/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:51:00,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:51:00,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:51:00,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 22:51:00,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:51:00,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:51:00,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:51:00,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:51:00,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:51:00,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:51:00,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:51:00,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:51:00,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:51:00,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:51:00,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:51:00,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:51:00,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:51:00,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:51:00,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:51:00,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:51:00,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:51:00,209 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:51:00,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:51:00,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:51:00,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:51:00,212 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:51:00,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:51:00,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:51:00,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:51:00,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:51:00,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:51:00,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:51:00,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:51:00,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:51:00,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:51:00,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:51:00,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:51:00,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:51:00,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:51:00,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:51:00,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:51:00,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:51:00,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:51:00,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:51:00,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:51:00,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:51:00,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:51:00,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:51:00,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:51:00,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:51:00,219 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:51:00,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:51:00,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:51:00,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:51:00,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:51:00,587 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:51:00,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-08-18 22:51:00,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70253c19a/d412763c905e4e4db1aaaa49d1e1a1da/FLAG6e4aedaf4 [2020-08-18 22:51:01,115 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:51:01,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-08-18 22:51:01,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70253c19a/d412763c905e4e4db1aaaa49d1e1a1da/FLAG6e4aedaf4 [2020-08-18 22:51:01,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70253c19a/d412763c905e4e4db1aaaa49d1e1a1da [2020-08-18 22:51:01,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:51:01,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:51:01,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:51:01,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:51:01,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:51:01,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:51:01" (1/1) ... [2020-08-18 22:51:01,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b1442d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01, skipping insertion in model container [2020-08-18 22:51:01,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:51:01" (1/1) ... [2020-08-18 22:51:01,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:51:01,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:51:01,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:51:01,758 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:51:01,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:51:01,827 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:51:01,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01 WrapperNode [2020-08-18 22:51:01,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:51:01,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:51:01,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:51:01,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:51:01,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01" (1/1) ... [2020-08-18 22:51:01,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01" (1/1) ... [2020-08-18 22:51:01,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01" (1/1) ... [2020-08-18 22:51:01,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01" (1/1) ... [2020-08-18 22:51:01,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01" (1/1) ... [2020-08-18 22:51:02,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01" (1/1) ... [2020-08-18 22:51:02,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01" (1/1) ... [2020-08-18 22:51:02,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:51:02,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:51:02,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:51:02,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:51:02,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:51:02,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:51:02,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:51:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:51:02,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 22:51:02,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:51:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:51:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:51:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:51:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 22:51:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 22:51:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:51:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:51:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:51:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:51:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:51:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:51:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:51:02,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:51:02,374 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-18 22:51:02,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:51:02 BoogieIcfgContainer [2020-08-18 22:51:02,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:51:02,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:51:02,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:51:02,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:51:02,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:51:01" (1/3) ... [2020-08-18 22:51:02,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562ee1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:51:02, skipping insertion in model container [2020-08-18 22:51:02,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:51:01" (2/3) ... [2020-08-18 22:51:02,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562ee1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:51:02, skipping insertion in model container [2020-08-18 22:51:02,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:51:02" (3/3) ... [2020-08-18 22:51:02,397 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2020-08-18 22:51:02,408 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:51:02,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:51:02,430 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:51:02,456 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:51:02,456 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:51:02,456 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:51:02,456 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:51:02,456 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:51:02,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:51:02,457 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:51:02,457 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:51:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-18 22:51:02,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 22:51:02,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:51:02,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:51:02,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:51:02,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:51:02,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1561713717, now seen corresponding path program 1 times [2020-08-18 22:51:02,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:51:02,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538065175] [2020-08-18 22:51:02,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:51:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:02,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:51:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:51:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:51:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:51:02,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538065175] [2020-08-18 22:51:02,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:51:02,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:51:02,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453449983] [2020-08-18 22:51:02,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:51:02,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:51:02,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:51:02,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:51:02,748 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-08-18 22:51:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:51:02,896 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2020-08-18 22:51:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:51:02,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-18 22:51:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:51:02,909 INFO L225 Difference]: With dead ends: 59 [2020-08-18 22:51:02,910 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 22:51:02,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:51:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 22:51:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-18 22:51:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 22:51:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-08-18 22:51:02,958 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 22 [2020-08-18 22:51:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:51:02,959 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-08-18 22:51:02,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:51:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-08-18 22:51:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 22:51:02,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:51:02,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:51:02,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:51:02,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:51:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:51:02,963 INFO L82 PathProgramCache]: Analyzing trace with hash -258750159, now seen corresponding path program 1 times [2020-08-18 22:51:02,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:51:02,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103025545] [2020-08-18 22:51:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:51:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:03,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:51:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:03,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:51:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:03,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:51:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 22:51:03,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103025545] [2020-08-18 22:51:03,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:51:03,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:51:03,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672784797] [2020-08-18 22:51:03,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:51:03,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:51:03,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:51:03,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:51:03,187 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2020-08-18 22:51:03,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:51:03,509 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-18 22:51:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:51:03,510 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-08-18 22:51:03,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:51:03,511 INFO L225 Difference]: With dead ends: 37 [2020-08-18 22:51:03,512 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 22:51:03,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:51:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 22:51:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-08-18 22:51:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 22:51:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-18 22:51:03,544 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2020-08-18 22:51:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:51:03,545 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-18 22:51:03,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:51:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-18 22:51:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 22:51:03,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:51:03,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:51:03,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:51:03,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:51:03,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:51:03,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1843057556, now seen corresponding path program 1 times [2020-08-18 22:51:03,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:51:03,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32214089] [2020-08-18 22:51:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:51:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:03,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:51:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:03,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:51:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:51:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:51:03,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32214089] [2020-08-18 22:51:03,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:51:03,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:51:03,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97896332] [2020-08-18 22:51:03,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:51:03,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:51:03,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:51:03,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:51:03,701 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 4 states. [2020-08-18 22:51:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:51:03,793 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-08-18 22:51:03,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:51:03,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-18 22:51:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:51:03,795 INFO L225 Difference]: With dead ends: 47 [2020-08-18 22:51:03,795 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 22:51:03,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:51:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 22:51:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-08-18 22:51:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-18 22:51:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-08-18 22:51:03,805 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2020-08-18 22:51:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:51:03,806 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-08-18 22:51:03,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:51:03,806 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-08-18 22:51:03,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-18 22:51:03,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:51:03,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-08-18 22:51:03,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:51:03,809 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:51:03,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:51:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash -506278145, now seen corresponding path program 1 times [2020-08-18 22:51:03,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:51:03,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291399921] [2020-08-18 22:51:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:51:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:04,365 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-08-18 22:51:04,563 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2020-08-18 22:51:04,751 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2020-08-18 22:51:04,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:51:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:51:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:04,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:51:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:04,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:51:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:04,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 22:51:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 22:51:04,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291399921] [2020-08-18 22:51:04,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:51:04,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:51:04,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155225364] [2020-08-18 22:51:04,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:51:04,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:51:04,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:51:04,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:51:05,000 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 12 states. [2020-08-18 22:51:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:51:05,715 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-08-18 22:51:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:51:05,716 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-08-18 22:51:05,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:51:05,718 INFO L225 Difference]: With dead ends: 42 [2020-08-18 22:51:05,718 INFO L226 Difference]: Without dead ends: 40 [2020-08-18 22:51:05,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:51:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-18 22:51:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-08-18 22:51:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 22:51:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-08-18 22:51:05,738 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 37 [2020-08-18 22:51:05,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:51:05,739 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-08-18 22:51:05,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:51:05,739 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-08-18 22:51:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-18 22:51:05,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:51:05,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-08-18 22:51:05,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:51:05,743 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:51:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:51:05,744 INFO L82 PathProgramCache]: Analyzing trace with hash 170703353, now seen corresponding path program 1 times [2020-08-18 22:51:05,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:51:05,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959062257] [2020-08-18 22:51:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:51:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:05,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:51:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:51:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:05,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:51:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:51:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 22:51:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:51:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:51:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 22:51:05,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959062257] [2020-08-18 22:51:05,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:51:05,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-18 22:51:05,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636741727] [2020-08-18 