/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=NARROWEST --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.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:29:54,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:29:54,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:29:54,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:29:54,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:29:54,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:29:54,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:29:54,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:29:54,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:29:54,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:29:54,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:29:54,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:29:54,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:29:54,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:29:54,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:29:54,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:29:54,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:29:54,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:29:54,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:29:54,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:29:54,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:29:54,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:29:54,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:29:54,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:29:54,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:29:54,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:29:54,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:29:54,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:29:54,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:29:54,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:29:54,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:29:54,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:29:54,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:29:54,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:29:54,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:29:54,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:29:54,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:29:54,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:29:54,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:29:54,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:29:54,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:29:54,379 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 21:29:54,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:29:54,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:29:54,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:29:54,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:29:54,423 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:29:54,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:29:54,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:29:54,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:29:54,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:29:54,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:29:54,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:29:54,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:29:54,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:29:54,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:29:54,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:29:54,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:29:54,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:29:54,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:29:54,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:29:54,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:29:54,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:29:54,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:29:54,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:29:54,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:29:54,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:29:54,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:29:54,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:29:54,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:29:54,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:29:54,429 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=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:29:54,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:29:54,765 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:29:54,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:29:54,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:29:54,770 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:29:54,770 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-08-21 21:29:54,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4a242e6d/e001594f1b7e47759fa2293293295ab5/FLAG81dc9419c [2020-08-21 21:29:55,299 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:29:55,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2020-08-21 21:29:55,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4a242e6d/e001594f1b7e47759fa2293293295ab5/FLAG81dc9419c [2020-08-21 21:29:55,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4a242e6d/e001594f1b7e47759fa2293293295ab5 [2020-08-21 21:29:55,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:29:55,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:29:55,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:29:55,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:29:55,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:29:55,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:29:55" (1/1) ... [2020-08-21 21:29:55,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55, skipping insertion in model container [2020-08-21 21:29:55,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:29:55" (1/1) ... [2020-08-21 21:29:55,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:29:55,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:29:55,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:29:55,943 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:29:55,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:29:55,992 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:29:55,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55 WrapperNode [2020-08-21 21:29:55,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:29:55,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:29:55,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:29:55,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:29:56,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55" (1/1) ... [2020-08-21 21:29:56,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55" (1/1) ... [2020-08-21 21:29:56,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55" (1/1) ... [2020-08-21 21:29:56,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55" (1/1) ... [2020-08-21 21:29:56,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55" (1/1) ... [2020-08-21 21:29:56,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55" (1/1) ... [2020-08-21 21:29:56,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55" (1/1) ... [2020-08-21 21:29:56,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:29:56,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:29:56,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:29:56,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:29:56,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55" (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 21:29:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:29:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:29:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 21:29:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:29:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:29:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 21:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 21:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 21:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 21:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:29:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:29:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:29:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:29:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:29:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:29:56,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:29:56,512 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 21:29:56,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:29:56 BoogieIcfgContainer [2020-08-21 21:29:56,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:29:56,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:29:56,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:29:56,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:29:56,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:29:55" (1/3) ... [2020-08-21 21:29:56,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424447f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:29:56, skipping insertion in model container [2020-08-21 21:29:56,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:29:55" (2/3) ... [2020-08-21 21:29:56,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424447f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:29:56, skipping insertion in model container [2020-08-21 21:29:56,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:29:56" (3/3) ... [2020-08-21 21:29:56,528 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2020-08-21 21:29:56,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:29:56,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-21 21:29:56,596 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-21 21:29:56,619 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:29:56,620 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:29:56,620 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:29:56,620 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:29:56,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:29:56,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:29:56,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:29:56,623 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:29:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-21 21:29:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 21:29:56,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:56,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:29:56,652 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:56,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1504353719, now seen corresponding path program 1 times [2020-08-21 21:29:56,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:56,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908198681] [2020-08-21 21:29:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:29:56,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908198681] [2020-08-21 21:29:56,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:56,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:29:56,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797025739] [2020-08-21 21:29:56,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:29:56,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:56,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:29:56,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:29:56,957 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-08-21 21:29:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:57,174 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2020-08-21 21:29:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:29:57,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-08-21 21:29:57,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:57,200 INFO L225 Difference]: With dead ends: 51 [2020-08-21 21:29:57,200 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 21:29:57,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:29:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 21:29:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-08-21 21:29:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 21:29:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-08-21 21:29:57,275 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 13 [2020-08-21 21:29:57,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:57,276 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-08-21 21:29:57,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:29:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-08-21 21:29:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 21:29:57,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:57,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:29:57,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:29:57,279 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:57,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1581018098, now seen corresponding path program 1 times [2020-08-21 21:29:57,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:57,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560130667] [2020-08-21 21:29:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:29:57,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560130667] [2020-08-21 21:29:57,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:57,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:29:57,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104809249] [2020-08-21 21:29:57,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:29:57,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:57,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:29:57,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:29:57,423 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-08-21 21:29:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:57,533 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-08-21 21:29:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 21:29:57,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-21 21:29:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:57,536 INFO L225 Difference]: With dead ends: 51 [2020-08-21 21:29:57,536 INFO L226 Difference]: Without dead ends: 49 [2020-08-21 21:29:57,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 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 21:29:57,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-21 21:29:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2020-08-21 21:29:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 21:29:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-08-21 21:29:57,547 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 14 [2020-08-21 21:29:57,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:57,547 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-08-21 21:29:57,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:29:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-08-21 21:29:57,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 21:29:57,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:57,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:29:57,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:29:57,549 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:57,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1644741047, now seen corresponding path program 1 times [2020-08-21 21:29:57,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:57,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66786233] [2020-08-21 21:29:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:29:57,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66786233] [2020-08-21 21:29:57,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:57,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:29:57,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025941043] [2020-08-21 21:29:57,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:29:57,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:57,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:29:57,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:29:57,618 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 4 states. [2020-08-21 21:29:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:57,728 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-08-21 21:29:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:29:57,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-21 21:29:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:57,730 INFO L225 Difference]: With dead ends: 60 [2020-08-21 21:29:57,731 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 21:29:57,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:29:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 21:29:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-08-21 21:29:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 21:29:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-21 21:29:57,739 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 14 [2020-08-21 21:29:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:57,739 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-21 21:29:57,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:29:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-21 21:29:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 21:29:57,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:57,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:29:57,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:29:57,741 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1824116622, now seen corresponding path program 1 times [2020-08-21 21:29:57,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:57,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871048392] [2020-08-21 21:29:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:29:57,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871048392] [2020-08-21 21:29:57,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:57,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:29:57,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056965422] [2020-08-21 21:29:57,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:29:57,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:57,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:29:57,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:29:57,807 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-08-21 21:29:57,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:29:57,885 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-08-21 21:29:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:29:57,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-08-21 21:29:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:29:57,886 INFO L225 Difference]: With dead ends: 54 [2020-08-21 21:29:57,887 INFO L226 Difference]: Without dead ends: 34 [2020-08-21 21:29:57,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:29:57,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-21 21:29:57,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-08-21 21:29:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 21:29:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-21 21:29:57,893 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 15 [2020-08-21 21:29:57,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:29:57,894 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-21 21:29:57,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:29:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-21 21:29:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 21:29:57,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:29:57,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:29:57,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:29:57,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:29:57,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:29:57,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1385845809, now seen corresponding path program 1 times [2020-08-21 21:29:57,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:29:57,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110062089] [2020-08-21 21:29:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:29:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:58,960 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 88 [2020-08-21 21:29:59,398 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 72 [2020-08-21 21:29:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:29:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:29:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:29:59,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110062089] [2020-08-21 21:29:59,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:29:59,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:29:59,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426705772] [2020-08-21 21:29:59,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:29:59,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:29:59,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:29:59,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:29:59,448 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 10 states. [2020-08-21 21:30:01,832 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 40 [2020-08-21 21:30:02,144 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-08-21 21:30:02,393 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 42 [2020-08-21 21:30:06,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:30:06,771 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-08-21 21:30:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:30:06,772 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-08-21 21:30:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:30:06,775 INFO L225 Difference]: With dead ends: 58 [2020-08-21 21:30:06,775 INFO L226 Difference]: Without dead ends: 56 [2020-08-21 21:30:06,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:30:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-21 21:30:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2020-08-21 21:30:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 21:30:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-21 21:30:06,787 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2020-08-21 21:30:06,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:30:06,787 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-21 21:30:06,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:30:06,787 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-21 21:30:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 21:30:06,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:30:06,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:30:06,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:30:06,789 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:30:06,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:30:06,789 INFO L82 PathProgramCache]: Analyzing trace with hash -624217503, now seen corresponding path program 1 times [2020-08-21 21:30:06,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:30:06,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438608493] [2020-08-21 21:30:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:30:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:30:06,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:30:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:30:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:30:06,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438608493] [2020-08-21 21:30:06,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:30:06,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:30:06,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946830370] [2020-08-21 21:30:06,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:30:06,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:30:06,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:30:06,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:30:06,918 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-08-21 21:30:07,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:30:07,111 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-08-21 21:30:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 21:30:07,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-08-21 21:30:07,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:30:07,113 INFO L225 Difference]: With dead ends: 63 [2020-08-21 21:30:07,113 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 21:30:07,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:30:07,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 21:30:07,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35. [2020-08-21 21:30:07,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 21:30:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-21 21:30:07,123 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 21 [2020-08-21 21:30:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:30:07,123 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-21 21:30:07,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:30:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-21 21:30:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 21:30:07,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:30:07,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:30:07,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:30:07,125 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:30:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:30:07,125 INFO L82 PathProgramCache]: Analyzing trace with hash -640274852, now seen corresponding path program 1 times [2020-08-21 21:30:07,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:30:07,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639811164] [2020-08-21 21:30:07,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:30:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:30:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:30:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:30:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:30:07,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639811164] [2020-08-21 21:30:07,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:30:07,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:30:07,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694326807] [2020-08-21 21:30:07,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:30:07,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:30:07,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:30:07,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:30:07,202 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 7 states. [2020-08-21 21:30:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:30:07,362 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-08-21 21:30:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:30:07,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-08-21 21:30:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:30:07,364 INFO L225 Difference]: With dead ends: 55 [2020-08-21 21:30:07,364 INFO L226 Difference]: Without dead ends: 53 [2020-08-21 21:30:07,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:30:07,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-21 21:30:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2020-08-21 21:30:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 21:30:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-21 21:30:07,375 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 21 [2020-08-21 21:30:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:30:07,375 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-21 21:30:07,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:30:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-21 21:30:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 21:30:07,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:30:07,376 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:30:07,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:30:07,377 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:30:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:30:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash 358048683, now seen corresponding path program 1 times [2020-08-21 21:30:07,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:30:07,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909579299] [2020-08-21 21:30:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:30:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:30:07,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:30:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:30:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:30:07,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909579299] [2020-08-21 21:30:07,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:30:07,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 21:30:07,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515591028] [2020-08-21 21:30:07,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:30:07,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:30:07,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:30:07,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:30:07,531 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-08-21 21:30:09,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:30:09,819 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-21 21:30:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:30:09,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-08-21 21:30:09,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:30:09,821 INFO L225 Difference]: With dead ends: 50 [2020-08-21 21:30:09,821 INFO L226 Difference]: Without dead ends: 29 [2020-08-21 21:30:09,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:30:09,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-21 21:30:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-08-21 21:30:09,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 21:30:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-08-21 21:30:09,829 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2020-08-21 21:30:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:30:09,829 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-08-21 21:30:09,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:30:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-08-21 21:30:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 21:30:09,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:30:09,830 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 21:30:09,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:30:09,831 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:30:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:30:09,831 INFO L82 PathProgramCache]: Analyzing trace with hash -874117243, now seen corresponding path program 1 times [2020-08-21 21:30:09,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:30:09,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585411955] [2020-08-21 21:30:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:30:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:30:11,616 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-08-21 21:30:13,810 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2020-08-21 21:30:16,294 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 118 DAG size of output: 39 [2020-08-21 21:30:16,623 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 40 [2020-08-21 21:30:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:30:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:30:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:30:16,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585411955] [2020-08-21 21:30:16,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:30:16,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 21:30:16,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258915095] [2020-08-21 21:30:16,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:30:16,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:30:16,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:30:16,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:30:16,790 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 11 states. [2020-08-21 21:30:19,495 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-08-21 21:30:19,701 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-08-21 21:30:24,151 WARN L193 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-08-21 21:30:30,830 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-08-21 21:30:31,140 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-08-21 21:30:35,496 WARN L193 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-08-21 21:30:35,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:30:35,498 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-08-21 21:30:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 21:30:35,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-08-21 21:30:35,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:30:35,500 INFO L225 Difference]: With dead ends: 29 [2020-08-21 21:30:35,500 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 21:30:35,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:30:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 21:30:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 21:30:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 21:30:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 21:30:35,501 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-08-21 21:30:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:30:35,502 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 21:30:35,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:30:35,502 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 21:30:35,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 21:30:35,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:30:35,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 21:30:40,012 WARN L193 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2020-08-21 21:30:42,410 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 122 DAG size of output: 56 [2020-08-21 21:30:57,163 WARN L193 SmtUtils]: Spent 14.75 s on a formula simplification. DAG size of input: 119 DAG size of output: 56 [2020-08-21 21:30:57,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 21:30:57,233 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~__return_136~0 |old(~__return_136~0)|) (= |old(#valid)| |#valid|)) [2020-08-21 21:30:57,233 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 21:30:57,234 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 21:30:57,234 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 21:30:57,234 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 21:30:57,234 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 21:30:57,234 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-21 21:30:57,234 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 21:30:57,234 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-21 21:30:57,234 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 21:30:57,235 INFO L268 CegarLoopResult]: For program point L60(lines 60 86) no Hoare annotation was computed. [2020-08-21 21:30:57,235 INFO L268 CegarLoopResult]: For program point L27(lines 27 150) no Hoare annotation was computed. [2020-08-21 21:30:57,235 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 166) no Hoare annotation was computed. [2020-08-21 21:30:57,235 INFO L264 CegarLoopResult]: At program point L85(lines 60 86) the Hoare annotation is: (let ((.cse1 (div main_~main__index2~0 4294967296)) (.cse0 (div main_~main__index1~0 4294967296))) (and (not (= main_~main____CPAchecker_TMP_0~1 0)) (= main_~__VERIFIER_assert__cond~0 1) (<= (+ (* 4294967296 (div (+ main_~main__index2~0 (* .cse0 4294967296) (* .cse1 (- 4294967296)) 4294867297) 4294967296)) 1) main_~main__index1~0) (<= (+ main_~main__index1~0 (* 4294967296 .cse1) 1) (+ main_~main__index2~0 (* 4294967296 .cse0))))) [2020-08-21 21:30:57,235 INFO L268 CegarLoopResult]: For program point L19(lines 19 165) no Hoare annotation was computed. [2020-08-21 21:30:57,235 INFO L268 CegarLoopResult]: For program point L48(lines 48 136) no Hoare annotation was computed. [2020-08-21 21:30:57,236 INFO L264 CegarLoopResult]: At program point L77(lines 44 137) the Hoare annotation is: (let ((.cse4 (div main_~main__index2~0 4294967296))) (let ((.cse0 (* 4294967296 .cse4)) (.cse3 (div main_~main__index1~0 4294967296))) (let ((.cse1 (= main_~__VERIFIER_assert__cond~0 1)) (.cse2 (<= (+ main_~main__index1~0 .cse0 1) (+ main_~main__index2~0 (* 4294967296 .cse3))))) (or (and (<= main_~main__index2~0 (+ .cse0 99999)) .cse1 (= main_~main____CPAchecker_TMP_0~0 1) .cse2) (and .cse1 (not (= main_~__VERIFIER_assert__cond~1 0)) (<= (+ (* 4294967296 (div (+ main_~main__index2~0 (* .cse3 4294967296) (* .cse4 (- 4294967296)) 4294867297) 4294967296)) 1) main_~main__index1~0) .cse2))))) [2020-08-21 21:30:57,236 INFO L268 CegarLoopResult]: For program point L106(lines 106 118) no Hoare annotation was computed. [2020-08-21 21:30:57,236 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-08-21 21:30:57,236 INFO L268 CegarLoopResult]: For program point L69(lines 69 78) no Hoare annotation was computed. [2020-08-21 21:30:57,236 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 108) no Hoare annotation was computed. [2020-08-21 21:30:57,236 INFO L264 CegarLoopResult]: At program point L90(lines 58 91) the Hoare annotation is: false [2020-08-21 21:30:57,237 INFO L268 CegarLoopResult]: For program point L24(lines 24 155) no Hoare annotation was computed. [2020-08-21 21:30:57,237 INFO L264 CegarLoopResult]: At program point L144(lines 29 145) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~main__index2~0 4294967296)))) (and (<= main_~main__index2~0 (+ .cse0 99999)) (= main_~main__loop_entered~0 0) (= main_~main____CPAchecker_TMP_0~0 1) (<= (+ main_~main__index1~0 .cse0 1) (+ main_~main__index2~0 (* 4294967296 (div main_~main__index1~0 4294967296)))))) [2020-08-21 21:30:57,237 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-21 21:30:57,237 INFO L268 CegarLoopResult]: For program point L29(lines 29 145) no Hoare annotation was computed. [2020-08-21 21:30:57,237 INFO L268 CegarLoopResult]: For program point L58(lines 58 91) no Hoare annotation was computed. [2020-08-21 21:30:57,237 INFO L264 CegarLoopResult]: At program point L149(lines 27 150) the Hoare annotation is: false [2020-08-21 21:30:57,237 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 166) no Hoare annotation was computed. [2020-08-21 21:30:57,237 INFO L268 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-08-21 21:30:57,238 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-21 21:30:57,238 INFO L268 CegarLoopResult]: For program point L38(lines 38 137) no Hoare annotation was computed. [2020-08-21 21:30:57,238 INFO L271 CegarLoopResult]: At program point L129(lines 96 130) the Hoare annotation is: true [2020-08-21 21:30:57,238 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 40) no Hoare annotation was computed. [2020-08-21 21:30:57,238 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 166) the Hoare annotation is: (and (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= |old(#valid)| |#valid|)) [2020-08-21 21:30:57,238 INFO L264 CegarLoopResult]: At program point L154(lines 24 155) the Hoare annotation is: (or (= main_~main__loop_entered~0 0) (and (let ((.cse0 (div main_~main__index2~0 4294967296)) (.cse1 (div main_~main__index1~0 4294967296))) (or (<= (+ main_~main__index1~0 (* 4294967296 .cse0)) (+ main_~main__index2~0 (* 4294967296 .cse1))) (let ((.cse6 (select |#memory_int| |main_~#main__array~0.base|))) (let ((.cse5 (select .cse6 (+ (* main_~main__index1~0 4) |main_~#main__array~0.offset| (* .cse1 (- 17179869184))))) (.cse3 (select .cse6 (+ (* main_~main__index2~0 4) |main_~#main__array~0.offset| (* .cse0 (- 17179869184)))))) (let ((.cse4 (+ .cse5 (* 4294967296 (div .cse3 4294967296)))) (.cse2 (* 4294967296 (div .cse5 4294967296)))) (and (<= (+ .cse2 .cse3) .cse4) (< .cse4 (+ .cse2 .cse3 1)))))))) (= main_~__VERIFIER_assert__cond~0 1) (<= main_~main__index2~0 (+ (* 4294967296 (div (+ (* (div (+ main_~main__index1~0 (* main_~main__index2~0 (- 1)) 4294967294) 4294967296) (- 4294967296)) main_~main__index1~0 (- 1)) 4294967296)) 99998)))) [2020-08-21 21:30:57,239 INFO L268 CegarLoopResult]: For program point L55(lines 55 131) no Hoare annotation was computed. [2020-08-21 21:30:57,239 INFO L268 CegarLoopResult]: For program point L22(lines 22 160) no Hoare annotation was computed. [2020-08-21 21:30:57,239 INFO L264 CegarLoopResult]: At program point L117(lines 97 126) the Hoare annotation is: (let ((.cse1 (= main_~__VERIFIER_assert__cond~0 1)) (.cse3 (div main_~main__index2~0 4294967296)) (.cse2 (div main_~main__index1~0 4294967296))) (or (let ((.cse0 (* 4294967296 .cse3))) (and (<= main_~main__index2~0 (+ .cse0 99999)) .cse1 (<= (+ main_~main__index1~0 .cse0 1) (+ main_~main__index2~0 (* 4294967296 .cse2))))) (let ((.cse8 (select |#memory_int| |main_~#main__array~0.base|))) (let ((.cse7 (select .cse8 (+ (* main_~main__index1~0 4) |main_~#main__array~0.offset| (* .cse2 (- 17179869184))))) (.cse5 (select .cse8 (+ (* main_~main__index2~0 4) |main_~#main__array~0.offset| (* .cse3 (- 17179869184)))))) (let ((.cse6 (+ .cse7 (* 4294967296 (div .cse5 4294967296)))) (.cse4 (* 4294967296 (div .cse7 4294967296)))) (and (<= (+ .cse4 .cse5) .cse6) .cse1 (< .cse6 (+ .cse4 .cse5 1)) (<= main_~main__index2~0 (+ (* 4294967296 (div (+ (* (div (+ main_~main__index1~0 (* main_~main__index2~0 (- 1)) 4294967294) 4294967296) (- 4294967296)) main_~main__index1~0 (- 1)) 4294967296)) 99998)))))))) [2020-08-21 21:30:57,259 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,260 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,261 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,262 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,262 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,262 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,263 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,264 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,264 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,264 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,264 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,265 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,265 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,265 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,267 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,267 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,267 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,268 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,268 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,268 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,268 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,268 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,270 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,270 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,270 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,270 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:30:57 BoogieIcfgContainer [2020-08-21 21:30:57,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:30:57,277 INFO L168 Benchmark]: Toolchain (without parser) took 61596.40 ms. Allocated memory was 140.0 MB in the beginning and 275.8 MB in the end (delta: 135.8 MB). Free memory was 101.8 MB in the beginning and 186.0 MB in the end (delta: -84.2 MB). Peak memory consumption was 141.1 MB. Max. memory is 7.1 GB. [2020-08-21 21:30:57,278 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 21:30:57,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.00 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 90.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:30:57,279 INFO L168 Benchmark]: Boogie Preprocessor took 117.44 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 90.3 MB in the beginning and 179.3 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-21 21:30:57,280 INFO L168 Benchmark]: RCFGBuilder took 407.04 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 159.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-08-21 21:30:57,281 INFO L168 Benchmark]: TraceAbstraction took 60755.75 ms. Allocated memory was 201.9 MB in the beginning and 275.8 MB in the end (delta: 73.9 MB). Free memory was 159.4 MB in the beginning and 186.0 MB in the end (delta: -26.6 MB). Peak memory consumption was 136.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:30:57,285 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 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.00 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 90.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.44 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 90.3 MB in the beginning and 179.3 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.04 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 159.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 60755.75 ms. Allocated memory was 201.9 MB in the beginning and 275.8 MB in the end (delta: 73.9 MB). Free memory was 159.4 MB in the beginning and 186.0 MB in the end (delta: -26.6 MB). Peak memory consumption was 136.8 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: 40]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 108]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && __VERIFIER_assert__cond == 1) && main____CPAchecker_TMP_0 == 1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296)) || (((__VERIFIER_assert__cond == 1 && !(__VERIFIER_assert__cond == 0)) && 4294967296 * ((main__index2 + main__index1 / 4294967296 * 4294967296 + main__index2 / 4294967296 * -4294967296 + 4294867297) / 4294967296) + 1 <= main__index1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296)) - InvariantResult [Line: 24]: Loop Invariant [2020-08-21 21:30:57,296 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,296 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,296 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,297 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,297 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,297 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,297 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,297 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,298 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,298 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: main__loop_entered == 0 || (((main__index1 + 4294967296 * (main__index2 / 4294967296) <= main__index2 + 4294967296 * (main__index1 / 4294967296) || (4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] <= unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) && unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) < 4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] + 1)) && __VERIFIER_assert__cond == 1) && main__index2 <= 4294967296 * (((main__index1 + main__index2 * -1 + 4294967294) / 4294967296 * -4294967296 + main__index1 + -1) / 4294967296) + 99998) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 97]: Loop Invariant [2020-08-21 21:30:57,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,303 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,303 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,305 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 21:30:57,305 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && __VERIFIER_assert__cond == 1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296)) || (((4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] <= unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) && __VERIFIER_assert__cond == 1) && unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) < 4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] + 1) && main__index2 <= 4294967296 * (((main__index1 + main__index2 * -1 + 4294967294) / 4294967296 * -4294967296 + main__index1 + -1) / 4294967296) + 99998) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((!(main____CPAchecker_TMP_0 == 0) && __VERIFIER_assert__cond == 1) && 4294967296 * ((main__index2 + main__index1 / 4294967296 * 4294967296 + main__index2 / 4294967296 * -4294967296 + 4294867297) / 4294967296) + 1 <= main__index1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && main__loop_entered == 0) && main____CPAchecker_TMP_0 == 1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 38.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 29.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 21.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 288 SDslu, 382 SDs, 0 SdLazy, 589 SolverSat, 37 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 15.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 83 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 24 NumberOfFragments, 557 HoareAnnotationTreeSize, 12 FomulaSimplifications, 19374 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 1975 FormulaSimplificationTreeSizeReductionInter, 21.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 75619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 3/5 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...