/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/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:09:28,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:09:28,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:09:28,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:09:28,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:09:28,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:09:28,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:09:28,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:09:28,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:09:28,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:09:28,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:09:28,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:09:28,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:09:28,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:09:28,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:09:28,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:09:28,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:09:28,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:09:28,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:09:28,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:09:28,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:09:28,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:09:28,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:09:28,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:09:28,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:09:28,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:09:28,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:09:28,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:09:28,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:09:28,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:09:28,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:09:28,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:09:28,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:09:28,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:09:28,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:09:28,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:09:28,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:09:28,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:09:28,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:09:28,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:09:28,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:09:28,532 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 01:09:28,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:09:28,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:09:28,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:09:28,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:09:28,568 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:09:28,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:09:28,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:09:28,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:09:28,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:09:28,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:09:28,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:09:28,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:09:28,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:09:28,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:09:28,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:09:28,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:09:28,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:09:28,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:09:28,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:09:28,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:09:28,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:09:28,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:09:28,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:09:28,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:09:28,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:09:28,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:09:28,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:09:28,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:09:28,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:09:28,574 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 01:09:29,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:09:29,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:09:29,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:09:29,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:09:29,111 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:09:29,112 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-09-25 01:09:29,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade8f99f3/07f9035477ba40aeaad0d356069826c3/FLAG6fa276605 [2020-09-25 01:09:29,801 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:09:29,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-1.c [2020-09-25 01:09:29,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade8f99f3/07f9035477ba40aeaad0d356069826c3/FLAG6fa276605 [2020-09-25 01:09:30,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade8f99f3/07f9035477ba40aeaad0d356069826c3 [2020-09-25 01:09:30,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:09:30,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:09:30,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:30,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:09:30,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:09:30,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:30" (1/1) ... [2020-09-25 01:09:30,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1058f97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30, skipping insertion in model container [2020-09-25 01:09:30,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:30" (1/1) ... [2020-09-25 01:09:30,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:09:30,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:09:30,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:30,483 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:09:30,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:30,535 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:09:30,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30 WrapperNode [2020-09-25 01:09:30,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:30,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:09:30,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:09:30,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:09:30,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30" (1/1) ... [2020-09-25 01:09:30,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30" (1/1) ... [2020-09-25 01:09:30,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30" (1/1) ... [2020-09-25 01:09:30,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30" (1/1) ... [2020-09-25 01:09:30,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30" (1/1) ... [2020-09-25 01:09:30,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30" (1/1) ... [2020-09-25 01:09:30,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30" (1/1) ... [2020-09-25 01:09:30,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:09:30,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:09:30,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:09:30,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:09:30,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30" (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 01:09:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:09:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:09:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:09:30,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:09:30,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:09:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:09:30,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:09:30,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:09:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:09:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:09:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:09:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:09:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:09:30,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:09:31,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:09:31,032 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 01:09:31,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:31 BoogieIcfgContainer [2020-09-25 01:09:31,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:09:31,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:09:31,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:09:31,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:09:31,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:09:30" (1/3) ... [2020-09-25 01:09:31,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444b5cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:31, skipping insertion in model container [2020-09-25 01:09:31,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:30" (2/3) ... [2020-09-25 01:09:31,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444b5cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:31, skipping insertion in model container [2020-09-25 01:09:31,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:31" (3/3) ... [2020-09-25 01:09:31,052 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-09-25 01:09:31,067 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:09:31,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:09:31,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:09:31,147 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:09:31,147 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:09:31,148 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:09:31,148 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:09:31,148 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:09:31,148 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:09:31,148 