/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=0.4 --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/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:32,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:32,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:32,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:32,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:32,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:32,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:32,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:32,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:32,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:32,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:32,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:32,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:32,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:32,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:32,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:32,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:32,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:32,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:32,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:33,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:33,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:33,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:33,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:33,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:33,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:33,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:33,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:33,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:33,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:33,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:33,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:33,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:33,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:33,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:33,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:33,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:33,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:33,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:33,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:33,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:33,023 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 05:38:33,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:33,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:33,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:33,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:33,079 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:33,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:33,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:33,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:33,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:33,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:33,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:33,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:33,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:33,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:33,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:33,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:33,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:33,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:33,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:33,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:33,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:33,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:33,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:33,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:33,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:33,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:33,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:33,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:33,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:33,085 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:38:33,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:33,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:33,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:33,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:33,558 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:33,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 05:38:33,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97c692ce1/becf405a1de146e5ae78a00dd656c7c7/FLAG8007afee4 [2020-09-25 05:38:34,305 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:34,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 05:38:34,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97c692ce1/becf405a1de146e5ae78a00dd656c7c7/FLAG8007afee4 [2020-09-25 05:38:34,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97c692ce1/becf405a1de146e5ae78a00dd656c7c7 [2020-09-25 05:38:34,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:34,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:34,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:34,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:34,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:34,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:34" (1/1) ... [2020-09-25 05:38:34,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:34, skipping insertion in model container [2020-09-25 05:38:34,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:34" (1/1) ... [2020-09-25 05:38:34,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:34,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:35,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:35,240 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:35,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:35,367 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:35,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35 WrapperNode [2020-09-25 05:38:35,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:35,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:35,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:35,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:35,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35" (1/1) ... [2020-09-25 05:38:35,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35" (1/1) ... [2020-09-25 05:38:35,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35" (1/1) ... [2020-09-25 05:38:35,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35" (1/1) ... [2020-09-25 05:38:35,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35" (1/1) ... [2020-09-25 05:38:35,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35" (1/1) ... [2020-09-25 05:38:35,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35" (1/1) ... [2020-09-25 05:38:35,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:35,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:35,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:35,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:35,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35" (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 05:38:35,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:35,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:35,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:35,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:37,094 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:37,095 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:37,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:37 BoogieIcfgContainer [2020-09-25 05:38:37,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:37,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:37,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:37,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:37,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:34" (1/3) ... [2020-09-25 05:38:37,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e7fb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:37, skipping insertion in model container [2020-09-25 05:38:37,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:35" (2/3) ... [2020-09-25 05:38:37,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e7fb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:37, skipping insertion in model container [2020-09-25 05:38:37,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:37" (3/3) ... [2020-09-25 05:38:37,114 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 05:38:37,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:37,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:37,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:37,208 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:37,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:37,208 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:37,209 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:37,209 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:37,209 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:37,209 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:37,210 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:37,245 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 05:38:37,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:37,259 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] [2020-09-25 05:38:37,259 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 05:38:37,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:37,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192798223] [2020-09-25 05:38:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:37,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:38,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 05:38:38,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:38:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-09-25 05:38:38,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:38,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:38:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:38:38,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:38,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:38,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:38:38,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:38,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:38,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:38,566 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 05:38:38,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192798223] [2020-09-25 05:38:38,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:38,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:38,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200255545] [2020-09-25 05:38:38,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:38,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:38,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:38,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:38,600 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:40,669 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 05:38:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:40,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 05:38:40,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:40,695 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 05:38:40,695 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 05:38:40,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:40,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 05:38:40,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 05:38:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 05:38:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 05:38:40,801 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 53 [2020-09-25 05:38:40,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:40,802 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 05:38:40,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:40,802 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 05:38:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 05:38:40,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:40,810 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, 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] [2020-09-25 05:38:40,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:40,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 05:38:40,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:40,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510069489] [2020-09-25 05:38:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:40,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:45,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:45,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 05:38:45,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:45,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:38:45,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:45,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:38:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:38:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:46,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:46,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:46,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:38:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:46,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:46,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:46,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:46,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:46,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:46,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 05:38:46,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:46,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:38:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:46,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510069489] [2020-09-25 05:38:46,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:46,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:46,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323461654] [2020-09-25 05:38:46,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:46,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:46,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:46,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:46,323 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 05:38:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:48,077 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 05:38:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:48,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 05:38:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:48,083 INFO L225 Difference]: With dead ends: 698 [2020-09-25 05:38:48,084 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 05:38:48,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:48,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 05:38:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 05:38:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 05:38:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 05:38:48,125 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 132 [2020-09-25 05:38:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:48,126 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 05:38:48,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 05:38:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 05:38:48,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:48,133 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, 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] [2020-09-25 05:38:48,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:48,134 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:48,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:48,134 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 05:38:48,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:48,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347777047] [2020-09-25 05:38:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:50,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:50,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 05:38:50,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738 [2020-09-25 05:38:50,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:50,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:38:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 05:38:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:50,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:51,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:38:51,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:51,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:51,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:51,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:51,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 05:38:51,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:51,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:38:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:51,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347777047] [2020-09-25 05:38:51,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:51,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:51,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871547798] [2020-09-25 05:38:51,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:51,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:51,178 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 5 states. [2020-09-25 05:38:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:53,307 INFO L93 Difference]: Finished difference Result 1700 states and 2254 transitions. [2020-09-25 05:38:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:53,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 05:38:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:53,315 INFO L225 Difference]: With dead ends: 1700 [2020-09-25 05:38:53,315 INFO L226 Difference]: Without dead ends: 1170 [2020-09-25 05:38:53,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-09-25 05:38:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1150. [2020-09-25 05:38:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1150 states. [2020-09-25 05:38:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1437 transitions. [2020-09-25 05:38:53,361 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1437 transitions. Word has length 142 [2020-09-25 05:38:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:53,362 INFO L479 AbstractCegarLoop]: Abstraction has 1150 states and 1437 transitions. [2020-09-25 05:38:53,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1437 transitions. [2020-09-25 05:38:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 05:38:53,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:53,368 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, 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] [2020-09-25 05:38:53,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:53,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:53,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:53,369 INFO L82 PathProgramCache]: Analyzing trace with hash -463375426, now seen corresponding path program 1 times [2020-09-25 05:38:53,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:53,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622851763] [2020-09-25 05:38:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:56,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:58,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 05:38:58,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:58,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4709 [2020-09-25 05:38:58,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:58,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:38:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 05:38:58,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:58,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:58,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:58,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:38:58,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:58,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:38:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:58,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:38:58,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 05:38:58,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:58,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 05:38:58,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:58,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622851763] [2020-09-25 05:38:58,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:58,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:38:58,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250051740] [2020-09-25 05:38:58,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:58,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:58,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:58,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:58,807 INFO L87 Difference]: Start difference. First operand 1150 states and 1437 transitions. Second operand 7 states. [2020-09-25 05:39:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:01,012 INFO L93 Difference]: Finished difference Result 2330 states and 3050 transitions. [2020-09-25 05:39:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:39:01,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-09-25 05:39:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:01,024 INFO L225 Difference]: With dead ends: 2330 [2020-09-25 05:39:01,025 INFO L226 Difference]: Without dead ends: 1345 [2020-09-25 05:39:01,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:39:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-09-25 05:39:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1015. [2020-09-25 05:39:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-09-25 05:39:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1257 transitions. [2020-09-25 05:39:01,097 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1257 transitions. Word has length 161 [2020-09-25 05:39:01,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:01,099 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1257 transitions. [2020-09-25 05:39:01,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:39:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1257 transitions. [2020-09-25 05:39:01,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 05:39:01,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:01,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 05:39:01,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:01,112 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:01,112 INFO L82 PathProgramCache]: Analyzing trace with hash -482318154, now seen corresponding path program 1 times [2020-09-25 05:39:01,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:01,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139957203] [2020-09-25 05:39:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:01,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:06,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:06,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 05:39:06,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:39:06,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:06,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:39:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 05:39:06,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:06,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:06,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:06,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:06,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:39:06,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:06,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:06,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:06,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:06,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:39:06,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:06,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 05:39:06,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:06,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:39:06,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:39:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:39:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:06,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:06,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:06,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 05:39:06,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:06,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:06,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139957203] [2020-09-25 05:39:06,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:06,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:39:06,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645247889] [2020-09-25 05:39:06,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:06,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:06,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:06,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:06,824 INFO L87 Difference]: Start difference. First operand 1015 states and 1257 transitions. Second operand 7 states. [2020-09-25 05:39:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:08,906 INFO L93 Difference]: Finished difference Result 2225 states and 2851 transitions. [2020-09-25 05:39:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:39:08,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-09-25 05:39:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:08,915 INFO L225 Difference]: With dead ends: 2225 [2020-09-25 05:39:08,915 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 05:39:08,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:39:08,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 05:39:08,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1339. [2020-09-25 05:39:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-09-25 05:39:08,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1603 transitions. [2020-09-25 05:39:08,962 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1603 transitions. Word has length 215 [2020-09-25 05:39:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:08,962 INFO L479 AbstractCegarLoop]: Abstraction has 1339 states and 1603 transitions. [2020-09-25 05:39:08,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:39:08,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1603 transitions. [2020-09-25 05:39:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 05:39:08,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:08,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:08,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:08,968 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:08,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1465784404, now seen corresponding path program 1 times [2020-09-25 05:39:08,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:08,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952753824] [2020-09-25 05:39:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:09,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:14,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 05:39:14,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:39:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 05:39:14,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:14,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:39:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:39:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:14,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:14,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:14,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:14,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:14,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:14,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:14,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:14,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:14,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:14,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:14,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:14,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:14,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:14,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 05:39:14,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:14,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:39:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:14,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:14,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:14,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 05:39:14,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:14,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:14,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:14,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:14,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952753824] [2020-09-25 05:39:14,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:14,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:39:14,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491145486] [2020-09-25 05:39:14,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:39:14,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:14,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:39:14,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:14,584 INFO L87 Difference]: Start difference. First operand 1339 states and 1603 transitions. Second operand 8 states. [2020-09-25 05:39:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:17,397 INFO L93 Difference]: Finished difference Result 2821 states and 3418 transitions. [2020-09-25 05:39:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:39:17,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-25 05:39:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:17,405 INFO L225 Difference]: With dead ends: 2821 [2020-09-25 05:39:17,405 INFO L226 Difference]: Without dead ends: 1311 [2020-09-25 05:39:17,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:39:17,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-09-25 05:39:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1301. [2020-09-25 05:39:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-09-25 05:39:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1446 transitions. [2020-09-25 05:39:17,442 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1446 transitions. Word has length 225 [2020-09-25 05:39:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:17,443 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1446 transitions. [2020-09-25 05:39:17,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:39:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1446 transitions. [2020-09-25 05:39:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 05:39:17,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:17,447 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:17,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:17,448 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:17,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:17,448 INFO L82 PathProgramCache]: Analyzing trace with hash -367593207, now seen corresponding path program 1 times [2020-09-25 05:39:17,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:17,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676129339] [2020-09-25 05:39:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:17,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:18,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking...