/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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:30,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:30,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:30,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:30,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:30,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:30,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:30,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:30,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:30,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:30,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:30,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:30,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:30,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:30,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:30,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:30,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:30,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:30,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:30,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:30,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:30,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:30,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:30,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:30,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:30,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:30,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:30,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:30,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:30,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:30,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:30,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:30,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:30,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:30,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:30,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:30,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:30,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:30,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:30,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:30,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:30,883 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 07:55:30,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:30,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:30,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:30,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:30,934 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:30,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:30,935 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:30,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:30,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:30,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:30,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:30,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:30,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:30,936 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:30,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:30,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:30,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:30,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:30,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:30,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:30,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:30,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:30,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:30,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:30,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:30,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:30,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:30,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:30,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:30,940 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:55:31,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:31,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:31,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:31,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:31,416 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:31,418 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 07:55:31,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/873572406/a3d041dc2109412bbeff4c56807c7700/FLAGaa2005eb5 [2020-09-25 07:55:32,174 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:32,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 07:55:32,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/873572406/a3d041dc2109412bbeff4c56807c7700/FLAGaa2005eb5 [2020-09-25 07:55:32,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/873572406/a3d041dc2109412bbeff4c56807c7700 [2020-09-25 07:55:32,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:32,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:32,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:32,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:32,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:32,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:32" (1/1) ... [2020-09-25 07:55:32,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:32, skipping insertion in model container [2020-09-25 07:55:32,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:32" (1/1) ... [2020-09-25 07:55:32,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:32,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:33,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:33,139 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:33,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:33,313 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:33,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33 WrapperNode [2020-09-25 07:55:33,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:33,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:33,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:33,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:33,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33" (1/1) ... [2020-09-25 07:55:33,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33" (1/1) ... [2020-09-25 07:55:33,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33" (1/1) ... [2020-09-25 07:55:33,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33" (1/1) ... [2020-09-25 07:55:33,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33" (1/1) ... [2020-09-25 07:55:33,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33" (1/1) ... [2020-09-25 07:55:33,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33" (1/1) ... [2020-09-25 07:55:33,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:33,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:33,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:33,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:33,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33" (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 07:55:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:33,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:33,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:33,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:35,170 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:35,170 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:35,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:35 BoogieIcfgContainer [2020-09-25 07:55:35,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:35,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:35,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:35,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:35,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:32" (1/3) ... [2020-09-25 07:55:35,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:35, skipping insertion in model container [2020-09-25 07:55:35,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:33" (2/3) ... [2020-09-25 07:55:35,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:35, skipping insertion in model container [2020-09-25 07:55:35,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:35" (3/3) ... [2020-09-25 07:55:35,191 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 07:55:35,204 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:35,216 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:35,240 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:35,276 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:35,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:35,276 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:35,277 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:35,277 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:35,277 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:35,277 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:35,277 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:55:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 07:55:35,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:35,326 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] [2020-09-25 07:55:35,327 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:35,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:35,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 07:55:35,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:35,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 07:55:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:35,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:36,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 07:55:36,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:55:36,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-09-25 07:55:36,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:36,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:55:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 07:55:36,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:55:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:36,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:55:36,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:36,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:55:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:36,588 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 07:55:36,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 07:55:36,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:36,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:55:36,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332353284] [2020-09-25 07:55:36,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:55:36,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:36,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:55:36,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:55:36,624 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:55:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:38,684 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 07:55:38,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:38,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 07:55:38,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:38,711 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 07:55:38,711 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 07:55:38,724 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 07:55:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 07:55:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 07:55:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 07:55:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 07:55:38,838 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 07:55:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:38,839 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 07:55:38,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 07:55:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 07:55:38,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:38,851 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:38,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:38,851 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 07:55:38,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:38,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007829854] [2020-09-25 07:55:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:41,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 07:55:41,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:41,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2626 [2020-09-25 07:55:41,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:41,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:41,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:41,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:55:41,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:55:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:41,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:41,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:41,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:41,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:55:41,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:41,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:55:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:41,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:55:41,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 07:55:41,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:41,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:55:41,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:42,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007829854] [2020-09-25 07:55:42,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:42,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:55:42,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551826762] [2020-09-25 07:55:42,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:42,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:42,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:42,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:42,034 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 07:55:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:44,475 INFO L93 Difference]: Finished difference Result 1477 states and 1881 transitions. [2020-09-25 07:55:44,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:55:44,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-25 07:55:44,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:44,487 INFO L225 Difference]: With dead ends: 1477 [2020-09-25 07:55:44,488 INFO L226 Difference]: Without dead ends: 949 [2020-09-25 07:55:44,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:55:44,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-09-25 07:55:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 888. [2020-09-25 07:55:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-25 07:55:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1123 transitions. [2020-09-25 07:55:44,537 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1123 transitions. Word has