/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=DEEPEST --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_security.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:26:17,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:26:17,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:26:17,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:26:17,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:26:17,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:26:17,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:26:17,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:26:17,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:26:17,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:26:17,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:26:17,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:26:17,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:26:17,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:26:17,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:26:17,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:26:17,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:26:17,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:26:17,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:26:17,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:26:17,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:26:17,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:26:17,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:26:17,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:26:17,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:26:17,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:26:17,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:26:17,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:26:17,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:26:17,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:26:17,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:26:17,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:26:17,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:26:17,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:26:17,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:26:17,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:26:17,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:26:17,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:26:17,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:26:17,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:26:17,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:26:17,858 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 [2020-10-27 22:26:17,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:26:17,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:26:17,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:26:17,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:26:17,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:26:17,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:26:17,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:26:17,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:26:17,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:26:17,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:26:17,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:26:17,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:26:17,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:26:17,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:26:17,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:26:17,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:26:17,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:26:17,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:26:17,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:26:17,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:26:17,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:26:17,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:26:17,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:26:17,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:26:17,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:26:17,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:26:17,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:26:17,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:26:17,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:26:17,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:26:18,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:26:18,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:26:18,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:26:18,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:26:18,342 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:26:18,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-10-27 22:26:18,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb80d1959/364279359fed44ad894f7eedd01eb4a4/FLAG62df77cd1 [2020-10-27 22:26:19,143 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:26:19,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-10-27 22:26:19,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb80d1959/364279359fed44ad894f7eedd01eb4a4/FLAG62df77cd1 [2020-10-27 22:26:19,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb80d1959/364279359fed44ad894f7eedd01eb4a4 [2020-10-27 22:26:19,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:26:19,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:26:19,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:26:19,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:26:19,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:26:19,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:26:19" (1/1) ... [2020-10-27 22:26:19,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2802ec41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19, skipping insertion in model container [2020-10-27 22:26:19,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:26:19" (1/1) ... [2020-10-27 22:26:19,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:26:19,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:26:19,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:26:19,800 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:26:19,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:26:19,858 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:26:19,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19 WrapperNode [2020-10-27 22:26:19,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:26:19,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:26:19,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:26:19,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:26:19,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19" (1/1) ... [2020-10-27 22:26:19,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19" (1/1) ... [2020-10-27 22:26:19,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19" (1/1) ... [2020-10-27 22:26:19,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19" (1/1) ... [2020-10-27 22:26:19,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19" (1/1) ... [2020-10-27 22:26:19,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19" (1/1) ... [2020-10-27 22:26:19,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19" (1/1) ... [2020-10-27 22:26:19,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:26:19,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:26:19,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:26:19,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:26:19,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19" (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 [2020-10-27 22:26:20,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:26:20,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:26:20,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:26:20,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:26:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:26:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:26:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:26:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:26:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:26:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:26:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:26:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:26:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:26:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:26:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:26:20,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:26:20,589 