22:51:05,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:51:05,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:51:05,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:51:05,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:51:05,941 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2020-08-18 22:51:06,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:51:06,181 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-08-18 22:51:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 22:51:06,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-08-18 22:51:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:51:06,183 INFO L225 Difference]: With dead ends: 45 [2020-08-18 22:51:06,183 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 22:51:06,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:51:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 22:51:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 22:51:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 22:51:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 22:51:06,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-08-18 22:51:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:51:06,186 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 22:51:06,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:51:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 22:51:06,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 22:51:06,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:51:06,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 22:51:08,534 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-08-18 22:51:10,896 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 82 [2020-08-18 22:51:11,259 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-08-18 22:51:11,267 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 22:51:11,268 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|)) [2020-08-18 22:51:11,268 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 22:51:11,268 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 22:51:11,268 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 22:51:11,268 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 22:51:11,268 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 22:51:11,268 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true [2020-08-18 22:51:11,269 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-08-18 22:51:11,269 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-08-18 22:51:11,269 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-08-18 22:51:11,269 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 22 50) no Hoare annotation was computed. [2020-08-18 22:51:11,269 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 22 50) no Hoare annotation was computed. [2020-08-18 22:51:11,270 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse1 (* 4294967296 (div |main_#t~mem6| 4294967296))) (.cse0 (+ |main_#t~mem6| (* 4294967296 (div |main_#t~mem7| 4294967296))))) (and (< .cse0 (+ |main_#t~mem7| .cse1 1)) (<= (+ |main_#t~mem7| .cse1) .cse0) (<= main_~index1~0 (+ (* 4294967296 (div (+ (* (div (+ main_~index2~0 1) 4294967296) (- 4294967296)) main_~index1~0 (- 1)) 4294967296)) main_~index2~0 1)) (let ((.cse17 (div main_~index2~0 4294967296)) (.cse16 (div main_~index1~0 4294967296))) (let ((.cse3 (* 4294967296 .cse16)) (.cse7 (select |#memory_int| |main_~#array~0.base|)) (.cse14 (* .cse17 (- 17179869184))) (.cse15 (* main_~index2~0 4))) (let ((.cse6 (select .cse7 (+ .cse14 .cse15 |main_~#array~0.offset|))) (.cse2 (* 4294967296 .cse17)) (.cse8 (* .cse16 (- 17179869184))) (.cse9 (* main_~index1~0 4)) (.cse4 (+ .cse3 2147483647))) (or (<= (+ .cse2 main_~index1~0) (+ .cse3 main_~index2~0)) (and (<= main_~index1~0 .cse4) (<= (let ((.cse5 (select .cse7 (+ .cse8 .cse9 |main_~#array~0.offset|)))) (+ .cse5 (* 4294967296 (div (+ (* .cse5 (- 1)) .cse6 4294967295) 4294967296)))) .cse6)) (and (let ((.cse11 (select .cse7 (+ .cse8 .cse9 |main_~#array~0.offset| (- 17179869184))))) (let ((.cse10 (+ .cse2 2147483647)) (.cse13 (* .cse11 (- 1)))) (or (and (< .cse10 main_~index2~0) (let ((.cse12 (select .cse7 (+ .cse14 .cse15 |main_~#array~0.offset| (- 17179869184))))) (<= (+ .cse11 (* 4294967296 (div (+ .cse12 .cse13 4294967295) 4294967296))) .cse12))) (and (<= main_~index2~0 .cse10) (<= (+ .cse11 (* 4294967296 (div (+ .cse6 .cse13 4294967295) 4294967296))) .cse6))))) (< .cse4 main_~index1~0)))))))) [2020-08-18 22:51:11,270 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-08-18 22:51:11,270 INFO L268 CegarLoopResult]: For program point L42(lines 42 48) no Hoare annotation was computed. [2020-08-18 22:51:11,270 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (div main_~index2~0 4294967296))) (let ((.cse0 (select |#memory_int| |main_~#array~0.base|)) (.cse3 (* 4294967296 .cse1)) (.cse2 (div main_~index1~0 4294967296))) (and (= (select .cse0 (+ (* .cse1 (- 17179869184)) (* main_~index2~0 4) |main_~#array~0.offset|)) |main_#t~mem3|) (= (select .cse0 (+ (* .cse2 (- 17179869184)) (* main_~index1~0 4) |main_~#array~0.offset|)) |main_#t~mem2|) (<= main_~index2~0 (+ .cse3 99999)) (<= (+ .cse3 main_~index1~0 1) (+ (* 4294967296 .cse2) main_~index2~0))))) [2020-08-18 22:51:11,271 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-08-18 22:51:11,271 INFO L264 CegarLoopResult]: At program point L34-1(lines 32 40) the Hoare annotation is: (let ((.cse4 (div main_~index2~0 4294967296))) (let ((.cse5 (* 4294967296 .cse4))) (let ((.cse6 (<= main_~index2~0 (+ .cse5 99999)))) (or (and (let ((.cse3 (div main_~index1~0 4294967296))) (or (let ((.cse2 (select |#memory_int| |main_~#array~0.base|))) (let ((.cse1 (select .cse2 (+ (* .cse4 (- 17179869184)) (* main_~index2~0 4) |main_~#array~0.offset|)))) (<= (let ((.cse0 (select .cse2 (+ (* .cse3 (- 17179869184)) (* main_~index1~0 4) |main_~#array~0.offset|)))) (+ .cse0 (* 4294967296 (div (+ (* .cse0 (- 1)) .cse1 4294967295) 4294967296)))) .cse1))) (<= (+ .cse5 main_~index1~0) (+ (* 4294967296 .cse3) main_~index2~0)))) .cse6 (<= main_~index1~0 (+ (* 4294967296 (div (+ (* (div (+ main_~index2~0 1) 4294967296) (- 4294967296)) main_~index1~0 (- 1)) 4294967296)) main_~index2~0 1))) (and .cse6 (= main_~loop_entered~0 0)))))) [2020-08-18 22:51:11,271 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (= main_~loop_entered~0 0) [2020-08-18 22:51:11,271 INFO L268 CegarLoopResult]: For program point L34-2(lines 23 50) no Hoare annotation was computed. [2020-08-18 22:51:11,272 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (= main_~loop_entered~0 0) [2020-08-18 22:51:11,272 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 22 50) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-18 22:51:11,272 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-08-18 22:51:11,272 INFO L264 CegarLoopResult]: At program point L43-2(lines 43 47) the Hoare annotation is: (let ((.cse14 (div main_~index1~0 4294967296)) (.cse15 (div main_~index2~0 4294967296))) (let ((.cse12 (* 4294967296 .cse15)) (.cse13 (* 4294967296 .cse14))) (or (and (let ((.cse3 (select |#memory_int| |main_~#array~0.base|)) (.cse10 (* .cse15 (- 17179869184))) (.cse11 (* main_~index2~0 4))) (let ((.cse2 (select .cse3 (+ .cse10 .cse11 |main_~#array~0.offset|))) (.cse4 (* .cse14 (- 17179869184))) (.cse5 (* main_~index1~0 4)) (.cse0 (+ .cse13 2147483647))) (or (and (<= main_~index1~0 .cse0) (<= (let ((.cse1 (select .cse3 (+ .cse4 .cse5 |main_~#array~0.offset|)))) (+ .cse1 (* 4294967296 (div (+ (* .cse1 (- 1)) .cse2 4294967295) 