/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/psyco/psyco_accelerometer_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:22:52,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:22:52,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:22:52,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:22:52,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:22:52,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:22:52,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:22:52,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:22:52,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:22:52,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:22:52,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:22:52,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:22:52,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:22:52,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:22:52,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:22:52,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:22:52,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:22:52,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:22:52,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:22:53,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:22:53,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:22:53,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:22:53,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:22:53,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:22:53,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:22:53,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:22:53,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:22:53,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:22:53,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:22:53,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:22:53,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:22:53,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:22:53,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:22:53,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:22:53,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:22:53,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:22:53,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:22:53,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:22:53,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:22:53,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:22:53,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:22:53,034 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 07:22:53,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:22:53,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:22:53,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:22:53,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:22:53,089 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:22:53,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:22:53,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:22:53,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:22:53,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:22:53,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:22:53,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:22:53,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:22:53,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:22:53,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:22:53,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:22:53,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:22:53,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:22:53,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:22:53,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:22:53,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:22:53,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:22:53,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:22:53,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:22:53,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:22:53,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:22:53,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:22:53,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:22:53,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:22:53,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:22:53,095 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 07:22:53,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:22:53,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:22:53,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:22:53,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:22:53,433 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:22:53,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-10-14 07:22:53,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48fdbccf0/64adf822bb7040599a73d430bc8cc046/FLAGfcb0492c8 [2020-10-14 07:22:54,245 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:22:54,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-10-14 07:22:54,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48fdbccf0/64adf822bb7040599a73d430bc8cc046/FLAGfcb0492c8 [2020-10-14 07:22:54,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48fdbccf0/64adf822bb7040599a73d430bc8cc046 [2020-10-14 07:22:54,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:22:54,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:22:54,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:22:54,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:22:54,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:22:54,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:22:54" (1/1) ... [2020-10-14 07:22:54,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752aa8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:54, skipping insertion in model container [2020-10-14 07:22:54,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:22:54" (1/1) ... [2020-10-14 07:22:54,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:22:54,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:22:55,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:22:55,398 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:22:55,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:22:55,753 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:22:55,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55 WrapperNode [2020-10-14 07:22:55,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:22:55,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:22:55,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:22:55,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:22:55,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55" (1/1) ... [2020-10-14 07:22:55,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55" (1/1) ... [2020-10-14 07:22:55,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55" (1/1) ... [2020-10-14 07:22:55,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55" (1/1) ... [2020-10-14 07:22:55,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55" (1/1) ... [2020-10-14 07:22:55,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55" (1/1) ... [2020-10-14 07:22:56,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55" (1/1) ... [2020-10-14 07:22:56,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:22:56,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:22:56,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:22:56,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:22:56,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55" (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 07:22:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:22:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:22:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:22:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:22:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:22:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:22:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:22:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:22:57,904 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:22:57,905 INFO L295 CfgBuilder]: Removed 21 assume(true) statements. [2020-10-14 07:22:57,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:22:57 BoogieIcfgContainer [2020-10-14 07:22:57,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:22:57,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:22:57,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:22:57,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:22:57,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:22:54" (1/3) ... [2020-10-14 07:22:57,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de8dc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:22:57, skipping insertion in model container [2020-10-14 07:22:57,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:22:55" (2/3) ... [2020-10-14 07:22:57,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de8dc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:22:57, skipping insertion in model container [2020-10-14 07:22:57,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:22:57" (3/3) ... [2020-10-14 07:22:57,932 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_accelerometer_1.c [2020-10-14 07:22:57,942 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:22:57,953 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:22:57,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:22:58,002 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:22:58,002 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:22:58,003 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:22:58,003 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:22:58,003 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:22:58,003 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:22:58,003 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:22:58,003 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:22:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-10-14 07:22:58,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 07:22:58,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:58,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:58,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:58,044 INFO L82 PathProgramCache]: Analyzing trace with hash -358841446, now seen corresponding path program 1 times [2020-10-14 07:22:58,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:58,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712705006] [2020-10-14 07:22:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:58,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:58,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:58,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:22:58,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 07:22:58,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:58,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:58,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:58,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:22:58,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:58,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:22:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:58,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:58,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:58,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:58,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:22:58,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:58,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:22:58,432 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 07:22:58,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712705006] [2020-10-14 07:22:58,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:58,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 07:22:58,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362368653] [2020-10-14 07:22:58,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:22:58,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:58,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:22:58,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:22:58,468 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-10-14 07:22:58,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:22:58,600 INFO L93 Difference]: Finished difference Result 469 states and 916 transitions. [2020-10-14 07:22:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:22:58,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-14 07:22:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:22:58,630 INFO L225 Difference]: With dead ends: 469 [2020-10-14 07:22:58,631 INFO L226 Difference]: Without dead ends: 228 [2020-10-14 07:22:58,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:22:58,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-14 07:22:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-10-14 07:22:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-14 07:22:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 397 transitions. [2020-10-14 07:22:58,734 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 397 transitions. Word has length 13 [2020-10-14 07:22:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:22:58,735 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 397 transitions. [2020-10-14 07:22:58,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:22:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 397 transitions. [2020-10-14 07:22:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 07:22:58,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:22:58,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:22:58,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:22:58,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:22:58,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:22:58,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2001683715, now seen corresponding path program 1 times [2020-10-14 07:22:58,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:22:58,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732624896] [2020-10-14 07:22:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:22:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:58,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:59,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:59,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:22:59,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:22:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 07:22:59,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:59,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:22:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:22:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:22:59,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:22:59,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:22:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:22:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:22:59,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:22:59,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:22:59,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:22:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:22:59,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:22:59,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:22:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:22:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:22:59,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:22:59,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:22:59,181 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 07:22:59,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732624896] [2020-10-14 07:22:59,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:22:59,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:22:59,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232749574] [2020-10-14 07:22:59,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:22:59,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:22:59,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:22:59,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:22:59,187 INFO L87 Difference]: Start difference. First operand 228 states and 397 transitions. Second operand 4 states. [2020-10-14 07:23:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:00,342 INFO L93 Difference]: Finished difference Result 666 states and 1173 transitions. [2020-10-14 07:23:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:00,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 07:23:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:00,347 INFO L225 Difference]: With dead ends: 666 [2020-10-14 07:23:00,347 INFO L226 Difference]: Without dead ends: 436 [2020-10-14 07:23:00,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:00,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-14 07:23:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 422. [2020-10-14 07:23:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-14 07:23:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 753 transitions. [2020-10-14 07:23:00,374 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 753 transitions. Word has length 14 [2020-10-14 07:23:00,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:00,374 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 753 transitions. [2020-10-14 07:23:00,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:00,375 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 753 transitions. [2020-10-14 07:23:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 07:23:00,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:00,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:00,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:23:00,376 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:00,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1911236393, now seen corresponding path program 1 times [2020-10-14 07:23:00,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:00,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983436095] [2020-10-14 07:23:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:00,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:00,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:00,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 07:23:00,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:00,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 07:23:00,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:00,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:23:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:23:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:00,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:00,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:00,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:00,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:00,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:23:00,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:00,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:00,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:00,498 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 07:23:00,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983436095] [2020-10-14 07:23:00,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:00,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:00,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357085530] [2020-10-14 07:23:00,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:00,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:00,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:00,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:00,535 INFO L87 Difference]: Start difference. First operand 422 states and 753 transitions. Second operand 4 states. [2020-10-14 07:23:01,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:01,420 INFO L93 Difference]: Finished difference Result 852 states and 1524 transitions. [2020-10-14 07:23:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:01,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 07:23:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:01,426 INFO L225 Difference]: With dead ends: 852 [2020-10-14 07:23:01,426 INFO L226 Difference]: Without dead ends: 436 [2020-10-14 07:23:01,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-14 07:23:01,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 428. [2020-10-14 07:23:01,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-14 07:23:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 759 transitions. [2020-10-14 07:23:01,443 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 759 transitions. Word has length 15 [2020-10-14 07:23:01,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:01,444 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 759 transitions. [2020-10-14 07:23:01,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:01,444 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 759 transitions. [2020-10-14 07:23:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 07:23:01,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:01,445 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:01,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:23:01,446 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:01,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:01,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1773715145, now seen corresponding path program 1 times [2020-10-14 07:23:01,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:01,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385636086] [2020-10-14 07:23:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:01,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:23:01,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:23:01,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:01,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:23:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:23:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:01,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:01,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:01,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:23:01,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:01,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:23:01,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385636086] [2020-10-14 07:23:01,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:01,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:01,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949219484] [2020-10-14 07:23:01,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:01,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:01,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:01,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:01,543 INFO L87 Difference]: Start difference. First operand 428 states and 759 transitions. Second operand 4 states. [2020-10-14 07:23:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:01,724 INFO L93 Difference]: Finished difference Result 830 states and 1484 transitions. [2020-10-14 07:23:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:01,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 07:23:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:01,727 INFO L225 Difference]: With dead ends: 830 [2020-10-14 07:23:01,728 INFO L226 Difference]: Without dead ends: 408 [2020-10-14 07:23:01,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:01,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-14 07:23:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2020-10-14 07:23:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-14 07:23:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 727 transitions. [2020-10-14 07:23:01,742 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 727 transitions. Word has length 20 [2020-10-14 07:23:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:01,742 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 727 transitions. [2020-10-14 07:23:01,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 727 transitions. [2020-10-14 07:23:01,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 07:23:01,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:01,744 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:01,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:23:01,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:01,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1582631867, now seen corresponding path program 1 times [2020-10-14 07:23:01,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:01,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720026287] [2020-10-14 07:23:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:01,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:01,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 07:23:01,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:01,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 07:23:01,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:01,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:23:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:23:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:01,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:01,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:01,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:01,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:01,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:01,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:01,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:01,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:01,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:23:01,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720026287] [2020-10-14 07:23:01,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:01,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:01,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37944738] [2020-10-14 07:23:01,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:01,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:01,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:01,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:01,919 INFO L87 Difference]: Start difference. First operand 408 states and 727 transitions. Second operand 4 states. [2020-10-14 07:23:02,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:02,706 INFO L93 Difference]: Finished difference Result 650 states and 1149 transitions. [2020-10-14 07:23:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:02,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 07:23:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:02,708 INFO L225 Difference]: With dead ends: 650 [2020-10-14 07:23:02,708 INFO L226 Difference]: Without dead ends: 258 [2020-10-14 07:23:02,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-14 07:23:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-10-14 07:23:02,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-14 07:23:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 435 transitions. [2020-10-14 07:23:02,719 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 435 transitions. Word has length 23 [2020-10-14 07:23:02,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:02,719 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 435 transitions. [2020-10-14 07:23:02,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:02,719 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 435 transitions. [2020-10-14 07:23:02,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 07:23:02,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:02,720 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:02,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:23:02,721 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:02,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:02,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1006681014, now seen corresponding path program 1 times [2020-10-14 07:23:02,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:02,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447077125] [2020-10-14 07:23:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:02,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:02,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 07:23:02,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:02,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:23:02,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:02,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:23:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:23:02,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:02,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:02,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:02,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:02,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:23:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:02,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:23:02,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447077125] [2020-10-14 07:23:02,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:02,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:02,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924215251] [2020-10-14 07:23:02,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:02,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:02,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:02,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:02,838 INFO L87 Difference]: Start difference. First operand 256 states and 435 transitions. Second operand 4 states. [2020-10-14 07:23:03,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:03,076 INFO L93 Difference]: Finished difference Result 258 states and 436 transitions. [2020-10-14 07:23:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:03,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 07:23:03,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:03,080 INFO L225 Difference]: With dead ends: 258 [2020-10-14 07:23:03,080 INFO L226 Difference]: Without dead ends: 256 [2020-10-14 07:23:03,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-14 07:23:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-10-14 07:23:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-14 07:23:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 427 transitions. [2020-10-14 07:23:03,090 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 427 transitions. Word has length 23 [2020-10-14 07:23:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:03,091 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 427 transitions. [2020-10-14 07:23:03,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 427 transitions. [2020-10-14 07:23:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 07:23:03,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:03,092 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:03,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:23:03,093 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:03,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1124944987, now seen corresponding path program 1 times [2020-10-14 07:23:03,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:03,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804155685] [2020-10-14 07:23:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:03,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:03,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:03,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:23:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 07:23:03,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:03,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:23:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:23:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:03,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:03,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:03,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:23:03,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:03,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:23:03,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804155685] [2020-10-14 07:23:03,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:03,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:03,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66084807] [2020-10-14 07:23:03,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:03,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:03,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:03,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:03,309 INFO L87 Difference]: Start difference. First operand 256 states and 427 transitions. Second operand 4 states. [2020-10-14 07:23:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:04,348 INFO L93 Difference]: Finished difference Result 672 states and 1133 transitions. [2020-10-14 07:23:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:04,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 07:23:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:04,352 INFO L225 Difference]: With dead ends: 672 [2020-10-14 07:23:04,352 INFO L226 Difference]: Without dead ends: 428 [2020-10-14 07:23:04,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-10-14 07:23:04,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 415. [2020-10-14 07:23:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-14 07:23:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 631 transitions. [2020-10-14 07:23:04,367 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 631 transitions. Word has length 26 [2020-10-14 07:23:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:04,367 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 631 transitions. [2020-10-14 07:23:04,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 631 transitions. [2020-10-14 07:23:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 07:23:04,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:04,369 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:04,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:23:04,370 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:04,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1803598039, now seen corresponding path program 1 times [2020-10-14 07:23:04,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:04,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85114117] [2020-10-14 07:23:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:04,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:04,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:04,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:23:04,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 07:23:04,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:04,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:04,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:23:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:23:04,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:04,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:04,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:04,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:04,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 07:23:04,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85114117] [2020-10-14 07:23:04,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:04,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:04,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179406059] [2020-10-14 07:23:04,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:04,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:04,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:04,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:04,540 INFO L87 Difference]: Start difference. First operand 415 states and 631 transitions. Second operand 4 states. [2020-10-14 07:23:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:04,735 INFO L93 Difference]: Finished difference Result 749 states and 1150 transitions. [2020-10-14 07:23:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:04,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-14 07:23:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:04,740 INFO L225 Difference]: With dead ends: 749 [2020-10-14 07:23:04,741 INFO L226 Difference]: Without dead ends: 350 [2020-10-14 07:23:04,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-14 07:23:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2020-10-14 07:23:04,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-14 07:23:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 535 transitions. [2020-10-14 07:23:04,756 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 535 transitions. Word has length 36 [2020-10-14 07:23:04,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:04,758 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 535 transitions. [2020-10-14 07:23:04,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 535 transitions. [2020-10-14 07:23:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 07:23:04,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:04,762 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:04,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:23:04,763 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:04,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:04,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1771198676, now seen corresponding path program 1 times [2020-10-14 07:23:04,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:04,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970100166] [2020-10-14 07:23:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:04,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:04,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:23:04,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 07:23:04,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:04,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:23:04,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:23:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:05,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:05,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:05,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:23:05,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:05,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:05,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 07:23:05,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970100166] [2020-10-14 07:23:05,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:05,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:05,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373851940] [2020-10-14 07:23:05,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:05,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:05,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:05,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:05,046 INFO L87 Difference]: Start difference. First operand 350 states and 535 transitions. Second operand 4 states. [2020-10-14 07:23:05,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:05,216 INFO L93 Difference]: Finished difference Result 678 states and 1046 transitions. [2020-10-14 07:23:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:05,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-14 07:23:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:05,219 INFO L225 Difference]: With dead ends: 678 [2020-10-14 07:23:05,219 INFO L226 Difference]: Without dead ends: 344 [2020-10-14 07:23:05,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-14 07:23:05,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2020-10-14 07:23:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-14 07:23:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 515 transitions. [2020-10-14 07:23:05,230 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 515 transitions. Word has length 37 [2020-10-14 07:23:05,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:05,231 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 515 transitions. [2020-10-14 07:23:05,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 515 transitions. [2020-10-14 07:23:05,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 07:23:05,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:05,232 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:05,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:23:05,232 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:05,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2025838196, now seen corresponding path program 1 times [2020-10-14 07:23:05,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:05,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413739270] [2020-10-14 07:23:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:05,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 07:23:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 07:23:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:05,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:23:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 07:23:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:05,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:05,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:05,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:05,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:05,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 07:23:05,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413739270] [2020-10-14 07:23:05,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:05,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:05,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131202068] [2020-10-14 07:23:05,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:05,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:05,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:05,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:05,376 INFO L87 Difference]: Start difference. First operand 344 states and 515 transitions. Second operand 4 states. [2020-10-14 07:23:06,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:06,140 INFO L93 Difference]: Finished difference Result 387 states and 556 transitions. [2020-10-14 07:23:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:06,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 07:23:06,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:06,144 INFO L225 Difference]: With dead ends: 387 [2020-10-14 07:23:06,145 INFO L226 Difference]: Without dead ends: 350 [2020-10-14 07:23:06,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-14 07:23:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 344. [2020-10-14 07:23:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-14 07:23:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 479 transitions. [2020-10-14 07:23:06,156 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 479 transitions. Word has length 41 [2020-10-14 07:23:06,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:06,156 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 479 transitions. [2020-10-14 07:23:06,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 479 transitions. [2020-10-14 07:23:06,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 07:23:06,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:06,158 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:06,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:23:06,158 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:06,158 INFO L82 PathProgramCache]: Analyzing trace with hash -197451388, now seen corresponding path program 1 times [2020-10-14 07:23:06,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:06,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864745723] [2020-10-14 07:23:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:06,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:06,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:06,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 07:23:06,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:23:06,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 07:23:06,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:06,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:23:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:23:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:06,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:06,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:06,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:06,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:23:06,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:06,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:06,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:06,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:23:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 07:23:06,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864745723] [2020-10-14 07:23:06,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:06,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:06,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69540019] [2020-10-14 07:23:06,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:06,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:06,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:06,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:06,448 INFO L87 Difference]: Start difference. First operand 344 states and 479 transitions. Second operand 4 states. [2020-10-14 07:23:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:06,677 INFO L93 Difference]: Finished difference Result 653 states and 911 transitions. [2020-10-14 07:23:06,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:06,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-14 07:23:06,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:06,680 INFO L225 Difference]: With dead ends: 653 [2020-10-14 07:23:06,680 INFO L226 Difference]: Without dead ends: 325 [2020-10-14 07:23:06,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-14 07:23:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2020-10-14 07:23:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-14 07:23:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 448 transitions. [2020-10-14 07:23:06,693 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 448 transitions. Word has length 42 [2020-10-14 07:23:06,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:06,693 INFO L479 AbstractCegarLoop]: Abstraction has 325 states and 448 transitions. [2020-10-14 07:23:06,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 448 transitions. [2020-10-14 07:23:06,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 07:23:06,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:23:06,695 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:23:06,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:23:06,695 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:23:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:23:06,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1099613084, now seen corresponding path program 1 times [2020-10-14 07:23:06,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:23:06,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366979210] [2020-10-14 07:23:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:23:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:06,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:06,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:23:06,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 07:23:06,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:06,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:23:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:23:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:23:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:06,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:23:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:23:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:23:06,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:23:06,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:23:06,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:23:06,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:23:06,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:23:06,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:23:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:23:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:23:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:23:06,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:23:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 07:23:06,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366979210] [2020-10-14 07:23:06,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:23:06,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:23:06,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622045962] [2020-10-14 07:23:06,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:23:06,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:23:06,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:23:06,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:23:06,834 INFO L87 Difference]: Start difference. First operand 325 states and 448 transitions. Second operand 4 states. [2020-10-14 07:23:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:23:07,245 INFO L93 Difference]: Finished difference Result 494 states and 691 transitions. [2020-10-14 07:23:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:23:07,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-14 07:23:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:23:07,246 INFO L225 Difference]: With dead ends: 494 [2020-10-14 07:23:07,246 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 07:23:07,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:23:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 07:23:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 07:23:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 07:23:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 07:23:07,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-10-14 07:23:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:23:07,249 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 07:23:07,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:23:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 07:23:07,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 07:23:07,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:23:07,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 07:23:07,657 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2020-10-14 07:23:07,807 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2020-10-14 07:23:07,810 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 07:23:07,811 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= ~m_getValueX~0 |old(~m_getValueX~0)|) (= ~m_update~0 |old(~m_update~0)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= ~m_dataReceived~0 |old(~m_dataReceived~0)|) (= ~m_getValueY~0 |old(~m_getValueY~0)|) (= ~m_init~0 |old(~m_init~0)|) (= ~m_Accelerometer~0 |old(~m_Accelerometer~0)|) (= ~m_disconnect~0 |old(~m_disconnect~0)|)) [2020-10-14 07:23:07,811 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:23:07,811 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:23:07,811 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 07:23:07,812 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 07:23:07,812 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 07:23:07,812 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 1255) no Hoare annotation was computed. [2020-10-14 07:23:07,812 INFO L268 CegarLoopResult]: For program point L895(lines 895 897) no Hoare annotation was computed. [2020-10-14 07:23:07,812 INFO L268 CegarLoopResult]: For program point L763(lines 763 774) no Hoare annotation was computed. [2020-10-14 07:23:07,812 INFO L268 CegarLoopResult]: For program point L697(lines 697 712) no Hoare annotation was computed. [2020-10-14 07:23:07,812 INFO L268 CegarLoopResult]: For program point L367(lines 367 369) no Hoare annotation was computed. [2020-10-14 07:23:07,812 INFO L268 CegarLoopResult]: For program point L235(lines 235 237) no Hoare annotation was computed. [2020-10-14 07:23:07,812 INFO L268 CegarLoopResult]: For program point L103(lines 103 105) no Hoare annotation was computed. [2020-10-14 07:23:07,813 INFO L268 CegarLoopResult]: For program point L831(lines 831 833) no Hoare annotation was computed. [2020-10-14 07:23:07,813 INFO L268 CegarLoopResult]: For program point L699(lines 699 710) no Hoare annotation was computed. [2020-10-14 07:23:07,813 INFO L268 CegarLoopResult]: For program point L633(lines 633 648) no Hoare annotation was computed. [2020-10-14 07:23:07,813 INFO L268 CegarLoopResult]: For program point L171(lines 171 173) no Hoare annotation was computed. [2020-10-14 07:23:07,813 INFO L268 CegarLoopResult]: For program point L1229(lines 1229 1244) no Hoare annotation was computed. [2020-10-14 07:23:07,813 INFO L268 CegarLoopResult]: For program point L767(lines 767 769) no Hoare annotation was computed. [2020-10-14 07:23:07,813 INFO L268 CegarLoopResult]: For program point L635(lines 635 646) no Hoare annotation was computed. [2020-10-14 07:23:07,813 INFO L268 CegarLoopResult]: For program point L569(lines 569 584) no Hoare annotation was computed. [2020-10-14 07:23:07,814 INFO L268 CegarLoopResult]: For program point L1231(lines 1231 1242) no Hoare annotation was computed. [2020-10-14 07:23:07,814 INFO L268 CegarLoopResult]: For program point L1165(lines 1165 1180) no Hoare annotation was computed. [2020-10-14 07:23:07,814 INFO L268 CegarLoopResult]: For program point L1033(lines 1033 1048) no Hoare annotation was computed. [2020-10-14 07:23:07,814 INFO L268 CegarLoopResult]: For program point L703(lines 703 705) no Hoare annotation was computed. [2020-10-14 07:23:07,814 INFO L268 CegarLoopResult]: For program point L571(lines 571 582) no Hoare annotation was computed. [2020-10-14 07:23:07,814 INFO L268 CegarLoopResult]: For program point L505(lines 505 520) no Hoare annotation was computed. [2020-10-14 07:23:07,814 INFO L268 CegarLoopResult]: For program point L1167(lines 1167 1178) no Hoare annotation was computed. [2020-10-14 07:23:07,814 INFO L268 CegarLoopResult]: For program point L1101(lines 1101 1116) no Hoare annotation was computed. [2020-10-14 07:23:07,814 INFO L268 CegarLoopResult]: For program point L44(lines 44 63) no Hoare annotation was computed. [2020-10-14 07:23:07,815 INFO L268 CegarLoopResult]: For program point L1035(lines 1035 1046) no Hoare annotation was computed. [2020-10-14 07:23:07,815 INFO L268 CegarLoopResult]: For program point L969(lines 969 984) no Hoare annotation was computed. [2020-10-14 07:23:07,815 INFO L268 CegarLoopResult]: For program point L639(lines 639 641) no Hoare annotation was computed. [2020-10-14 07:23:07,815 INFO L268 CegarLoopResult]: For program point L507(lines 507 518) no Hoare annotation was computed. [2020-10-14 07:23:07,815 INFO L268 CegarLoopResult]: For program point L441(lines 441 456) no Hoare annotation was computed. [2020-10-14 07:23:07,815 INFO L268 CegarLoopResult]: For program point L309(lines 309 324) no Hoare annotation was computed. [2020-10-14 07:23:07,815 INFO L268 CegarLoopResult]: For program point L45(lines 45 60) no Hoare annotation was computed. [2020-10-14 07:23:07,815 INFO L268 CegarLoopResult]: For program point L1235(lines 1235 1237) no Hoare annotation was computed. [2020-10-14 07:23:07,815 INFO L268 CegarLoopResult]: For program point L1103(lines 1103 1114) no Hoare annotation was computed. [2020-10-14 07:23:07,816 INFO L268 CegarLoopResult]: For program point L971(lines 971 982) no Hoare annotation was computed. [2020-10-14 07:23:07,816 INFO L268 CegarLoopResult]: For program point L905(lines 905 920) no Hoare annotation was computed. [2020-10-14 07:23:07,816 INFO L268 CegarLoopResult]: For program point L575(lines 575 577) no Hoare annotation was computed. [2020-10-14 07:23:07,816 INFO L268 CegarLoopResult]: For program point L443(lines 443 454) no Hoare annotation was computed. [2020-10-14 07:23:07,816 INFO L268 CegarLoopResult]: For program point L377(lines 377 392) no Hoare annotation was computed. [2020-10-14 07:23:07,816 INFO L268 CegarLoopResult]: For program point L311(lines 311 322) no Hoare annotation was computed. [2020-10-14 07:23:07,816 INFO L268 CegarLoopResult]: For program point L245(lines 245 260) no Hoare annotation was computed. [2020-10-14 07:23:07,817 INFO L264 CegarLoopResult]: At program point L1236(lines 16 1255) the Hoare annotation is: false [2020-10-14 07:23:07,817 INFO L268 CegarLoopResult]: For program point L113(lines 113 128) no Hoare annotation was computed. [2020-10-14 07:23:07,817 INFO L268 CegarLoopResult]: For program point L47(lines 47 58) no Hoare annotation was computed. [2020-10-14 07:23:07,817 INFO L268 CegarLoopResult]: For program point L1171(lines 1171 1173) no Hoare annotation was computed. [2020-10-14 07:23:07,817 INFO L268 CegarLoopResult]: For program point L1039(lines 1039 1041) no Hoare annotation was computed. [2020-10-14 07:23:07,817 INFO L268 CegarLoopResult]: For program point L907(lines 907 918) no Hoare annotation was computed. [2020-10-14 07:23:07,817 INFO L268 CegarLoopResult]: For program point L841(lines 841 856) no Hoare annotation was computed. [2020-10-14 07:23:07,817 INFO L268 CegarLoopResult]: For program point L511(lines 511 513) no Hoare annotation was computed. [2020-10-14 07:23:07,817 INFO L268 CegarLoopResult]: For program point L379(lines 379 390) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L247(lines 247 258) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L181(lines 181 196) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L115(lines 115 126) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L1107(lines 1107 1109) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L975(lines 975 977) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L843(lines 843 854) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L777(lines 777 792) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L447(lines 447 449) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L315(lines 315 317) no Hoare annotation was computed. [2020-10-14 07:23:07,818 INFO L268 CegarLoopResult]: For program point L183(lines 183 194) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L911(lines 911 913) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L779(lines 779 790) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L713(lines 713 728) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L383(lines 383 385) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L251(lines 251 253) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L119(lines 119 121) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L847(lines 847 849) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L715(lines 715 726) no Hoare annotation was computed. [2020-10-14 07:23:07,819 INFO L268 CegarLoopResult]: For program point L649(lines 649 664) no Hoare annotation was computed. [2020-10-14 07:23:07,820 INFO L268 CegarLoopResult]: For program point L187(lines 187 189) no Hoare annotation was computed. [2020-10-14 07:23:07,820 INFO L268 CegarLoopResult]: For program point L783(lines 783 785) no Hoare annotation was computed. [2020-10-14 07:23:07,820 INFO L268 CegarLoopResult]: For program point L651(lines 651 662) no Hoare annotation was computed. [2020-10-14 07:23:07,820 INFO L268 CegarLoopResult]: For program point L585(lines 585 600) no Hoare annotation was computed. [2020-10-14 07:23:07,821 INFO L264 CegarLoopResult]: At program point L1246(lines 32 1250) the Hoare annotation is: (let ((.cse0 (<= 1 main_~this_m_delta~0)) (.cse2 (<= 1 main_~this_m_conn~0)) (.cse1 (= main_~this_m_conn_data_listener~0 0))) (or (and (<= 2 main_~q~0) (= main_~this_m_conn~0 0) .cse0 .cse1 (<= main_~q~0 2)) (and (<= main_~q~0 0) .cse0 .cse1) (and (<= 1 main_~this_m_conn_data_listener~0) (<= 3 main_~q~0) .cse0 .cse2 (<= main_~q~0 3)) (and (<= 4 main_~q~0) .cse0 .cse2 .cse1))) [2020-10-14 07:23:07,822 INFO L268 CegarLoopResult]: For program point L1181(lines 1181 1196) no Hoare annotation was computed. [2020-10-14 07:23:07,822 INFO L268 CegarLoopResult]: For program point L1049(lines 1049 1064) no Hoare annotation was computed. [2020-10-14 07:23:07,822 INFO L268 CegarLoopResult]: For program point L719(lines 719 721) no Hoare annotation was computed. [2020-10-14 07:23:07,822 INFO L268 CegarLoopResult]: For program point L587(lines 587 598) no Hoare annotation was computed. [2020-10-14 07:23:07,822 INFO L268 CegarLoopResult]: For program point L521(lines 521 536) no Hoare annotation was computed. [2020-10-14 07:23:07,822 INFO L268 CegarLoopResult]: For program point L1183(lines 1183 1194) no Hoare annotation was computed. [2020-10-14 07:23:07,822 INFO L268 CegarLoopResult]: For program point L1117(lines 1117 1132) no Hoare annotation was computed. [2020-10-14 07:23:07,822 INFO L268 CegarLoopResult]: For program point L1051(lines 1051 1062) no Hoare annotation was computed. [2020-10-14 07:23:07,822 INFO L268 CegarLoopResult]: For program point L985(lines 985 1000) no Hoare annotation was computed. [2020-10-14 07:23:07,823 INFO L268 CegarLoopResult]: For program point L655(lines 655 657) no Hoare annotation was computed. [2020-10-14 07:23:07,823 INFO L268 CegarLoopResult]: For program point L523(lines 523 534) no Hoare annotation was computed. [2020-10-14 07:23:07,823 INFO L268 CegarLoopResult]: For program point L457(lines 457 472) no Hoare annotation was computed. [2020-10-14 07:23:07,823 INFO L268 CegarLoopResult]: For program point L1119(lines 1119 1130) no Hoare annotation was computed. [2020-10-14 07:23:07,823 INFO L268 CegarLoopResult]: For program point L987(lines 987 998) no Hoare annotation was computed. [2020-10-14 07:23:07,823 INFO L268 CegarLoopResult]: For program point L921(lines 921 936) no Hoare annotation was computed. [2020-10-14 07:23:07,823 INFO L268 CegarLoopResult]: For program point L591(lines 591 593) no Hoare annotation was computed. [2020-10-14 07:23:07,823 INFO L268 CegarLoopResult]: For program point L459(lines 459 470) no Hoare annotation was computed. [2020-10-14 07:23:07,823 INFO L268 CegarLoopResult]: For program point L393(lines 393 408) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L261(lines 261 276) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L129(lines 129 144) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L328(lines 328 1067) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L1187(lines 1187 1189) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L64(lines 64 147) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L1055(lines 1055 1057) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L923(lines 923 934) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L857(lines 857 872) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L527(lines 527 529) no Hoare annotation was computed. [2020-10-14 07:23:07,824 INFO L268 CegarLoopResult]: For program point L395(lines 395 406) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L329(lines 329 344) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L263(lines 263 274) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L197(lines 197 212) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L131(lines 131 142) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L65(lines 65 80) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L1123(lines 1123 1125) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L991(lines 991 993) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L859(lines 859 870) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L793(lines 793 808) no Hoare annotation was computed. [2020-10-14 07:23:07,825 INFO L268 CegarLoopResult]: For program point L463(lines 463 465) no Hoare annotation was computed. [2020-10-14 07:23:07,826 INFO L268 CegarLoopResult]: For program point L331(lines 331 342) no Hoare annotation was computed. [2020-10-14 07:23:07,826 INFO L268 CegarLoopResult]: For program point L199(lines 199 210) no Hoare annotation was computed. [2020-10-14 07:23:07,826 INFO L268 CegarLoopResult]: For program point L67(lines 67 78) no Hoare annotation was computed. [2020-10-14 07:23:07,826 INFO L268 CegarLoopResult]: For program point L927(lines 927 929) no Hoare annotation was computed. [2020-10-14 07:23:07,826 INFO L268 CegarLoopResult]: For program point L795(lines 795 806) no Hoare annotation was computed. [2020-10-14 07:23:07,826 INFO L268 CegarLoopResult]: For program point L729(lines 729 744) no Hoare annotation was computed. [2020-10-14 07:23:07,826 INFO L268 CegarLoopResult]: For program point L399(lines 399 401) no Hoare annotation was computed. [2020-10-14 07:23:07,826 INFO L268 CegarLoopResult]: For program point L267(lines 267 269) no Hoare annotation was computed. [2020-10-14 07:23:07,826 INFO L268 CegarLoopResult]: For program point L135(lines 135 137) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point L863(lines 863 865) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point L731(lines 731 742) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point L665(lines 665 680) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point L335(lines 335 337) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 1255) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point L203(lines 203 205) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point L71(lines 71 73) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point L799(lines 799 801) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point L667(lines 667 678) no Hoare annotation was computed. [2020-10-14 07:23:07,827 INFO L268 CegarLoopResult]: For program point L601(lines 601 616) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L1197(lines 1197 1212) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L735(lines 735 737) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L603(lines 603 614) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L537(lines 537 552) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L1199(lines 1199 1210) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L1133(lines 1133 1148) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L1001(lines 1001 1016) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L671(lines 671 673) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L539(lines 539 550) no Hoare annotation was computed. [2020-10-14 07:23:07,828 INFO L268 CegarLoopResult]: For program point L473(lines 473 488) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point L1068(lines 1068 1247) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point L1135(lines 1135 1146) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point L1069(lines 1069 1084) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point L1003(lines 1003 1014) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point L937(lines 937 952) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point L607(lines 607 609) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point L475(lines 475 486) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point L409(lines 409 424) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point L277(lines 277 292) no Hoare annotation was computed. [2020-10-14 07:23:07,829 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1254) no Hoare annotation was computed. [2020-10-14 07:23:07,830 INFO L268 CegarLoopResult]: For program point L1203(lines 1203 1205) no Hoare annotation was computed. [2020-10-14 07:23:07,830 INFO L268 CegarLoopResult]: For program point L1071(lines 1071 1082) no Hoare annotation was computed. [2020-10-14 07:23:07,830 INFO L268 CegarLoopResult]: For program point L939(lines 939 950) no Hoare annotation was computed. [2020-10-14 07:23:07,830 INFO L268 CegarLoopResult]: For program point L873(lines 873 888) no Hoare annotation was computed. [2020-10-14 07:23:07,830 INFO L268 CegarLoopResult]: For program point L543(lines 543 545) no Hoare annotation was computed. [2020-10-14 07:23:07,830 INFO L268 CegarLoopResult]: For program point L411(lines 411 422) no Hoare annotation was computed. [2020-10-14 07:23:07,830 INFO L268 CegarLoopResult]: For program point L345(lines 345 360) no Hoare annotation was computed. [2020-10-14 07:23:07,830 INFO L268 CegarLoopResult]: For program point L279(lines 279 290) no Hoare annotation was computed. [2020-10-14 07:23:07,830 INFO L268 CegarLoopResult]: For program point L213(lines 213 228) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L81(lines 81 96) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L148(lines 148 327) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L1139(lines 1139 1141) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L1007(lines 1007 1009) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L875(lines 875 886) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L809(lines 809 824) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L479(lines 479 481) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L347(lines 347 358) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L215(lines 215 226) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L149(lines 149 164) no Hoare annotation was computed. [2020-10-14 07:23:07,831 INFO L268 CegarLoopResult]: For program point L83(lines 83 94) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L1075(lines 1075 1077) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L943(lines 943 945) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L811(lines 811 822) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L745(lines 745 760) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L415(lines 415 417) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L283(lines 283 285) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L151(lines 151 162) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L879(lines 879 881) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L747(lines 747 758) no Hoare annotation was computed. [2020-10-14 07:23:07,832 INFO L268 CegarLoopResult]: For program point L681(lines 681 696) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L351(lines 351 353) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L219(lines 219 221) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L87(lines 87 89) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L815(lines 815 817) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L683(lines 683 694) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L617(lines 617 632) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L155(lines 155 157) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L1213(lines 1213 1228) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L751(lines 751 753) no Hoare annotation was computed. [2020-10-14 07:23:07,833 INFO L268 CegarLoopResult]: For program point L619(lines 619 630) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L553(lines 553 568) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L1215(lines 1215 1226) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L1149(lines 1149 1164) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L1017(lines 1017 1032) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L687(lines 687 689) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L555(lines 555 566) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L489(lines 489 504) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L1151(lines 1151 1162) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L1085(lines 1085 1100) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L1019(lines 1019 1030) no Hoare annotation was computed. [2020-10-14 07:23:07,834 INFO L268 CegarLoopResult]: For program point L953(lines 953 968) no Hoare annotation was computed. [2020-10-14 07:23:07,835 INFO L268 CegarLoopResult]: For program point L623(lines 623 625) no Hoare annotation was computed. [2020-10-14 07:23:07,835 INFO L268 CegarLoopResult]: For program point L491(lines 491 502) no Hoare annotation was computed. [2020-10-14 07:23:07,835 INFO L268 CegarLoopResult]: For program point L425(lines 425 440) no Hoare annotation was computed. [2020-10-14 07:23:07,835 INFO L268 CegarLoopResult]: For program point L293(lines 293 308) no Hoare annotation was computed. [2020-10-14 07:23:07,835 INFO L268 CegarLoopResult]: For program point L1219(lines 1219 1221) no Hoare annotation was computed. [2020-10-14 07:23:07,835 INFO L268 CegarLoopResult]: For program point L1087(lines 1087 1098) no Hoare annotation was computed. [2020-10-14 07:23:07,835 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 1255) the Hoare annotation is: true [2020-10-14 07:23:07,835 INFO L268 CegarLoopResult]: For program point L955(lines 955 966) no Hoare annotation was computed. [2020-10-14 07:23:07,835 INFO L268 CegarLoopResult]: For program point L889(lines 889 904) no Hoare annotation was computed. [2020-10-14 07:23:07,836 INFO L268 CegarLoopResult]: For program point L559(lines 559 561) no Hoare annotation was computed. [2020-10-14 07:23:07,836 INFO L268 CegarLoopResult]: For program point L427(lines 427 438) no Hoare annotation was computed. [2020-10-14 07:23:07,836 INFO L268 CegarLoopResult]: For program point L361(lines 361 376) no Hoare annotation was computed. [2020-10-14 07:23:07,836 INFO L268 CegarLoopResult]: For program point L295(lines 295 306) no Hoare annotation was computed. [2020-10-14 07:23:07,836 INFO L268 CegarLoopResult]: For program point L229(lines 229 244) no Hoare annotation was computed. [2020-10-14 07:23:07,836 INFO L268 CegarLoopResult]: For program point L97(lines 97 112) no Hoare annotation was computed. [2020-10-14 07:23:07,836 INFO L268 CegarLoopResult]: For program point L1155(lines 1155 1157) no Hoare annotation was computed. [2020-10-14 07:23:07,836 INFO L268 CegarLoopResult]: For program point L1023(lines 1023 1025) no Hoare annotation was computed. [2020-10-14 07:23:07,836 INFO L264 CegarLoopResult]: At program point L32-2(lines 32 1250) the Hoare annotation is: (let ((.cse0 (<= 1 main_~this_m_delta~0)) (.cse2 (<= 1 main_~this_m_conn~0)) (.cse1 (= main_~this_m_conn_data_listener~0 0))) (or (and (<= 2 main_~q~0) (= main_~this_m_conn~0 0) .cse0 .cse1 (<= main_~q~0 2)) (and (<= main_~q~0 0) .cse0 .cse1) (and (<= 1 main_~this_m_conn_data_listener~0) (<= 3 main_~q~0) .cse0 .cse2 (<= main_~q~0 3)) (and (<= 4 main_~q~0) .cse0 .cse2 .cse1))) [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L32-3(lines 32 1250) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L891(lines 891 902) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L825(lines 825 840) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L495(lines 495 497) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L363(lines 363 374) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L231(lines 231 242) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L165(lines 165 180) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L99(lines 99 110) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L1091(lines 1091 1093) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L959(lines 959 961) no Hoare annotation was computed. [2020-10-14 07:23:07,837 INFO L268 CegarLoopResult]: For program point L827(lines 827 838) no Hoare annotation was computed. [2020-10-14 07:23:07,838 INFO L268 CegarLoopResult]: For program point L761(lines 761 776) no Hoare annotation was computed. [2020-10-14 07:23:07,838 INFO L268 CegarLoopResult]: For program point L431(lines 431 433) no Hoare annotation was computed. [2020-10-14 07:23:07,838 INFO L268 CegarLoopResult]: For program point L299(lines 299 301) no Hoare annotation was computed. [2020-10-14 07:23:07,838 INFO L268 CegarLoopResult]: For program point L167(lines 167 178) no Hoare annotation was computed. [2020-10-14 07:23:07,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:23:07 BoogieIcfgContainer [2020-10-14 07:23:07,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 07:23:07,882 INFO L168 Benchmark]: Toolchain (without parser) took 13497.25 ms. Allocated memory was 147.3 MB in the beginning and 428.3 MB in the end (delta: 281.0 MB). Free memory was 93.7 MB in the beginning and 185.2 MB in the end (delta: -91.5 MB). Peak memory consumption was 189.5 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:07,884 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 07:23:07,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1370.00 ms. Allocated memory was 147.3 MB in the beginning and 234.4 MB in the end (delta: 87.0 MB). Free memory was 93.7 MB in the beginning and 117.5 MB in the end (delta: -23.7 MB). Peak memory consumption was 78.7 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:07,886 INFO L168 Benchmark]: Boogie Preprocessor took 278.67 ms. Allocated memory is still 234.4 MB. Free memory was 117.5 MB in the beginning and 104.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:07,888 INFO L168 Benchmark]: RCFGBuilder took 1880.61 ms. Allocated memory was 234.4 MB in the beginning and 255.3 MB in the end (delta: 21.0 MB). Free memory was 104.0 MB in the beginning and 142.0 MB in the end (delta: -38.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:07,892 INFO L168 Benchmark]: TraceAbstraction took 9960.51 ms. Allocated memory was 255.3 MB in the beginning and 428.3 MB in the end (delta: 173.0 MB). Free memory was 142.0 MB in the beginning and 185.2 MB in the end (delta: -43.2 MB). Peak memory consumption was 129.8 MB. Max. memory is 7.1 GB. [2020-10-14 07:23:07,898 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1370.00 ms. Allocated memory was 147.3 MB in the beginning and 234.4 MB in the end (delta: 87.0 MB). Free memory was 93.7 MB in the beginning and 117.5 MB in the end (delta: -23.7 MB). Peak memory consumption was 78.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 278.67 ms. Allocated memory is still 234.4 MB. Free memory was 117.5 MB in the beginning and 104.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1880.61 ms. Allocated memory was 234.4 MB in the beginning and 255.3 MB in the end (delta: 21.0 MB). Free memory was 104.0 MB in the beginning and 142.0 MB in the end (delta: -38.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9960.51 ms. Allocated memory was 255.3 MB in the beginning and 428.3 MB in the end (delta: 173.0 MB). Free memory was 142.0 MB in the beginning and 185.2 MB in the end (delta: -43.2 MB). Peak memory consumption was 129.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1254]: 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: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((2 <= q && this_m_conn == 0) && 1 <= this_m_delta) && this_m_conn_data_listener == 0) && q <= 2) || ((q <= 0 && 1 <= this_m_delta) && this_m_conn_data_listener == 0)) || ((((1 <= this_m_conn_data_listener && 3 <= q) && 1 <= this_m_delta) && 1 <= this_m_conn) && q <= 3)) || (((4 <= q && 1 <= this_m_delta) && 1 <= this_m_conn) && this_m_conn_data_listener == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((2 <= q && this_m_conn == 0) && 1 <= this_m_delta) && this_m_conn_data_listener == 0) && q <= 2) || ((q <= 0 && 1 <= this_m_delta) && this_m_conn_data_listener == 0)) || ((((1 <= this_m_conn_data_listener && 3 <= q) && 1 <= this_m_delta) && 1 <= this_m_conn) && q <= 3)) || (((4 <= q && 1 <= this_m_delta) && 1 <= this_m_conn) && this_m_conn_data_listener == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 242 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4099 SDtfs, 6753 SDslu, 80 SDs, 0 SdLazy, 2274 SolverSat, 549 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 43 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 15 NumberOfFragments, 144 HoareAnnotationTreeSize, 7 FomulaSimplifications, 126 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 279 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 333 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 321 ConstructedInterpolants, 0 QuantifiedInterpolants, 23446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 51/51 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...