/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:58,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:58,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:58,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:58,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:58,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:58,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:58,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:58,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:58,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:58,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:58,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:58,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:58,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:59,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:59,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:59,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:59,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:59,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:59,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:59,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:59,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:59,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:59,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:59,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:59,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:59,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:59,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:59,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:59,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:59,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:59,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:59,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:59,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:59,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:59,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:59,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:59,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:59,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:59,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:59,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:59,043 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 04:24:59,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:59,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:59,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:59,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:59,095 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:59,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:59,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:59,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:59,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:59,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:59,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:59,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:59,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:59,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:59,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:59,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:59,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:59,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:59,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:59,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:59,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:59,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:59,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:59,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:59,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:59,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:59,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:59,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:59,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:59,102 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:59,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:59,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:59,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:59,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:59,584 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:59,585 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 04:24:59,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba97e929b/705bb7d98a014fbaad1938f438b7040f/FLAG23738e61e [2020-09-25 04:25:00,308 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:00,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 04:25:00,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba97e929b/705bb7d98a014fbaad1938f438b7040f/FLAG23738e61e [2020-09-25 04:25:00,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba97e929b/705bb7d98a014fbaad1938f438b7040f [2020-09-25 04:25:00,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:00,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:00,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:00,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:00,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:00,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:00" (1/1) ... [2020-09-25 04:25:00,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:00, skipping insertion in model container [2020-09-25 04:25:00,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:00" (1/1) ... [2020-09-25 04:25:00,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:00,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:01,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:01,072 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:01,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:01,283 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:01,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01 WrapperNode [2020-09-25 04:25:01,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:01,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:01,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:01,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:01,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:01,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:01,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:01,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:01,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:01,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:01,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:01,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:01,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:01,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:01,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:01,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (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 04:25:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:02,905 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:02,906 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:02,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:02 BoogieIcfgContainer [2020-09-25 04:25:02,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:02,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:02,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:02,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:02,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:00" (1/3) ... [2020-09-25 04:25:02,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:02, skipping insertion in model container [2020-09-25 04:25:02,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (2/3) ... [2020-09-25 04:25:02,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:02, skipping insertion in model container [2020-09-25 04:25:02,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:02" (3/3) ... [2020-09-25 04:25:02,937 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2020-09-25 04:25:02,952 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:02,964 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:02,988 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:03,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:03,023 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:03,023 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:03,023 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:03,023 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:03,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:03,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:03,024 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 04:25:03,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:03,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:03,102 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:03,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1844135333, now seen corresponding path program 1 times [2020-09-25 04:25:03,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:03,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-25 04:25:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:03,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:08,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 04:25:08,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:25:08,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:25:08,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:08,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:08,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:08,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:08,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 04:25:08,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:25:08,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:08,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:08,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:25:08,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:08,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:25:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:08,868 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 04:25:08,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-25 04:25:08,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:08,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:08,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401315792] [2020-09-25 04:25:08,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:08,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:08,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:08,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:08,907 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:25:11,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:11,127 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:25:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:25:11,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 04:25:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:11,182 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:25:11,182 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:25:11,192 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 04:25:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:25:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:25:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:25:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:25:11,293 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 155 [2020-09-25 04:25:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:11,294 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:25:11,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:25:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:25:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 04:25:11,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:11,301 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:11,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:11,302 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:11,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1778459773, now seen corresponding path program 1 times [2020-09-25 04:25:11,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:11,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472182051] [2020-09-25 04:25:11,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:14,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:16,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 04:25:16,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:25:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 04:25:16,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:16,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:25:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:25:16,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:25:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:16,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:16,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:25:16,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:16,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:16,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:16,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:16,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 04:25:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:16,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:16,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:16,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:25:16,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:16,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:16,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:16,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:16,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472182051] [2020-09-25 04:25:16,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:16,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:25:16,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289844059] [2020-09-25 04:25:16,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:16,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:16,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:16,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:16,787 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 04:25:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:19,260 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 04:25:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:25:19,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 04:25:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:19,269 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 04:25:19,269 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 04:25:19,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 04:25:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 04:25:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 04:25:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1108 transitions. [2020-09-25 04:25:19,325 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1108 transitions. Word has length 176 [2020-09-25 04:25:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:19,328 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1108 transitions. [2020-09-25 04:25:19,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:19,328 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1108 transitions. [2020-09-25 04:25:19,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 04:25:19,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:19,342 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:19,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:25:19,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:19,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1702754775, now seen corresponding path program 1 times [2020-09-25 04:25:19,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:19,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180330056] [2020-09-25 04:25:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:24,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 04:25:24,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:25:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:25:24,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:24,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:25:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:24,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:24,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:24,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:24,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:25:24,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:24,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:24,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:24,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:25:24,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 04:25:24,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:24,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:25:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:24,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180330056] [2020-09-25 04:25:24,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:24,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:25:24,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691088625] [2020-09-25 04:25:24,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:24,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:24,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:24,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:24,639 INFO L87 Difference]: Start difference. First operand 901 states and 1108 transitions. Second operand 7 states. [2020-09-25 04:25:26,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:26,920 INFO L93 Difference]: Finished difference Result 2569 states and 3321 transitions. [2020-09-25 04:25:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:26,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-09-25 04:25:26,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:26,940 INFO L225 Difference]: With dead ends: 2569 [2020-09-25 04:25:26,945 INFO L226 Difference]: Without dead ends: 1692 [2020-09-25 04:25:26,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 04:25:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2020-09-25 04:25:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1575. [2020-09-25 04:25:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-09-25 04:25:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1951 transitions. [2020-09-25 04:25:27,022 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1951 transitions. Word has length 177 [2020-09-25 04:25:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:27,023 INFO L479 AbstractCegarLoop]: Abstraction has 1575 states and 1951 transitions. [2020-09-25 04:25:27,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1951 transitions. [2020-09-25 04:25:27,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 04:25:27,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:27,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:27,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:27,033 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:27,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1433668401, now seen corresponding path program 1 times [2020-09-25 04:25:27,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:27,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120247723] [2020-09-25 04:25:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:32,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 04:25:32,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:32,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 04:25:32,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:32,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:25:32,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:32,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:32,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:32,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:32,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:25:32,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:32,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:32,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:32,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:32,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:25:32,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:32,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:25:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:32,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:32,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:32,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:32,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 04:25:32,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:32,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:25:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:32,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120247723] [2020-09-25 04:25:32,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:32,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:32,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801305420] [2020-09-25 04:25:32,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:32,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:32,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:32,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:32,524 INFO L87 Difference]: Start difference. First operand 1575 states and 1951 transitions. Second operand 7 states. [2020-09-25 04:25:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:34,946 INFO L93 Difference]: Finished difference Result 3695 states and 4768 transitions. [2020-09-25 04:25:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:34,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-09-25 04:25:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:34,964 INFO L225 Difference]: With dead ends: 3695 [2020-09-25 04:25:34,964 INFO L226 Difference]: Without dead ends: 2144 [2020-09-25 04:25:34,972 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 04:25:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-09-25 04:25:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2047. [2020-09-25 04:25:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2047 states. [2020-09-25 04:25:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 2511 transitions. [2020-09-25 04:25:35,058 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 2511 transitions. Word has length 207 [2020-09-25 04:25:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:35,060 INFO L479 AbstractCegarLoop]: Abstraction has 2047 states and 2511 transitions. [2020-09-25 04:25:35,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 2511 transitions. [2020-09-25 04:25:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 04:25:35,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:35,072 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:35,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:25:35,072 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:35,073 INFO L82 PathProgramCache]: Analyzing trace with hash 936057003, now seen corresponding path program 1 times [2020-09-25 04:25:35,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:35,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203675973] [2020-09-25 04:25:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 04:25:40,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:25:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5249 [2020-09-25 04:25:40,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 04:25:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:40,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:40,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:40,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:25:40,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:40,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:40,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:25:40,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:40,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:25:40,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:25:40,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:25:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 04:25:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:40,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:40,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 04:25:40,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:40,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:25:40,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203675973] [2020-09-25 04:25:40,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:40,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:40,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530303862] [2020-09-25 04:25:40,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:40,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:40,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:40,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:40,767 INFO L87 Difference]: Start difference. First operand 2047 states and 2511 transitions. Second operand 7 states. [2020-09-25 04:25:43,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:43,190 INFO L93 Difference]: Finished difference Result 5366 states and 6731 transitions. [2020-09-25 04:25:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:43,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-25 04:25:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:43,210 INFO L225 Difference]: With dead ends: 5366 [2020-09-25 04:25:43,210 INFO L226 Difference]: Without dead ends: 3343 [2020-09-25 04:25:43,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 04:25:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2020-09-25 04:25:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2627. [2020-09-25 04:25:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2627 states. [2020-09-25 04:25:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3290 transitions. [2020-09-25 04:25:43,305 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3290 transitions. Word has length 214 [2020-09-25 04:25:43,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:43,305 INFO L479 AbstractCegarLoop]: Abstraction has 2627 states and 3290 transitions. [2020-09-25 04:25:43,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3290 transitions. [2020-09-25 04:25:43,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-25 04:25:43,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:43,319 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:43,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:43,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:43,320 INFO L82 PathProgramCache]: Analyzing trace with hash 134521756, now seen corresponding path program 1 times [2020-09-25 04:25:43,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:43,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059956846] [2020-09-25 04:25:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking...