/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:12:12,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:12:12,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:12:12,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:12:12,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:12:12,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:12:13,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:12:13,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:12:13,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:12:13,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:12:13,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:12:13,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:12:13,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:12:13,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:12:13,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:12:13,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:12:13,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:12:13,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:12:13,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:12:13,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:12:13,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:12:13,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:12:13,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:12:13,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:12:13,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:12:13,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:12:13,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:12:13,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:12:13,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:12:13,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:12:13,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:12:13,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:12:13,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:12:13,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:12:13,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:12:13,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:12:13,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:12:13,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:12:13,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:12:13,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:12:13,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:12:13,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:12:13,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:12:13,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:12:13,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:12:13,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:12:13,092 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:12:13,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:12:13,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:12:13,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:12:13,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:12:13,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:12:13,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:12:13,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:12:13,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:12:13,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:12:13,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:12:13,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:12:13,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:12:13,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:12:13,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:12:13,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:12:13,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:12:13,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:12:13,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:12:13,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:12:13,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:12:13,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:12:13,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:12:13,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:12:13,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:12:13,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:12:13,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:12:13,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:12:13,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:12:13,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:12:13,573 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:12:13,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-10-28 17:12:13,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe815066d/0c8a3ba7c790460091b170ce179f52de/FLAG22256cbf9 [2020-10-28 17:12:14,281 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:12:14,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-10-28 17:12:14,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe815066d/0c8a3ba7c790460091b170ce179f52de/FLAG22256cbf9 [2020-10-28 17:12:14,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe815066d/0c8a3ba7c790460091b170ce179f52de [2020-10-28 17:12:14,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:12:14,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:12:14,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:12:14,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:12:14,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:12:14,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:12:14" (1/1) ... [2020-10-28 17:12:14,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32392456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14, skipping insertion in model container [2020-10-28 17:12:14,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:12:14" (1/1) ... [2020-10-28 17:12:14,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:12:14,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:12:14,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:12:14,906 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:12:14,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:12:14,971 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:12:14,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14 WrapperNode [2020-10-28 17:12:14,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:12:14,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:12:14,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:12:14,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:12:14,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14" (1/1) ... [2020-10-28 17:12:14,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14" (1/1) ... [2020-10-28 17:12:14,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14" (1/1) ... [2020-10-28 17:12:15,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14" (1/1) ... [2020-10-28 17:12:15,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14" (1/1) ... [2020-10-28 17:12:15,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14" (1/1) ... [2020-10-28 17:12:15,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14" (1/1) ... [2020-10-28 17:12:15,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:12:15,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:12:15,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:12:15,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:12:15,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:12:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:12:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:12:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:12:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:12:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:12:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:12:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:12:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:12:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:12:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:12:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:12:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:12:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:12:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:12:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:12:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:12:15,838 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:12:15,838 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-28 17:12:15,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:12:15 BoogieIcfgContainer [2020-10-28 17:12:15,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:12:15,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:12:15,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:12:15,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:12:15,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:12:14" (1/3) ... [2020-10-28 17:12:15,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2bf076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:12:15, skipping insertion in model container [2020-10-28 17:12:15,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:12:14" (2/3) ... [2020-10-28 17:12:15,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2bf076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:12:15, skipping insertion in model container [2020-10-28 17:12:15,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:12:15" (3/3) ... [2020-10-28 17:12:15,854 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-10-28 17:12:15,866 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:12:15,872 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:12:15,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:12:15,930 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:12:15,930 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:12:15,930 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:12:15,930 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:12:15,930 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:12:15,931 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:12:15,931 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:12:15,931 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:12:15,960 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-28 17:12:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 17:12:15,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:15,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:15,970 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:15,979 INFO L82 PathProgramCache]: Analyzing trace with hash -122925734, now seen corresponding path program 1 times [2020-10-28 17:12:15,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:15,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285347159] [2020-10-28 17:12:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:16,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:16,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:12:16,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:16,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 17:12:16,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:16,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:12:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:16,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:12:16,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:16,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:16,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:16,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:16,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:16,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:12:16,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:16,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 17:12:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:16,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285347159] [2020-10-28 17:12:16,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:16,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 17:12:16,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092139312] [2020-10-28 17:12:16,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:12:16,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:16,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:12:16,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:12:16,615 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-10-28 17:12:16,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:16,729 INFO L93 Difference]: Finished difference Result 165 states and 304 transitions. [2020-10-28 17:12:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:12:16,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-28 17:12:16,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:16,742 INFO L225 Difference]: With dead ends: 165 [2020-10-28 17:12:16,742 INFO L226 Difference]: Without dead ends: 79 [2020-10-28 17:12:16,746 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 [2020-10-28 17:12:16,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-28 17:12:16,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-28 17:12:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 17:12:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2020-10-28 17:12:16,796 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 14 [2020-10-28 17:12:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:16,797 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2020-10-28 17:12:16,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:12:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2020-10-28 17:12:16,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 17:12:16,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:16,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:16,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:12:16,799 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:16,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:16,800 INFO L82 PathProgramCache]: Analyzing trace with hash -188356260, now seen corresponding path program 1 times [2020-10-28 17:12:16,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:16,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990105028] [2020-10-28 17:12:16,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:16,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:17,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:17,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 17:12:17,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:12:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 17:12:17,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:17,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:12:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:12:17,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:17,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:17,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:17,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:17,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:17,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:12:17,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:17,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:17,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990105028] [2020-10-28 17:12:17,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:17,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:17,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677522042] [2020-10-28 17:12:17,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:17,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:17,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:17,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:17,140 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand 4 states. [2020-10-28 17:12:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:17,589 INFO L93 Difference]: Finished difference Result 223 states and 329 transitions. [2020-10-28 17:12:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:17,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 17:12:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:17,593 INFO L225 Difference]: With dead ends: 223 [2020-10-28 17:12:17,593 INFO L226 Difference]: Without dead ends: 134 [2020-10-28 17:12:17,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:17,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-28 17:12:17,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 119. [2020-10-28 17:12:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-28 17:12:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 172 transitions. [2020-10-28 17:12:17,617 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 172 transitions. Word has length 15 [2020-10-28 17:12:17,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:17,618 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 172 transitions. [2020-10-28 17:12:17,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:17,618 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 172 transitions. [2020-10-28 17:12:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 17:12:17,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:17,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:17,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:12:17,622 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:17,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:17,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1837568862, now seen corresponding path program 1 times [2020-10-28 17:12:17,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:17,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779501422] [2020-10-28 17:12:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:17,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:17,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:17,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:12:17,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:17,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 17:12:17,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:17,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:12:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:17,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:17,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:17,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:17,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:17,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:12:17,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:17,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:17,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:17,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:17,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:17,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:17,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779501422] [2020-10-28 17:12:17,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:17,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:17,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986539393] [2020-10-28 17:12:17,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:17,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:17,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:17,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:17,840 INFO L87 Difference]: Start difference. First operand 119 states and 172 transitions. Second operand 4 states. [2020-10-28 17:12:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:18,154 INFO L93 Difference]: Finished difference Result 246 states and 362 transitions. [2020-10-28 17:12:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:18,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 17:12:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:18,157 INFO L225 Difference]: With dead ends: 246 [2020-10-28 17:12:18,157 INFO L226 Difference]: Without dead ends: 133 [2020-10-28 17:12:18,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:18,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-28 17:12:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2020-10-28 17:12:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 17:12:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 178 transitions. [2020-10-28 17:12:18,173 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 178 transitions. Word has length 19 [2020-10-28 17:12:18,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:18,173 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 178 transitions. [2020-10-28 17:12:18,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 178 transitions. [2020-10-28 17:12:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 17:12:18,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:18,175 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] [2020-10-28 17:12:18,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:12:18,175 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:18,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:18,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1275341081, now seen corresponding path program 1 times [2020-10-28 17:12:18,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:18,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137827828] [2020-10-28 17:12:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:18,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:18,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:12:18,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 17:12:18,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:18,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:12:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:12:18,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:18,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:18,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:12:18,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:18,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:12:18,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137827828] [2020-10-28 17:12:18,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:18,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:18,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174830705] [2020-10-28 17:12:18,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:18,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:18,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:18,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:18,427 INFO L87 Difference]: Start difference. First operand 125 states and 178 transitions. Second operand 4 states. [2020-10-28 17:12:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:18,662 INFO L93 Difference]: Finished difference Result 228 states and 329 transitions. [2020-10-28 17:12:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:18,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 17:12:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:18,664 INFO L225 Difference]: With dead ends: 228 [2020-10-28 17:12:18,664 INFO L226 Difference]: Without dead ends: 109 [2020-10-28 17:12:18,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:18,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-28 17:12:18,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-10-28 17:12:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 17:12:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 152 transitions. [2020-10-28 17:12:18,676 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 152 transitions. Word has length 24 [2020-10-28 17:12:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:18,677 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 152 transitions. [2020-10-28 17:12:18,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 152 transitions. [2020-10-28 17:12:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 17:12:18,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:18,678 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:12:18,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:12:18,679 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:18,679 INFO L82 PathProgramCache]: Analyzing trace with hash -645502930, now seen corresponding path program 1 times [2020-10-28 17:12:18,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:18,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585399620] [2020-10-28 17:12:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:18,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:18,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 17:12:18,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:18,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:12:18,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:18,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:12:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:12:18,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:18,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:18,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:18,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:18,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:18,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:12:18,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:18,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:18,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:12:18,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585399620] [2020-10-28 17:12:18,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:18,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:18,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198632063] [2020-10-28 17:12:18,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:18,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:18,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:18,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:18,810 INFO L87 Difference]: Start difference. First operand 108 states and 152 transitions. Second operand 4 states. [2020-10-28 17:12:19,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:19,009 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2020-10-28 17:12:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:19,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-28 17:12:19,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:19,011 INFO L225 Difference]: With dead ends: 183 [2020-10-28 17:12:19,011 INFO L226 Difference]: Without dead ends: 81 [2020-10-28 17:12:19,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-28 17:12:19,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-28 17:12:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 17:12:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 111 transitions. [2020-10-28 17:12:19,028 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 111 transitions. Word has length 27 [2020-10-28 17:12:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:19,029 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 111 transitions. [2020-10-28 17:12:19,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:19,034 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 111 transitions. [2020-10-28 17:12:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 17:12:19,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:19,037 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] [2020-10-28 17:12:19,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:12:19,038 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:19,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:19,039 INFO L82 PathProgramCache]: Analyzing trace with hash -311961296, now seen corresponding path program 1 times [2020-10-28 17:12:19,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:19,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126565517] [2020-10-28 17:12:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:19,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:19,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 17:12:19,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 17:12:19,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:19,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:12:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:12:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:19,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:19,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:19,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:19,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:19,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:19,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:12:19,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126565517] [2020-10-28 17:12:19,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:19,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:19,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010918169] [2020-10-28 17:12:19,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:19,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:19,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:19,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:19,186 INFO L87 Difference]: Start difference. First operand 81 states and 111 transitions. Second operand 4 states. [2020-10-28 17:12:19,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:19,447 INFO L93 Difference]: Finished difference Result 169 states and 244 transitions. [2020-10-28 17:12:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:19,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-28 17:12:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:19,449 INFO L225 Difference]: With dead ends: 169 [2020-10-28 17:12:19,449 INFO L226 Difference]: Without dead ends: 121 [2020-10-28 17:12:19,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-28 17:12:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 110. [2020-10-28 17:12:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-28 17:12:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 153 transitions. [2020-10-28 17:12:19,459 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 153 transitions. Word has length 31 [2020-10-28 17:12:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:19,459 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 153 transitions. [2020-10-28 17:12:19,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 153 transitions. [2020-10-28 17:12:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 17:12:19,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:19,461 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] [2020-10-28 17:12:19,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:12:19,461 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash 235222489, now seen corresponding path program 1 times [2020-10-28 17:12:19,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:19,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44530218] [2020-10-28 17:12:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:19,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:19,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:19,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:12:19,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 17:12:19,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:19,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:12:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:12:19,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:19,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:19,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:19,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:19,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:19,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:19,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:19,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:19,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:12:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:12:19,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44530218] [2020-10-28 17:12:19,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:19,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:19,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234085927] [2020-10-28 17:12:19,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:19,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:19,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:19,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:19,597 INFO L87 Difference]: Start difference. First operand 110 states and 153 transitions. Second operand 4 states. [2020-10-28 17:12:19,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:19,779 INFO L93 Difference]: Finished difference Result 178 states and 248 transitions. [2020-10-28 17:12:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:19,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-28 17:12:19,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:19,781 INFO L225 Difference]: With dead ends: 178 [2020-10-28 17:12:19,781 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 17:12:19,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:19,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 17:12:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-28 17:12:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 17:12:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2020-10-28 17:12:19,790 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 32 [2020-10-28 17:12:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:19,790 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2020-10-28 17:12:19,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2020-10-28 17:12:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 17:12:19,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:19,791 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] [2020-10-28 17:12:19,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:12:19,792 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:19,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:19,792 INFO L82 PathProgramCache]: Analyzing trace with hash 167233998, now seen corresponding path program 1 times [2020-10-28 17:12:19,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:19,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480924044] [2020-10-28 17:12:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:19,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:12:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:12:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 17:12:19,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:19,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:12:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:12:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:19,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:19,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:19,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:19,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:19,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:12:19,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:19,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:12:19,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480924044] [2020-10-28 17:12:19,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:19,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:19,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231351657] [2020-10-28 17:12:19,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:19,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:19,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:19,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:19,940 INFO L87 Difference]: Start difference. First operand 103 states and 135 transitions. Second operand 4 states. [2020-10-28 17:12:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:20,128 INFO L93 Difference]: Finished difference Result 153 states and 203 transitions. [2020-10-28 17:12:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:20,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-28 17:12:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:20,129 INFO L225 Difference]: With dead ends: 153 [2020-10-28 17:12:20,129 INFO L226 Difference]: Without dead ends: 85 [2020-10-28 17:12:20,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-28 17:12:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-28 17:12:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 17:12:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-10-28 17:12:20,137 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 32 [2020-10-28 17:12:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:20,138 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-10-28 17:12:20,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-10-28 17:12:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 17:12:20,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:20,139 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] [2020-10-28 17:12:20,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:12:20,139 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:20,140 INFO L82 PathProgramCache]: Analyzing trace with hash -49937851, now seen corresponding path program 1 times [2020-10-28 17:12:20,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:20,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988655006] [2020-10-28 17:12:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:20,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:20,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 17:12:20,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 17:12:20,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:20,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:12:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:12:20,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:20,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:20,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:20,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:20,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:20,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:12:20,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:20,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:20,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:12:20,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988655006] [2020-10-28 17:12:20,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:20,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:20,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542562689] [2020-10-28 17:12:20,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:20,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:20,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:20,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:20,324 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 4 states. [2020-10-28 17:12:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:20,529 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2020-10-28 17:12:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:20,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-28 17:12:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:20,530 INFO L225 Difference]: With dead ends: 88 [2020-10-28 17:12:20,530 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 17:12:20,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 17:12:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-28 17:12:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 17:12:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2020-10-28 17:12:20,543 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 33 [2020-10-28 17:12:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:20,544 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2020-10-28 17:12:20,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2020-10-28 17:12:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:12:20,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:12:20,547 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] [2020-10-28 17:12:20,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:12:20,547 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:12:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:12:20,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1193122916, now seen corresponding path program 1 times [2020-10-28 17:12:20,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:12:20,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350409744] [2020-10-28 17:12:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:12:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:20,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:20,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:12:20,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:20,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 17:12:20,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:20,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:12:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:12:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:12:20,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:12:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:12:20,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:12:20,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:12:20,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:12:20,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:12:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:12:20,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:12:20,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:12:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:12:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:12:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:12:20,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:12:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 17:12:20,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350409744] [2020-10-28 17:12:20,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:12:20,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:12:20,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619817115] [2020-10-28 17:12:20,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:12:20,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:12:20,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:12:20,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:12:20,754 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand 4 states. [2020-10-28 17:12:20,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:12:20,930 INFO L93 Difference]: Finished difference Result 126 states and 164 transitions. [2020-10-28 17:12:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:12:20,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 17:12:20,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:12:20,931 INFO L225 Difference]: With dead ends: 126 [2020-10-28 17:12:20,931 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 17:12:20,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:12:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 17:12:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 17:12:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 17:12:20,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 17:12:20,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-10-28 17:12:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:12:20,934 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 17:12:20,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:12:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 17:12:20,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 17:12:20,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:12:20,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 17:12:21,262 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 18 [2020-10-28 17:12:21,501 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 18 [2020-10-28 17:12:21,508 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-28 17:12:21,508 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-28 17:12:21,509 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-28 17:12:21,509 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-28 17:12:21,509 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:12:21,509 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)|)) [2020-10-28 17:12:21,509 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:12:21,509 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 17:12:21,509 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 17:12:21,509 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point L250(lines 250 265) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 392) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point L118(lines 118 133) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point L52(lines 52 63) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point L366(lines 366 381) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point L234(lines 234 249) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point L168(lines 168 179) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point L102(lines 102 117) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-28 17:12:21,510 INFO L270 CegarLoopResult]: At program point L383(lines 24 387) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L350(lines 350 365) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L218(lines 218 233) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L185(lines 185 284) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L152(lines 152 163) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L334(lines 334 349) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L268(lines 268 279) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L136(lines 136 147) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L285(lines 285 384) no Hoare annotation was computed. [2020-10-28 17:12:21,511 INFO L274 CegarLoopResult]: For program point L252(lines 252 263) no Hoare annotation was computed. [2020-10-28 17:12:21,512 INFO L274 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-10-28 17:12:21,512 INFO L274 CegarLoopResult]: For program point L120(lines 120 131) no Hoare annotation was computed. [2020-10-28 17:12:21,512 INFO L274 CegarLoopResult]: For program point L368(lines 368 379) no Hoare annotation was computed. [2020-10-28 17:12:21,512 INFO L274 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-10-28 17:12:21,512 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 15 392) no Hoare annotation was computed. [2020-10-28 17:12:21,512 INFO L274 CegarLoopResult]: For program point L236(lines 236 247) no Hoare annotation was computed. [2020-10-28 17:12:21,512 INFO L274 CegarLoopResult]: For program point L104(lines 104 115) no Hoare annotation was computed. [2020-10-28 17:12:21,512 INFO L274 CegarLoopResult]: For program point L352(lines 352 363) no Hoare annotation was computed. [2020-10-28 17:12:21,513 INFO L274 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-10-28 17:12:21,513 INFO L274 CegarLoopResult]: For program point L220(lines 220 231) no Hoare annotation was computed. [2020-10-28 17:12:21,513 INFO L274 CegarLoopResult]: For program point L88(lines 88 90) no Hoare annotation was computed. [2020-10-28 17:12:21,513 INFO L274 CegarLoopResult]: For program point L336(lines 336 347) no Hoare annotation was computed. [2020-10-28 17:12:21,513 INFO L274 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-10-28 17:12:21,513 INFO L274 CegarLoopResult]: For program point L72(lines 72 74) no Hoare annotation was computed. [2020-10-28 17:12:21,513 INFO L274 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-10-28 17:12:21,513 INFO L274 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-10-28 17:12:21,514 INFO L274 CegarLoopResult]: For program point L56(lines 56 58) no Hoare annotation was computed. [2020-10-28 17:12:21,514 INFO L274 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-10-28 17:12:21,514 INFO L274 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-10-28 17:12:21,514 INFO L274 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-10-28 17:12:21,515 INFO L274 CegarLoopResult]: For program point L156(lines 156 158) no Hoare annotation was computed. [2020-10-28 17:12:21,515 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 387) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-10-28 17:12:21,515 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2020-10-28 17:12:21,515 INFO L274 CegarLoopResult]: For program point L272(lines 272 274) no Hoare annotation was computed. [2020-10-28 17:12:21,515 INFO L274 CegarLoopResult]: For program point L140(lines 140 142) no Hoare annotation was computed. [2020-10-28 17:12:21,515 INFO L274 CegarLoopResult]: For program point L256(lines 256 258) no Hoare annotation was computed. [2020-10-28 17:12:21,515 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-28 17:12:21,516 INFO L274 CegarLoopResult]: For program point L372(lines 372 374) no Hoare annotation was computed. [2020-10-28 17:12:21,516 INFO L274 CegarLoopResult]: For program point L240(lines 240 242) no Hoare annotation was computed. [2020-10-28 17:12:21,516 INFO L274 CegarLoopResult]: For program point L108(lines 108 110) no Hoare annotation was computed. [2020-10-28 17:12:21,516 INFO L274 CegarLoopResult]: For program point L356(lines 356 358) no Hoare annotation was computed. [2020-10-28 17:12:21,516 INFO L274 CegarLoopResult]: For program point L224(lines 224 226) no Hoare annotation was computed. [2020-10-28 17:12:21,516 INFO L270 CegarLoopResult]: At program point L373(lines 15 392) the Hoare annotation is: false [2020-10-28 17:12:21,516 INFO L274 CegarLoopResult]: For program point L340(lines 340 342) no Hoare annotation was computed. [2020-10-28 17:12:21,516 INFO L274 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-10-28 17:12:21,517 INFO L274 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-10-28 17:12:21,517 INFO L274 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-10-28 17:12:21,517 INFO L274 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-10-28 17:12:21,517 INFO L274 CegarLoopResult]: For program point L391(line 391) no Hoare annotation was computed. [2020-10-28 17:12:21,517 INFO L274 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-10-28 17:12:21,517 INFO L274 CegarLoopResult]: For program point L29(lines 29 48) no Hoare annotation was computed. [2020-10-28 17:12:21,517 INFO L274 CegarLoopResult]: For program point L30(lines 30 45) no Hoare annotation was computed. [2020-10-28 17:12:21,517 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 15 392) the Hoare annotation is: true [2020-10-28 17:12:21,518 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-10-28 17:12:21,518 INFO L274 CegarLoopResult]: For program point L82(lines 82 97) no Hoare annotation was computed. [2020-10-28 17:12:21,518 INFO L274 CegarLoopResult]: For program point L49(lines 49 100) no Hoare annotation was computed. [2020-10-28 17:12:21,518 INFO L274 CegarLoopResult]: For program point L66(lines 66 81) no Hoare annotation was computed. [2020-10-28 17:12:21,518 INFO L274 CegarLoopResult]: For program point L50(lines 50 65) no Hoare annotation was computed. [2020-10-28 17:12:21,518 INFO L274 CegarLoopResult]: For program point L166(lines 166 181) no Hoare annotation was computed. [2020-10-28 17:12:21,518 INFO L274 CegarLoopResult]: For program point L150(lines 150 165) no Hoare annotation was computed. [2020-10-28 17:12:21,518 INFO L274 CegarLoopResult]: For program point L84(lines 84 95) no Hoare annotation was computed. [2020-10-28 17:12:21,518 INFO L274 CegarLoopResult]: For program point L266(lines 266 281) no Hoare annotation was computed. [2020-10-28 17:12:21,519 INFO L274 CegarLoopResult]: For program point L134(lines 134 149) no Hoare annotation was computed. [2020-10-28 17:12:21,519 INFO L274 CegarLoopResult]: For program point L101(lines 101 184) no Hoare annotation was computed. [2020-10-28 17:12:21,519 INFO L274 CegarLoopResult]: For program point L68(lines 68 79) no Hoare annotation was computed. [2020-10-28 17:12:21,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:12:21 BoogieIcfgContainer [2020-10-28 17:12:21,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:12:21,544 INFO L168 Benchmark]: Toolchain (without parser) took 6893.45 ms. Allocated memory was 125.8 MB in the beginning and 191.9 MB in the end (delta: 66.1 MB). Free memory was 101.1 MB in the beginning and 78.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 90.5 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:21,544 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 125.8 MB. Free memory is still 88.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:12:21,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.08 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 88.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:21,546 INFO L168 Benchmark]: Boogie Preprocessor took 53.42 ms. Allocated memory is still 125.8 MB. Free memory was 88.9 MB in the beginning and 86.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:21,547 INFO L168 Benchmark]: RCFGBuilder took 815.02 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 86.9 MB in the beginning and 124.4 MB in the end (delta: -37.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:21,548 INFO L168 Benchmark]: TraceAbstraction took 5697.57 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 123.9 MB in the beginning and 78.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 78.8 MB. Max. memory is 8.0 GB. [2020-10-28 17:12:21,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 125.8 MB. Free memory is still 88.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 316.08 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 88.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.42 ms. Allocated memory is still 125.8 MB. Free memory was 88.9 MB in the beginning and 86.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 815.02 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 86.9 MB in the beginning and 124.4 MB in the end (delta: -37.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5697.57 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 123.9 MB in the beginning and 78.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 78.8 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: ((q <= 0 || ((3 <= q && 2 == this_state) && q <= 3)) || (this_state <= 0 && q <= 2)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((q <= 0 || ((3 <= q && 2 == this_state) && q <= 3)) || (this_state <= 0 && q <= 2)) || (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: 5.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 954 SDtfs, 1398 SDslu, 66 SDs, 0 SdLazy, 678 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 35 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 25 NumberOfFragments, 110 HoareAnnotationTreeSize, 17 FomulaSimplifications, 210 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 464 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 22453 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 49/49 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...