/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:11:42,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:11:42,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:11:42,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:11:42,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:11:42,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:11:42,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:11:42,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:11:42,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:11:42,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:11:42,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:11:42,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:11:42,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:11:42,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:11:42,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:11:42,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:11:42,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:11:42,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:11:42,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:11:42,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:11:42,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:11:42,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:11:42,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:11:42,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:11:42,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:11:42,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:11:42,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:11:42,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:11:42,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:11:42,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:11:42,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:11:42,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:11:42,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:11:42,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:11:42,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:11:42,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:11:42,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:11:42,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:11:42,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:11:42,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:11:42,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:11:42,520 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 [2020-09-25 01:11:42,569 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:11:42,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:11:42,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:11:42,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:11:42,573 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:11:42,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:11:42,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:11:42,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:11:42,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:11:42,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:11:42,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:11:42,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:11:42,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:11:42,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:11:42,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:11:42,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:11:42,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:11:42,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:11:42,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:11:42,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:11:42,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:11:42,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:11:42,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:11:42,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:11:42,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:11:42,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:11:42,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:11:42,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:11:42,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:11:42,580 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:11:43,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:11:43,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:11:43,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:11:43,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:11:43,051 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:11:43,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-09-25 01:11:43,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6d2f644b/9011fefec9794eec881765fe3c582810/FLAGe0af7bd0f [2020-09-25 01:11:43,634 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:11:43,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-09-25 01:11:43,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6d2f644b/9011fefec9794eec881765fe3c582810/FLAGe0af7bd0f [2020-09-25 01:11:43,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6d2f644b/9011fefec9794eec881765fe3c582810 [2020-09-25 01:11:43,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:11:43,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:11:43,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:11:43,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:11:43,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:11:43,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:11:43" (1/1) ... [2020-09-25 01:11:43,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:43, skipping insertion in model container [2020-09-25 01:11:43,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:11:43" (1/1) ... [2020-09-25 01:11:43,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:11:44,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:11:44,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:11:44,307 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:11:44,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:11:44,347 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:11:44,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44 WrapperNode [2020-09-25 01:11:44,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:11:44,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:11:44,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:11:44,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:11:44,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44" (1/1) ... [2020-09-25 01:11:44,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44" (1/1) ... [2020-09-25 01:11:44,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44" (1/1) ... [2020-09-25 01:11:44,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44" (1/1) ... [2020-09-25 01:11:44,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44" (1/1) ... [2020-09-25 01:11:44,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44" (1/1) ... [2020-09-25 01:11:44,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44" (1/1) ... [2020-09-25 01:11:44,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:11:44,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:11:44,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:11:44,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:11:44,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:11:44,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:11:44,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:11:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:11:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:11:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:11:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:11:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:11:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:11:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:11:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:11:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:11:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:11:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:11:44,824 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:11:44,824 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 01:11:44,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:11:44 BoogieIcfgContainer [2020-09-25 01:11:44,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:11:44,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:11:44,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:11:44,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:11:44,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:11:43" (1/3) ... [2020-09-25 01:11:44,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e887354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:11:44, skipping insertion in model container [2020-09-25 01:11:44,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:44" (2/3) ... [2020-09-25 01:11:44,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e887354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:11:44, skipping insertion in model container [2020-09-25 01:11:44,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:11:44" (3/3) ... [2020-09-25 01:11:44,846 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-09-25 01:11:44,863 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:11:44,875 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:11:44,901 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:11:44,935 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:11:44,935 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:11:44,936 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:11:44,936 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:11:44,936 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:11:44,937 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:11:44,937 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:11:44,937 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:11:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-25 01:11:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 01:11:44,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:44,975 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] [2020-09-25 01:11:44,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:44,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:44,982 INFO L82 PathProgramCache]: Analyzing trace with hash 2048298944, now seen corresponding path program 1 times [2020-09-25 01:11:44,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:44,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76959396] [2020-09-25 01:11:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:45,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:45,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:45,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 01:11:45,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 01:11:45,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:45,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:11:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 01:11:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 01:11:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:11:46,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:46,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:46,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:11:46,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:46,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:11:46,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:11:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:46,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76959396] [2020-09-25 01:11:46,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:11:46,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:11:46,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681350824] [2020-09-25 01:11:46,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:11:46,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:46,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:11:46,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:11:46,084 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 10 states. [2020-09-25 01:11:46,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:46,731 INFO L93 Difference]: Finished difference Result 109 states and 147 transitions. [2020-09-25 01:11:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:11:46,734 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-09-25 01:11:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:46,748 INFO L225 Difference]: With dead ends: 109 [2020-09-25 01:11:46,748 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 01:11:46,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 01:11:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 01:11:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 31. [2020-09-25 01:11:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 01:11:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-09-25 01:11:46,811 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2020-09-25 01:11:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:46,811 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-09-25 01:11:46,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:11:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-09-25 01:11:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 01:11:46,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:46,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:11:46,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:11:46,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:46,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:46,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1303654892, now seen corresponding path program 1 times [2020-09-25 01:11:46,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:46,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172537291] [2020-09-25 01:11:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:47,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:47,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 01:11:47,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-25 01:11:47,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 01:11:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 01:11:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 01:11:47,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:11:47,672 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 25 [2020-09-25 01:11:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:47,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:11:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:11:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:47,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172537291] [2020-09-25 01:11:47,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:11:47,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 01:11:47,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259559297] [2020-09-25 01:11:47,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 01:11:47,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:47,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 01:11:47,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:11:47,737 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 12 states. [2020-09-25 01:11:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:48,342 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2020-09-25 01:11:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:11:48,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-09-25 01:11:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:48,344 INFO L225 Difference]: With dead ends: 76 [2020-09-25 01:11:48,345 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 01:11:48,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-09-25 01:11:48,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 01:11:48,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 34. [2020-09-25 01:11:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 01:11:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-09-25 01:11:48,355 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-09-25 01:11:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:48,356 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-09-25 01:11:48,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 01:11:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-09-25 01:11:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 01:11:48,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:48,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:11:48,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:11:48,358 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:48,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:48,358 INFO L82 PathProgramCache]: Analyzing trace with hash -132325864, now seen corresponding path program 2 times [2020-09-25 01:11:48,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:48,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789865781] [2020-09-25 01:11:48,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:49,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:49,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 01:11:49,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:11:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-09-25 01:11:49,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:11:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 01:11:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:11:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:11:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:49,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:49,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:49,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:11:49,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:49,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:11:49,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:11:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:49,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789865781] [2020-09-25 01:11:49,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:11:49,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:11:49,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806539758] [2020-09-25 01:11:49,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:11:49,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:49,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:11:49,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:11:49,232 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2020-09-25 01:11:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:57,630 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-09-25 01:11:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:11:57,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-25 01:11:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:57,728 INFO L225 Difference]: With dead ends: 53 [2020-09-25 01:11:57,728 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 01:11:57,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:11:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 01:11:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-25 01:11:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 01:11:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-25 01:11:57,756 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 28 [2020-09-25 01:11:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:57,762 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-25 01:11:57,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:11:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-25 01:11:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 01:11:57,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:57,764 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, 1, 1] [2020-09-25 01:11:57,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:11:57,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:57,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1365663380, now seen corresponding path program 1 times [2020-09-25 01:11:57,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:57,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886606519] [2020-09-25 01:11:57,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:57,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:58,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 01:11:58,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:11:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-09-25 01:11:58,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:11:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:11:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 01:11:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:58,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:58,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:58,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:11:58,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:11:58,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:11:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:58,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886606519] [2020-09-25 01:11:58,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:11:58,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:11:58,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176295264] [2020-09-25 01:11:58,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:11:58,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:58,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:11:58,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:11:58,597 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-09-25 01:12:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:00,848 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-09-25 01:12:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:12:00,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 01:12:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:00,850 INFO L225 Difference]: With dead ends: 57 [2020-09-25 01:12:00,850 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 01:12:00,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:12:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 01:12:00,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-09-25 01:12:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 01:12:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-09-25 01:12:00,857 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 29 [2020-09-25 01:12:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:00,858 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-09-25 01:12:00,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:12:00,858 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-09-25 01:12:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 01:12:00,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:00,859 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, 1, 1, 1] [2020-09-25 01:12:00,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:12:00,860 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:00,860 INFO L82 PathProgramCache]: Analyzing trace with hash 85634078, now seen corresponding path program 1 times [2020-09-25 01:12:00,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:00,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471774065] [2020-09-25 01:12:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:01,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:01,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:01,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 01:12:01,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:12:01,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-09-25 01:12:01,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:01,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:12:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 01:12:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:12:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:05,956 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2020-09-25 01:12:08,410 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 35 DAG size of output: 13 [2020-09-25 01:12:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:08,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:08,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:12:08,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:08,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:12:08,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:08,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:08,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:08,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:08,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:12:08,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471774065] [2020-09-25 01:12:08,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:12:08,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:12:08,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49251253] [2020-09-25 01:12:08,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:12:08,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:08,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:12:08,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:12:08,432 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-09-25 01:12:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:14,802 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-09-25 01:12:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:12:14,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 01:12:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:14,804 INFO L225 Difference]: With dead ends: 61 [2020-09-25 01:12:14,804 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 01:12:14,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:12:14,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 01:12:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-25 01:12:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 01:12:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-25 01:12:14,820 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2020-09-25 01:12:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:14,821 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-25 01:12:14,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:12:14,821 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-25 01:12:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 01:12:14,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:14,822 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, 1, 1, 1] [2020-09-25 01:12:14,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:12:14,823 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:14,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:14,823 INFO L82 PathProgramCache]: Analyzing trace with hash -613358466, now seen corresponding path program 1 times [2020-09-25 01:12:14,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:14,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116330684] [2020-09-25 01:12:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:14,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:15,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:15,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 01:12:15,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-09-25 01:12:15,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 01:12:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 01:12:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 01:12:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:15,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:15,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:15,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:15,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:12:15,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:12:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 01:12:15,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116330684] [2020-09-25 01:12:15,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:12:15,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 01:12:15,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789995429] [2020-09-25 01:12:15,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 01:12:15,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:15,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 01:12:15,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:12:15,717 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 12 states. [2020-09-25 01:12:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:16,260 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 01:12:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 01:12:16,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-09-25 01:12:16,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:16,261 INFO L225 Difference]: With dead ends: 58 [2020-09-25 01:12:16,261 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:12:16,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-09-25 01:12:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:12:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:12:16,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:12:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:12:16,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-25 01:12:16,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:16,266 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:12:16,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 01:12:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:12:16,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:12:16,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:12:16,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:12:16,559 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-09-25 01:12:16,564 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:12:16,564 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-25 01:12:16,565 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:12:16,565 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:12:16,565 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 01:12:16,565 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 01:12:16,566 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:12:16,566 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:12:16,566 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:12:16,567 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 01:12:16,567 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 01:12:16,567 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:12:16,567 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 01:12:16,568 INFO L268 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-09-25 01:12:16,568 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 33) no Hoare annotation was computed. [2020-09-25 01:12:16,571 INFO L268 CegarLoopResult]: For program point L23(lines 23 28) no Hoare annotation was computed. [2020-09-25 01:12:16,571 INFO L268 CegarLoopResult]: For program point L25-2(lines 21 28) no Hoare annotation was computed. [2020-09-25 01:12:16,571 INFO L268 CegarLoopResult]: For program point L21(lines 21 28) no Hoare annotation was computed. [2020-09-25 01:12:16,571 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 01:12:16,572 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) [2020-09-25 01:12:16,572 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 01:12:16,573 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (or (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0)) (let ((.cse2 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse1 (+ main_~i~0 main_~k~0))) (and (<= 0 .cse1) (<= 0 .cse2) (<= main_~i~0 0) (<= .cse2 0) (= main_~l~0 0) (<= 0 main_~i~0) (<= .cse0 0) (<= .cse1 0) (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 (* 4294967296 (div main_~l~0 4294967296))) (+ (* 4294967296 (div .cse0 4294967296)) main_~l~0)))))) [2020-09-25 01:12:16,573 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 01:12:16,573 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 01:12:16,573 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 01:12:16,574 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 01:12:16,574 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 33) no Hoare annotation was computed. [2020-09-25 01:12:16,574 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 01:12:16,574 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 33) the Hoare annotation is: true [2020-09-25 01:12:16,575 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 01:12:16,575 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 01:12:16,576 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 01:12:16,576 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 01:12:16,576 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 01:12:16,576 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 01:12:16,576 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 01:12:16,577 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 01:12:16,577 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:12:16,577 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 01:12:16,577 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 01:12:16,578 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:12:16,578 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 01:12:16,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:12:16 BoogieIcfgContainer [2020-09-25 01:12:16,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:12:16,643 INFO L168 Benchmark]: Toolchain (without parser) took 32672.38 ms. Allocated memory was 141.0 MB in the beginning and 283.6 MB in the end (delta: 142.6 MB). Free memory was 103.1 MB in the beginning and 195.3 MB in the end (delta: -92.2 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:16,645 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:12:16,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.15 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:16,653 INFO L168 Benchmark]: Boogie Preprocessor took 125.81 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 182.7 MB in the end (delta: -90.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:16,655 INFO L168 Benchmark]: RCFGBuilder took 357.96 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 167.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:16,657 INFO L168 Benchmark]: TraceAbstraction took 31804.23 ms. Allocated memory was 203.9 MB in the beginning and 283.6 MB in the end (delta: 79.7 MB). Free memory was 167.2 MB in the beginning and 195.3 MB in the end (delta: -28.1 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:16,668 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.15 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.81 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 182.7 MB in the end (delta: -90.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.96 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 167.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31804.23 ms. Allocated memory was 203.9 MB in the beginning and 283.6 MB in the end (delta: 79.7 MB). Free memory was 167.2 MB in the beginning and 195.3 MB in the end (delta: -28.1 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: i + j + k + v4 <= l && l <= i + j + k + v4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 31.3s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 606 SDslu, 204 SDs, 0 SdLazy, 776 SolverSat, 117 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 75 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 14 PreInvPairs, 24 NumberOfFragments, 99 HoareAnnotationTreeSize, 14 FomulaSimplifications, 4751 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 37076 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 17/22 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...