/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/Problem02_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:52,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:52,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:52,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:52,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:52,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:52,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:52,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:52,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:52,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:52,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:52,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:52,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:52,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:52,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:52,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:52,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:52,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:52,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:52,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:52,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:52,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:53,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:53,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:53,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:53,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:53,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:53,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:53,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:53,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:53,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:53,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:53,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:53,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:53,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:53,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:53,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:53,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:53,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:53,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:53,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:53,038 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 04:28:53,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:53,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:53,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:53,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:53,075 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:53,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:53,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:53,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:53,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:53,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:53,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:53,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:53,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:53,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:53,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:53,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:53,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:53,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:53,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:53,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:53,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:53,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:53,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:53,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:53,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:53,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:53,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:53,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:53,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:53,080 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 04:28:53,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:53,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:53,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:53,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:53,583 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:53,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 04:28:53,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/774c1f2b6/bb192e2bb16c48e9b031e44b22ccefbf/FLAG184b85a62 [2020-09-25 04:28:54,288 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:54,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 04:28:54,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/774c1f2b6/bb192e2bb16c48e9b031e44b22ccefbf/FLAG184b85a62 [2020-09-25 04:28:54,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/774c1f2b6/bb192e2bb16c48e9b031e44b22ccefbf [2020-09-25 04:28:54,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:54,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:54,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:54,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:54,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:54,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:54" (1/1) ... [2020-09-25 04:28:54,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54, skipping insertion in model container [2020-09-25 04:28:54,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:54" (1/1) ... [2020-09-25 04:28:54,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:54,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:55,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:55,105 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:55,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:55,350 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:55,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55 WrapperNode [2020-09-25 04:28:55,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:55,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:55,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:55,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:55,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55" (1/1) ... [2020-09-25 04:28:55,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55" (1/1) ... [2020-09-25 04:28:55,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55" (1/1) ... [2020-09-25 04:28:55,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55" (1/1) ... [2020-09-25 04:28:55,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55" (1/1) ... [2020-09-25 04:28:55,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55" (1/1) ... [2020-09-25 04:28:55,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55" (1/1) ... [2020-09-25 04:28:55,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:55,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:55,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:55,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:55,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:56,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:56,933 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:56,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:56 BoogieIcfgContainer [2020-09-25 04:28:56,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:56,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:56,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:56,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:56,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:54" (1/3) ... [2020-09-25 04:28:56,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:56, skipping insertion in model container [2020-09-25 04:28:56,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:55" (2/3) ... [2020-09-25 04:28:56,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:56, skipping insertion in model container [2020-09-25 04:28:56,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:56" (3/3) ... [2020-09-25 04:28:56,965 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 04:28:56,977 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:56,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:57,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:57,047 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:57,048 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:57,048 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:57,048 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:57,048 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:57,048 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:57,048 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:57,048 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 04:28:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:57,102 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] [2020-09-25 04:28:57,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:57,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:57,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 04:28:57,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:57,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 04:28:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:58,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:02,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:02,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:02,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 04:29:02,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:29:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 04:29:02,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:02,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:29:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 04:29:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:29:02,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:02,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:02,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:02,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 04:29:02,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:02,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:29:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:02,823 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 04:29:02,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 04:29:02,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:02,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:29:02,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627795829] [2020-09-25 04:29:02,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:29:02,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:02,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:29:02,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:29:02,856 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:29:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:05,234 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 04:29:05,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:29:05,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 04:29:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:05,272 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 04:29:05,273 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 04:29:05,283 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 04:29:05,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 04:29:05,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 04:29:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 04:29:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 04:29:05,398 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 131 [2020-09-25 04:29:05,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:05,399 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 04:29:05,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:29:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 04:29:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 04:29:05,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:05,412 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:29:05,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:05,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1110069102, now seen corresponding path program 1 times [2020-09-25 04:29:05,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:05,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669363541] [2020-09-25 04:29:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:05,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:08,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:08,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:10,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 04:29:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:29:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:29:10,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:10,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:29:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 04:29:10,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:10,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:10,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:10,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:10,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:29:10,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:10,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:10,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:10,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:10,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:29:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:10,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669363541] [2020-09-25 04:29:10,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:10,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:10,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005303301] [2020-09-25 04:29:10,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:10,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:10,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:10,715 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 04:29:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:12,222 INFO L93 Difference]: Finished difference Result 1622 states and 2084 transitions. [2020-09-25 04:29:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:12,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 04:29:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:12,230 INFO L225 Difference]: With dead ends: 1622 [2020-09-25 04:29:12,231 INFO L226 Difference]: Without dead ends: 979 [2020-09-25 04:29:12,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 04:29:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-25 04:29:12,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 967. [2020-09-25 04:29:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 04:29:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 04:29:12,276 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 149 [2020-09-25 04:29:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:12,277 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 04:29:12,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:12,278 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 04:29:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 04:29:12,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:12,288 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:12,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:12,288 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:12,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:12,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1319537639, now seen corresponding path program 1 times [2020-09-25 04:29:12,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:12,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047418446] [2020-09-25 04:29:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:12,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:15,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:17,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 04:29:17,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 04:29:17,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:17,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:29:17,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:29:17,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:17,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:17,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:17,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:17,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:29:17,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:17,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:29:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:17,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:29:17,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 04:29:17,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:17,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:29:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:17,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047418446] [2020-09-25 04:29:17,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:17,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:29:17,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184932276] [2020-09-25 04:29:17,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:17,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:17,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:17,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:17,730 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 7 states. [2020-09-25 04:29:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:20,512 INFO L93 Difference]: Finished difference Result 2781 states and 3659 transitions. [2020-09-25 04:29:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:20,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 04:29:20,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:20,528 INFO L225 Difference]: With dead ends: 2781 [2020-09-25 04:29:20,529 INFO L226 Difference]: Without dead ends: 1836 [2020-09-25 04:29:20,536 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 04:29:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2020-09-25 04:29:20,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1731. [2020-09-25 04:29:20,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2020-09-25 04:29:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2202 transitions. [2020-09-25 04:29:20,613 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2202 transitions. Word has length 175 [2020-09-25 04:29:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:20,614 INFO L479 AbstractCegarLoop]: Abstraction has 1731 states and 2202 transitions. [2020-09-25 04:29:20,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2202 transitions. [2020-09-25 04:29:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 04:29:20,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:20,633 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:20,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:20,633 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:20,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:20,634 INFO L82 PathProgramCache]: Analyzing trace with hash 335216911, now seen corresponding path program 1 times [2020-09-25 04:29:20,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:20,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505137533] [2020-09-25 04:29:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:25,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 04:29:25,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:29:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:29:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:25,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:29:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:29:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:25,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:25,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:25,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:29:25,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:25,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:25,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:25,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:25,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:29:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:25,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:29:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:25,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:29:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:25,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:29:25,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:25,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 04:29:25,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:25,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:29:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:26,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505137533] [2020-09-25 04:29:26,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:26,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:26,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112767812] [2020-09-25 04:29:26,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:26,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:26,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:26,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:26,094 INFO L87 Difference]: Start difference. First operand 1731 states and 2202 transitions. Second operand 7 states. [2020-09-25 04:29:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:29,534 INFO L93 Difference]: Finished difference Result 5126 states and 7172 transitions. [2020-09-25 04:29:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:29,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-09-25 04:29:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:29,561 INFO L225 Difference]: With dead ends: 5126 [2020-09-25 04:29:29,561 INFO L226 Difference]: Without dead ends: 3417 [2020-09-25 04:29:29,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:29:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2020-09-25 04:29:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3179. [2020-09-25 04:29:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-09-25 04:29:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 3978 transitions. [2020-09-25 04:29:29,690 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 3978 transitions. Word has length 187 [2020-09-25 04:29:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:29,691 INFO L479 AbstractCegarLoop]: Abstraction has 3179 states and 3978 transitions. [2020-09-25 04:29:29,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 3978 transitions. [2020-09-25 04:29:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 04:29:29,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:29,705 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:29,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:29,706 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:29,706 INFO L82 PathProgramCache]: Analyzing trace with hash 897918273, now seen corresponding path program 1 times [2020-09-25 04:29:29,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:29,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786813358] [2020-09-25 04:29:29,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:34,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 04:29:34,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:29:34,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:34,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:34,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 04:29:34,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 04:29:34,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:34,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:34,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:34,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:34,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:29:34,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:34,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:34,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:34,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:34,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:34,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:34,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:34,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:34,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 04:29:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:34,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:34,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:29:34,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:34,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:29:34,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:34,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:29:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 04:29:35,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786813358] [2020-09-25 04:29:35,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:35,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:35,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949218352] [2020-09-25 04:29:35,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:35,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:35,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:35,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:35,039 INFO L87 Difference]: Start difference. First operand 3179 states and 3978 transitions. Second operand 5 states. [2020-09-25 04:29:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:37,025 INFO L93 Difference]: Finished difference Result 7337 states and 9353 transitions. [2020-09-25 04:29:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:37,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 04:29:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:37,048 INFO L225 Difference]: With dead ends: 7337 [2020-09-25 04:29:37,048 INFO L226 Difference]: Without dead ends: 4362 [2020-09-25 04:29:37,058 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 04:29:37,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2020-09-25 04:29:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4238. [2020-09-25 04:29:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4238 states. [2020-09-25 04:29:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5390 transitions. [2020-09-25 04:29:37,169 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5390 transitions. Word has length 191 [2020-09-25 04:29:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:37,169 INFO L479 AbstractCegarLoop]: Abstraction has 4238 states and 5390 transitions. [2020-09-25 04:29:37,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5390 transitions. [2020-09-25 04:29:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 04:29:37,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:37,185 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:37,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:29:37,185 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:37,185 INFO L82 PathProgramCache]: Analyzing trace with hash 955456564, now seen corresponding path program 1 times [2020-09-25 04:29:37,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:37,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452891425] [2020-09-25 04:29:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:37,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 04:29:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:29:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-25 04:29:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:29:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:42,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:29:42,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:42,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:29:42,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:42,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:42,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:42,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:42,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:42,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:29:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:42,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:42,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:42,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:42,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:29:42,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:42,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:29:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:29:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 04:29:42,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452891425] [2020-09-25 04:29:42,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:42,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:29:42,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068932063] [2020-09-25 04:29:42,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:42,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:42,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:42,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:42,400 INFO L87 Difference]: Start difference. First operand 4238 states and 5390 transitions. Second operand 5 states.