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:26:20,589 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-27 22:26:20,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:26:20 BoogieIcfgContainer [2020-10-27 22:26:20,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:26:20,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:26:20,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:26:20,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:26:20,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:26:19" (1/3) ... [2020-10-27 22:26:20,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e381de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:26:20, skipping insertion in model container [2020-10-27 22:26:20,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:19" (2/3) ... [2020-10-27 22:26:20,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e381de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:26:20, skipping insertion in model container [2020-10-27 22:26:20,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:26:20" (3/3) ... [2020-10-27 22:26:20,601 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-10-27 22:26:20,614 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:26:20,620 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:26:20,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:26:20,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:26:20,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:26:20,683 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:26:20,683 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:26:20,683 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:26:20,683 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:26:20,683 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:26:20,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:26:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-27 22:26:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 22:26:20,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:20,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:26:20,719 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:20,726 INFO L82 PathProgramCache]: Analyzing trace with hash -122925734, now seen corresponding path program 1 times [2020-10-27 22:26:20,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:20,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060818267] [2020-10-27 22:26:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:20,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:21,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:21,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:26:21,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 22:26:21,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:21,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:21,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:26:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:21,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:26:21,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:21,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:21,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:21,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 22:26:21,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:21,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:26:21,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060818267] [2020-10-27 22:26:21,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:21,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 22:26:21,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743485921] [2020-10-27 22:26:21,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 22:26:21,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:21,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 22:26:21,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:26:21,349 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-10-27 22:26:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:21,456 INFO L93 Difference]: Finished difference Result 165 states and 304 transitions. [2020-10-27 22:26:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 22:26:21,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-27 22:26:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:21,468 INFO L225 Difference]: With dead ends: 165 [2020-10-27 22:26:21,468 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 22:26:21,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:26:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 22:26:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-27 22:26:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 22:26:21,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2020-10-27 22:26:21,526 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 14 [2020-10-27 22:26:21,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:21,527 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2020-10-27 22:26:21,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 22:26:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2020-10-27 22:26:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 22:26:21,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:21,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:26:21,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:26:21,530 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:21,531 INFO L82 PathProgramCache]: Analyzing trace with hash -188356260, now seen corresponding path program 1 times [2020-10-27 22:26:21,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:21,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501281037] [2020-10-27 22:26:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:21,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:21,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:21,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:21,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 22:26:21,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:26:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-27 22:26:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:26:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:26:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:26:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:21,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:21,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:21,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:21,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:26:21,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:26:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:26:22,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501281037] [2020-10-27 22:26:22,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:22,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:22,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699945463] [2020-10-27 22:26:22,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:22,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:22,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:22,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:22,005 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand 4 states. [2020-10-27 22:26:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:22,342 INFO L93 Difference]: Finished difference Result 155 states and 226 transitions. [2020-10-27 22:26:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:22,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-27 22:26:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:22,344 INFO L225 Difference]: With dead ends: 155 [2020-10-27 22:26:22,345 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 22:26:22,346 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 [2020-10-27 22:26:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 22:26:22,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-27 22:26:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 22:26:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 117 transitions. [2020-10-27 22:26:22,362 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 117 transitions. Word has length 15 [2020-10-27 22:26:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:22,363 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 117 transitions. [2020-10-27 22:26:22,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:22,363 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 117 transitions. [2020-10-27 22:26:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 22:26:22,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:22,364 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:26:22,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:26:22,365 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:22,366 INFO L82 PathProgramCache]: Analyzing trace with hash -812575593, now seen corresponding path program 1 times [2020-10-27 22:26:22,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:22,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922425977] [2020-10-27 22:26:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:22,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:22,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:26:22,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:26:22,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 22:26:22,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:26:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:26:22,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:22,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:22,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:22,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:26:22,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:26:22,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922425977] [2020-10-27 22:26:22,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:22,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:22,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671911152] [2020-10-27 22:26:22,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:22,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:22,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:22,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:22,547 INFO L87 Difference]: Start difference. First operand 82 states and 117 transitions. Second operand 4 states. [2020-10-27 22:26:22,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:22,680 INFO L93 Difference]: Finished difference Result 148 states and 215 transitions. [2020-10-27 22:26:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:22,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 22:26:22,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:22,682 INFO L225 Difference]: With dead ends: 148 [2020-10-27 22:26:22,682 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 22:26:22,683 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 [2020-10-27 22:26:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 22:26:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-27 22:26:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 22:26:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2020-10-27 22:26:22,694 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 20 [2020-10-27 22:26:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:22,694 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2020-10-27 22:26:22,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2020-10-27 22:26:22,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 22:26:22,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:22,696 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] [2020-10-27 22:26:22,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:26:22,697 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:22,697 INFO L82 PathProgramCache]: Analyzing trace with hash -473983135, now seen corresponding path program 1 times [2020-10-27 22:26:22,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:22,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472022338] [2020-10-27 22:26:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:22,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:22,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:22,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 22:26:22,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 22:26:22,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:26:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:26:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:22,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:22,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:22,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:22,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:26:22,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:26:22,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472022338] [2020-10-27 22:26:22,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:22,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:22,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208916764] [2020-10-27 22:26:22,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:22,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:22,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:22,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:22,835 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. Second operand 4 states. [2020-10-27 22:26:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:23,123 INFO L93 Difference]: Finished difference Result 193 states and 282 transitions. [2020-10-27 22:26:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:23,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 22:26:23,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:23,126 INFO L225 Difference]: With dead ends: 193 [2020-10-27 22:26:23,127 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 22:26:23,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:26:23,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 22:26:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 109. [2020-10-27 22:26:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 22:26:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 154 transitions. [2020-10-27 22:26:23,141 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 154 transitions. Word has length 23 [2020-10-27 22:26:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:23,142 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 154 transitions. [2020-10-27 22:26:23,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:23,142 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 154 transitions. [2020-10-27 22:26:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 22:26:23,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:23,143 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] [2020-10-27 22:26:23,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:26:23,144 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:23,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:23,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1275341081, now seen corresponding path program 1 times [2020-10-27 22:26:23,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:23,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921683515] [2020-10-27 22:26:23,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:23,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:23,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 22:26:23,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:26:23,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 22:26:23,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:26:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:26:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:23,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:23,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:23,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:23,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:23,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:26:23,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:26:23,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921683515] [2020-10-27 