/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/loop-industry-pattern/nested-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:40:22,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:40:22,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:40:22,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:40:22,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:40:22,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:40:22,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:40:22,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:40:22,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:40:22,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:40:22,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:40:22,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:40:22,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:40:22,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:40:22,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:40:22,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:40:22,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:40:22,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:40:22,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:40:22,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:40:22,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:40:22,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:40:22,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:40:22,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:40:22,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:40:22,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:40:22,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:40:22,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:40:22,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:40:22,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:40:22,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:40:22,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:40:22,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:40:22,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:40:22,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:40:22,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:40:22,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:40:22,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:40:22,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:40:22,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:40:22,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:40:22,976 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 [2020-10-29 09:40:23,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:40:23,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:40:23,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:40:23,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:40:23,052 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:40:23,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:40:23,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:40:23,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:40:23,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:40:23,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:40:23,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:40:23,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:40:23,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:40:23,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:40:23,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:40:23,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:40:23,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:40:23,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:40:23,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:40:23,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:40:23,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:40:23,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:40:23,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:40:23,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:40:23,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:40:23,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:40:23,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:40:23,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:40:23,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:40:23,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:40:23,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:40:23,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:40:23,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:40:23,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:40:23,584 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:40:23,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/nested-3.c [2020-10-29 09:40:23,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/523614f36/6d46438a94864c7e8628841f4db2d927/FLAG31c1421de [2020-10-29 09:40:24,306 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:40:24,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/nested-3.c [2020-10-29 09:40:24,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/523614f36/6d46438a94864c7e8628841f4db2d927/FLAG31c1421de [2020-10-29 09:40:24,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/523614f36/6d46438a94864c7e8628841f4db2d927 [2020-10-29 09:40:24,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:40:24,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:40:24,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:40:24,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:40:24,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:40:24,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:40:24" (1/1) ... [2020-10-29 09:40:24,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d288e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24, skipping insertion in model container [2020-10-29 09:40:24,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:40:24" (1/1) ... [2020-10-29 09:40:24,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:40:24,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:40:24,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:40:24,888 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:40:24,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:40:24,928 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:40:24,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24 WrapperNode [2020-10-29 09:40:24,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:40:24,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:40:24,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:40:24,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:40:24,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24" (1/1) ... [2020-10-29 09:40:24,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24" (1/1) ... [2020-10-29 09:40:24,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24" (1/1) ... [2020-10-29 09:40:24,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24" (1/1) ... [2020-10-29 09:40:24,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24" (1/1) ... [2020-10-29 09:40:24,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24" (1/1) ... [2020-10-29 09:40:24,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24" (1/1) ... [2020-10-29 09:40:24,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:40:24,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:40:24,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:40:24,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:40:24,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24" (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 [2020-10-29 09:40:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:40:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:40:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:40:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:40:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:40:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:40:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:40:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:40:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:40:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:40:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:40:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:40:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:40:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:40:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:40:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:40:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:40:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:40:25,361 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:40:25,361 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 09:40:25,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:40:25 BoogieIcfgContainer [2020-10-29 09:40:25,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:40:25,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:40:25,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:40:25,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:40:25,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:40:24" (1/3) ... [2020-10-29 09:40:25,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be55fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:40:25, skipping insertion in model container [2020-10-29 09:40:25,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:40:24" (2/3) ... [2020-10-29 09:40:25,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be55fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:40:25, skipping insertion in model container [2020-10-29 09:40:25,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:40:25" (3/3) ... [2020-10-29 09:40:25,374 INFO L111 eAbstractionObserver]: Analyzing ICFG nested-3.c [2020-10-29 09:40:25,388 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:40:25,393 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:40:25,436 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:40:25,469 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:40:25,469 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:40:25,470 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:40:25,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:40:25,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:40:25,470 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:40:25,470 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:40:25,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:40:25,489 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-29 09:40:25,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:40:25,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:40:25,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:40:25,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:40:25,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:40:25,504 INFO L82 PathProgramCache]: Analyzing trace with hash -758433903, now seen corresponding path program 1 times [2020-10-29 09:40:25,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:40:25,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594617294] [2020-10-29 09:40:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:40:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:25,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:25,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:26,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:26,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:40:26,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:40:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-29 09:40:26,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:26,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:40:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:40:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:40:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:40:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:40:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:26,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:26,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:26,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:40:26,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:40:26,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:26,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:40:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:40:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:40:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:40:26,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594617294] [2020-10-29 09:40:26,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:40:26,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:40:26,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717359126] [2020-10-29 09:40:26,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:40:26,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:40:26,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:40:26,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:40:26,235 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-29 09:40:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:40:26,421 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2020-10-29 09:40:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:40:26,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 09:40:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:40:26,445 INFO L225 Difference]: With dead ends: 48 [2020-10-29 09:40:26,446 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 09:40:26,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:40:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 09:40:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-29 09:40:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-29 09:40:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-29 09:40:26,517 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 15 [2020-10-29 09:40:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:40:26,519 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-29 09:40:26,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:40:26,520 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-10-29 09:40:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:40:26,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:40:26,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:40:26,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:40:26,523 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:40:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:40:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1073831761, now seen corresponding path program 1 times [2020-10-29 09:40:26,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:40:26,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282225444] [2020-10-29 09:40:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:40:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:26,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:26,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:26,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:40:26,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 09:40:26,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:26,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:40:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:40:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:40:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:26,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:40:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:26,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:26,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:26,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:40:26,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:26,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:40:26,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:26,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:40:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:40:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:40:26,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:40:26,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282225444] [2020-10-29 09:40:26,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:40:26,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:40:26,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154026956] [2020-10-29 09:40:26,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:40:26,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:40:26,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:40:26,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:40:26,732 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 4 states. [2020-10-29 09:40:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:40:26,843 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2020-10-29 09:40:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:40:26,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 09:40:26,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:40:26,845 INFO L225 Difference]: With dead ends: 49 [2020-10-29 09:40:26,845 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 09:40:26,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:40:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 09:40:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2020-10-29 09:40:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 09:40:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-10-29 09:40:26,855 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2020-10-29 09:40:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:40:26,856 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-29 09:40:26,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:40:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-10-29 09:40:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:40:26,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:40:26,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:40:26,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:40:26,858 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:40:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:40:26,859 INFO L82 PathProgramCache]: Analyzing trace with hash 278686385, now seen corresponding path program 1 times [2020-10-29 09:40:26,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:40:26,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835117510] [2020-10-29 09:40:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:40:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:27,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:27,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:40:27,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:40:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-29 09:40:27,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:27,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:40:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:40:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:40:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:40:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:40:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:27,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:27,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:27,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:40:27,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:27,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:40:27,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:40:27,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:40:27,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835117510] [2020-10-29 09:40:27,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:40:27,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 09:40:27,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317825098] [2020-10-29 09:40:27,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:40:27,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:40:27,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:40:27,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:40:27,702 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 5 states. [2020-10-29 09:40:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:40:27,858 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2020-10-29 09:40:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:40:27,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-29 09:40:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:40:27,861 INFO L225 Difference]: With dead ends: 56 [2020-10-29 09:40:27,861 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 09:40:27,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:40:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 09:40:27,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-10-29 09:40:27,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 09:40:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2020-10-29 09:40:27,871 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2020-10-29 09:40:27,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:40:27,871 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2020-10-29 09:40:27,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:40:27,871 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2020-10-29 09:40:27,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:40:27,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:40:27,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:40:27,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:40:27,873 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:40:27,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:40:27,874 INFO L82 PathProgramCache]: Analyzing trace with hash -865541231, now seen corresponding path program 2 times [2020-10-29 09:40:27,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:40:27,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551794951] [2020-10-29 09:40:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:40:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:27,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:27,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:28,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:29,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:29,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:40:29,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 09:40:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1658 [2020-10-29 09:40:29,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:29,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:40:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:40:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:40:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 09:40:29,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:40:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:29,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:29,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:40:29,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:40:29,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:29,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:40:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:40:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:40:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:40:29,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551794951] [2020-10-29 09:40:29,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:40:29,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:40:29,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338709115] [2020-10-29 09:40:29,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:40:29,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:40:29,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:40:29,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:40:29,696 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 6 states. [2020-10-29 09:40:29,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:40:29,997 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2020-10-29 09:40:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:40:29,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-29 09:40:29,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:40:30,000 INFO L225 Difference]: With dead ends: 72 [2020-10-29 09:40:30,000 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:40:30,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:40:30,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:40:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2020-10-29 09:40:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 09:40:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-29 09:40:30,012 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 21 [2020-10-29 09:40:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:40:30,013 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-29 09:40:30,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:40:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2020-10-29 09:40:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:40:30,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:40:30,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:40:30,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:40:30,014 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:40:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:40:30,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1201309939, now seen corresponding path program 1 times [2020-10-29 09:40:30,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:40:30,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54631777] [2020-10-29 09:40:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:40:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:30,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:30,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:30,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:30,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:40:30,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:40:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-29 09:40:30,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:30,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:40:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:40:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:40:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:31,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:40:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:31,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:31,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:40:31,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:31,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:40:31,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:31,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:40:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:40:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:40:31,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:40:31,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54631777] [2020-10-29 09:40:31,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:40:31,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:40:31,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557385935] [2020-10-29 09:40:31,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:40:31,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:40:31,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:40:31,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:40:31,097 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand 10 states. [2020-10-29 09:40:31,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:40:31,568 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2020-10-29 09:40:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:40:31,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-29 09:40:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:40:31,571 INFO L225 Difference]: With dead ends: 89 [2020-10-29 09:40:31,571 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 09:40:31,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:40:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 09:40:31,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-29 09:40:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:40:31,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 09:40:31,582 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 21 [2020-10-29 09:40:31,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:40:31,582 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 09:40:31,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:40:31,582 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 09:40:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:40:31,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:40:31,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:40:31,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:40:31,584 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:40:31,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:40:31,584 INFO L82 PathProgramCache]: Analyzing trace with hash 573697423, now seen corresponding path program 1 times [2020-10-29 09:40:31,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:40:31,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807827711] [2020-10-29 09:40:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:40:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:40:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:40:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-29 09:40:31,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:31,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:40:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:40:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:40:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:40:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:40:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:40:32,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:40:32,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:40:32,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:40:32,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:40:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:40:32,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:40:32,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:40:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:40:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:40:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:40:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:40:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:40:32,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807827711] [2020-10-29 09:40:32,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:40:32,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:40:32,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138399022] [2020-10-29 09:40:32,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:40:32,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:40:32,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:40:32,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:40:32,149 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 9 states. [2020-10-29 09:40:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:40:32,381 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2020-10-29 09:40:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:40:32,382 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-29 09:40:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:40:32,383 INFO L225 Difference]: With dead ends: 43 [2020-10-29 09:40:32,383 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:40:32,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:40:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:40:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:40:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:40:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:40:32,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-29 09:40:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:40:32,385 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:40:32,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:40:32,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:40:32,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:40:32,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:40:32,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:40:32,758 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 09:40:32,759 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 09:40:32,759 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 09:40:32,759 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 09:40:32,759 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:40:32,759 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~last~0 |old(~last~0)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-29 09:40:32,759 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:40:32,760 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:40:32,760 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:40:32,760 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:40:32,760 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:40:32,760 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 18 32) no Hoare annotation was computed. [2020-10-29 09:40:32,760 INFO L274 CegarLoopResult]: For program point L25-1(lines 21 31) no Hoare annotation was computed. [2020-10-29 09:40:32,760 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2020-10-29 09:40:32,761 INFO L270 CegarLoopResult]: At program point L23-3(lines 23 24) the Hoare annotation is: (let ((.cse0 (= main_~b~0 main_~a~0)) (.cse1 (<= main_~c~0 200000))) (or (and .cse0 .cse1 (<= 1 main_~st~0)) (and (<= ~last~0 199999) .cse0 .cse1))) [2020-10-29 09:40:32,761 INFO L274 CegarLoopResult]: For program point L23-4(lines 21 31) no Hoare annotation was computed. [2020-10-29 09:40:32,761 INFO L274 CegarLoopResult]: For program point L21-2(lines 18 32) no Hoare annotation was computed. [2020-10-29 09:40:32,761 INFO L270 CegarLoopResult]: At program point L30(lines 21 31) the Hoare annotation is: (and (= main_~b~0 main_~a~0) (<= main_~c~0 200000)) [2020-10-29 09:40:32,761 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 18 32) the Hoare annotation is: (= ~last~0 |old(~last~0)|) [2020-10-29 09:40:32,761 INFO L270 CegarLoopResult]: At program point L28-1(lines 28 29) the Hoare annotation is: (and (< 199999 main_~c~0) (= main_~b~0 main_~a~0) (<= main_~c~0 200000)) [2020-10-29 09:40:32,761 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-10-29 09:40:32,762 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 11 16) the Hoare annotation is: true [2020-10-29 09:40:32,762 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 09:40:32,762 INFO L274 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-10-29 09:40:32,762 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-10-29 09:40:32,762 INFO L274 CegarLoopResult]: For program point L12-2(lines 11 16) no Hoare annotation was computed. [2020-10-29 09:40:32,762 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 11 16) no Hoare annotation was computed. [2020-10-29 09:40:32,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:40:32 BoogieIcfgContainer [2020-10-29 09:40:32,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:40:32,784 INFO L168 Benchmark]: Toolchain (without parser) took 8120.40 ms. Allocated memory was 154.1 MB in the beginning and 223.3 MB in the end (delta: 69.2 MB). Free memory was 130.8 MB in the beginning and 114.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 85.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:40:32,785 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 125.8 MB. Free memory is still 100.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:40:32,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.76 ms. Allocated memory is still 154.1 MB. Free memory was 130.3 MB in the beginning and 120.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:40:32,787 INFO L168 Benchmark]: Boogie Preprocessor took 38.38 ms. Allocated memory is still 154.1 MB. Free memory was 120.5 MB in the beginning and 119.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:40:32,788 INFO L168 Benchmark]: RCFGBuilder took 394.55 ms. Allocated memory is still 154.1 MB. Free memory was 118.8 MB in the beginning and 105.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:40:32,789 INFO L168 Benchmark]: TraceAbstraction took 7415.48 ms. Allocated memory was 154.1 MB in the beginning and 223.3 MB in the end (delta: 69.2 MB). Free memory was 104.5 MB in the beginning and 114.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:40:32,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 125.8 MB. Free memory is still 100.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.76 ms. Allocated memory is still 154.1 MB. Free memory was 130.3 MB in the beginning and 120.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.38 ms. Allocated memory is still 154.1 MB. Free memory was 120.5 MB in the beginning and 119.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 394.55 ms. Allocated memory is still 154.1 MB. Free memory was 118.8 MB in the beginning and 105.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7415.48 ms. Allocated memory was 154.1 MB in the beginning and 223.3 MB in the end (delta: 69.2 MB). Free memory was 104.5 MB in the beginning and 114.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 21]: Loop Invariant Derived loop invariant: b == a && c <= 200000 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((b == a && c <= 200000) && 1 <= st) || ((last <= 199999 && b == a) && c <= 200000) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 92 SDslu, 103 SDs, 0 SdLazy, 410 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 35 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 27 PreInvPairs, 38 NumberOfFragments, 82 HoareAnnotationTreeSize, 27 FomulaSimplifications, 212 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 253 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 9614 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 12/16 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...