/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:20,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:20,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:21,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:21,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:21,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:21,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:21,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:21,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:21,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:21,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:21,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:21,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:21,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:21,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:21,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:21,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:21,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:21,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:21,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:21,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:21,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:21,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:21,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:21,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:21,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:21,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:21,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:21,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:21,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:21,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:21,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:21,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:21,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:21,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:21,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:21,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:21,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:21,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:21,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:21,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:21,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:24:21,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:21,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:21,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:21,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:21,109 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:21,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:21,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:21,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:21,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:21,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:21,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:21,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:21,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:21,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:21,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:21,114 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:21,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:21,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:21,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:21,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:21,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:21,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:21,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:21,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:21,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:21,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:21,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:21,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:21,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:21,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:21,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:21,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:21,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:21,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:21,601 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:21,602 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 04:24:21,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaed08b8e/f7e37fe35581428a8d8659519afc0bd2/FLAG8e7602840 [2020-09-25 04:24:22,396 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:22,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 04:24:22,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaed08b8e/f7e37fe35581428a8d8659519afc0bd2/FLAG8e7602840 [2020-09-25 04:24:22,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaed08b8e/f7e37fe35581428a8d8659519afc0bd2 [2020-09-25 04:24:22,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:22,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:22,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:22,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:22,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:22,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c7438f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22, skipping insertion in model container [2020-09-25 04:24:22,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:22,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:23,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:23,176 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:23,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:23,455 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:23,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23 WrapperNode [2020-09-25 04:24:23,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:23,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:23,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:23,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:23,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23" (1/1) ... [2020-09-25 04:24:23,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23" (1/1) ... [2020-09-25 04:24:23,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23" (1/1) ... [2020-09-25 04:24:23,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23" (1/1) ... [2020-09-25 04:24:23,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23" (1/1) ... [2020-09-25 04:24:23,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23" (1/1) ... [2020-09-25 04:24:23,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23" (1/1) ... [2020-09-25 04:24:23,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:23,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:23,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:23,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:23,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:23,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:24:23,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:23,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:24:23,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:23,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:23,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:25,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:25,121 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:24:25,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:25 BoogieIcfgContainer [2020-09-25 04:24:25,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:25,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:25,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:25,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:25,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:22" (1/3) ... [2020-09-25 04:24:25,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1330ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:25, skipping insertion in model container [2020-09-25 04:24:25,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:23" (2/3) ... [2020-09-25 04:24:25,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1330ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:25, skipping insertion in model container [2020-09-25 04:24:25,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:25" (3/3) ... [2020-09-25 04:24:25,142 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-25 04:24:25,154 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:25,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:25,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:25,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:25,235 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:25,235 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:25,235 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:25,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:25,236 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:25,236 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:25,236 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:24:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 04:24:25,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:25,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:25,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:25,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:25,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-25 04:24:25,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:25,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658238283] [2020-09-25 04:24:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:30,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 04:24:30,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:24:30,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:30,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:30,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:24:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:24:30,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:24:30,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:30,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:30,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:24:30,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:30,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:24:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:30,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658238283] [2020-09-25 04:24:30,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:30,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:30,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374503614] [2020-09-25 04:24:30,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:30,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:31,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:31,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:31,010 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:24:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:33,493 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 04:24:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:24:33,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 04:24:33,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:33,523 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 04:24:33,524 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 04:24:33,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 04:24:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 04:24:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 04:24:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 04:24:33,663 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 136 [2020-09-25 04:24:33,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:33,665 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 04:24:33,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 04:24:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 04:24:33,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:33,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:33,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:33,674 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:33,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1586815040, now seen corresponding path program 1 times [2020-09-25 04:24:33,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:33,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051097196] [2020-09-25 04:24:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:33,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:34,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:35,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:38,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 04:24:38,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:24:38,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:24:38,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:38,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:24:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 04:24:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:38,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:38,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:24:38,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:38,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:24:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:38,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:38,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:24:38,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:38,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:24:38,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:39,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051097196] [2020-09-25 04:24:39,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:39,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:24:39,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125092329] [2020-09-25 04:24:39,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:24:39,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:39,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:24:39,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:24:39,007 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-25 04:24:41,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:41,827 INFO L93 Difference]: Finished difference Result 2016 states and 2519 transitions. [2020-09-25 04:24:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:24:41,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 04:24:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:41,847 INFO L225 Difference]: With dead ends: 2016 [2020-09-25 04:24:41,847 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 04:24:41,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 04:24:41,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1236. [2020-09-25 04:24:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 04:24:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1519 transitions. [2020-09-25 04:24:41,918 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1519 transitions. Word has length 157 [2020-09-25 04:24:41,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:41,919 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1519 transitions. [2020-09-25 04:24:41,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:24:41,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1519 transitions. [2020-09-25 04:24:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 04:24:41,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:41,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:41,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:24:41,927 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:41,927 INFO L82 PathProgramCache]: Analyzing trace with hash -980240193, now seen corresponding path program 1 times [2020-09-25 04:24:41,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:41,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060738968] [2020-09-25 04:24:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 04:24:47,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:24:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:24:47,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 04:24:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 04:24:47,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:47,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:24:47,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:47,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:24:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:24:47,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:24:47,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:24:47,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:47,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060738968] [2020-09-25 04:24:47,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:47,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:24:47,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476933664] [2020-09-25 04:24:47,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:24:47,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:47,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:24:47,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:47,299 INFO L87 Difference]: Start difference. First operand 1236 states and 1519 transitions. Second operand 5 states. [2020-09-25 04:24:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:49,374 INFO L93 Difference]: Finished difference Result 2961 states and 3720 transitions. [2020-09-25 04:24:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:24:49,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 04:24:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:49,385 INFO L225 Difference]: With dead ends: 2961 [2020-09-25 04:24:49,385 INFO L226 Difference]: Without dead ends: 1749 [2020-09-25 04:24:49,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:24:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-09-25 04:24:49,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1544. [2020-09-25 04:24:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-09-25 04:24:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1886 transitions. [2020-09-25 04:24:49,448 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1886 transitions. Word has length 164 [2020-09-25 04:24:49,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:49,449 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 1886 transitions. [2020-09-25 04:24:49,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:24:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1886 transitions. [2020-09-25 04:24:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 04:24:49,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:49,457 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:49,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:24:49,457 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:49,458 INFO L82 PathProgramCache]: Analyzing trace with hash -579666185, now seen corresponding path program 1 times [2020-09-25 04:24:49,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:49,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032764104] [2020-09-25 04:24:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:50,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 04:24:54,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:24:54,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:54,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 04:24:54,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:24:54,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:24:54,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:54,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:24:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:54,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:54,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:24:54,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:54,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:24:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:54,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:24:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:24:54,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:54,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 04:24:54,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:24:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:24:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:54,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032764104] [2020-09-25 04:24:54,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:54,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:24:54,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34747026] [2020-09-25 04:24:54,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:54,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:54,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:54,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:54,786 INFO L87 Difference]: Start difference. First operand 1544 states and 1886 transitions. Second operand 7 states. [2020-09-25 04:24:57,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:57,109 INFO L93 Difference]: Finished difference Result 4302 states and 5466 transitions. [2020-09-25 04:24:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:24:57,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 04:24:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:57,133 INFO L225 Difference]: With dead ends: 4302 [2020-09-25 04:24:57,133 INFO L226 Difference]: Without dead ends: 2782 [2020-09-25 04:24:57,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2020-09-25 04:24:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2649. [2020-09-25 04:24:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2649 states. [2020-09-25 04:24:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3276 transitions. [2020-09-25 04:24:57,265 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3276 transitions. Word has length 182 [2020-09-25 04:24:57,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:57,265 INFO L479 AbstractCegarLoop]: Abstraction has 2649 states and 3276 transitions. [2020-09-25 04:24:57,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:57,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3276 transitions. [2020-09-25 04:24:57,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 04:24:57,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:57,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:57,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:24:57,282 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:57,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash -211066278, now seen corresponding path program 1 times [2020-09-25 04:24:57,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:57,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268385730] [2020-09-25 04:24:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:58,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:02,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 04:25:02,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:25:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:25:02,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:02,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 04:25:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:25:02,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:02,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:02,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:02,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:02,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:02,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:25:02,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:02,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:02,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:02,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:02,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:02,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:02,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 04:25:02,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 04:25:02,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:02,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:02,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:25:02,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:02,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268385730] [2020-09-25 04:25:02,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:02,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:02,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991182916] [2020-09-25 04:25:02,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:02,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:02,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:02,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:02,631 INFO L87 Difference]: Start difference. First operand 2649 states and 3276 transitions. Second operand 5 states. [2020-09-25 04:25:04,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:04,944 INFO L93 Difference]: Finished difference Result 5344 states and 6618 transitions. [2020-09-25 04:25:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:04,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 04:25:04,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:04,959 INFO L225 Difference]: With dead ends: 5344 [2020-09-25 04:25:04,960 INFO L226 Difference]: Without dead ends: 2719 [2020-09-25 04:25:04,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2020-09-25 04:25:05,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2365. [2020-09-25 04:25:05,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2020-09-25 04:25:05,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 2819 transitions. [2020-09-25 04:25:05,043 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 2819 transitions. Word has length 183 [2020-09-25 04:25:05,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:05,044 INFO L479 AbstractCegarLoop]: Abstraction has 2365 states and 2819 transitions. [2020-09-25 04:25:05,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:05,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 2819 transitions. [2020-09-25 04:25:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 04:25:05,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:05,054 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:05,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:05,054 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:05,055 INFO L82 PathProgramCache]: Analyzing trace with hash -777703907, now seen corresponding path program 1 times [2020-09-25 04:25:05,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:05,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118344209] [2020-09-25 04:25:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking...