/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:54,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:54,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:54,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:54,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:54,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:54,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:54,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:54,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:54,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:54,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:54,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:54,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:54,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:54,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:54,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:54,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:54,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:54,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:54,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:54,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:54,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:54,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:54,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:54,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:54,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:54,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:54,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:54,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:54,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:54,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:54,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:54,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:54,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:54,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:54,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:54,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:54,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:54,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:54,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:54,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:54,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:46:54,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:54,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:54,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:54,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:54,887 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:54,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:54,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:54,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:54,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:54,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:54,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:54,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:54,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:54,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:54,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:54,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:54,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:54,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:54,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:54,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:54,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:54,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:54,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:54,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:54,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:54,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:54,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:54,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:54,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:54,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:46:55,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:55,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:55,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:55,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:55,402 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:55,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 06:46:55,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a0d94e9/0a43244d5ab149db9cf5456fa1d23bae/FLAGe08427a03 [2020-09-25 06:46:56,149 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:56,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 06:46:56,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a0d94e9/0a43244d5ab149db9cf5456fa1d23bae/FLAGe08427a03 [2020-09-25 06:46:56,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a0d94e9/0a43244d5ab149db9cf5456fa1d23bae [2020-09-25 06:46:56,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:56,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:56,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:56,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:56,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:56,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:56" (1/1) ... [2020-09-25 06:46:56,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45214687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:56, skipping insertion in model container [2020-09-25 06:46:56,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:56" (1/1) ... [2020-09-25 06:46:56,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:56,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:57,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:57,132 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:57,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:57,247 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:57,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57 WrapperNode [2020-09-25 06:46:57,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:57,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:57,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:57,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:57,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57" (1/1) ... [2020-09-25 06:46:57,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57" (1/1) ... [2020-09-25 06:46:57,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57" (1/1) ... [2020-09-25 06:46:57,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57" (1/1) ... [2020-09-25 06:46:57,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57" (1/1) ... [2020-09-25 06:46:57,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57" (1/1) ... [2020-09-25 06:46:57,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57" (1/1) ... [2020-09-25 06:46:57,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:57,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:57,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:57,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:57,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:57,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:57,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:57,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:57,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:57,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:59,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:59,051 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:59,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:59 BoogieIcfgContainer [2020-09-25 06:46:59,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:59,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:59,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:59,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:59,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:56" (1/3) ... [2020-09-25 06:46:59,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269c7e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:59, skipping insertion in model container [2020-09-25 06:46:59,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:57" (2/3) ... [2020-09-25 06:46:59,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269c7e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:59, skipping insertion in model container [2020-09-25 06:46:59,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:59" (3/3) ... [2020-09-25 06:46:59,070 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-25 06:46:59,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:59,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:59,125 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:59,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:59,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:59,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:59,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:59,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:59,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:59,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:59,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:59,202 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:46:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 06:46:59,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:59,217 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] [2020-09-25 06:46:59,217 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:59,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:59,226 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-25 06:46:59,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:59,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818071987] [2020-09-25 06:46:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:00,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 06:47:00,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:00,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-09-25 06:47:00,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:00,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:00,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 06:47:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:00,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:00,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:00,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:47:00,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:00,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:00,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:00,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:00,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:00,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818071987] [2020-09-25 06:47:00,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:00,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:00,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283458563] [2020-09-25 06:47:00,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:00,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:00,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:00,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:00,546 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:02,647 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 06:47:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:02,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 06:47:02,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:02,674 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 06:47:02,675 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 06:47:02,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 06:47:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 