/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:27:24,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:27:24,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:27:24,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:27:24,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:27:24,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:27:24,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:27:24,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:27:24,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:27:24,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:27:24,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:27:24,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:27:24,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:27:24,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:27:24,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:27:24,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:27:24,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:27:24,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:27:24,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:27:24,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:27:24,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:27:24,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:27:24,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:27:24,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:27:24,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:27:24,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:27:24,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:27:24,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:27:24,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:27:24,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:27:24,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:27:24,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:27:24,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:27:24,734 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:27:24,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:27:24,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:27:24,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:27:24,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:27:24,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:27:24,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:27:24,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:27:24,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:27:24,736 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:27:24,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:27:24,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:27:24,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:27:24,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:27:24,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:27:24,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:27:24,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:27:24,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:27:24,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:27:24,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:27:24,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:27:24,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:27:24,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:27:24,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:27:24,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:27:24,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:27:25,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:27:25,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:27:25,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:27:25,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:27:25,078 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:27:25,079 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-08-19 00:27:25,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4fd2bdcd/7601f21e0a9044dda509155348847b38/FLAG69185c7bf [2020-08-19 00:27:25,592 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:27:25,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-1.c [2020-08-19 00:27:25,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4fd2bdcd/7601f21e0a9044dda509155348847b38/FLAG69185c7bf [2020-08-19 00:27:25,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4fd2bdcd/7601f21e0a9044dda509155348847b38 [2020-08-19 00:27:26,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:27:26,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:27:26,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:27:26,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:27:26,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:27:26,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:26,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f5cdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26, skipping insertion in model container [2020-08-19 00:27:26,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:27:25" (1/1) ... [2020-08-19 00:27:26,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:27:26,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:27:26,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:27:26,236 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:27:26,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:27:26,279 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:27:26,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26 WrapperNode [2020-08-19 00:27:26,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:27:26,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:27:26,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:27:26,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:27:26,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26" (1/1) ... [2020-08-19 00:27:26,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26" (1/1) ... [2020-08-19 00:27:26,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26" (1/1) ... [2020-08-19 00:27:26,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26" (1/1) ... [2020-08-19 00:27:26,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26" (1/1) ... [2020-08-19 00:27:26,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26" (1/1) ... [2020-08-19 00:27:26,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26" (1/1) ... [2020-08-19 00:27:26,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:27:26,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:27:26,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:27:26,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:27:26,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:27:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:27:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:27:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 00:27:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:27:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:27:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 00:27:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:27:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:27:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:27:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:27:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:27:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:27:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:27:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:27:26,695 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:27:26,696 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 00:27:26,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:27:26 BoogieIcfgContainer [2020-08-19 00:27:26,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:27:26,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:27:26,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:27:26,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:27:26,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:27:25" (1/3) ... [2020-08-19 00:27:26,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48773cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:27:26, skipping insertion in model container [2020-08-19 00:27:26,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:26" (2/3) ... [2020-08-19 00:27:26,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48773cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:27:26, skipping insertion in model container [2020-08-19 00:27:26,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:27:26" (3/3) ... [2020-08-19 00:27:26,710 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-08-19 00:27:26,724 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:27:26,741 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:27:26,784 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:27:26,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:27:26,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:27:26,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:27:26,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:27:26,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:27:26,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:27:26,837 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:27:26,841 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:27:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-19 00:27:26,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 00:27:26,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:26,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:26,869 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:26,875 INFO L82 PathProgramCache]: Analyzing trace with hash 202253298, now seen corresponding path program 1 times [2020-08-19 00:27:26,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:26,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057349825] [2020-08-19 00:27:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:27:27,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057349825] [2020-08-19 00:27:27,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:27:27,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:27:27,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75108793] [2020-08-19 00:27:27,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:27:27,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:27,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:27:27,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:27:27,094 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-19 00:27:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:27,171 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-19 00:27:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:27:27,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-19 00:27:27,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:27,180 INFO L225 Difference]: With dead ends: 35 [2020-08-19 00:27:27,180 INFO L226 Difference]: Without dead ends: 15 [2020-08-19 00:27:27,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:27:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-19 00:27:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-19 00:27:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-19 00:27:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-19 00:27:27,224 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-08-19 00:27:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:27,224 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-19 00:27:27,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:27:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-19 00:27:27,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 00:27:27,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:27,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:27,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:27:27,226 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:27,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:27,227 INFO L82 PathProgramCache]: Analyzing trace with hash -112667363, now seen corresponding path program 1 times [2020-08-19 00:27:27,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:27,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360529785] [2020-08-19 00:27:27,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:27:27,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360529785] [2020-08-19 00:27:27,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:27:27,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:27:27,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250862690] [2020-08-19 00:27:27,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:27:27,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:27,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:27:27,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:27:27,391 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-08-19 00:27:27,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:27,443 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-08-19 00:27:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:27:27,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-08-19 00:27:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:27,445 INFO L225 Difference]: With dead ends: 24 [2020-08-19 00:27:27,445 INFO L226 Difference]: Without dead ends: 18 [2020-08-19 00:27:27,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:27:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-19 00:27:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-08-19 00:27:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 00:27:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-08-19 00:27:27,453 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-08-19 00:27:27,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:27,454 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-08-19 00:27:27,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:27:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-08-19 00:27:27,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 00:27:27,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:27,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:27,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:27:27,456 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:27,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1912057964, now seen corresponding path program 1 times [2020-08-19 00:27:27,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:27,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978538368] [2020-08-19 00:27:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:27:27,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978538368] [2020-08-19 00:27:27,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:27:27,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 00:27:27,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203207451] [2020-08-19 00:27:27,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:27:27,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:27,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:27:27,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:27:27,735 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 8 states. [2020-08-19 00:27:27,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:27,914 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-08-19 00:27:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:27:27,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-08-19 00:27:27,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:27,916 INFO L225 Difference]: With dead ends: 26 [2020-08-19 00:27:27,917 INFO L226 Difference]: Without dead ends: 20 [2020-08-19 00:27:27,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:27:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-19 00:27:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-08-19 00:27:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 00:27:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-19 00:27:27,924 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-08-19 00:27:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:27,924 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-19 00:27:27,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:27:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-19 00:27:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 00:27:27,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:27,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:27,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:27:27,926 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:27,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1573562706, now seen corresponding path program 1 times [2020-08-19 00:27:27,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:27,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488322801] [2020-08-19 00:27:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:27:28,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488322801] [2020-08-19 00:27:28,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:27:28,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 00:27:28,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220316647] [2020-08-19 00:27:28,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:27:28,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:28,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:27:28,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:27:28,163 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 9 states. [2020-08-19 00:27:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:28,338 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-08-19 00:27:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:27:28,339 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-08-19 00:27:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:28,340 INFO L225 Difference]: With dead ends: 27 [2020-08-19 00:27:28,340 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 00:27:28,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:27:28,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 00:27:28,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-08-19 00:27:28,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 00:27:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-19 00:27:28,346 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-08-19 00:27:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:28,346 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-19 00:27:28,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:27:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-19 00:27:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 00:27:28,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:28,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:27:28,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:27:28,348 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:28,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2070630979, now seen corresponding path program 2 times [2020-08-19 00:27:28,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:28,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028966251] [2020-08-19 00:27:28,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:27:28,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028966251] [2020-08-19 00:27:28,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:27:28,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 00:27:28,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64812123] [2020-08-19 00:27:28,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:27:28,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:28,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:27:28,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:27:28,544 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-08-19 00:27:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:28,568 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-08-19 00:27:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:27:28,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-19 00:27:28,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:28,570 INFO L225 Difference]: With dead ends: 19 [2020-08-19 00:27:28,570 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:27:28,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:27:28,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:27:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:27:28,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:27:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:27:28,571 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-08-19 00:27:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:28,572 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:27:28,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:27:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:27:28,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:27:28,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:27:28,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:27:28,686 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:27:28,686 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-19 00:27:28,687 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:27:28,687 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:27:28,687 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 00:27:28,687 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 00:27:28,687 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:27:28,687 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-19 00:27:28,688 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= main_~menor~0 |main_#t~mem5|) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) [2020-08-19 00:27:28,688 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-08-19 00:27:28,688 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-08-19 00:27:28,688 INFO L268 CegarLoopResult]: For program point L22(lines 22 23) no Hoare annotation was computed. [2020-08-19 00:27:28,688 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2020-08-19 00:27:28,689 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 24) the Hoare annotation is: (or (and (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (<= main_~SIZE~0 main_~j~0) (<= (div main_~j~0 4294967296) 0) (< 0 (+ (div main_~SIZE~0 4294967296) 1))) (and (<= 1 main_~SIZE~0) (= main_~j~0 0) (<= main_~SIZE~0 1) (= |main_~#array~0.offset| 0))) [2020-08-19 00:27:28,689 INFO L268 CegarLoopResult]: For program point L19-4(lines 19 24) no Hoare annotation was computed. [2020-08-19 00:27:28,689 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-08-19 00:27:28,689 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-19 00:27:28,689 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-08-19 00:27:28,690 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-19 00:27:28,690 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-08-19 00:27:28,690 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-08-19 00:27:28,690 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-08-19 00:27:28,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 00:27:28,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 00:27:28,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:27:28 BoogieIcfgContainer [2020-08-19 00:27:28,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:27:28,717 INFO L168 Benchmark]: Toolchain (without parser) took 2711.30 ms. Allocated memory was 138.9 MB in the beginning and 232.8 MB in the end (delta: 93.8 MB). Free memory was 102.0 MB in the beginning and 124.9 MB in the end (delta: -23.0 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:28,718 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 00:27:28,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.82 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 91.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:28,720 INFO L168 Benchmark]: Boogie Preprocessor took 118.82 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.9 MB in the beginning and 178.0 MB in the end (delta: -86.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:28,721 INFO L168 Benchmark]: RCFGBuilder took 300.29 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 163.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:28,722 INFO L168 Benchmark]: TraceAbstraction took 2012.17 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 163.4 MB in the beginning and 124.9 MB in the end (delta: 38.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:28,726 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.82 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 91.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.82 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.9 MB in the beginning and 178.0 MB in the end (delta: -86.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 300.29 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 163.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2012.17 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 163.4 MB in the beginning and 124.9 MB in the end (delta: 38.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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: 19]: Loop Invariant [2020-08-19 00:27:28,737 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 00:27:28,738 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((menor <= unknown-#memory_int-unknown[array][array] && SIZE <= j) && j / 4294967296 <= 0) && 0 < SIZE / 4294967296 + 1) || (((1 <= SIZE && j == 0) && SIZE <= 1) && array == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 27 SDslu, 91 SDs, 0 SdLazy, 214 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 64 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 62 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 3741 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 4/7 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...