4294967296)))) .cse2)) (and (let ((.cse7 (select .cse3 (+ .cse4 .cse5 |main_~#array~0.offset| (- 17179869184))))) (let ((.cse6 (+ .cse12 2147483647)) (.cse9 (* .cse7 (- 1)))) (or (and (< .cse6 main_~index2~0) (let ((.cse8 (select .cse3 (+ .cse10 .cse11 |main_~#array~0.offset| (- 17179869184))))) (<= (+ .cse7 (* 4294967296 (div (+ .cse8 .cse9 4294967295) 4294967296))) .cse8))) (and (<= main_~index2~0 .cse6) (<= (+ .cse7 (* 4294967296 (div (+ .cse2 .cse9 4294967295) 4294967296))) .cse2))))) (< .cse0 main_~index1~0))))) (<= main_~index1~0 (+ (* 4294967296 (div (+ (* (div (+ main_~index2~0 1) 4294967296) (- 4294967296)) main_~index1~0 (- 1)) 4294967296)) main_~index2~0 1))) (<= (+ .cse12 main_~index1~0 1) (+ .cse13 main_~index2~0))))) [2020-08-18 22:51:11,273 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~index2~0 4294967296)))) (and (<= main_~index2~0 (+ .cse0 99999)) (<= (+ .cse0 main_~index1~0 1) (+ (* 4294967296 (div main_~index1~0 4294967296)) main_~index2~0)))) [2020-08-18 22:51:11,273 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-08-18 22:51:11,273 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-08-18 22:51:11,273 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2020-08-18 22:51:11,273 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-08-18 22:51:11,273 INFO L268 CegarLoopResult]: For program point L14-2(lines 12 18) no Hoare annotation was computed. [2020-08-18 22:51:11,274 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2020-08-18 22:51:11,274 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-08-18 22:51:11,287 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,295 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,295 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,295 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,296 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,298 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,303 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,305 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,305 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,305 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,306 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,306 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,306 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,306 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:51:11 BoogieIcfgContainer [2020-08-18 22:51:11,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:51:11,311 INFO L168 Benchmark]: Toolchain (without parser) took 9839.31 ms. Allocated memory was 148.9 MB in the beginning and 243.3 MB in the end (delta: 94.4 MB). Free memory was 105.1 MB in the beginning and 151.0 MB in the end (delta: -45.9 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:51:11,312 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:51:11,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.58 ms. Allocated memory is still 148.9 MB. Free memory was 104.9 MB in the beginning and 94.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:51:11,314 INFO L168 Benchmark]: Boogie Preprocessor took 180.74 ms. Allocated memory was 148.9 MB in the beginning and 206.6 MB in the end (delta: 57.7 MB). Free memory was 94.5 MB in the beginning and 183.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:51:11,315 INFO L168 Benchmark]: RCFGBuilder took 369.30 ms. Allocated memory is still 206.6 MB. Free memory was 183.6 MB in the beginning and 167.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:51:11,316 INFO L168 Benchmark]: TraceAbstraction took 8919.63 ms. Allocated memory was 206.6 MB in the beginning and 243.3 MB in the end (delta: 36.7 MB). Free memory was 167.3 MB in the beginning and 151.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:51:11,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 355.58 ms. Allocated memory is still 148.9 MB. Free memory was 104.9 MB in the beginning and 94.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 180.74 ms. Allocated memory was 148.9 MB in the beginning and 206.6 MB in the end (delta: 57.7 MB). Free memory was 94.5 MB in the beginning and 183.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 369.30 ms. Allocated memory is still 206.6 MB. Free memory was 183.6 MB in the beginning and 167.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8919.63 ms. Allocated memory was 206.6 MB in the beginning and 243.3 MB in the end (delta: 36.7 MB). Free memory was 167.3 MB in the beginning and 151.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 52.9 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 - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - 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: 15]: 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: 32]: Loop Invariant [2020-08-18 22:51:11,330 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,333 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] + 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] || 4294967296 * (index2 / 4294967296) + index1 <= 4294967296 * (index1 / 4294967296) + index2) && index2 <= 4294967296 * (index2 / 4294967296) + 99999) && index1 <= 4294967296 * (((index2 + 1) / 4294967296 * -4294967296 + index1 + -1) / 4294967296) + index2 + 1) || (index2 <= 4294967296 * (index2 / 4294967296) + 99999 && loop_entered == 0) - InvariantResult [Line: 43]: Loop Invariant [2020-08-18 22:51:11,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,337 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,338 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,338 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,338 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-18 22:51:11,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((index1 <= 4294967296 * (index1 / 4294967296) + 2147483647 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] + 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array]) || (((4294967296 * (index2 / 4294967296) + 2147483647 < index2 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] + 4294967296 * ((unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array + -17179869184] + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] * -1 + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array + -17179869184]) || (index2 <= 4294967296 * (index2 / 4294967296) + 2147483647 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] + 4294967296 * ((unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] * -1 + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array])) && 4294967296 * (index1 / 4294967296) + 2147483647 < index1)) && index1 <= 4294967296 * (((index2 + 1) / 4294967296 * -4294967296 + index1 + -1) / 4294967296) + index2 + 1) || 4294967296 * (index2 / 4294967296) + index1 + 1 <= 4294967296 * (index1 / 4294967296) + index2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 68 SDslu, 200 SDs, 0 SdLazy, 457 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, 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, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 24 PreInvPairs, 34 NumberOfFragments, 827 HoareAnnotationTreeSize, 24 FomulaSimplifications, 234 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 457 FormulaSimplificationTreeSizeReductionInter, 5.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 58840 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 49/50 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...