06:47:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 06:47:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 06:47:02,808 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 64 [2020-09-25 06:47:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:02,809 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 06:47:02,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:02,809 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 06:47:02,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 06:47:02,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:02,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:02,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:02,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:02,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1704622095, now seen corresponding path program 1 times [2020-09-25 06:47:02,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:02,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529760760] [2020-09-25 06:47:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:02,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:03,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:06,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:06,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 06:47:06,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:47:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3306 [2020-09-25 06:47:06,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:06,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:06,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 06:47:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:06,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:06,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:06,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:06,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:06,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:06,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:06,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:06,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:06,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:06,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 06:47:06,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:06,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:47:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:06,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529760760] [2020-09-25 06:47:06,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:06,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:47:06,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230440920] [2020-09-25 06:47:06,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:06,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:06,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:06,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:06,437 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-25 06:47:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:08,345 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-25 06:47:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:47:08,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 06:47:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:08,357 INFO L225 Difference]: With dead ends: 1461 [2020-09-25 06:47:08,357 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 06:47:08,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 06:47:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-25 06:47:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 06:47:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-25 06:47:08,404 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 143 [2020-09-25 06:47:08,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:08,405 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-25 06:47:08,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-25 06:47:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 06:47:08,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:08,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:08,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:47:08,411 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:08,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:08,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1280909557, now seen corresponding path program 1 times [2020-09-25 06:47:08,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:08,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716434019] [2020-09-25 06:47:08,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:08,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:10,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 06:47:10,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:10,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1644 [2020-09-25 06:47:10,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:10,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:47:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:47:10,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:10,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:10,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:10,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:47:10,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:10,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:10,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:47:10,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 06:47:10,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:10,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:47:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:10,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716434019] [2020-09-25 06:47:10,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:10,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:47:10,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986049333] [2020-09-25 06:47:10,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:10,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:10,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:10,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:10,534 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 8 states. [2020-09-25 06:47:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:13,148 INFO L93 Difference]: Finished difference Result 3045 states and 4270 transitions. [2020-09-25 06:47:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:47:13,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-09-25 06:47:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:13,165 INFO L225 Difference]: With dead ends: 3045 [2020-09-25 06:47:13,165 INFO L226 Difference]: Without dead ends: 2176 [2020-09-25 06:47:13,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:47:13,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2020-09-25 06:47:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2128. [2020-09-25 06:47:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2128 states. [2020-09-25 06:47:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 2761 transitions. [2020-09-25 06:47:13,281 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 2761 transitions. Word has length 155 [2020-09-25 06:47:13,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:13,282 INFO L479 AbstractCegarLoop]: Abstraction has 2128 states and 2761 transitions. [2020-09-25 06:47:13,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 2761 transitions. [2020-09-25 06:47:13,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 06:47:13,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:13,295 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, 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] [2020-09-25 06:47:13,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:13,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:13,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1595178403, now seen corresponding path program 1 times [2020-09-25 06:47:13,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:13,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324885553] [2020-09-25 06:47:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:16,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:18,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 06:47:18,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:47:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 06:47:18,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:18,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:47:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:18,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:18,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:18,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:18,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:18,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:18,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:18,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:18,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:18,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:18,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 06:47:18,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:18,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:18,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:18,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:18,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:47:18,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:18,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:18,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 06:47:18,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:18,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 06:47:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:19,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324885553] [2020-09-25 06:47:19,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:19,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:19,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078112678] [2020-09-25 06:47:19,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:19,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:19,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:19,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:19,035 INFO L87 Difference]: Start difference. First operand 2128 states and 2761 transitions. Second operand 8 states. [2020-09-25 06:47:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:22,832 INFO L93 Difference]: Finished difference Result 6893 states and 10259 transitions. [2020-09-25 06:47:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:47:22,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-09-25 06:47:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:22,870 INFO L225 Difference]: With dead ends: 6893 [2020-09-25 06:47:22,870 INFO L226 Difference]: Without dead ends: 4780 [2020-09-25 06:47:22,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:47:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2020-09-25 06:47:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 4167. [2020-09-25 06:47:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4167 states. [2020-09-25 06:47:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 5665 transitions. [2020-09-25 06:47:23,050 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 5665 transitions. Word has length 232 [2020-09-25 06:47:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:23,051 INFO L479 AbstractCegarLoop]: Abstraction has 4167 states and 5665 transitions. [2020-09-25 06:47:23,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:23,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 5665 transitions. [2020-09-25 06:47:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 06:47:23,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:23,060 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:23,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:23,060 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:23,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:23,061 INFO L82 PathProgramCache]: Analyzing trace with hash 522738282, now seen corresponding path program 1 times [2020-09-25 06:47:23,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:23,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777056780] [2020-09-25 06:47:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:23,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:23,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:24,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:26,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:28,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 06:47:28,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:47:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:47:28,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:28,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:28,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:28,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:47:28,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:47:28,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:28,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:28,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:28,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:28,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:28,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:28,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:28,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:28,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:28,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 06:47:28,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:28,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:28,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:28,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:28,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:28,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:28,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 06:47:28,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:28,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:28,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777056780] [2020-09-25 06:47:28,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:28,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:28,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604647703] [2020-09-25 06:47:28,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:28,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:28,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:28,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:28,655 INFO L87 Difference]: Start difference. First operand 4167 states and 5665 transitions. Second operand 8 states. [2020-09-25 06:47:31,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:31,822 INFO L93 Difference]: Finished difference Result 9045 states and 12742 transitions. [2020-09-25 06:47:31,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:47:31,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 06:47:31,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:31,847 INFO L225 Difference]: With dead ends: 9045 [2020-09-25 06:47:31,847 INFO L226 Difference]: Without dead ends: 4091 [2020-09-25 06:47:31,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:47:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2020-09-25 06:47:31,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3379. [2020-09-25 06:47:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3379 states. [2020-09-25 06:47:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4388 transitions. [2020-09-25 06:47:31,971 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4388 transitions. Word has length 236 [2020-09-25 06:47:31,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:31,972 INFO L479 AbstractCegarLoop]: Abstraction has 3379 states and 4388 transitions. [2020-09-25 06:47:31,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4388 transitions. [2020-09-25 06:47:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 06:47:31,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:31,978 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, 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] [2020-09-25 06:47:31,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:31,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2080459986, now seen corresponding path program 1 times [2020-09-25 06:47:31,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:31,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089095636] [2020-09-25 06:47:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:37,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:37,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 06:47:37,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:37,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:47:37,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:37,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:37,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:37,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:47:37,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:37,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:37,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:37,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:37,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:47:37,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:37,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:37,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:37,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:37,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:37,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:47:37,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:37,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 06:47:37,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:37,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 06:47:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:37,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 06:47:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:37,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:37,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:37,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 06:47:37,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:37,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 06:47:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 96 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:47:37,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089095636] [2020-09-25 06:47:37,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:37,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:37,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691460543] [2020-09-25 06:47:37,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:37,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:37,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:37,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:37,515 INFO L87 Difference]: Start difference. First operand 3379 states and 4388 transitions. Second operand 7 states. [2020-09-25 06:47:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:39,051 INFO L93 Difference]: Finished difference Result 6599 states and 8616 transitions. [2020-09-25 06:47:39,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:47:39,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-09-25 06:47:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:39,072 INFO L225 Difference]: With dead ends: 6599 [2020-09-25 06:47:39,072 INFO L226 Difference]: Without dead ends: 3385 [2020-09-25 06:47:39,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:47:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2020-09-25 06:47:39,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 3379. [2020-09-25 06:47:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3379 states. [2020-09-25 06:47:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4382 transitions. [2020-09-25 06:47:39,179 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4382 transitions. Word has length 239 [2020-09-25 06:47:39,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:39,180 INFO L479 AbstractCegarLoop]: Abstraction has 3379 states and 4382 transitions. [2020-09-25 06:47:39,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4382 transitions. [2020-09-25 06:47:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-25 06:47:39,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:39,190 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, 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] [2020-09-25 06:47:39,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:47:39,190 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:39,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:39,191 INFO L82 PathProgramCache]: Analyzing trace with hash -490376792, now seen corresponding path program 1 times [2020-09-25 06:47:39,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:39,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69470935] [2020-09-25 06:47:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-09-25 06:47:44,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:44,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:47:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:44,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 06:47:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 06:47:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:44,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:44,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:44,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:47:44,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:44,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:44,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:44,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:44,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:44,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:47:44,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:44,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:44,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:44,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:44,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:47:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:44,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:44,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 06:47:44,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 06:47:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:44,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:44,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 06:47:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:44,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69470935] [2020-09-25 06:47:44,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:44,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:44,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934377523] [2020-09-25 06:47:44,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:44,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:44,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:44,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:44,706 INFO L87 Difference]: Start difference. First operand 3379 states and 4382 transitions. Second operand 7 states.