length 165 [2020-09-25 07:55:44,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:44,538 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1123 transitions. [2020-09-25 07:55:44,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:44,538 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1123 transitions. [2020-09-25 07:55:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 07:55:44,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:44,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:55:44,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:44,543 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:44,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:44,544 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 07:55:44,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:44,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835859657] [2020-09-25 07:55:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:44,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:44,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:47,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:49,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 07:55:49,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 07:55:49,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:49,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:55:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:55:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 07:55:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:49,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:49,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:49,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:55:49,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:49,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:49,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:49,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:49,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:49,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:55:49,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 07:55:49,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:49,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:55:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:55:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:50,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835859657] [2020-09-25 07:55:50,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:50,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:55:50,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121588301] [2020-09-25 07:55:50,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:55:50,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:50,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:55:50,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:50,012 INFO L87 Difference]: Start difference. First operand 888 states and 1123 transitions. Second operand 6 states. [2020-09-25 07:55:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:52,667 INFO L93 Difference]: Finished difference Result 2766 states and 3690 transitions. [2020-09-25 07:55:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:55:52,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-09-25 07:55:52,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:52,689 INFO L225 Difference]: With dead ends: 2766 [2020-09-25 07:55:52,689 INFO L226 Difference]: Without dead ends: 1893 [2020-09-25 07:55:52,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 07:55:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-09-25 07:55:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1822. [2020-09-25 07:55:52,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1822 states. [2020-09-25 07:55:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2422 transitions. [2020-09-25 07:55:52,791 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2422 transitions. Word has length 174 [2020-09-25 07:55:52,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:52,797 INFO L479 AbstractCegarLoop]: Abstraction has 1822 states and 2422 transitions. [2020-09-25 07:55:52,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:55:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2422 transitions. [2020-09-25 07:55:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 07:55:52,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:52,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:55:52,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:52,802 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:52,803 INFO L82 PathProgramCache]: Analyzing trace with hash 969467690, now seen corresponding path program 1 times [2020-09-25 07:55:52,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:52,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766133251] [2020-09-25 07:55:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:52,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:55,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:55,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 07:55:55,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3108 [2020-09-25 07:55:55,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:55,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:55:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:55:55,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:56,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:56,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:56,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:56,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:55:56,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:56,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:56,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:56,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:56,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:55:56,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:56,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:56,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:56,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:55:56,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 07:55:56,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:56,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:55:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:56,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766133251] [2020-09-25 07:55:56,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:56,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:55:56,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346408870] [2020-09-25 07:55:56,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:56,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:56,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:56,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:56,350 INFO L87 Difference]: Start difference. First operand 1822 states and 2422 transitions. Second operand 7 states. [2020-09-25 07:55:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:58,915 INFO L93 Difference]: Finished difference Result 4919 states and 6852 transitions. [2020-09-25 07:55:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:55:58,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 07:55:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:58,942 INFO L225 Difference]: With dead ends: 4919 [2020-09-25 07:55:58,942 INFO L226 Difference]: Without dead ends: 3112 [2020-09-25 07:55:58,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2020-09-25 07:55:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 2622. [2020-09-25 07:55:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-09-25 07:55:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3439 transitions. [2020-09-25 07:55:59,087 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3439 transitions. Word has length 176 [2020-09-25 07:55:59,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:59,087 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3439 transitions. [2020-09-25 07:55:59,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3439 transitions. [2020-09-25 07:55:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 07:55:59,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:59,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:59,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:59,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:59,098 INFO L82 PathProgramCache]: Analyzing trace with hash -422841132, now seen corresponding path program 1 times [2020-09-25 07:55:59,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:59,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304559452] [2020-09-25 07:55:59,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:59,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:04,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 07:56:04,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:56:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:56:04,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:04,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:56:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:56:04,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:04,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:04,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:04,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:04,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:04,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:04,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:04,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:04,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 07:56:04,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:04,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:56:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:04,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:04,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 07:56:04,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:04,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:04,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 146 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:56:05,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304559452] [2020-09-25 07:56:05,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:05,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:56:05,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884504103] [2020-09-25 07:56:05,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:56:05,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:56:05,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:56:05,009 INFO L87 Difference]: Start difference. First operand 2622 states and 3439 transitions. Second operand 9 states. [2020-09-25 07:56:09,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:09,660 INFO L93 Difference]: Finished difference Result 6211 states and 8419 transitions. [2020-09-25 07:56:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:09,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 257 [2020-09-25 07:56:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:09,683 INFO L225 Difference]: With dead ends: 6211 [2020-09-25 07:56:09,683 INFO L226 Difference]: Without dead ends: 3735 [2020-09-25 07:56:09,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2020-09-25 07:56:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3534. [2020-09-25 07:56:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3534 states. [2020-09-25 07:56:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 4558 transitions. [2020-09-25 07:56:09,802 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 4558 transitions. Word has length 257 [2020-09-25 07:56:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:09,803 INFO L479 AbstractCegarLoop]: Abstraction has 3534 states and 4558 transitions. [2020-09-25 07:56:09,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:56:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 4558 transitions. [2020-09-25 07:56:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-25 07:56:09,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:09,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 07:56:09,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:09,812 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:09,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:09,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2077380539, now seen corresponding path program 1 times [2020-09-25 07:56:09,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:09,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034314555] [2020-09-25 07:56:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:09,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:14,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:14,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-09-25 07:56:14,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:14,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:56:14,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:14,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:56:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 07:56:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:15,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:15,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:15,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:15,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:56:15,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:15,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:15,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:15,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:15,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:15,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:15,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 07:56:15,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:15,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:56:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:15,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:15,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:15,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:15,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 07:56:15,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-25 07:56:15,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:15,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:15,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:56:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 146 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 07:56:15,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034314555] [2020-09-25 07:56:15,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:15,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:56:15,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749182550] [2020-09-25 07:56:15,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:56:15,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:15,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:56:15,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:56:15,776 INFO L87 Difference]: Start difference. First operand 3534 states and 4558 transitions. Second operand 9 states.