6(lines 116 134) the Hoare annotation is: true [2020-09-04 23:10:36,977 INFO L271 CegarLoopResult]: At program point L116-7(lines 116 134) the Hoare annotation is: true [2020-09-04 23:10:36,977 INFO L271 CegarLoopResult]: At program point L69-4(line 69) the Hoare annotation is: true [2020-09-04 23:10:36,977 INFO L271 CegarLoopResult]: At program point L69-5(line 69) the Hoare annotation is: true [2020-09-04 23:10:36,977 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 23:10:36,977 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-09-04 23:10:36,978 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:10:36,978 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#x~0.offset| |old(~#x~0.offset)|) (= |old(#memory_real)| |#memory_real|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,978 INFO L271 CegarLoopResult]: At program point L69(line 69) the Hoare annotation is: true [2020-09-04 23:10:36,978 INFO L271 CegarLoopResult]: At program point L69-1(line 69) the Hoare annotation is: true [2020-09-04 23:10:36,978 INFO L271 CegarLoopResult]: At program point L69-2(line 69) the Hoare annotation is: true [2020-09-04 23:10:36,978 INFO L271 CegarLoopResult]: At program point L69-3(line 69) the Hoare annotation is: true [2020-09-04 23:10:36,979 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:10:36,979 INFO L271 CegarLoopResult]: At program point L79(line 79) the Hoare annotation is: true [2020-09-04 23:10:36,979 INFO L271 CegarLoopResult]: At program point L78(lines 78 79) the Hoare annotation is: true [2020-09-04 23:10:36,979 INFO L271 CegarLoopResult]: At program point L78-1(line 78) the Hoare annotation is: true [2020-09-04 23:10:36,979 INFO L271 CegarLoopResult]: At program point L76(line 76) the Hoare annotation is: true [2020-09-04 23:10:36,979 INFO L271 CegarLoopResult]: At program point L78-3(lines 78 79) the Hoare annotation is: true [2020-09-04 23:10:36,979 INFO L271 CegarLoopResult]: At program point fabsEXIT(lines 74 81) the Hoare annotation is: true [2020-09-04 23:10:36,980 INFO L271 CegarLoopResult]: At program point fabsENTRY(lines 74 81) the Hoare annotation is: true [2020-09-04 23:10:36,980 INFO L271 CegarLoopResult]: At program point fabsFINAL(lines 74 81) the Hoare annotation is: true [2020-09-04 23:10:36,980 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:10:36,980 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 23:10:36,980 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 23:10:36,980 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:10:36,980 INFO L264 CegarLoopResult]: At program point L97(line 97) the Hoare annotation is: (and (<= main_~j~0 main_~n~0) (< main_~j~0 (+ main_~i~0 1)) (<= main_~i~0 main_~j~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,981 INFO L264 CegarLoopResult]: At program point L97-1(line 97) the Hoare annotation is: (and (<= main_~j~0 main_~n~0) (< main_~j~0 (+ main_~i~0 1)) (<= main_~i~0 main_~j~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,981 INFO L264 CegarLoopResult]: At program point L97-2(line 97) the Hoare annotation is: (and (<= main_~j~0 main_~n~0) (< main_~j~0 (+ main_~i~0 1)) (<= main_~i~0 main_~j~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,981 INFO L264 CegarLoopResult]: At program point L93(line 93) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,981 INFO L264 CegarLoopResult]: At program point L97-4(line 97) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~j~0 main_~n~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,981 INFO L264 CegarLoopResult]: At program point L89(line 89) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (<= main_~n~0 5) (<= 5 main_~n~0) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,981 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 83 107) the Hoare annotation is: (<= 5 main_~n~0) [2020-09-04 23:10:36,982 INFO L264 CegarLoopResult]: At program point L106(line 106) the Hoare annotation is: (<= 5 main_~n~0) [2020-09-04 23:10:36,982 INFO L264 CegarLoopResult]: At program point L98(line 98) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~j~0 main_~n~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,982 INFO L264 CegarLoopResult]: At program point L98-1(line 98) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~j~0 main_~n~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,982 INFO L264 CegarLoopResult]: At program point L94(line 94) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,982 INFO L264 CegarLoopResult]: At program point L94-3(lines 94 99) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~j~0 main_~n~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,982 INFO L264 CegarLoopResult]: At program point L94-4(line 94) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~j~0 main_~n~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,982 INFO L264 CegarLoopResult]: At program point L94-5(line 94) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,983 INFO L264 CegarLoopResult]: At program point L94-6(lines 94 99) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,983 INFO L264 CegarLoopResult]: At program point L94-7(lines 94 99) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,983 INFO L264 CegarLoopResult]: At program point L86(line 86) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,983 INFO L264 CegarLoopResult]: At program point L86-1(line 86) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,983 INFO L264 CegarLoopResult]: At program point L86-2(line 86) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,983 INFO L264 CegarLoopResult]: At program point L86-3(line 86) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (<= main_~n~0 5) (<= 5 main_~n~0) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,984 INFO L264 CegarLoopResult]: At program point L91(line 91) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (<= main_~n~0 5) (<= 5 main_~n~0) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,984 INFO L264 CegarLoopResult]: At program point L91-3(line 91) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,984 INFO L264 CegarLoopResult]: At program point L87(line 87) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (<= main_~n~0 5) (<= 5 main_~n~0) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,984 INFO L264 CegarLoopResult]: At program point L91-4(line 91) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,984 INFO L264 CegarLoopResult]: At program point L87-1(line 87) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (<= main_~n~0 5) (<= 5 main_~n~0) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,984 INFO L264 CegarLoopResult]: At program point L91-5(lines 91 102) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,985 INFO L264 CegarLoopResult]: At program point L91-6(lines 91 102) the Hoare annotation is: (<= 5 main_~n~0) [2020-09-04 23:10:36,985 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 83 107) the Hoare annotation is: (<= 5 main_~n~0) [2020-09-04 23:10:36,985 INFO L264 CegarLoopResult]: At program point L104(line 104) the Hoare annotation is: (<= 5 main_~n~0) [2020-09-04 23:10:36,985 INFO L264 CegarLoopResult]: At program point L104-1(line 104) the Hoare annotation is: (<= 5 main_~n~0) [2020-09-04 23:10:36,985 INFO L264 CegarLoopResult]: At program point L104-2(line 104) the Hoare annotation is: (<= 5 main_~n~0) [2020-09-04 23:10:36,985 INFO L264 CegarLoopResult]: At program point L100(line 100) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,986 INFO L264 CegarLoopResult]: At program point L96(line 96) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~j~0 main_~n~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,986 INFO L264 CegarLoopResult]: At program point L96-1(lines 95 99) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~j~0 main_~n~0) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,986 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 83 107) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-04 23:10:36,986 INFO L264 CegarLoopResult]: At program point L101(lines 91 102) the Hoare annotation is: (and (<= main_~i~0 5) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-04 23:10:36,986 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-04 23:10:36,986 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 23:10:36,986 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:10:36,987 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 23:10:36,987 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:10:36,987 INFO L264 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 23:10:37,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:10:37 BoogieIcfgContainer [2020-09-04 23:10:37,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:10:37,014 INFO L168 Benchmark]: Toolchain (without parser) took 11661.53 ms. Allocated memory was 137.9 MB in the beginning and 374.9 MB in the end (delta: 237.0 MB). Free memory was 101.3 MB in the beginning and 167.9 MB in the end (delta: -66.6 MB). Peak memory consumption was 251.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:37,015 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-04 23:10:37,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.76 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 178.0 MB in the end (delta: -76.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:37,017 INFO L168 Benchmark]: Boogie Preprocessor took 60.83 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 175.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:37,018 INFO L168 Benchmark]: RCFGBuilder took 678.20 ms. Allocated memory is still 200.8 MB. Free memory was 175.3 MB in the beginning and 136.4 MB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:37,018 INFO L168 Benchmark]: TraceAbstraction took 10377.68 ms. Allocated memory was 200.8 MB in the beginning and 374.9 MB in the end (delta: 174.1 MB). Free memory was 136.4 MB in the beginning and 167.9 MB in the end (delta: -31.5 MB). Peak memory consumption was 223.2 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:37,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 539.76 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 178.0 MB in the end (delta: -76.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.83 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 175.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 678.20 ms. Allocated memory is still 200.8 MB. Free memory was 175.3 MB in the beginning and 136.4 MB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10377.68 ms. Allocated memory was 200.8 MB in the beginning and 374.9 MB in the end (delta: 174.1 MB). Free memory was 136.4 MB in the beginning and 167.9 MB in the end (delta: -31.5 MB). Peak memory consumption was 223.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: n <= 5 && 5 <= n - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: (i <= 5 && n <= 5) && 5 <= n - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 123]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 109]: Procedure Contract for ludcmp Derived contract for procedure ludcmp: 1 - ProcedureContractResult [Line: 74]: Procedure Contract for fabs Derived contract for procedure fabs: 1 - ProcedureContractResult [Line: 83]: Procedure Contract for main Derived contract for procedure main: 5 <= n - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 186 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 11, TraceHistogramMax: 18, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 588 SDtfs, 940 SDslu, 1239 SDs, 0 SdLazy, 2055 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 213 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 210 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 186 LocationsWithAnnotation, 544 PreInvPairs, 1012 NumberOfFragments, 660 HoareAnnotationTreeSize, 544 FomulaSimplifications, 126886 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 186 FomulaSimplificationsInter, 1719 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1281 NumberOfCodeBlocks, 1281 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1270 ConstructedInterpolants, 0 QuantifiedInterpolants, 522234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 4001/5113 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...