/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:22,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:22,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:22,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:22,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:22,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:22,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:22,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:22,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:22,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:22,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:22,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:22,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:22,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:22,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:22,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:22,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:22,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:22,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:22,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:22,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:22,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:22,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:22,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:22,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:22,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:22,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:22,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:22,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:22,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:22,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:22,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:22,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:22,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:22,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:22,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:23,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:23,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:23,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:23,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:23,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:23,003 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 [2020-09-25 12:21:23,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:23,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:23,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:23,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:23,031 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:23,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:23,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:23,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:23,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:23,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:23,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:23,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:23,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:23,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:23,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:23,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:23,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:23,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:23,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:23,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:23,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:23,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:23,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:23,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:23,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:23,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:23,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:23,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:23,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:23,036 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:21:23,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:23,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:23,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:23,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:23,554 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:23,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 12:21:23,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f2c62343/035087b02a9d4f518cc7ae28893c3420/FLAG21483bd0b [2020-09-25 12:21:24,309 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:24,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 12:21:24,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f2c62343/035087b02a9d4f518cc7ae28893c3420/FLAG21483bd0b [2020-09-25 12:21:24,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f2c62343/035087b02a9d4f518cc7ae28893c3420 [2020-09-25 12:21:24,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:24,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:24,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:24,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:24,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:24,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:24" (1/1) ... [2020-09-25 12:21:24,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249e641f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:24, skipping insertion in model container [2020-09-25 12:21:24,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:24" (1/1) ... [2020-09-25 12:21:24,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:24,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:25,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:25,320 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:25,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:25,441 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:25,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25 WrapperNode [2020-09-25 12:21:25,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:25,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:25,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:25,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:25,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25" (1/1) ... [2020-09-25 12:21:25,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25" (1/1) ... [2020-09-25 12:21:25,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25" (1/1) ... [2020-09-25 12:21:25,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25" (1/1) ... [2020-09-25 12:21:25,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25" (1/1) ... [2020-09-25 12:21:25,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25" (1/1) ... [2020-09-25 12:21:25,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25" (1/1) ... [2020-09-25 12:21:25,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:25,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:25,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:25,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:25,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25" (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 [2020-09-25 12:21:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:27,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:27,047 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:27,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:27 BoogieIcfgContainer [2020-09-25 12:21:27,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:27,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:27,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:27,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:27,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:24" (1/3) ... [2020-09-25 12:21:27,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4144d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:27, skipping insertion in model container [2020-09-25 12:21:27,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:25" (2/3) ... [2020-09-25 12:21:27,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4144d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:27, skipping insertion in model container [2020-09-25 12:21:27,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:27" (3/3) ... [2020-09-25 12:21:27,068 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-09-25 12:21:27,080 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:27,091 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:27,114 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:27,148 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:27,149 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:27,149 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:27,149 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:27,149 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:27,149 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:27,150 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:27,150 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:27,184 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:27,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 12:21:27,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:27,205 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:27,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:27,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:27,215 INFO L82 PathProgramCache]: Analyzing trace with hash 628562263, now seen corresponding path program 1 times [2020-09-25 12:21:27,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:27,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473995731] [2020-09-25 12:21:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:27,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:29,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 12:21:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:21:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:21:32,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:32,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:21:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:21:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:21:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:32,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:32,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:32,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 12:21:32,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:32,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:21:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:32,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473995731] [2020-09-25 12:21:32,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:32,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:32,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841041457] [2020-09-25 12:21:32,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:32,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:32,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:32,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:32,905 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:35,534 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 12:21:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:35,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 12:21:35,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:35,577 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 12:21:35,577 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 12:21:35,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 12:21:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 12:21:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 12:21:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 12:21:35,766 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 114 [2020-09-25 12:21:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:35,767 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 12:21:35,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 12:21:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 12:21:35,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:35,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:35,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:35,790 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:35,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:35,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1104563352, now seen corresponding path program 1 times [2020-09-25 12:21:35,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:35,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870924670] [2020-09-25 12:21:35,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:38,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 12:21:38,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:21:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-09-25 12:21:38,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:38,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 12:21:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 12:21:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:21:38,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:38,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:38,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:21:38,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:38,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:38,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:38,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:38,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:38,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:21:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:38,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:21:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:38,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870924670] [2020-09-25 12:21:38,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:38,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:38,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612447178] [2020-09-25 12:21:38,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:38,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:38,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:38,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:38,726 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 12:21:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:40,757 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 12:21:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:40,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 12:21:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:40,764 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 12:21:40,765 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 12:21:40,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 12:21:40,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 12:21:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 12:21:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 12:21:40,805 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 135 [2020-09-25 12:21:40,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:40,805 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 12:21:40,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:40,805 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 12:21:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 12:21:40,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:40,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:40,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:40,811 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:40,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1460590075, now seen corresponding path program 1 times [2020-09-25 12:21:40,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:40,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516617425] [2020-09-25 12:21:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:45,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 12:21:45,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:21:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:21:45,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:45,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:21:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 12:21:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:21:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:46,508 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-09-25 12:21:46,670 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-09-25 12:21:46,814 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-09-25 12:21:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:47,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:21:47,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:47,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:21:47,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:47,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:47,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:21:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:21:47,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:21:47,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:21:47,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:21:47,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516617425] [2020-09-25 12:21:47,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:47,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:21:47,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819659441] [2020-09-25 12:21:47,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:21:47,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:47,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:21:47,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:21:47,819 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 16 states. [2020-09-25 12:21:48,511 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-09-25 12:21:48,926 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2020-09-25 12:21:49,524 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-09-25 12:21:50,535 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 12:21:50,927 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-09-25 12:21:51,511 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-09-25 12:21:51,993 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2020-09-25 12:21:52,313 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-09-25 12:21:52,708 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 12:21:53,000 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 12:21:53,662 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 12:21:53,855 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-09-25 12:21:54,167 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-09-25 12:21:54,497 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-09-25 12:21:54,725 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-09-25 12:21:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:55,098 INFO L93 Difference]: Finished difference Result 2258 states and 2894 transitions. [2020-09-25 12:21:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 12:21:55,099 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-09-25 12:21:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:55,112 INFO L225 Difference]: With dead ends: 2258 [2020-09-25 12:21:55,113 INFO L226 Difference]: Without dead ends: 1332 [2020-09-25 12:21:55,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=458, Invalid=948, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 12:21:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2020-09-25 12:21:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1114. [2020-09-25 12:21:55,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-09-25 12:21:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1322 transitions. [2020-09-25 12:21:55,180 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1322 transitions. Word has length 152 [2020-09-25 12:21:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:55,182 INFO L479 AbstractCegarLoop]: Abstraction has 1114 states and 1322 transitions. [2020-09-25 12:21:55,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:21:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1322 transitions. [2020-09-25 12:21:55,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:21:55,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:55,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:55,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:55,191 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:55,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1264932115, now seen corresponding path program 1 times [2020-09-25 12:21:55,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:55,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590176701] [2020-09-25 12:21:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:56,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:56,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:00,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 12:22:00,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:22:00,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:22:00,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:00,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:00,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 12:22:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 12:22:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:00,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:00,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:00,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:00,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:00,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:22:00,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:00,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:00,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:00,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:00,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:00,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:22:00,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:00,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:00,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:22:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:00,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:00,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:00,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 12:22:00,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:00,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:22:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 12:22:00,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590176701] [2020-09-25 12:22:00,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:00,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:00,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897005921] [2020-09-25 12:22:00,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:00,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:00,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:00,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:00,577 INFO L87 Difference]: Start difference. First operand 1114 states and 1322 transitions. Second operand 5 states. [2020-09-25 12:22:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:02,611 INFO L93 Difference]: Finished difference Result 2879 states and 3532 transitions. [2020-09-25 12:22:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:02,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 12:22:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:02,622 INFO L225 Difference]: With dead ends: 2879 [2020-09-25 12:22:02,623 INFO L226 Difference]: Without dead ends: 1789 [2020-09-25 12:22:02,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-09-25 12:22:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1402. [2020-09-25 12:22:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1402 states. [2020-09-25 12:22:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1735 transitions. [2020-09-25 12:22:02,680 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1735 transitions. Word has length 166 [2020-09-25 12:22:02,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:02,681 INFO L479 AbstractCegarLoop]: Abstraction has 1402 states and 1735 transitions. [2020-09-25 12:22:02,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1735 transitions. [2020-09-25 12:22:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 12:22:02,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:02,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:02,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:02,689 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:02,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:02,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1826040530, now seen corresponding path program 1 times [2020-09-25 12:22:02,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:02,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318875620] [2020-09-25 12:22:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:07,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 12:22:07,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:22:07,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:07,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 12:22:07,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 12:22:07,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:07,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:07,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:07,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:07,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:07,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:07,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:07,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:07,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:07,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:07,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:07,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:22:07,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:07,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:22:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:07,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:22:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 12:22:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 12:22:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:07,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:22:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:22:08,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318875620] [2020-09-25 12:22:08,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:08,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:22:08,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400825900] [2020-09-25 12:22:08,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:22:08,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:08,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:22:08,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:22:08,058 INFO L87 Difference]: Start difference. First operand 1402 states and 1735 transitions. Second operand 7 states. [2020-09-25 12:22:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:10,529 INFO L93 Difference]: Finished difference Result 3868 states and 5029 transitions. [2020-09-25 12:22:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:22:10,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-25 12:22:10,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:10,555 INFO L225 Difference]: With dead ends: 3868 [2020-09-25 12:22:10,556 INFO L226 Difference]: Without dead ends: 2490 [2020-09-25 12:22:10,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:22:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2020-09-25 12:22:10,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2350. [2020-09-25 12:22:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2020-09-25 12:22:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 2972 transitions. [2020-09-25 12:22:10,675 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 2972 transitions. Word has length 196 [2020-09-25 12:22:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:10,676 INFO L479 AbstractCegarLoop]: Abstraction has 2350 states and 2972 transitions. [2020-09-25 12:22:10,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:22:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 2972 transitions. [2020-09-25 12:22:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 12:22:10,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:10,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:10,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:22:10,689 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:10,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:10,689 INFO L82 PathProgramCache]: Analyzing trace with hash -513686346, now seen corresponding path program 1 times [2020-09-25 12:22:10,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:10,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253051117] [2020-09-25 12:22:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking...