/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:01,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:01,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:01,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:01,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:01,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:01,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:01,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:01,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:01,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:01,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:01,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:01,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:01,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:01,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:01,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:01,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:01,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:01,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:01,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:01,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:01,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:01,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:01,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:01,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:01,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:01,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:01,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:01,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:01,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:01,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:01,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:01,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:01,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:01,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:01,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:01,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:01,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:01,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:01,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:01,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:01,700 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 06:43:01,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:01,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:01,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:01,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:01,764 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:01,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:01,765 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:01,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:01,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:01,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:01,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:01,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:01,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:01,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:01,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:01,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:01,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:01,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:01,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:01,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:01,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:01,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:01,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:01,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:01,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:01,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:01,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:01,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:01,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:01,775 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:43:02,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:02,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:02,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:02,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:02,307 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:02,308 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 06:43:02,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aad8d1165/25e7f748130a4d6f9d1bc66957600507/FLAG504b4d3b5 [2020-09-25 06:43:03,066 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:03,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 06:43:03,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aad8d1165/25e7f748130a4d6f9d1bc66957600507/FLAG504b4d3b5 [2020-09-25 06:43:03,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aad8d1165/25e7f748130a4d6f9d1bc66957600507 [2020-09-25 06:43:03,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:03,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:03,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:03,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:03,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:03,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:03" (1/1) ... [2020-09-25 06:43:03,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:03, skipping insertion in model container [2020-09-25 06:43:03,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:03" (1/1) ... [2020-09-25 06:43:03,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:03,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:03,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:03,949 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:04,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:04,072 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:04,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04 WrapperNode [2020-09-25 06:43:04,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:04,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:04,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:04,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:04,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04" (1/1) ... [2020-09-25 06:43:04,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04" (1/1) ... [2020-09-25 06:43:04,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04" (1/1) ... [2020-09-25 06:43:04,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04" (1/1) ... [2020-09-25 06:43:04,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04" (1/1) ... [2020-09-25 06:43:04,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04" (1/1) ... [2020-09-25 06:43:04,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04" (1/1) ... [2020-09-25 06:43:04,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:04,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:04,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:04,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:04,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04" (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 06:43:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:04,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:04,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:04,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:04,297 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:05,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:05,659 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:05,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:05 BoogieIcfgContainer [2020-09-25 06:43:05,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:05,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:05,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:05,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:05,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:03" (1/3) ... [2020-09-25 06:43:05,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6599e1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:05, skipping insertion in model container [2020-09-25 06:43:05,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:04" (2/3) ... [2020-09-25 06:43:05,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6599e1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:05, skipping insertion in model container [2020-09-25 06:43:05,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:05" (3/3) ... [2020-09-25 06:43:05,679 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 06:43:05,694 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:05,707 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:05,734 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:05,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:05,776 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:05,776 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:05,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:05,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:05,777 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:05,777 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:05,777 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:43:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 06:43:05,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:05,836 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] [2020-09-25 06:43:05,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:05,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:05,847 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 06:43:05,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:05,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018972542] [2020-09-25 06:43:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:07,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:11,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 06:43:11,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:43:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:43:11,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:11,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:43:11,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:43:11,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:11,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:11,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:11,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:43:11,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:11,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:11,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:11,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:11,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:11,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:11,567 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 06:43:11,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018972542] [2020-09-25 06:43:11,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:11,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:43:11,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340932918] [2020-09-25 06:43:11,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:43:11,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:11,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:43:11,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:43:11,607 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:43:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:13,644 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 06:43:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:13,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 06:43:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:13,678 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 06:43:13,678 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 06:43:13,694 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 06:43:13,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 06:43:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 06:43:13,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:43:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:43:13,820 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 107 [2020-09-25 06:43:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:13,822 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:43:13,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:13,823 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:43:13,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 06:43:13,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:13,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:13,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:13,840 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:13,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:13,841 INFO L82 PathProgramCache]: Analyzing trace with hash -72243779, now seen corresponding path program 1 times [2020-09-25 06:43:13,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:13,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884973626] [2020-09-25 06:43:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:18,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 06:43:18,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:43:18,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 06:43:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:18,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:43:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:43:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:19,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:19,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:19,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:43:19,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:19,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:19,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:19,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:19,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:19,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 06:43:19,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:19,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:19,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:19,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884973626] [2020-09-25 06:43:19,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:19,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:43:19,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955378275] [2020-09-25 06:43:19,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:19,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:19,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:19,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:19,186 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 06:43:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:21,581 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 06:43:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:43:21,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-25 06:43:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:21,589 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 06:43:21,590 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 06:43:21,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:43:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 06:43:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 06:43:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 06:43:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1109 transitions. [2020-09-25 06:43:21,635 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1109 transitions. Word has length 128 [2020-09-25 06:43:21,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:21,636 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1109 transitions. [2020-09-25 06:43:21,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1109 transitions. [2020-09-25 06:43:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 06:43:21,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:21,640 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:21,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:21,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:21,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1990961385, now seen corresponding path program 1 times [2020-09-25 06:43:21,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:21,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569234171] [2020-09-25 06:43:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:21,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:26,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 06:43:26,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:43:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 06:43:26,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:26,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:26,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 06:43:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 06:43:26,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:43:26,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:26,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:26,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:26,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:43:26,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:26,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:26,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:26,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:43:26,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:43:26,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:26,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:43:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:27,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569234171] [2020-09-25 06:43:27,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:27,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:27,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461211560] [2020-09-25 06:43:27,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:27,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:27,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:27,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:27,017 INFO L87 Difference]: Start difference. First operand 901 states and 1109 transitions. Second operand 5 states. [2020-09-25 06:43:29,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:29,122 INFO L93 Difference]: Finished difference Result 1836 states and 2265 transitions. [2020-09-25 06:43:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:29,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 06:43:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:29,135 INFO L225 Difference]: With dead ends: 1836 [2020-09-25 06:43:29,136 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 06:43:29,140 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 06:43:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 06:43:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 06:43:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 06:43:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1066 transitions. [2020-09-25 06:43:29,181 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1066 transitions. Word has length 129 [2020-09-25 06:43:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:29,184 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1066 transitions. [2020-09-25 06:43:29,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1066 transitions. [2020-09-25 06:43:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 06:43:29,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:29,189 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:43:29,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:43:29,193 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:29,193 INFO L82 PathProgramCache]: Analyzing trace with hash -532868870, now seen corresponding path program 1 times [2020-09-25 06:43:29,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:29,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548959358] [2020-09-25 06:43:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:29,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:34,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 06:43:34,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:43:34,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:43:34,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:34,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:43:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 06:43:34,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:34,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:34,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:34,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:34,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 06:43:34,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:34,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:34,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:34,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:34,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:34,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:34,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:43:34,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:34,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:34,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548959358] [2020-09-25 06:43:34,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:34,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:34,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736220918] [2020-09-25 06:43:34,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:34,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:34,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:34,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:34,510 INFO L87 Difference]: Start difference. First operand 901 states and 1066 transitions. Second operand 5 states. [2020-09-25 06:43:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:36,239 INFO L93 Difference]: Finished difference Result 2373 states and 2913 transitions. [2020-09-25 06:43:36,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:36,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-25 06:43:36,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:36,252 INFO L225 Difference]: With dead ends: 2373 [2020-09-25 06:43:36,253 INFO L226 Difference]: Without dead ends: 1496 [2020-09-25 06:43:36,257 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 06:43:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-09-25 06:43:36,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1473. [2020-09-25 06:43:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1473 states. [2020-09-25 06:43:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 1783 transitions. [2020-09-25 06:43:36,313 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 1783 transitions. Word has length 136 [2020-09-25 06:43:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:36,314 INFO L479 AbstractCegarLoop]: Abstraction has 1473 states and 1783 transitions. [2020-09-25 06:43:36,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 1783 transitions. [2020-09-25 06:43:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 06:43:36,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:36,324 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:43:36,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:36,324 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:36,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:36,325 INFO L82 PathProgramCache]: Analyzing trace with hash -645015236, now seen corresponding path program 1 times [2020-09-25 06:43:36,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:36,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652205901] [2020-09-25 06:43:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:36,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 06:43:37,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:43:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-09-25 06:43:37,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:43:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:43:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:37,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:37,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:37,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:43:37,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:43:37,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:37,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:43:37,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:38,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:38,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:38,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:43:38,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:38,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 06:43:38,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:38,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:38,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:38,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:38,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:43:38,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:38,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652205901] [2020-09-25 06:43:38,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:38,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:43:38,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192930012] [2020-09-25 06:43:38,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:43:38,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:38,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:43:38,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:43:38,229 INFO L87 Difference]: Start difference. First operand 1473 states and 1783 transitions. Second operand 8 states. [2020-09-25 06:43:38,735 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-09-25 06:43:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:41,199 INFO L93 Difference]: Finished difference Result 3045 states and 3702 transitions. [2020-09-25 06:43:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 06:43:41,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 06:43:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:41,215 INFO L225 Difference]: With dead ends: 3045 [2020-09-25 06:43:41,215 INFO L226 Difference]: Without dead ends: 1737 [2020-09-25 06:43:41,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:43:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2020-09-25 06:43:41,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1656. [2020-09-25 06:43:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-09-25 06:43:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 1998 transitions. [2020-09-25 06:43:41,290 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 1998 transitions. Word has length 137 [2020-09-25 06:43:41,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:41,290 INFO L479 AbstractCegarLoop]: Abstraction has 1656 states and 1998 transitions. [2020-09-25 06:43:41,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:43:41,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 1998 transitions. [2020-09-25 06:43:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 06:43:41,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:41,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:41,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:41,297 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:41,297 INFO L82 PathProgramCache]: Analyzing trace with hash 281598029, now seen corresponding path program 1 times [2020-09-25 06:43:41,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:41,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696364201] [2020-09-25 06:43:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:46,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 06:43:46,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:43:46,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4685 [2020-09-25 06:43:46,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:46,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:43:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:43:46,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:46,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:46,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:46,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:43:46,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:46,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:46,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:46,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:46,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:43:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:46,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:43:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:43:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:46,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:43:46,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:46,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 06:43:46,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:46,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:43:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:43:46,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696364201] [2020-09-25 06:43:46,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:46,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:43:46,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034319161] [2020-09-25 06:43:46,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:46,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:46,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:46,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:46,413 INFO L87 Difference]: Start difference. First operand 1656 states and 1998 transitions. Second operand 7 states. [2020-09-25 06:43:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:49,312 INFO L93 Difference]: Finished difference Result 3608 states and 4554 transitions. [2020-09-25 06:43:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:49,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-09-25 06:43:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:49,328 INFO L225 Difference]: With dead ends: 3608 [2020-09-25 06:43:49,328 INFO L226 Difference]: Without dead ends: 2117 [2020-09-25 06:43:49,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 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 06:43:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2020-09-25 06:43:49,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1958. [2020-09-25 06:43:49,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-09-25 06:43:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2345 transitions. [2020-09-25 06:43:49,407 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2345 transitions. Word has length 158 [2020-09-25 06:43:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:49,407 INFO L479 AbstractCegarLoop]: Abstraction has 1958 states and 2345 transitions. [2020-09-25 06:43:49,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2345 transitions. [2020-09-25 06:43:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 06:43:49,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:49,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:43:49,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:43:49,415 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:49,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1490542447, now seen corresponding path program 1 times [2020-09-25 06:43:49,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:49,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757873287] [2020-09-25 06:43:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:49,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking...