/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block 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=0.4 --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 -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:12:44,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:12:44,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:12:44,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:12:44,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:12:44,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:12:44,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:12:44,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:12:44,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:12:44,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:12:44,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:12:44,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:12:44,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:12:44,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:12:44,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:12:44,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:12:44,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:12:44,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:12:44,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:12:44,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:12:44,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:12:44,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:12:44,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:12:44,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:12:44,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:12:44,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:12:44,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:12:44,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:12:44,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:12:44,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:12:44,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:12:44,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:12:44,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:12:44,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:12:44,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:12:44,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:12:44,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:12:44,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:12:44,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:12:44,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:12:44,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:12:44,968 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 [2020-10-14 05:12:44,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:12:44,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:12:44,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:12:44,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:12:44,994 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:12:44,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:12:44,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:12:44,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:12:44,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:12:44,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:12:44,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:12:44,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:12:44,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:12:44,995 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:12:44,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:12:44,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:12:44,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:12:44,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:12:44,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:12:44,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:12:44,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:12:44,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:12:44,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:12:44,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:12:44,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:12:44,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:12:44,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:12:44,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:12:44,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:12:44,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:12:45,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:12:45,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:12:45,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:12:45,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:12:45,311 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:12:45,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-10-14 05:12:45,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/faf8b30ba/95b2fabdf40145c99bd7004820545450/FLAGd60ff4e07 [2020-10-14 05:12:45,930 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:12:45,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-10-14 05:12:45,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/faf8b30ba/95b2fabdf40145c99bd7004820545450/FLAGd60ff4e07 [2020-10-14 05:12:46,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/faf8b30ba/95b2fabdf40145c99bd7004820545450 [2020-10-14 05:12:46,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:12:46,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:12:46,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:12:46,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:12:46,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:12:46,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:12:46" (1/1) ... [2020-10-14 05:12:46,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c7382a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46, skipping insertion in model container [2020-10-14 05:12:46,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:12:46" (1/1) ... [2020-10-14 05:12:46,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:12:46,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:12:46,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:12:46,523 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:12:46,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:12:46,556 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:12:46,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46 WrapperNode [2020-10-14 05:12:46,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:12:46,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:12:46,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:12:46,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:12:46,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46" (1/1) ... [2020-10-14 05:12:46,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46" (1/1) ... [2020-10-14 05:12:46,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46" (1/1) ... [2020-10-14 05:12:46,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46" (1/1) ... [2020-10-14 05:12:46,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46" (1/1) ... [2020-10-14 05:12:46,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46" (1/1) ... [2020-10-14 05:12:46,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46" (1/1) ... [2020-10-14 05:12:46,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:12:46,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:12:46,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:12:46,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:12:46,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46" (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 [2020-10-14 05:12:46,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:12:46,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:12:46,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:12:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:12:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:12:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:12:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:12:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:12:46,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:12:46,982 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:12:46,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:12:46 BoogieIcfgContainer [2020-10-14 05:12:46,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:12:46,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:12:46,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:12:46,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:12:46,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:12:46" (1/3) ... [2020-10-14 05:12:46,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b87097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:12:46, skipping insertion in model container [2020-10-14 05:12:46,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:12:46" (2/3) ... [2020-10-14 05:12:46,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b87097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:12:46, skipping insertion in model container [2020-10-14 05:12:46,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:12:46" (3/3) ... [2020-10-14 05:12:46,996 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-10-14 05:12:47,008 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:12:47,016 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:12:47,032 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:12:47,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:12:47,065 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:12:47,065 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:12:47,065 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:12:47,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:12:47,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:12:47,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:12:47,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:12:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-14 05:12:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:12:47,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:47,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:47,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:47,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:47,115 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-10-14 05:12:47,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:47,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510322854] [2020-10-14 05:12:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:12:47,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 05:12:47,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:12:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:12:47,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:47,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:12:47,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:12:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:47,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510322854] [2020-10-14 05:12:47,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:47,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:47,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511870968] [2020-10-14 05:12:47,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:47,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:47,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:47,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:47,480 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-14 05:12:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:47,535 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-10-14 05:12:47,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:47,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-14 05:12:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:47,551 INFO L225 Difference]: With dead ends: 57 [2020-10-14 05:12:47,552 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:12:47,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:12:47,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-10-14 05:12:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 05:12:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-10-14 05:12:47,606 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-10-14 05:12:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:47,606 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-10-14 05:12:47,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-10-14 05:12:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:12:47,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:47,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:47,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:12:47,609 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:47,610 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-10-14 05:12:47,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:47,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386959694] [2020-10-14 05:12:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:12:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 05:12:47,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 05:12:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:47,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:12:47,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:47,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:47,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386959694] [2020-10-14 05:12:47,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:47,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:47,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119554221] [2020-10-14 05:12:47,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:47,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:47,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:47,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:47,798 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-10-14 05:12:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:47,831 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-10-14 05:12:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:47,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-14 05:12:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:47,834 INFO L225 Difference]: With dead ends: 67 [2020-10-14 05:12:47,834 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:12:47,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:12:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-14 05:12:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 05:12:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-10-14 05:12:47,851 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-10-14 05:12:47,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:47,852 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-10-14 05:12:47,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:47,852 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-10-14 05:12:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 05:12:47,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:47,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:47,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:12:47,854 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:47,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-10-14 05:12:47,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:47,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619366496] [2020-10-14 05:12:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:12:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 05:12:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:12:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:47,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:47,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:47,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:47,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619366496] [2020-10-14 05:12:47,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:47,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:47,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027092887] [2020-10-14 05:12:47,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:47,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:47,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:47,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:47,979 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-10-14 05:12:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:48,003 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-10-14 05:12:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:48,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-14 05:12:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:48,006 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:12:48,006 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 05:12:48,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 05:12:48,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2020-10-14 05:12:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:12:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 87 transitions. [2020-10-14 05:12:48,022 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 87 transitions. Word has length 16 [2020-10-14 05:12:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:48,023 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 87 transitions. [2020-10-14 05:12:48,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 87 transitions. [2020-10-14 05:12:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 05:12:48,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:48,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:48,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:12:48,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:48,028 INFO L82 PathProgramCache]: Analyzing trace with hash 407111640, now seen corresponding path program 1 times [2020-10-14 05:12:48,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:48,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634090498] [2020-10-14 05:12:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:12:48,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 05:12:48,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:48,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:48,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:48,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:48,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:48,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:48,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:48,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634090498] [2020-10-14 05:12:48,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:48,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:48,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715203649] [2020-10-14 05:12:48,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:48,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:48,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:48,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,222 INFO L87 Difference]: Start difference. First operand 53 states and 87 transitions. Second operand 3 states. [2020-10-14 05:12:48,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:48,271 INFO L93 Difference]: Finished difference Result 121 states and 201 transitions. [2020-10-14 05:12:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:48,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-14 05:12:48,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:48,273 INFO L225 Difference]: With dead ends: 121 [2020-10-14 05:12:48,273 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 05:12:48,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 05:12:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-14 05:12:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 05:12:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 114 transitions. [2020-10-14 05:12:48,284 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 114 transitions. Word has length 16 [2020-10-14 05:12:48,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:48,285 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 114 transitions. [2020-10-14 05:12:48,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 114 transitions. [2020-10-14 05:12:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 05:12:48,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:48,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:48,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:12:48,287 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:48,287 INFO L82 PathProgramCache]: Analyzing trace with hash -944284077, now seen corresponding path program 1 times [2020-10-14 05:12:48,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:48,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799630602] [2020-10-14 05:12:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:12:48,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 05:12:48,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:12:48,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:48,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:12:48,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:48,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799630602] [2020-10-14 05:12:48,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:48,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:48,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522170302] [2020-10-14 05:12:48,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:48,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:48,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:48,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,429 INFO L87 Difference]: Start difference. First operand 71 states and 114 transitions. Second operand 3 states. [2020-10-14 05:12:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:48,447 INFO L93 Difference]: Finished difference Result 127 states and 204 transitions. [2020-10-14 05:12:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:48,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 05:12:48,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:48,450 INFO L225 Difference]: With dead ends: 127 [2020-10-14 05:12:48,450 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 05:12:48,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 05:12:48,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 99. [2020-10-14 05:12:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 05:12:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 158 transitions. [2020-10-14 05:12:48,469 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 158 transitions. Word has length 17 [2020-10-14 05:12:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:48,470 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 158 transitions. [2020-10-14 05:12:48,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 158 transitions. [2020-10-14 05:12:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 05:12:48,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:48,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:48,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:12:48,474 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:48,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:48,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1753630703, now seen corresponding path program 1 times [2020-10-14 05:12:48,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:48,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094867908] [2020-10-14 05:12:48,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:12:48,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:12:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 05:12:48,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:12:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:48,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:48,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:48,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094867908] [2020-10-14 05:12:48,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:48,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:48,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950869292] [2020-10-14 05:12:48,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:48,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:48,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:48,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,644 INFO L87 Difference]: Start difference. First operand 99 states and 158 transitions. Second operand 3 states. [2020-10-14 05:12:48,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:48,674 INFO L93 Difference]: Finished difference Result 152 states and 239 transitions. [2020-10-14 05:12:48,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:48,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 05:12:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:48,676 INFO L225 Difference]: With dead ends: 152 [2020-10-14 05:12:48,676 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 05:12:48,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 05:12:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-14 05:12:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 05:12:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 160 transitions. [2020-10-14 05:12:48,701 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 160 transitions. Word has length 17 [2020-10-14 05:12:48,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:48,701 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 160 transitions. [2020-10-14 05:12:48,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 160 transitions. [2020-10-14 05:12:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 05:12:48,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:48,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:48,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:12:48,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:48,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:48,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1073572333, now seen corresponding path program 1 times [2020-10-14 05:12:48,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:48,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928828773] [2020-10-14 05:12:48,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:12:48,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 05:12:48,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:12:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:48,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:48,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:48,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928828773] [2020-10-14 05:12:48,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:48,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:48,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60319278] [2020-10-14 05:12:48,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:48,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:48,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:48,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,791 INFO L87 Difference]: Start difference. First operand 104 states and 160 transitions. Second operand 3 states. [2020-10-14 05:12:48,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:48,816 INFO L93 Difference]: Finished difference Result 152 states and 230 transitions. [2020-10-14 05:12:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:48,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 05:12:48,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:48,817 INFO L225 Difference]: With dead ends: 152 [2020-10-14 05:12:48,818 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 05:12:48,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 05:12:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-14 05:12:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 05:12:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-10-14 05:12:48,828 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-10-14 05:12:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:48,828 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-10-14 05:12:48,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-10-14 05:12:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 05:12:48,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:48,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:48,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:12:48,830 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:48,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-10-14 05:12:48,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:48,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406900607] [2020-10-14 05:12:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:12:48,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:12:48,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:48,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:48,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406900607] [2020-10-14 05:12:48,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:48,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:48,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545848063] [2020-10-14 05:12:48,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:48,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:48,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:48,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,873 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-10-14 05:12:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:48,892 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-10-14 05:12:48,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:48,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 05:12:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:48,893 INFO L225 Difference]: With dead ends: 232 [2020-10-14 05:12:48,894 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 05:12:48,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 05:12:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-14 05:12:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 05:12:48,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-10-14 05:12:48,905 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-10-14 05:12:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:48,905 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-10-14 05:12:48,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-10-14 05:12:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 05:12:48,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:48,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:48,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:12:48,908 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:48,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:48,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-10-14 05:12:48,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:48,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602941679] [2020-10-14 05:12:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:12:48,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:48,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:12:48,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:12:48,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:48,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:48,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:48,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:48,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:48,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:48,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602941679] [2020-10-14 05:12:48,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:48,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:48,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438891527] [2020-10-14 05:12:48,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:48,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:48,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:48,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,960 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-10-14 05:12:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:48,981 INFO L93 Difference]: Finished difference Result 232 states and 332 transitions. [2020-10-14 05:12:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:48,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 05:12:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:48,983 INFO L225 Difference]: With dead ends: 232 [2020-10-14 05:12:48,983 INFO L226 Difference]: Without dead ends: 230 [2020-10-14 05:12:48,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:48,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-14 05:12:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 196. [2020-10-14 05:12:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 05:12:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 274 transitions. [2020-10-14 05:12:48,998 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 274 transitions. Word has length 18 [2020-10-14 05:12:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:48,998 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 274 transitions. [2020-10-14 05:12:48,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 274 transitions. [2020-10-14 05:12:49,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 05:12:49,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:49,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:49,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:12:49,001 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:49,001 INFO L82 PathProgramCache]: Analyzing trace with hash 290871309, now seen corresponding path program 1 times [2020-10-14 05:12:49,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:49,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815655922] [2020-10-14 05:12:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:12:49,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:49,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:12:49,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:49,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:12:49,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:49,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:49,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:49,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:49,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:12:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:49,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815655922] [2020-10-14 05:12:49,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:49,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:49,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560708347] [2020-10-14 05:12:49,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:49,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:49,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:49,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,075 INFO L87 Difference]: Start difference. First operand 196 states and 274 transitions. Second operand 3 states. [2020-10-14 05:12:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:49,106 INFO L93 Difference]: Finished difference Result 292 states and 404 transitions. [2020-10-14 05:12:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:49,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 05:12:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:49,110 INFO L225 Difference]: With dead ends: 292 [2020-10-14 05:12:49,110 INFO L226 Difference]: Without dead ends: 202 [2020-10-14 05:12:49,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-14 05:12:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-10-14 05:12:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-14 05:12:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-10-14 05:12:49,142 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-10-14 05:12:49,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:49,146 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-10-14 05:12:49,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-10-14 05:12:49,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 05:12:49,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:49,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:49,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:12:49,149 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-10-14 05:12:49,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:49,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92387846] [2020-10-14 05:12:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:12:49,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:12:49,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:49,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:49,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:49,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:49,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:49,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:49,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:49,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92387846] [2020-10-14 05:12:49,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:49,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:49,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804804051] [2020-10-14 05:12:49,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:49,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:49,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:49,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,225 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-10-14 05:12:49,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:49,247 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-10-14 05:12:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:49,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 05:12:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:49,250 INFO L225 Difference]: With dead ends: 444 [2020-10-14 05:12:49,250 INFO L226 Difference]: Without dead ends: 258 [2020-10-14 05:12:49,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-14 05:12:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-10-14 05:12:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-14 05:12:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-10-14 05:12:49,262 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-10-14 05:12:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:49,262 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-10-14 05:12:49,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-10-14 05:12:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:12:49,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:49,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:49,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:12:49,264 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:49,264 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-10-14 05:12:49,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:49,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292458193] [2020-10-14 05:12:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:12:49,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:12:49,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:12:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:49,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:49,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:49,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292458193] [2020-10-14 05:12:49,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:49,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:49,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20516176] [2020-10-14 05:12:49,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:49,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:49,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:49,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,319 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-10-14 05:12:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:49,337 INFO L93 Difference]: Finished difference Result 418 states and 527 transitions. [2020-10-14 05:12:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:49,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 05:12:49,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:49,340 INFO L225 Difference]: With dead ends: 418 [2020-10-14 05:12:49,341 INFO L226 Difference]: Without dead ends: 416 [2020-10-14 05:12:49,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-14 05:12:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 384. [2020-10-14 05:12:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-14 05:12:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 478 transitions. [2020-10-14 05:12:49,356 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 478 transitions. Word has length 19 [2020-10-14 05:12:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:49,356 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 478 transitions. [2020-10-14 05:12:49,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 478 transitions. [2020-10-14 05:12:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:12:49,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:49,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:49,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:12:49,358 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:49,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:49,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1455139996, now seen corresponding path program 1 times [2020-10-14 05:12:49,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:49,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484426119] [2020-10-14 05:12:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:12:49,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:12:49,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:12:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:49,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:49,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:49,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484426119] [2020-10-14 05:12:49,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:49,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:49,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334873846] [2020-10-14 05:12:49,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:49,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:49,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:49,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,416 INFO L87 Difference]: Start difference. First operand 384 states and 478 transitions. Second operand 3 states. [2020-10-14 05:12:49,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:49,433 INFO L93 Difference]: Finished difference Result 572 states and 704 transitions. [2020-10-14 05:12:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:49,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 05:12:49,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:49,437 INFO L225 Difference]: With dead ends: 572 [2020-10-14 05:12:49,437 INFO L226 Difference]: Without dead ends: 394 [2020-10-14 05:12:49,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-14 05:12:49,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-10-14 05:12:49,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-14 05:12:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-10-14 05:12:49,451 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-10-14 05:12:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:49,451 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-10-14 05:12:49,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:49,451 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-10-14 05:12:49,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:12:49,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:49,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:49,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:12:49,453 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:49,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:49,453 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-10-14 05:12:49,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:49,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143546622] [2020-10-14 05:12:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:12:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:12:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:12:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:49,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:12:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:49,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:12:49,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143546622] [2020-10-14 05:12:49,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:12:49,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:12:49,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261785713] [2020-10-14 05:12:49,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:12:49,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:49,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:12:49,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,492 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-10-14 05:12:49,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:49,515 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-10-14 05:12:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:12:49,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 05:12:49,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:49,516 INFO L225 Difference]: With dead ends: 856 [2020-10-14 05:12:49,516 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:12:49,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:12:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:12:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:12:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:12:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:12:49,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-14 05:12:49,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:49,520 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:12:49,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:12:49,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:12:49,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:12:49,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:12:49,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:12:49,549 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:12:49,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:12:49,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:12:49,550 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:12:49,550 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:12:49,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:12:49,550 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-10-14 05:12:49,550 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-10-14 05:12:49,551 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-10-14 05:12:49,551 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 05:12:49,551 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-10-14 05:12:49,551 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 05:12:49,551 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 05:12:49,551 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 05:12:49,551 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 05:12:49,551 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 05:12:49,552 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-10-14 05:12:49,552 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-10-14 05:12:49,552 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-10-14 05:12:49,552 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-10-14 05:12:49,552 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-10-14 05:12:49,552 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-10-14 05:12:49,552 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-10-14 05:12:49,553 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 05:12:49,553 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-10-14 05:12:49,553 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-10-14 05:12:49,553 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-10-14 05:12:49,553 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-10-14 05:12:49,553 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 05:12:49,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:12:49 BoogieIcfgContainer [2020-10-14 05:12:49,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:12:49,569 INFO L168 Benchmark]: Toolchain (without parser) took 3323.95 ms. Allocated memory was 146.8 MB in the beginning and 241.7 MB in the end (delta: 94.9 MB). Free memory was 103.0 MB in the beginning and 141.0 MB in the end (delta: -38.0 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:49,569 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 05:12:49,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.36 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 92.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:49,571 INFO L168 Benchmark]: Boogie Preprocessor took 137.50 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.4 MB in the beginning and 180.7 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:49,572 INFO L168 Benchmark]: RCFGBuilder took 291.83 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 165.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:49,573 INFO L168 Benchmark]: TraceAbstraction took 2577.42 ms. Allocated memory was 202.4 MB in the beginning and 241.7 MB in the end (delta: 39.3 MB). Free memory was 164.8 MB in the beginning and 141.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:12:49,576 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.36 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 92.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.50 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.4 MB in the beginning and 180.7 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.83 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 165.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2577.42 ms. Allocated memory was 202.4 MB in the beginning and 241.7 MB in the end (delta: 39.3 MB). Free memory was 164.8 MB in the beginning and 141.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 652 SDtfs, 284 SDslu, 427 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 6470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 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...