/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 20:41:29,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:41:29,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:41:29,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:41:29,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:41:29,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:41:29,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:41:29,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:41:29,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:41:29,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:41:29,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:41:29,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:41:29,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:41:29,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:41:29,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:41:29,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:41:29,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:41:29,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:41:29,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:41:29,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:41:29,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:41:29,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:41:29,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:41:29,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:41:29,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:41:29,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:41:29,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:41:29,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:41:29,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:41:29,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 20:41:29,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:41:29,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:41:29,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:41:29,688 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 [2020-08-21 20:41:29,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:41:29,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:41:29,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:41:29,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:41:29,735 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:41:29,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:41:29,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:41:29,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:41:29,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:41:29,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:41:29,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:41:29,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:41:29,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:41:29,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:41:29,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:41:29,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:41:29,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:41:29,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:41:29,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:41:29,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:41:29,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:41:29,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:41:29,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:41:29,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:41:29,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:41:29,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:41:29,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:41:29,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:41:29,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:41:29,741 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=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:41:30,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:41:30,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:41:30,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:41:30,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:41:30,039 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:41:30,040 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-08-21 20:41:30,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/012ed7405/4785c78b33ea477c96c73c332e833a50/FLAGa269709bf [2020-08-21 20:41:30,553 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:41:30,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-08-21 20:41:30,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/012ed7405/4785c78b33ea477c96c73c332e833a50/FLAGa269709bf [2020-08-21 20:41:30,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/012ed7405/4785c78b33ea477c96c73c332e833a50 [2020-08-21 20:41:30,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:41:30,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:41:30,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:41:30,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:41:30,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:41:30,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:41:30" (1/1) ... [2020-08-21 20:41:30,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9c66bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:30, skipping insertion in model container [2020-08-21 20:41:30,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:41:30" (1/1) ... [2020-08-21 20:41:30,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:41:31,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:41:31,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:41:31,194 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:41:31,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:41:31,244 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:41:31,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31 WrapperNode [2020-08-21 20:41:31,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:41:31,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:41:31,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:41:31,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:41:31,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31" (1/1) ... [2020-08-21 20:41:31,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31" (1/1) ... [2020-08-21 20:41:31,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31" (1/1) ... [2020-08-21 20:41:31,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31" (1/1) ... [2020-08-21 20:41:31,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31" (1/1) ... [2020-08-21 20:41:31,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31" (1/1) ... [2020-08-21 20:41:31,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31" (1/1) ... [2020-08-21 20:41:31,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:41:31,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:41:31,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:41:31,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:41:31,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31" (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 [2020-08-21 20:41:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:41:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:41:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 20:41:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 20:41:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:41:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:41:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 20:41:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 20:41:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 20:41:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 20:41:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:41:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:41:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:41:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:41:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:41:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:41:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:41:31,710 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:41:31,711 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 20:41:31,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:41:31 BoogieIcfgContainer [2020-08-21 20:41:31,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:41:31,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:41:31,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:41:31,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:41:31,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:41:30" (1/3) ... [2020-08-21 20:41:31,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f12269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:41:31, skipping insertion in model container [2020-08-21 20:41:31,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:41:31" (2/3) ... [2020-08-21 20:41:31,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f12269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:41:31, skipping insertion in model container [2020-08-21 20:41:31,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:41:31" (3/3) ... [2020-08-21 20:41:31,741 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2020-08-21 20:41:31,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:41:31,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:41:31,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:41:31,805 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:41:31,805 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:41:31,805 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:41:31,805 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:41:31,805 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:41:31,806 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:41:31,806 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:41:31,806 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:41:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-21 20:41:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 20:41:31,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:41:31,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:41:31,831 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:41:31,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:41:31,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1561713717, now seen corresponding path program 1 times [2020-08-21 20:41:31,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:41:31,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859359293] [2020-08-21 20:41:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:41:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:41:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:41:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:41:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 20:41:32,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859359293] [2020-08-21 20:41:32,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:41:32,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:41:32,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442069476] [2020-08-21 20:41:32,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:41:32,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:41:32,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:41:32,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:41:32,060 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-08-21 20:41:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:41:32,193 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2020-08-21 20:41:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:41:32,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-21 20:41:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:41:32,205 INFO L225 Difference]: With dead ends: 59 [2020-08-21 20:41:32,205 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 20:41:32,209 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 [2020-08-21 20:41:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 20:41:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-21 20:41:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 20:41:32,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-08-21 20:41:32,247 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 22 [2020-08-21 20:41:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:41:32,247 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-08-21 20:41:32,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:41:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-08-21 20:41:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 20:41:32,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:41:32,250 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:41:32,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:41:32,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:41:32,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:41:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash -258750159, now seen corresponding path program 1 times [2020-08-21 20:41:32,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:41:32,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173754444] [2020-08-21 20:41:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:41:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:41:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:41:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:41:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 20:41:32,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173754444] [2020-08-21 20:41:32,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:41:32,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:41:32,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118294796] [2020-08-21 20:41:32,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:41:32,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:41:32,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:41:32,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:41:32,488 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2020-08-21 20:41:32,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:41:32,797 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-21 20:41:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:41:32,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-08-21 20:41:32,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:41:32,799 INFO L225 Difference]: With dead ends: 37 [2020-08-21 20:41:32,799 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 20:41:32,801 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 [2020-08-21 20:41:32,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 20:41:32,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-08-21 20:41:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 20:41:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-21 20:41:32,813 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2020-08-21 20:41:32,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:41:32,813 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-21 20:41:32,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:41:32,814 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-21 20:41:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 20:41:32,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:41:32,815 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] [2020-08-21 20:41:32,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:41:32,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:41:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:41:32,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1843057556, now seen corresponding path program 1 times [2020-08-21 20:41:32,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:41:32,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447161575] [2020-08-21 20:41:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:41:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:41:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:41:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:41:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 20:41:32,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447161575] [2020-08-21 20:41:32,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:41:32,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:41:32,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590486125] [2020-08-21 20:41:32,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:41:32,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:41:32,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:41:32,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:41:32,897 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 4 states. [2020-08-21 20:41:32,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:41:32,992 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-08-21 20:41:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 20:41:32,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-21 20:41:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:41:32,995 INFO L225 Difference]: With dead ends: 47 [2020-08-21 20:41:32,995 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 20:41:32,996 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 [2020-08-21 20:41:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 20:41:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-08-21 20:41:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 20:41:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-08-21 20:41:33,005 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2020-08-21 20:41:33,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:41:33,006 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-08-21 20:41:33,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:41:33,006 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-08-21 20:41:33,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 20:41:33,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:41:33,008 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] [2020-08-21 20:41:33,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:41:33,008 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:41:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:41:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash -506278145, now seen corresponding path program 1 times [2020-08-21 20:41:33,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:41:33,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337569479] [2020-08-21 20:41:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:41:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:33,577 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-08-21 20:41:33,804 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2020-08-21 20:41:33,995 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2020-08-21 20:41:34,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:41:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:41:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:34,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:41:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:41:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 20:41:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 20:41:34,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337569479] [2020-08-21 20:41:34,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:41:34,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 20:41:34,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24968532] [2020-08-21 20:41:34,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:41:34,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:41:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:41:34,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:41:34,279 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 12 states. [2020-08-21 20:41:34,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:41:34,938 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-08-21 20:41:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 20:41:34,939 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-08-21 20:41:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:41:34,940 INFO L225 Difference]: With dead ends: 42 [2020-08-21 20:41:34,941 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 20:41:34,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-08-21 20:41:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 20:41:34,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-08-21 20:41:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 20:41:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-08-21 20:41:34,952 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 37 [2020-08-21 20:41:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:41:34,952 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-08-21 20:41:34,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:41:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-08-21 20:41:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-21 20:41:34,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:41:34,954 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] [2020-08-21 20:41:34,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:41:34,955 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:41:34,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:41:34,955 INFO L82 PathProgramCache]: Analyzing trace with hash 170703353, now seen corresponding path program 1 times [2020-08-21 20:41:34,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:41:34,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640197902] [2020-08-21 20:41:34,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:41:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:35,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:41:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:41:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:35,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:41:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:35,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:41:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:35,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 20:41:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:35,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:41:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:41:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 20:41:35,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640197902] [2020-08-21 20:41:35,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:41:35,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-21 20:41:35,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614296786] [2020-08-21 20:41:35,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 20:41:35,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:41:35,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 20:41:35,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:41:35,091 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2020-08-21 20:41:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:41:35,303 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-08-21 20:41:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 20:41:35,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-08-21 20:41:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:41:35,305 INFO L225 Difference]: With dead ends: 45 [2020-08-21 20:41:35,305 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 20:41:35,306 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 [2020-08-21 20:41:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 20:41:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 20:41:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 20:41:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 20:41:35,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-08-21 20:41:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:41:35,307 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 20:41:35,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 20:41:35,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 20:41:35,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 20:41:35,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:41:35,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 20:41:37,613 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-08-21 20:41:37,721 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-08-21 20:41:54,598 WARN L193 SmtUtils]: Spent 16.78 s on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-08-21 20:41:54,605 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 20:41:54,606 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|)) [2020-08-21 20:41:54,606 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 20:41:54,606 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 20:41:54,606 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 20:41:54,606 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 20:41:54,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 20:41:54,607 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true [2020-08-21 20:41:54,607 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-08-21 20:41:54,607 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-08-21 20:41:54,607 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-08-21 20:41:54,607 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 22 50) no Hoare annotation was computed. [2020-08-21 20:41:54,607 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 22 50) no Hoare annotation was computed. [2020-08-21 20:41:54,609 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)))))))) [2020-08-21 20:41:54,609 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-08-21 20:41:54,609 INFO L268 CegarLoopResult]: For program point L42(lines 42 48) no Hoare annotation was computed. [2020-08-21 20:41:54,609 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))))) [2020-08-21 20:41:54,610 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-08-21 20:41:54,610 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)))))) [2020-08-21 20:41:54,610 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (= main_~loop_entered~0 0) [2020-08-21 20:41:54,610 INFO L268 CegarLoopResult]: For program point L34-2(lines 23 50) no Hoare annotation was computed. [2020-08-21 20:41:54,610 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (= main_~loop_entered~0 0) [2020-08-21 20:41:54,610 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 22 50) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-21 20:41:54,611 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-08-21 20:41:54,611 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))))) [2020-08-21 20:41:54,611 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)))) [2020-08-21 20:41:54,611 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-08-21 20:41:54,612 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-08-21 20:41:54,612 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2020-08-21 20:41:54,612 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-08-21 20:41:54,612 INFO L268 CegarLoopResult]: For program point L14-2(lines 12 18) no Hoare annotation was computed. [2020-08-21 20:41:54,612 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2020-08-21 20:41:54,612 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-08-21 20:41:54,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,627 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,627 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,634 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,634 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,634 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,634 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,637 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,638 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,638 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,638 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,639 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,639 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,639 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,640 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,640 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,640 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,640 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,641 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,643 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,643 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,643 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,643 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,644 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,645 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,645 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,645 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,646 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:41:54 BoogieIcfgContainer [2020-08-21 20:41:54,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:41:54,651 INFO L168 Benchmark]: Toolchain (without parser) took 23684.93 ms. Allocated memory was 141.6 MB in the beginning and 243.3 MB in the end (delta: 101.7 MB). Free memory was 103.6 MB in the beginning and 159.6 MB in the end (delta: -56.0 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-08-21 20:41:54,652 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 20:41:54,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.42 ms. Allocated memory is still 141.6 MB. Free memory was 103.4 MB in the beginning and 92.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-21 20:41:54,655 INFO L168 Benchmark]: Boogie Preprocessor took 128.14 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 182.0 MB in the end (delta: -89.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 20:41:54,656 INFO L168 Benchmark]: RCFGBuilder took 342.42 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 166.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-08-21 20:41:54,657 INFO L168 Benchmark]: TraceAbstraction took 22916.51 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 165.4 MB in the beginning and 159.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. [2020-08-21 20:41:54,661 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.42 ms. Allocated memory is still 141.6 MB. Free memory was 103.4 MB in the beginning and 92.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.14 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 182.0 MB in the end (delta: -89.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.42 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 166.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22916.51 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 165.4 MB in the beginning and 159.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 44.6 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 [2020-08-21 20:41:54,674 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,674 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,674 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,675 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,675 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,676 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,676 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,676 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 [2020-08-21 20:41:54,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,680 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,681 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,681 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,683 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,683 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,683 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,683 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 20:41:54,684 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: 3.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 19.2s, 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, 1.3s 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, 19.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s 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...