/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:12:02,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:12:02,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:12:02,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:12:02,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:12:02,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:12:02,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:12:02,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:12:02,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:12:02,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:12:02,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:12:02,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:12:02,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:12:02,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:12:02,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:12:02,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:12:02,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:12:02,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:12:02,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:12:02,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:12:02,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:12:02,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:12:02,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:12:02,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:12:02,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:12:02,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:12:02,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:12:02,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:12:02,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:12:02,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:12:02,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:12:02,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:12:02,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:12:02,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:12:02,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:12:02,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:12:02,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:12:02,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:12:02,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:12:02,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:12:02,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:12:02,771 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 [2020-10-28 17:12:02,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:12:02,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:12:02,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:12:02,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:12:02,823 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:12:02,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:12:02,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:12:02,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:12:02,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:12:02,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:12:02,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:12:02,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:12:02,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:12:02,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:12:02,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:12:02,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:12:02,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:12:02,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:12:02,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:12:02,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:12:02,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:12:02,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:12:02,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:12:02,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:12:02,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:12:02,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:12:02,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:12:02,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:12:02,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:12:02,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:12:03,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:12:03,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:12:03,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:12:03,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:12:03,245 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:12:03,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-10-28 17:12:03,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9dcf5b1/99ce3cc6ea174cf28fcc8c81a01d1b2c/FLAGd460ea20c [2020-10-28 17:12:03,982 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:12:03,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-10-28 17:12:03,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9dcf5b1/99ce3cc6ea174cf28fcc8c81a01d1b2c/FLAGd460ea20c [2020-10-28 17:12:04,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9dcf5b1/99ce3cc6ea174cf28fcc8c81a01d1b2c [2020-10-28 17:12:04,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:12:04,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:12:04,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:12:04,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:12:04,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:12:04,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:12:04" (1/1) ... [2020-10-28 17:12:04,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a72641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04, skipping insertion in model container [2020-10-28 17:12:04,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:12:04" (1/1) ... [2020-10-28 17:12:04,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:12:04,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:12:04,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:12:04,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:12:04,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:12:04,655 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:12:04,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04 WrapperNode [2020-10-28 17:12:04,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:12:04,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:12:04,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:12:04,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:12:04,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04" (1/1) ... [2020-10-28 17:12:04,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04" (1/1) ... [2020-10-28 17:12:04,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04" (1/1) ... [2020-10-28 17:12:04,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04" (1/1) ... [2020-10-28 17:12:04,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04" (1/1) ... [2020-10-28 17:12:04,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04" (1/1) ... [2020-10-28 17:12:04,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04" (1/1) ... [2020-10-28 17:12:04,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:12:04,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:12:04,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:12:04,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:12:04,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04" (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 [2020-10-28 17:12:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:12:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:12:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:12:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:12:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:12:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:12:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:12:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:12:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:12:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:12:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:12:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:12:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:12:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:12:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:12:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:12:05,710 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:12:05,710 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-28 17:12:05,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:12:05 BoogieIcfgContainer [2020-10-28 17:12:05,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:12:05,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:12:05,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:12:05,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:12:05,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:12:04" (1/3) ... [2020-10-28 17:12:05,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39701986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:12:05, skipping insertion in model container [2020-10-28 17:12:05,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:04" (2/3) ... [2020-10-28 17:12:05,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39701986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:12:05, skipping insertion in model container [2020-10-28 17:12:05,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:12:05" (3/3) ... [2020-10-28 17:12:05,721 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-10-28 17:12:05,733 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:12:05,738 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:12:05,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:12:05,774 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:12:05,775 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:12:05,775 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:12:05,775 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:12:05,775 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:12:05,775 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:12:05,775 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:12:05,776 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:12:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-10-28 17:12:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 17:12:05,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:05,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:05,802 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:05,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:05,808 INFO L82 PathProgramCache]: Analyzing trace with hash 977275202, now seen corresponding path program 1 times [2020-10-28 17:12:05,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:05,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398113640] [2020-10-28 17:12:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:05,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:06,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:06,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:12:06,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 17:12:06,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:06,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:12:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:12:06,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:06,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:06,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:06,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:06,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:06,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:12:06,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:06,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:06,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:06,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398113640] [2020-10-28 17:12:06,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:06,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 17:12:06,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104673386] [2020-10-28 17:12:06,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:12:06,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:06,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:12:06,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:12:06,305 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-10-28 17:12:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:06,424 INFO L93 Difference]: Finished difference Result 141 states and 256 transitions. [2020-10-28 17:12:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:12:06,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-28 17:12:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:06,442 INFO L225 Difference]: With dead ends: 141 [2020-10-28 17:12:06,442 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 17:12:06,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:12:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 17:12:06,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-28 17:12:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 17:12:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 92 transitions. [2020-10-28 17:12:06,523 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 92 transitions. Word has length 14 [2020-10-28 17:12:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:06,524 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 92 transitions. [2020-10-28 17:12:06,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:12:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 92 transitions. [2020-10-28 17:12:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 17:12:06,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:06,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:06,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:12:06,529 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:06,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:06,531 INFO L82 PathProgramCache]: Analyzing trace with hash -441817252, now seen corresponding path program 1 times [2020-10-28 17:12:06,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:06,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077397590] [2020-10-28 17:12:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:06,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:06,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:06,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 17:12:06,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:06,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-28 17:12:06,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:06,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:12:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:12:06,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:12:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:06,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:06,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:06,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:12:07,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:07,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:07,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077397590] [2020-10-28 17:12:07,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:07,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:07,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778156769] [2020-10-28 17:12:07,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:07,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:07,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:07,018 INFO L87 Difference]: Start difference. First operand 62 states and 92 transitions. Second operand 4 states. [2020-10-28 17:12:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:07,509 INFO L93 Difference]: Finished difference Result 168 states and 259 transitions. [2020-10-28 17:12:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:07,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 17:12:07,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:07,514 INFO L225 Difference]: With dead ends: 168 [2020-10-28 17:12:07,516 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 17:12:07,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 17:12:07,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2020-10-28 17:12:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 17:12:07,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 156 transitions. [2020-10-28 17:12:07,557 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 156 transitions. Word has length 15 [2020-10-28 17:12:07,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:07,557 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 156 transitions. [2020-10-28 17:12:07,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 156 transitions. [2020-10-28 17:12:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 17:12:07,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:07,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:07,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:12:07,560 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:07,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:07,561 INFO L82 PathProgramCache]: Analyzing trace with hash -456687803, now seen corresponding path program 1 times [2020-10-28 17:12:07,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:07,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373339858] [2020-10-28 17:12:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:07,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:07,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:12:07,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:07,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 17:12:07,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:07,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:12:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:12:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:07,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:07,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:07,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:07,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:12:07,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:07,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:07,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:07,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:07,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373339858] [2020-10-28 17:12:07,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:07,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:07,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120105986] [2020-10-28 17:12:07,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:07,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:07,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:07,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:07,790 INFO L87 Difference]: Start difference. First operand 103 states and 156 transitions. Second operand 4 states. [2020-10-28 17:12:08,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:08,057 INFO L93 Difference]: Finished difference Result 212 states and 326 transitions. [2020-10-28 17:12:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:08,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-28 17:12:08,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:08,060 INFO L225 Difference]: With dead ends: 212 [2020-10-28 17:12:08,060 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 17:12:08,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 17:12:08,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2020-10-28 17:12:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 17:12:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 161 transitions. [2020-10-28 17:12:08,075 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 161 transitions. Word has length 16 [2020-10-28 17:12:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:08,075 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 161 transitions. [2020-10-28 17:12:08,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 161 transitions. [2020-10-28 17:12:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 17:12:08,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:08,077 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:08,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:12:08,077 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1484837250, now seen corresponding path program 1 times [2020-10-28 17:12:08,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:08,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636798198] [2020-10-28 17:12:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:08,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:08,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 17:12:08,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:12:08,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:08,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:12:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:12:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:08,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:08,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:08,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:08,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:08,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:08,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:08,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:08,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636798198] [2020-10-28 17:12:08,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:08,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:08,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122478121] [2020-10-28 17:12:08,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:08,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:08,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:08,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:08,251 INFO L87 Difference]: Start difference. First operand 108 states and 161 transitions. Second operand 4 states. [2020-10-28 17:12:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:08,361 INFO L93 Difference]: Finished difference Result 197 states and 296 transitions. [2020-10-28 17:12:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:08,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-28 17:12:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:08,363 INFO L225 Difference]: With dead ends: 197 [2020-10-28 17:12:08,363 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 17:12:08,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:08,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 17:12:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-28 17:12:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 17:12:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2020-10-28 17:12:08,375 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 21 [2020-10-28 17:12:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:08,376 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2020-10-28 17:12:08,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2020-10-28 17:12:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 17:12:08,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:08,377 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:08,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:12:08,377 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:08,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:08,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1356324910, now seen corresponding path program 1 times [2020-10-28 17:12:08,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:08,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816545703] [2020-10-28 17:12:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:08,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:08,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:12:08,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:08,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 17:12:08,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:08,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:12:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:12:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:08,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:08,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:08,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:08,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:12:08,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:08,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:08,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816545703] [2020-10-28 17:12:08,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:08,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:08,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128454064] [2020-10-28 17:12:08,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:08,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:08,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:08,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:08,562 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand 4 states. [2020-10-28 17:12:08,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:08,746 INFO L93 Difference]: Finished difference Result 188 states and 274 transitions. [2020-10-28 17:12:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:08,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 17:12:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:08,748 INFO L225 Difference]: With dead ends: 188 [2020-10-28 17:12:08,748 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 17:12:08,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 17:12:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-28 17:12:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 17:12:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 151 transitions. [2020-10-28 17:12:08,761 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 151 transitions. Word has length 26 [2020-10-28 17:12:08,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:08,762 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 151 transitions. [2020-10-28 17:12:08,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 151 transitions. [2020-10-28 17:12:08,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 17:12:08,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:08,764 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 17:12:08,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:12:08,764 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash -951573711, now seen corresponding path program 1 times [2020-10-28 17:12:08,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:08,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905007091] [2020-10-28 17:12:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:08,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:08,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:08,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:12:08,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:08,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 17:12:08,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:08,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:12:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:12:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:08,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:08,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:08,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:08,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:08,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:12:08,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:08,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:08,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:08,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:08,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:08,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:12:08,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905007091] [2020-10-28 17:12:08,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:08,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:08,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545521692] [2020-10-28 17:12:08,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:08,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:08,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:08,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:08,939 INFO L87 Difference]: Start difference. First operand 107 states and 151 transitions. Second operand 4 states. [2020-10-28 17:12:09,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:09,071 INFO L93 Difference]: Finished difference Result 175 states and 249 transitions. [2020-10-28 17:12:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:09,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-28 17:12:09,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:09,072 INFO L225 Difference]: With dead ends: 175 [2020-10-28 17:12:09,072 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 17:12:09,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 17:12:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-28 17:12:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 17:12:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 113 transitions. [2020-10-28 17:12:09,082 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 113 transitions. Word has length 37 [2020-10-28 17:12:09,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:09,083 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 113 transitions. [2020-10-28 17:12:09,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 113 transitions. [2020-10-28 17:12:09,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 17:12:09,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:09,084 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-10-28 17:12:09,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:12:09,085 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash 2067843122, now seen corresponding path program 1 times [2020-10-28 17:12:09,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:09,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916707685] [2020-10-28 17:12:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:09,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:09,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:12:09,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 17:12:09,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:09,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:12:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:12:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:12:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:09,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:09,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:09,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:09,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:09,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:12:09,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:09,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:09,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:09,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:09,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:09,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:12:09,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916707685] [2020-10-28 17:12:09,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:09,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 17:12:09,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742234208] [2020-10-28 17:12:09,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:12:09,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:09,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:12:09,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:09,336 INFO L87 Difference]: Start difference. First operand 83 states and 113 transitions. Second operand 5 states. [2020-10-28 17:12:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:09,777 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2020-10-28 17:12:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:12:09,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-28 17:12:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:09,779 INFO L225 Difference]: With dead ends: 86 [2020-10-28 17:12:09,779 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 17:12:09,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:12:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 17:12:09,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 17:12:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 17:12:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 17:12:09,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-10-28 17:12:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:09,781 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 17:12:09,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:12:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 17:12:09,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 17:12:09,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:12:09,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 17:12:10,094 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 18 [2020-10-28 17:12:10,295 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 18 [2020-10-28 17:12:10,298 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-28 17:12:10,299 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-28 17:12:10,299 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-28 17:12:10,299 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-28 17:12:10,299 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:12:10,300 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_close~0 |old(~m_close~0)|) (= |old(#valid)| |#valid|) (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~m_flush~0 |old(~m_flush~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-28 17:12:10,300 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:12:10,300 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:12:10,300 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 17:12:10,300 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 17:12:10,300 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:12:10,300 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 346) no Hoare annotation was computed. [2020-10-28 17:12:10,300 INFO L274 CegarLoopResult]: For program point L36(lines 36 51) no Hoare annotation was computed. [2020-10-28 17:12:10,300 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 15 346) no Hoare annotation was computed. [2020-10-28 17:12:10,301 INFO L274 CegarLoopResult]: For program point L38(lines 38 49) no Hoare annotation was computed. [2020-10-28 17:12:10,301 INFO L274 CegarLoopResult]: For program point L88(lines 88 103) no Hoare annotation was computed. [2020-10-28 17:12:10,301 INFO L274 CegarLoopResult]: For program point L55(lines 55 106) no Hoare annotation was computed. [2020-10-28 17:12:10,301 INFO L274 CegarLoopResult]: For program point L204(lines 204 219) no Hoare annotation was computed. [2020-10-28 17:12:10,301 INFO L274 CegarLoopResult]: For program point L72(lines 72 87) no Hoare annotation was computed. [2020-10-28 17:12:10,301 INFO L274 CegarLoopResult]: For program point L320(lines 320 335) no Hoare annotation was computed. [2020-10-28 17:12:10,301 INFO L274 CegarLoopResult]: For program point L188(lines 188 203) no Hoare annotation was computed. [2020-10-28 17:12:10,301 INFO L274 CegarLoopResult]: For program point L56(lines 56 71) no Hoare annotation was computed. [2020-10-28 17:12:10,302 INFO L270 CegarLoopResult]: At program point L337(lines 25 341) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0))) (and (<= 2 main_~q~0) (= main_~this_sink~0 0) (<= main_~q~0 2))) [2020-10-28 17:12:10,302 INFO L274 CegarLoopResult]: For program point L304(lines 304 319) no Hoare annotation was computed. [2020-10-28 17:12:10,302 INFO L274 CegarLoopResult]: For program point L172(lines 172 187) no Hoare annotation was computed. [2020-10-28 17:12:10,302 INFO L274 CegarLoopResult]: For program point L288(lines 288 303) no Hoare annotation was computed. [2020-10-28 17:12:10,302 INFO L274 CegarLoopResult]: For program point L156(lines 156 171) no Hoare annotation was computed. [2020-10-28 17:12:10,302 INFO L274 CegarLoopResult]: For program point L90(lines 90 101) no Hoare annotation was computed. [2020-10-28 17:12:10,302 INFO L274 CegarLoopResult]: For program point L272(lines 272 287) no Hoare annotation was computed. [2020-10-28 17:12:10,302 INFO L274 CegarLoopResult]: For program point L206(lines 206 217) no Hoare annotation was computed. [2020-10-28 17:12:10,303 INFO L274 CegarLoopResult]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-10-28 17:12:10,303 INFO L274 CegarLoopResult]: For program point L107(lines 107 222) no Hoare annotation was computed. [2020-10-28 17:12:10,303 INFO L274 CegarLoopResult]: For program point L74(lines 74 85) no Hoare annotation was computed. [2020-10-28 17:12:10,303 INFO L274 CegarLoopResult]: For program point L322(lines 322 333) no Hoare annotation was computed. [2020-10-28 17:12:10,303 INFO L274 CegarLoopResult]: For program point L256(lines 256 271) no Hoare annotation was computed. [2020-10-28 17:12:10,303 INFO L274 CegarLoopResult]: For program point L223(lines 223 338) no Hoare annotation was computed. [2020-10-28 17:12:10,303 INFO L274 CegarLoopResult]: For program point L190(lines 190 201) no Hoare annotation was computed. [2020-10-28 17:12:10,303 INFO L274 CegarLoopResult]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-10-28 17:12:10,303 INFO L274 CegarLoopResult]: For program point L58(lines 58 69) no Hoare annotation was computed. [2020-10-28 17:12:10,304 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 341) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0))) (and (<= 2 main_~q~0) (= main_~this_sink~0 0) (<= main_~q~0 2))) [2020-10-28 17:12:10,304 INFO L274 CegarLoopResult]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2020-10-28 17:12:10,304 INFO L274 CegarLoopResult]: For program point L306(lines 306 317) no Hoare annotation was computed. [2020-10-28 17:12:10,304 INFO L274 CegarLoopResult]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-10-28 17:12:10,304 INFO L274 CegarLoopResult]: For program point L174(lines 174 185) no Hoare annotation was computed. [2020-10-28 17:12:10,304 INFO L274 CegarLoopResult]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-10-28 17:12:10,304 INFO L274 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-10-28 17:12:10,304 INFO L274 CegarLoopResult]: For program point L290(lines 290 301) no Hoare annotation was computed. [2020-10-28 17:12:10,304 INFO L274 CegarLoopResult]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-10-28 17:12:10,305 INFO L274 CegarLoopResult]: For program point L158(lines 158 169) no Hoare annotation was computed. [2020-10-28 17:12:10,305 INFO L274 CegarLoopResult]: For program point L274(lines 274 285) no Hoare annotation was computed. [2020-10-28 17:12:10,305 INFO L274 CegarLoopResult]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-10-28 17:12:10,305 INFO L274 CegarLoopResult]: For program point L258(lines 258 269) no Hoare annotation was computed. [2020-10-28 17:12:10,305 INFO L274 CegarLoopResult]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-10-28 17:12:10,305 INFO L274 CegarLoopResult]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-10-28 17:12:10,305 INFO L274 CegarLoopResult]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-10-28 17:12:10,305 INFO L274 CegarLoopResult]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-10-28 17:12:10,305 INFO L274 CegarLoopResult]: For program point L94(lines 94 96) no Hoare annotation was computed. [2020-10-28 17:12:10,306 INFO L274 CegarLoopResult]: For program point L210(lines 210 212) no Hoare annotation was computed. [2020-10-28 17:12:10,306 INFO L274 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-10-28 17:12:10,306 INFO L274 CegarLoopResult]: For program point L326(lines 326 328) no Hoare annotation was computed. [2020-10-28 17:12:10,306 INFO L274 CegarLoopResult]: For program point L194(lines 194 196) no Hoare annotation was computed. [2020-10-28 17:12:10,306 INFO L274 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-10-28 17:12:10,306 INFO L274 CegarLoopResult]: For program point L310(lines 310 312) no Hoare annotation was computed. [2020-10-28 17:12:10,306 INFO L274 CegarLoopResult]: For program point L178(lines 178 180) no Hoare annotation was computed. [2020-10-28 17:12:10,306 INFO L270 CegarLoopResult]: At program point L327(lines 15 346) the Hoare annotation is: false [2020-10-28 17:12:10,307 INFO L274 CegarLoopResult]: For program point L294(lines 294 296) no Hoare annotation was computed. [2020-10-28 17:12:10,307 INFO L274 CegarLoopResult]: For program point L162(lines 162 164) no Hoare annotation was computed. [2020-10-28 17:12:10,307 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 15 346) the Hoare annotation is: true [2020-10-28 17:12:10,307 INFO L274 CegarLoopResult]: For program point L278(lines 278 280) no Hoare annotation was computed. [2020-10-28 17:12:10,307 INFO L274 CegarLoopResult]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-10-28 17:12:10,307 INFO L274 CegarLoopResult]: For program point L262(lines 262 264) no Hoare annotation was computed. [2020-10-28 17:12:10,307 INFO L274 CegarLoopResult]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-10-28 17:12:10,307 INFO L274 CegarLoopResult]: For program point L345(line 345) no Hoare annotation was computed. [2020-10-28 17:12:10,308 INFO L274 CegarLoopResult]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-10-28 17:12:10,308 INFO L274 CegarLoopResult]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-10-28 17:12:10,308 INFO L274 CegarLoopResult]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-10-28 17:12:10,308 INFO L274 CegarLoopResult]: For program point L35(lines 35 54) no Hoare annotation was computed. [2020-10-28 17:12:10,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:12:10 BoogieIcfgContainer [2020-10-28 17:12:10,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:12:10,329 INFO L168 Benchmark]: Toolchain (without parser) took 6026.21 ms. Allocated memory was 125.8 MB in the beginning and 185.6 MB in the end (delta: 59.8 MB). Free memory was 101.5 MB in the beginning and 142.4 MB in the end (delta: -40.9 MB). Peak memory consumption was 104.7 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:10,329 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:12:10,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.53 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 89.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:10,331 INFO L168 Benchmark]: Boogie Preprocessor took 58.76 ms. Allocated memory is still 125.8 MB. Free memory was 89.3 MB in the beginning and 87.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:10,332 INFO L168 Benchmark]: RCFGBuilder took 992.63 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 87.2 MB in the beginning and 120.0 MB in the end (delta: -32.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:10,333 INFO L168 Benchmark]: TraceAbstraction took 4612.86 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 119.9 MB in the beginning and 142.4 MB in the end (delta: -22.5 MB). Peak memory consumption was 98.1 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:10,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 347.53 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 89.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.76 ms. Allocated memory is still 125.8 MB. Free memory was 89.3 MB in the beginning and 87.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 992.63 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 87.2 MB in the beginning and 120.0 MB in the end (delta: -32.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4612.86 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 119.9 MB in the beginning and 142.4 MB in the end (delta: -22.5 MB). Peak memory consumption was 98.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 25]: Loop Invariant Derived loop invariant: (q <= 0 || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink))) || ((2 <= q && this_sink == 0) && q <= 2) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q <= 0 || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink))) || ((2 <= q && this_sink == 0) && q <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 560 SDtfs, 834 SDslu, 48 SDs, 0 SdLazy, 396 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=3, 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, 7 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 22 NumberOfFragments, 108 HoareAnnotationTreeSize, 14 FomulaSimplifications, 350 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 350 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 16782 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 25/25 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...