/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:03,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:03,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:03,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:03,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:03,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:03,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:03,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:03,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:03,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:03,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:03,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:03,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:03,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:03,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:03,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:03,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:03,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:03,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:03,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:03,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:03,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:03,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:03,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:03,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:03,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:03,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:03,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:03,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:03,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:03,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:03,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:03,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:03,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:03,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:03,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:03,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:03,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:03,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:03,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:03,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:03,191 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 12:26:03,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:03,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:03,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:03,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:03,247 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:03,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:03,248 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:03,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:03,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:03,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:03,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:03,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:03,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:03,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:03,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:03,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:03,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:03,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:03,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:03,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:03,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:03,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:03,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:03,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:03,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:03,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:03,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:03,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:03,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:03,254 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:26:03,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:03,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:03,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:03,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:03,786 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:03,787 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 12:26:03,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81b9f40b2/6607f431547541d0aba42aff37535a0d/FLAG92b7f7b60 [2020-09-25 12:26:04,525 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:04,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 12:26:04,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81b9f40b2/6607f431547541d0aba42aff37535a0d/FLAG92b7f7b60 [2020-09-25 12:26:04,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81b9f40b2/6607f431547541d0aba42aff37535a0d [2020-09-25 12:26:04,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:04,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:04,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:04,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:04,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:04,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:04" (1/1) ... [2020-09-25 12:26:04,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:04, skipping insertion in model container [2020-09-25 12:26:04,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:04" (1/1) ... [2020-09-25 12:26:04,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:04,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:05,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:05,348 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:05,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:05,655 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:05,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05 WrapperNode [2020-09-25 12:26:05,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:05,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:05,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:05,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:05,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05" (1/1) ... [2020-09-25 12:26:05,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05" (1/1) ... [2020-09-25 12:26:05,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05" (1/1) ... [2020-09-25 12:26:05,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05" (1/1) ... [2020-09-25 12:26:05,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05" (1/1) ... [2020-09-25 12:26:05,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05" (1/1) ... [2020-09-25 12:26:05,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05" (1/1) ... [2020-09-25 12:26:05,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:05,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:05,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:05,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:05,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05" (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 12:26:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:07,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:07,487 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:07,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:07 BoogieIcfgContainer [2020-09-25 12:26:07,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:07,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:07,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:07,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:07,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:04" (1/3) ... [2020-09-25 12:26:07,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:07, skipping insertion in model container [2020-09-25 12:26:07,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:05" (2/3) ... [2020-09-25 12:26:07,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:07, skipping insertion in model container [2020-09-25 12:26:07,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:07" (3/3) ... [2020-09-25 12:26:07,520 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-25 12:26:07,532 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:07,546 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:07,568 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:07,601 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:07,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:07,602 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:07,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:07,602 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:07,602 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:07,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:07,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 12:26:07,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:07,644 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] [2020-09-25 12:26:07,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:07,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:07,652 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-25 12:26:07,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:07,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 12:26:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:07,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:08,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 12:26:08,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-25 12:26:08,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:08,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:08,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 12:26:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:26:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:09,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:09,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:09,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:26:09,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:09,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:09,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:09,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:09,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:26:09,122 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 12:26:09,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 12:26:09,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:09,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:09,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523405476] [2020-09-25 12:26:09,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:09,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:09,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:09,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:09,171 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:11,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:11,409 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 12:26:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:11,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 12:26:11,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:11,463 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 12:26:11,463 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 12:26:11,474 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 12:26:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 12:26:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 12:26:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 12:26:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 12:26:11,576 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 43 [2020-09-25 12:26:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:11,576 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 12:26:11,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:11,577 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 12:26:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 12:26:11,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:11,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:11,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:11,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:11,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:11,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1041597203, now seen corresponding path program 1 times [2020-09-25 12:26:11,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:11,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973170217] [2020-09-25 12:26:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:13,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 12:26:13,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:13,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1845 [2020-09-25 12:26:13,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:13,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:26:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:13,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:13,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:26:13,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:13,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:13,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:13,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:13,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:13,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:13,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:26:13,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 12:26:13,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:13,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:26:13,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:13,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973170217] [2020-09-25 12:26:13,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:13,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:26:13,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599892265] [2020-09-25 12:26:13,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:13,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:13,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:13,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:13,879 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 12:26:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:16,355 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 12:26:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:26:16,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-25 12:26:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:16,362 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 12:26:16,362 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 12:26:16,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 12:26:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 12:26:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 12:26:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 12:26:16,400 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 123 [2020-09-25 12:26:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:16,401 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 12:26:16,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 12:26:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 12:26:16,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:16,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:16,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:16,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:16,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:16,405 INFO L82 PathProgramCache]: Analyzing trace with hash -203251606, now seen corresponding path program 1 times [2020-09-25 12:26:16,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:16,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511695564] [2020-09-25 12:26:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:19,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 12:26:19,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:26:19,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2701 [2020-09-25 