22:26:23,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:23,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:23,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174978652] [2020-10-27 22:26:23,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:23,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:23,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:23,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:23,345 INFO L87 Difference]: Start difference. First operand 109 states and 154 transitions. Second operand 4 states. [2020-10-27 22:26:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:23,559 INFO L93 Difference]: Finished difference Result 190 states and 272 transitions. [2020-10-27 22:26:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:23,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 22:26:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:23,561 INFO L225 Difference]: With dead ends: 190 [2020-10-27 22:26:23,561 INFO L226 Difference]: Without dead ends: 93 [2020-10-27 22:26:23,562 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 [2020-10-27 22:26:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-27 22:26:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-27 22:26:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 22:26:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 126 transitions. [2020-10-27 22:26:23,597 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 126 transitions. Word has length 24 [2020-10-27 22:26:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:23,597 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 126 transitions. [2020-10-27 22:26:23,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 126 transitions. [2020-10-27 22:26:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 22:26:23,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:23,599 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:26:23,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:26:23,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:23,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1079375766, now seen corresponding path program 1 times [2020-10-27 22:26:23,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:23,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351645537] [2020-10-27 22:26:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:23,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:23,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 22:26:23,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:23,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:26:23,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 22:26:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:26:23,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:23,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:23,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:23,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:23,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:26:23,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:26:23,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351645537] [2020-10-27 22:26:23,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:23,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:23,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316226049] [2020-10-27 22:26:23,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:23,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:23,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:23,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:23,712 INFO L87 Difference]: Start difference. First operand 92 states and 126 transitions. Second operand 4 states. [2020-10-27 22:26:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:23,868 INFO L93 Difference]: Finished difference Result 142 states and 200 transitions. [2020-10-27 22:26:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:23,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-27 22:26:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:23,870 INFO L225 Difference]: With dead ends: 142 [2020-10-27 22:26:23,870 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 22:26:23,871 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 [2020-10-27 22:26:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 22:26:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-27 22:26:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 22:26:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2020-10-27 22:26:23,879 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 30 [2020-10-27 22:26:23,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:23,880 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2020-10-27 22:26:23,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2020-10-27 22:26:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 22:26:23,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:23,882 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] [2020-10-27 22:26:23,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:26:23,882 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:23,883 INFO L82 PathProgramCache]: Analyzing trace with hash -311961296, now seen corresponding path program 1 times [2020-10-27 22:26:23,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:23,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791699971] [2020-10-27 22:26:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:23,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 22:26:23,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:26:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 22:26:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:26:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:23,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:23,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:23,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:23,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:26:23,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:26:24,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791699971] [2020-10-27 22:26:24,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:24,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:24,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625560961] [2020-10-27 22:26:24,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:24,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:24,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:24,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:24,006 INFO L87 Difference]: Start difference. First operand 74 states and 101 transitions. Second operand 4 states. [2020-10-27 22:26:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:24,295 INFO L93 Difference]: Finished difference Result 162 states and 234 transitions. [2020-10-27 22:26:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:24,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-27 22:26:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:24,298 INFO L225 Difference]: With dead ends: 162 [2020-10-27 22:26:24,298 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 22:26:24,299 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 [2020-10-27 22:26:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 22:26:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2020-10-27 22:26:24,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 22:26:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 143 transitions. [2020-10-27 22:26:24,309 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 143 transitions. Word has length 31 [2020-10-27 22:26:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:24,309 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 143 transitions. [2020-10-27 22:26:24,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:24,309 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 143 transitions. [2020-10-27 22:26:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 22:26:24,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:24,311 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] [2020-10-27 22:26:24,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:26:24,311 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:24,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:24,312 INFO L82 PathProgramCache]: Analyzing trace with hash 235222489, now seen corresponding path program 1 times [2020-10-27 22:26:24,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:24,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876119557] [2020-10-27 22:26:24,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:24,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:24,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:26:24,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 22:26:24,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:26:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:26:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:24,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:24,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:24,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:24,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:26:24,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:24,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:24,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:26:24,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876119557] [2020-10-27 22:26:24,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:24,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:24,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299241090] [2020-10-27 22:26:24,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:24,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:24,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:24,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:24,466 INFO L87 Difference]: Start difference. First operand 103 states and 143 transitions. Second operand 4 states. [2020-10-27 22:26:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:24,669 INFO L93 Difference]: Finished difference Result 171 states and 238 transitions. [2020-10-27 22:26:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:24,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-27 22:26:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:24,671 INFO L225 Difference]: With dead ends: 171 [2020-10-27 22:26:24,671 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 22:26:24,672 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 [2020-10-27 22:26:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 22:26:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-27 22:26:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 22:26:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2020-10-27 22:26:24,694 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 32 [2020-10-27 22:26:24,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:24,694 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2020-10-27 22:26:24,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2020-10-27 22:26:24,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 22:26:24,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:24,696 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] [2020-10-27 22:26:24,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:26:24,699 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:24,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:24,700 INFO L82 PathProgramCache]: Analyzing trace with hash 167233998, now seen corresponding path program 1 times [2020-10-27 22:26:24,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:24,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301688945] [2020-10-27 22:26:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:24,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:24,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:24,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:24,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:26:24,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:26:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 22:26:24,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 22:26:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:26:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:24,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:24,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:24,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:24,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:26:24,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:26:24,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301688945] [2020-10-27 22:26:24,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:24,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:24,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778319940] [2020-10-27 22:26:24,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:24,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:24,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:24,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:24,918 INFO L87 Difference]: Start difference. First operand 96 states and 125 transitions. Second operand 4 states. [2020-10-27 22:26:25,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:25,091 INFO L93 Difference]: Finished difference Result 146 states and 193 transitions. [2020-10-27 22:26:25,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:25,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-27 22:26:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:25,095 INFO L225 Difference]: With dead ends: 146 [2020-10-27 22:26:25,095 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 22:26:25,096 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 [2020-10-27 22:26:25,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 22:26:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-27 22:26:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 22:26:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-10-27 22:26:25,109 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 32 [2020-10-27 22:26:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:25,111 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-10-27 22:26:25,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-10-27 22:26:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 22:26:25,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:25,116 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] [2020-10-27 22:26:25,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:26:25,117 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:25,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash -49937851, now seen corresponding path program 1 times [2020-10-27 22:26:25,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:25,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222619161] [2020-10-27 22:26:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:25,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:25,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 22:26:25,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 22:26:25,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:26:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:26:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:25,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:25,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:25,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:26:25,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:26:25,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222619161] [2020-10-27 22:26:25,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:25,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:25,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082672205] [2020-10-27 22:26:25,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:25,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:25,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:25,319 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 4 states. [2020-10-27 22:26:25,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:25,524 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-10-27 22:26:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:25,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-27 22:26:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:25,525 INFO L225 Difference]: With dead ends: 81 [2020-10-27 22:26:25,526 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 22:26:25,526 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 [2020-10-27 22:26:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 22:26:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-27 22:26:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 22:26:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2020-10-27 22:26:25,534 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 33 [2020-10-27 22:26:25,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:25,534 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2020-10-27 22:26:25,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2020-10-27 22:26:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:26:25,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:25,535 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] [2020-10-27 22:26:25,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:26:25,535 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:25,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1193122916, now seen corresponding path program 1 times [2020-10-27 22:26:25,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:25,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649147069] [2020-10-27 22:26:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:25,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:25,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:26:25,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 22:26:25,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 22:26:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:26:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:25,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:25,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:25,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:25,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:25,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:26:25,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:26:25,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649147069] [2020-10-27 22:26:25,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:25,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:25,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526805130] [2020-10-27 22:26:25,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:25,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:25,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:25,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:25,653 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 4 states. [2020-10-27 22:26:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:25,826 INFO L93 Difference]: Finished difference Result 119 states and 154 transitions. [2020-10-27 22:26:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:25,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 22:26:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:25,828 INFO L225 Difference]: With dead ends: 119 [2020-10-27 22:26:25,828 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 22:26:25,828 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 [2020-10-27 22:26:25,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 22:26:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 22:26:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 22:26:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 22:26:25,829 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-10-27 22:26:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:25,829 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 22:26:25,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 22:26:25,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 22:26:25,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:26:25,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 22:26:26,209 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 20 [2020-10-27 22:26:26,473 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 20 [2020-10-27 22:26:26,481 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 22:26:26,482 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 22:26:26,482 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 22:26:26,482 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 22:26:26,482 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 22:26:26,482 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= |old(#length)| |#length|) (= ~m_sign~0 |old(~m_sign~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~m_verify~0 |old(~m_verify~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 22:26:26,483 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 22:26:26,483 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 22:26:26,483 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 22:26:26,483 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 22:26:26,483 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 22:26:26,483 INFO L274 CegarLoopResult]: For program point L250(lines 250 265) no Hoare annotation was computed. [2020-10-27 22:26:26,483 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 392) no Hoare annotation was computed. [2020-10-27 22:26:26,483 INFO L274 CegarLoopResult]: For program point L118(lines 118 133) no Hoare annotation was computed. [2020-10-27 22:26:26,483 INFO L274 CegarLoopResult]: For program point L52(lines 52 63) no Hoare annotation was computed. [2020-10-27 22:26:26,484 INFO L274 CegarLoopResult]: For program point L366(lines 366 381) no Hoare annotation was computed. [2020-10-27 22:26:26,484 INFO L274 CegarLoopResult]: For program point L234(lines 234 249) no Hoare annotation was computed. [2020-10-27 22:26:26,484 INFO L274 CegarLoopResult]: For program point L168(lines 168 179) no Hoare annotation was computed. [2020-10-27 22:26:26,484 INFO L274 CegarLoopResult]: For program point L102(lines 102 117) no Hoare annotation was computed. [2020-10-27 22:26:26,484 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-27 22:26:26,485 INFO L270 CegarLoopResult]: At program point L383(lines 24 387) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 0)) (and (<= 2 main_~q~0) .cse0 (<= main_~q~0 2)) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-10-27 22:26:26,485 INFO L274 CegarLoopResult]: For program point L350(lines 350 365) no Hoare annotation was computed. [2020-10-27 22:26:26,485 INFO L274 CegarLoopResult]: For program point L218(lines 218 233) no Hoare annotation was computed. [2020-10-27 22:26:26,485 INFO L274 CegarLoopResult]: For program point L185(lines 185 284) no Hoare annotation was computed. [2020-10-27 22:26:26,485 INFO L274 CegarLoopResult]: For program point L152(lines 152 163) no Hoare annotation was computed. [2020-10-27 22:26:26,485 INFO L274 CegarLoopResult]: For program point L334(lines 334 349) no Hoare annotation was computed. [2020-10-27 22:26:26,485 INFO L274 CegarLoopResult]: For program point L268(lines 268 279) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point L136(lines 136 147) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point L285(lines 285 384) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point L252(lines 252 263) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point L120(lines 120 131) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point L368(lines 368 379) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-10-27 22:26:26,486 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 15 392) no Hoare annotation was computed. [2020-10-27 22:26:26,487 INFO L274 CegarLoopResult]: For program point L236(lines 236 247) no Hoare annotation was computed. [2020-10-27 22:26:26,487 INFO L274 CegarLoopResult]: For program point L104(lines 104 115) no Hoare annotation was computed. [2020-10-27 22:26:26,487 INFO L274 CegarLoopResult]: For program point L352(lines 352 363) no Hoare annotation was computed. [2020-10-27 22:26:26,487 INFO L274 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-10-27 22:26:26,487 INFO L274 CegarLoopResult]: For program point L220(lines 220 231) no Hoare annotation was computed. [2020-10-27 22:26:26,487 INFO L274 CegarLoopResult]: For program point L88(lines 88 90) no Hoare annotation was computed. [2020-10-27 22:26:26,487 INFO L274 CegarLoopResult]: For program point L336(lines 336 347) no Hoare annotation was computed. [2020-10-27 22:26:26,487 INFO L274 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-10-27 22:26:26,488 INFO L274 CegarLoopResult]: For program point L72(lines 72 74) no Hoare annotation was computed. [2020-10-27 22:26:26,488 INFO L274 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-10-27 22:26:26,488 INFO L274 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-10-27 22:26:26,488 INFO L274 CegarLoopResult]: For program point L56(lines 56 58) no Hoare annotation was computed. [2020-10-27 22:26:26,488 INFO L274 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-10-27 22:26:26,488 INFO L274 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-10-27 22:26:26,488 INFO L274 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-10-27 22:26:26,488 INFO L274 CegarLoopResult]: For program point L156(lines 156 158) no Hoare annotation was computed. [2020-10-27 22:26:26,489 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 387) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 0)) (and (<= 2 main_~q~0) .cse0 (<= main_~q~0 2)) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-10-27 22:26:26,489 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2020-10-27 22:26:26,489 INFO L274 CegarLoopResult]: For program point L272(lines 272 274) no Hoare annotation was computed. [2020-10-27 22:26:26,489 INFO L274 CegarLoopResult]: For program point L140(lines 140 142) no Hoare annotation was computed. [2020-10-27 22:26:26,489 INFO L274 CegarLoopResult]: For program point L256(lines 256 258) no Hoare annotation was computed. [2020-10-27 22:26:26,489 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-27 22:26:26,489 INFO L274 CegarLoopResult]: For program point L372(lines 372 374) no Hoare annotation was computed. [2020-10-27 22:26:26,489 INFO L274 CegarLoopResult]: For program point L240(lines 240 242) no Hoare annotation was computed. [2020-10-27 22:26:26,489 INFO L274 CegarLoopResult]: For program point L108(lines 108 110) no Hoare annotation was computed. [2020-10-27 22:26:26,490 INFO L274 CegarLoopResult]: For program point L356(lines 356 358) no Hoare annotation was computed. [2020-10-27 22:26:26,490 INFO L274 CegarLoopResult]: For program point L224(lines 224 226) no Hoare annotation was computed. [2020-10-27 22:26:26,490 INFO L270 CegarLoopResult]: At program point L373(lines 15 392) the Hoare annotation is: false [2020-10-27 22:26:26,490 INFO L274 CegarLoopResult]: For program point L340(lines 340 342) no Hoare annotation was computed. [2020-10-27 22:26:26,490 INFO L274 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-10-27 22:26:26,490 INFO L274 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-10-27 22:26:26,490 INFO L274 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-10-27 22:26:26,490 INFO L274 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-10-27 22:26:26,490 INFO L274 CegarLoopResult]: For program point L391(line 391) no Hoare annotation was computed. [2020-10-27 22:26:26,491 INFO L274 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-10-27 22:26:26,491 INFO L274 CegarLoopResult]: For program point L29(lines 29 48) no Hoare annotation was computed. [2020-10-27 22:26:26,491 INFO L274 CegarLoopResult]: For program point L30(lines 30 45) no Hoare annotation was computed. [2020-10-27 22:26:26,491 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 15 392) the Hoare annotation is: true [2020-10-27 22:26:26,491 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-10-27 22:26:26,491 INFO L274 CegarLoopResult]: For program point L82(lines 82 97) no Hoare annotation was computed. [2020-10-27 22:26:26,491 INFO L274 CegarLoopResult]: For program point L49(lines 49 100) no Hoare annotation was computed. [2020-10-27 22:26:26,491 INFO L274 CegarLoopResult]: For program point L66(lines 66 81) no Hoare annotation was computed. [2020-10-27 22:26:26,491 INFO L274 CegarLoopResult]: For program point L50(lines 50 65) no Hoare annotation was computed. [2020-10-27 22:26:26,492 INFO L274 CegarLoopResult]: For program point L166(lines 166 181) no Hoare annotation was computed. [2020-10-27 22:26:26,492 INFO L274 CegarLoopResult]: For program point L150(lines 150 165) no Hoare annotation was computed. [2020-10-27 22:26:26,492 INFO L274 CegarLoopResult]: For program point L84(lines 84 95) no Hoare annotation was computed. [2020-10-27 22:26:26,492 INFO L274 CegarLoopResult]: For program point L266(lines 266 281) no Hoare annotation was computed. [2020-10-27 22:26:26,492 INFO L274 CegarLoopResult]: For program point L134(lines 134 149) no Hoare annotation was computed. [2020-10-27 22:26:26,492 INFO L274 CegarLoopResult]: For program point L101(lines 101 184) no Hoare annotation was computed. [2020-10-27 22:26:26,492 INFO L274 CegarLoopResult]: For program point L68(lines 68 79) no Hoare annotation was computed. [2020-10-27 22:26:26,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 10:26:26 BoogieIcfgContainer [2020-10-27 22:26:26,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 22:26:26,513 INFO L168 Benchmark]: Toolchain (without parser) took 7006.00 ms. Allocated memory was 151.0 MB in the beginning and 249.6 MB in the end (delta: 98.6 MB). Free memory was 126.3 MB in the beginning and 173.6 MB in the end (delta: -47.2 MB). Peak memory consumption was 137.9 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:26,514 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 151.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 435.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 22:26:26,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 114.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:26,516 INFO L168 Benchmark]: Boogie Preprocessor took 53.53 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:26,516 INFO L168 Benchmark]: RCFGBuilder took 676.64 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 120.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:26,517 INFO L168 Benchmark]: TraceAbstraction took 5917.99 ms. Allocated memory was 151.0 MB in the beginning and 249.6 MB in the end (delta: 98.6 MB). Free memory was 120.4 MB in the beginning and 173.6 MB in the end (delta: -53.2 MB). Peak memory consumption was 130.3 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:26,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 151.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 435.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 342.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 114.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.53 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 676.64 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 120.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5917.99 ms. Allocated memory was 151.0 MB in the beginning and 249.6 MB in the end (delta: 98.6 MB). Free memory was 120.4 MB in the beginning and 173.6 MB in the end (delta: -53.2 MB). Peak memory consumption was 130.3 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: 24]: Loop Invariant Derived loop invariant: (((this_state <= 0 && q == 0) || ((2 <= q && this_state <= 0) && q <= 2)) || ((3 <= q && 2 == this_state) && q <= 3)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((this_state <= 0 && q == 0) || ((2 <= q && this_state <= 0) && q <= 2)) || ((3 <= q && 2 == this_state) && q <= 3)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1005 SDtfs, 1463 SDslu, 73 SDs, 0 SdLazy, 653 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 18 PreInvPairs, 26 NumberOfFragments, 124 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 474 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 277 ConstructedInterpolants, 0 QuantifiedInterpolants, 24645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 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...