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:09:31,148 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:09:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-25 01:09:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 01:09:31,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:31,186 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] [2020-09-25 01:09:31,187 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:31,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:31,195 INFO L82 PathProgramCache]: Analyzing trace with hash 683487989, now seen corresponding path program 1 times [2020-09-25 01:09:31,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:31,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660954472] [2020-09-25 01:09:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:31,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:31,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 01:09:31,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-25 01:09:31,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:09:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 01:09:31,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 01:09:31,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 01:09:31,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:31,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:31,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:31,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:09:31,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:31,929 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 01:09:31,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660954472] [2020-09-25 01:09:31,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:09:31,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:09:31,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539238044] [2020-09-25 01:09:31,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:09:31,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:31,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:09:31,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:09:31,964 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 5 states. [2020-09-25 01:09:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:32,226 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-09-25 01:09:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:09:32,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-09-25 01:09:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:32,241 INFO L225 Difference]: With dead ends: 75 [2020-09-25 01:09:32,241 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 01:09:32,246 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 01:09:32,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 01:09:32,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-09-25 01:09:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 01:09:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-09-25 01:09:32,305 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 22 [2020-09-25 01:09:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:32,306 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-09-25 01:09:32,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:09:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-09-25 01:09:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 01:09:32,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:32,308 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:09:32,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:09:32,309 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:32,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:32,310 INFO L82 PathProgramCache]: Analyzing trace with hash 403649603, now seen corresponding path program 1 times [2020-09-25 01:09:32,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:32,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721383055] [2020-09-25 01:09:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:33,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:33,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 01:09:33,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:09:33,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-25 01:09:33,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 01:09:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:09:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 01:09:33,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:09:33,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:33,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:33,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:33,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:09:33,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:33,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:33,577 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 01:09:33,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721383055] [2020-09-25 01:09:33,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:33,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 01:09:33,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835685421] [2020-09-25 01:09:33,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:09:33,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:33,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:09:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:09:33,582 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 9 states. [2020-09-25 01:09:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:33,888 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-09-25 01:09:33,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:09:33,889 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 01:09:33,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:33,914 INFO L225 Difference]: With dead ends: 61 [2020-09-25 01:09:33,914 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 01:09:33,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-25 01:09:33,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 01:09:33,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-09-25 01:09:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 01:09:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-25 01:09:33,929 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 32 [2020-09-25 01:09:33,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:33,931 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-25 01:09:33,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:09:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-25 01:09:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 01:09:33,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:33,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:09:33,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:09:33,934 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:33,934 INFO L82 PathProgramCache]: Analyzing trace with hash -913737726, now seen corresponding path program 1 times [2020-09-25 01:09:33,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:33,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416258897] [2020-09-25 01:09:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:34,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:34,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 01:09:34,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:09:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-09-25 01:09:34,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 01:09:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:09:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 01:09:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:34,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:34,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:34,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:09:34,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:34,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:34,986 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 01:09:34,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416258897] [2020-09-25 01:09:34,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:34,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 01:09:34,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11345725] [2020-09-25 01:09:34,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:09:34,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:34,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:09:34,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:09:34,989 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 9 states. [2020-09-25 01:09:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:35,274 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-09-25 01:09:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:09:35,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 01:09:35,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:35,277 INFO L225 Difference]: With dead ends: 63 [2020-09-25 01:09:35,277 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 01:09:35,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-25 01:09:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 01:09:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-25 01:09:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 01:09:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-25 01:09:35,286 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 35 [2020-09-25 01:09:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:35,287 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-25 01:09:35,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:09:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-25 01:09:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 01:09:35,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:35,289 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:09:35,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:09:35,290 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:35,290 INFO L82 PathProgramCache]: Analyzing trace with hash -884839407, now seen corresponding path program 2 times [2020-09-25 01:09:35,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:35,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41142924] [2020-09-25 01:09:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:35,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:35,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:35,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:36,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:38,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:38,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 01:09:38,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 01:09:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3492 [2020-09-25 01:09:38,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 01:09:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:09:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 01:09:38,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:39,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:39,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:39,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:39,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:39,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:39,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:09:39,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:39,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:39,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:09:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:09:39,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41142924] [2020-09-25 01:09:39,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:39,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 01:09:39,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085303062] [2020-09-25 01:09:39,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 01:09:39,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:39,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 01:09:39,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:09:39,078 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 11 states. [2020-09-25 01:09:39,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:39,473 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2020-09-25 01:09:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 01:09:39,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-09-25 01:09:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:39,477 INFO L225 Difference]: With dead ends: 74 [2020-09-25 01:09:39,477 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 01:09:39,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-09-25 01:09:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 01:09:39,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-09-25 01:09:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 01:09:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 01:09:39,492 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 42 [2020-09-25 01:09:39,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:39,493 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 01:09:39,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 01:09:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 01:09:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 01:09:39,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:39,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:09:39,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:09:39,495 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:39,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2127857012, now seen corresponding path program 1 times [2020-09-25 01:09:39,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:39,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240379178] [2020-09-25 01:09:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:39,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:40,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:41,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:41,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 01:09:41,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:09:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2361 [2020-09-25 01:09:41,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 01:09:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:09:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:09:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:42,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:42,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:42,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:42,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:09:42,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:42,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240379178] [2020-09-25 01:09:42,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:42,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 01:09:42,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3857457] [2020-09-25 01:09:42,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 01:09:42,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:42,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 01:09:42,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:09:42,301 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 14 states. [2020-09-25 01:09:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:43,113 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-09-25 01:09:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 01:09:43,114 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-09-25 01:09:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:43,115 INFO L225 Difference]: With dead ends: 89 [2020-09-25 01:09:43,116 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 01:09:43,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2020-09-25 01:09:43,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 01:09:43,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2020-09-25 01:09:43,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 01:09:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-25 01:09:43,125 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 45 [2020-09-25 01:09:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:43,125 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-25 01:09:43,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 01:09:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-25 01:09:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 01:09:43,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:43,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:09:43,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:09:43,128 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1571179792, now seen corresponding path program 2 times [2020-09-25 01:09:43,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:43,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176367537] [2020-09-25 01:09:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:43,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:43,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:45,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:45,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 01:09:45,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 01:09:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2439 [2020-09-25 01:09:45,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 01:09:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:09:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:09:45,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:45,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:45,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:45,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:45,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:45,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:09:45,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 01:09:45,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176367537] [2020-09-25 01:09:45,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:45,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 01:09:45,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375328271] [2020-09-25 01:09:45,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 01:09:45,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:45,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 01:09:45,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:09:45,844 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 11 states. [2020-09-25 01:09:46,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:46,208 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-09-25 01:09:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 01:09:46,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-09-25 01:09:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:46,212 INFO L225 Difference]: With dead ends: 97 [2020-09-25 01:09:46,212 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 01:09:46,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-25 01:09:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 01:09:46,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 74. [2020-09-25 01:09:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 01:09:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-25 01:09:46,227 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 45 [2020-09-25 01:09:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:46,228 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-25 01:09:46,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 01:09:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-25 01:09:46,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 01:09:46,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:46,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:09:46,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:09:46,232 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:46,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash 332959765, now seen corresponding path program 2 times [2020-09-25 01:09:46,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:46,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065590349] [2020-09-25 01:09:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:46,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:49,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 01:09:49,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:09:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3475 [2020-09-25 01:09:49,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 01:09:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:09:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 01:09:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:49,953 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 9 [2020-09-25 01:09:50,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:50,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:50,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:50,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:50,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:09:50,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:50,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065590349] [2020-09-25 01:09:50,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:50,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 01:09:50,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867145315] [2020-09-25 01:09:50,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 01:09:50,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:50,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 01:09:50,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:09:50,264 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 14 states. [2020-09-25 01:09:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:50,839 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2020-09-25 01:09:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 01:09:50,840 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-09-25 01:09:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:50,841 INFO L225 Difference]: With dead ends: 102 [2020-09-25 01:09:50,842 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:09:50,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2020-09-25 01:09:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:09:50,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2020-09-25 01:09:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 01:09:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-25 01:09:50,851 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 48 [2020-09-25 01:09:50,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:50,851 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-25 01:09:50,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 01:09:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-25 01:09:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 01:09:50,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:50,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2020-09-25 01:09:50,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 01:09:50,853 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:50,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1028320358, now seen corresponding path program 3 times [2020-09-25 01:09:50,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:50,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705744938] [2020-09-25 01:09:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:54,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:55,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:55,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 01:09:55,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 01:09:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 01:09:55,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 01:09:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:09:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 01:09:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:56,165 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-09-25 01:09:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:56,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:56,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:09:56,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 01:09:56,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705744938] [2020-09-25 01:09:56,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:56,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 01:09:56,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167053803] [2020-09-25 01:09:56,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 01:09:56,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:56,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 01:09:56,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 01:09:56,411 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 15 states. [2020-09-25 01:09:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:57,248 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2020-09-25 01:09:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 01:09:57,248 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-09-25 01:09:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:57,249 INFO L225 Difference]: With dead ends: 117 [2020-09-25 01:09:57,250 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 01:09:57,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2020-09-25 01:09:57,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 01:09:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2020-09-25 01:09:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 01:09:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-09-25 01:09:57,258 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 55 [2020-09-25 01:09:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:57,258 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-09-25 01:09:57,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 01:09:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-09-25 01:09:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 01:09:57,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:57,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2020-09-25 01:09:57,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 01:09:57,260 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:57,261 INFO L82 PathProgramCache]: Analyzing trace with hash 471643138, now seen corresponding path program 4 times [2020-09-25 01:09:57,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:57,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501770132] [2020-09-25 01:09:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:58,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:59,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:00,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:00,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:02,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:02,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 01:10:02,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 01:10:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 01:10:02,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 01:10:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:10:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 01:10:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:03,178 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2020-09-25 01:10:03,345 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-09-25 01:10:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:03,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:10:03,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:10:03,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501770132] [2020-09-25 01:10:03,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:03,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 01:10:03,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400099037] [2020-09-25 01:10:03,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 01:10:03,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:03,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 01:10:03,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-09-25 01:10:03,810 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 21 states. [2020-09-25 01:10:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:05,324 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2020-09-25 01:10:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 01:10:05,325 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-09-25 01:10:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:05,326 INFO L225 Difference]: With dead ends: 138 [2020-09-25 01:10:05,327 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 01:10:05,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 01:10:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 01:10:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2020-09-25 01:10:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 01:10:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2020-09-25 01:10:05,336 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 55 [2020-09-25 01:10:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:05,337 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2020-09-25 01:10:05,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 01:10:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2020-09-25 01:10:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 01:10:05,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:05,338 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:05,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 01:10:05,339 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:05,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1752067043, now seen corresponding path program 5 times [2020-09-25 01:10:05,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:05,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182413631] [2020-09-25 01:10:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:05,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:06,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:06,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:10,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 01:10:10,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 01:10:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 01:10:10,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 01:10:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:10:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 01:10:10,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:10,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:10,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:10:10,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 01:10:10,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182413631] [2020-09-25 01:10:10,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:10,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 01:10:10,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497189037] [2020-09-25 01:10:10,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 01:10:10,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:10,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 01:10:10,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 01:10:10,995 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand 17 states. [2020-09-25 01:10:11,728 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-09-25 01:10:12,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:12,565 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2020-09-25 01:10:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 01:10:12,565 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-25 01:10:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:12,566 INFO L225 Difference]: With dead ends: 117 [2020-09-25 01:10:12,566 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:10:12,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=263, Invalid=1219, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 01:10:12,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:10:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:10:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:10:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:10:12,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-09-25 01:10:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:12,568 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:10:12,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 01:10:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:10:12,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:10:12,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 01:10:12,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:10:12,725 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-09-25 01:10:12,927 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 26 [2020-09-25 01:10:12,971 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,971 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,971 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,971 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 01:10:12,971 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,972 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,972 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 01:10:12,972 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 01:10:12,972 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,972 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-09-25 01:10:12,972 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 01:10:12,972 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 01:10:12,972 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 01:10:12,973 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 01:10:12,973 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 01:10:12,973 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 01:10:12,973 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2020-09-25 01:10:12,973 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 01:10:12,973 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 01:10:12,974 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 01:10:12,974 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 01:10:12,974 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 01:10:12,974 INFO L264 CegarLoopResult]: At program point L19-6(lines 19 24) the Hoare annotation is: (let ((.cse1 (<= 1 main_~SIZE~0)) (.cse0 (<= main_~SIZE~0 1)) (.cse2 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (or (and (<= (+ main_~j~0 1) main_~SIZE~0) .cse0 (< 0 (+ (div main_~j~0 4294967296) 1))) (and .cse1 (= main_~menor~0 .cse2) .cse0) (and .cse1 .cse0 (<= (+ main_~menor~0 1) .cse2)))) [2020-09-25 01:10:12,974 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 01:10:12,974 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-09-25 01:10:12,974 INFO L268 CegarLoopResult]: For program point L19-7(lines 19 24) no Hoare annotation was computed. [2020-09-25 01:10:12,975 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 01:10:12,975 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 01:10:12,975 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 01:10:12,975 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= 1 main_~SIZE~0) (<= main_~menor~0 |main_#t~mem5|) (<= main_~SIZE~0 1) (let ((.cse0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (or (= main_~menor~0 .cse0) (<= (+ main_~menor~0 1) .cse0)))) [2020-09-25 01:10:12,975 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 01:10:12,975 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 01:10:12,976 INFO L268 CegarLoopResult]: For program point L22-1(lines 22 23) no Hoare annotation was computed. [2020-09-25 01:10:12,976 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 01:10:12,976 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-25 01:10:12,976 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 01:10:12,976 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 01:10:12,976 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 01:10:12,976 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 01:10:12,976 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 01:10:12,977 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 01:10:12,977 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 01:10:12,977 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 01:10:12,977 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 01:10:12,977 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 01:10:12,977 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 01:10:12,994 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 01:10:12,996 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 01:10:13,004 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 01:10:13,005 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 01:10:13,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:10:13 BoogieIcfgContainer [2020-09-25 01:10:13,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:10:13,031 INFO L168 Benchmark]: Toolchain (without parser) took 42868.69 ms. Allocated memory was 140.0 MB in the beginning and 445.6 MB in the end (delta: 305.7 MB). Free memory was 103.8 MB in the beginning and 92.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 317.3 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:13,031 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:10:13,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.85 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:13,033 INFO L168 Benchmark]: Boogie Preprocessor took 128.89 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:13,034 INFO L168 Benchmark]: RCFGBuilder took 373.30 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 163.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:13,038 INFO L168 Benchmark]: TraceAbstraction took 41983.64 ms. Allocated memory was 202.4 MB in the beginning and 445.6 MB in the end (delta: 243.3 MB). Free memory was 163.9 MB in the beginning and 92.1 MB in the end (delta: 71.8 MB). Peak memory consumption was 315.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:13,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 372.85 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.89 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 373.30 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 163.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41983.64 ms. Allocated memory was 202.4 MB in the beginning and 445.6 MB in the end (delta: 243.3 MB). Free memory was 163.9 MB in the beginning and 92.1 MB in the end (delta: 71.8 MB). Peak memory consumption was 315.1 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2020-09-25 01:10:13,061 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 01:10:13,061 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 01:10:13,065 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 01:10:13,065 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((j + 1 <= SIZE && SIZE <= 1) && 0 < j / 4294967296 + 1) || ((1 <= SIZE && menor == unknown-#memory_int-unknown[array][array]) && SIZE <= 1)) || ((1 <= SIZE && SIZE <= 1) && menor + 1 <= unknown-#memory_int-unknown[array][array]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 41.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 305 SDtfs, 596 SDslu, 1636 SDs, 0 SdLazy, 1987 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=9, 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, 10 MinimizatonAttempts, 139 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 90 HoareAnnotationTreeSize, 16 FomulaSimplifications, 1544 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1320 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 33.6s InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 427 ConstructedInterpolants, 0 QuantifiedInterpolants, 226056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 25/147 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...