12:26:19,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:19,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:26:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 12:26:19,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:19,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:19,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:26:19,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:19,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:26:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:19,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:19,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:19,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 12:26:19,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:19,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:19,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:26:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:19,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:19,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511695564] [2020-09-25 12:26:19,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:19,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:26:19,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864587087] [2020-09-25 12:26:19,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:26:19,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:19,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:26:19,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:26:19,914 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 12 states. [2020-09-25 12:26:23,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:23,131 INFO L93 Difference]: Finished difference Result 1337 states and 1690 transitions. [2020-09-25 12:26:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:26:23,131 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-09-25 12:26:23,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:23,143 INFO L225 Difference]: With dead ends: 1337 [2020-09-25 12:26:23,144 INFO L226 Difference]: Without dead ends: 775 [2020-09-25 12:26:23,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:26:23,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-09-25 12:26:23,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 699. [2020-09-25 12:26:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 12:26:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 854 transitions. [2020-09-25 12:26:23,209 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 854 transitions. Word has length 132 [2020-09-25 12:26:23,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:23,211 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 854 transitions. [2020-09-25 12:26:23,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:26:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 854 transitions. [2020-09-25 12:26:23,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 12:26:23,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:23,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:23,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:23,226 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:23,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:23,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1058703710, now seen corresponding path program 1 times [2020-09-25 12:26:23,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:23,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339719972] [2020-09-25 12:26:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:23,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:23,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 12:26:26,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:26,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2858 [2020-09-25 12:26:26,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 12:26:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:26,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:26,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:26,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:26,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:26:26,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 12:26:26,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:26:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:26,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339719972] [2020-09-25 12:26:26,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:26,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:26,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418778084] [2020-09-25 12:26:26,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:26,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:26,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:26,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:26,470 INFO L87 Difference]: Start difference. First operand 699 states and 854 transitions. Second operand 8 states. [2020-09-25 12:26:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:30,134 INFO L93 Difference]: Finished difference Result 1983 states and 2596 transitions. [2020-09-25 12:26:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:26:30,135 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-09-25 12:26:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:30,146 INFO L225 Difference]: With dead ends: 1983 [2020-09-25 12:26:30,147 INFO L226 Difference]: Without dead ends: 1449 [2020-09-25 12:26:30,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:26:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2020-09-25 12:26:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1352. [2020-09-25 12:26:30,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-09-25 12:26:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1690 transitions. [2020-09-25 12:26:30,202 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1690 transitions. Word has length 134 [2020-09-25 12:26:30,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:30,204 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1690 transitions. [2020-09-25 12:26:30,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1690 transitions. [2020-09-25 12:26:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 12:26:30,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:30,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:30,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:30,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:30,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1010276362, now seen corresponding path program 1 times [2020-09-25 12:26:30,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:30,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129941220] [2020-09-25 12:26:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:30,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:35,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:35,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 12:26:35,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4898 [2020-09-25 12:26:35,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:35,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:26:35,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:26:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:35,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:35,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:26:35,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:35,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:26:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:35,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:35,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:26:35,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 12:26:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:35,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:26:35,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:35,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129941220] [2020-09-25 12:26:35,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:35,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:26:35,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987351181] [2020-09-25 12:26:35,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:35,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:35,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:35,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:35,695 INFO L87 Difference]: Start difference. First operand 1352 states and 1690 transitions. Second operand 7 states. [2020-09-25 12:26:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:38,316 INFO L93 Difference]: Finished difference Result 3251 states and 4290 transitions. [2020-09-25 12:26:38,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:26:38,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 12:26:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:38,330 INFO L225 Difference]: With dead ends: 3251 [2020-09-25 12:26:38,330 INFO L226 Difference]: Without dead ends: 2064 [2020-09-25 12:26:38,336 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 12:26:38,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2020-09-25 12:26:38,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1996. [2020-09-25 12:26:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1996 states. [2020-09-25 12:26:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2446 transitions. [2020-09-25 12:26:38,413 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2446 transitions. Word has length 151 [2020-09-25 12:26:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:38,413 INFO L479 AbstractCegarLoop]: Abstraction has 1996 states and 2446 transitions. [2020-09-25 12:26:38,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:38,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2446 transitions. [2020-09-25 12:26:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 12:26:38,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:38,418 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:26:38,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:38,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1479799897, now seen corresponding path program 1 times [2020-09-25 12:26:38,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:38,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858043534] [2020-09-25 12:26:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:39,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:43,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:43,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:43,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 12:26:43,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-09-25 12:26:43,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:43,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:26:43,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:26:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:43,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:43,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:43,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:43,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:43,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:43,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:43,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:43,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:43,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:43,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:43,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:43,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 12:26:43,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:43,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:26:43,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:43,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:44,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:44,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:44,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 12:26:44,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:44,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 57 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 12:26:44,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858043534] [2020-09-25 12:26:44,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:44,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:26:44,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737709146] [2020-09-25 12:26:44,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:26:44,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:44,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:26:44,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:26:44,182 INFO L87 Difference]: Start difference. First operand 1996 states and 2446 transitions. Second operand 9 states. [2020-09-25 12:26:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:47,914 INFO L93 Difference]: Finished difference Result 4535 states and 5753 transitions. [2020-09-25 12:26:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:26:47,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2020-09-25 12:26:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:47,933 INFO L225 Difference]: With dead ends: 4535 [2020-09-25 12:26:47,933 INFO L226 Difference]: Without dead ends: 2704 [2020-09-25 12:26:47,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:26:47,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2020-09-25 12:26:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2649. [2020-09-25 12:26:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2649 states. [2020-09-25 12:26:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3247 transitions. [2020-09-25 12:26:48,019 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3247 transitions. Word has length 211 [2020-09-25 12:26:48,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:48,019 INFO L479 AbstractCegarLoop]: Abstraction has 2649 states and 3247 transitions. [2020-09-25 12:26:48,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:26:48,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3247 transitions. [2020-09-25 12:26:48,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 12:26:48,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:48,025 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:26:48,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:26:48,025 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:48,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:48,025 INFO L82 PathProgramCache]: Analyzing trace with hash -12142129, now seen corresponding path program 1 times [2020-09-25 12:26:48,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:48,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188727400] [2020-09-25 12:26:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:48,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 12:26:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-25 12:26:48,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:48,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-09-25 12:26:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:26:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:48,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:48,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:48,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:26:48,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:48,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:48,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:48,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:48,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:48,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:48,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 12:26:48,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:26:48,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:48,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:48,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 12:26:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:48,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:48,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:26:48,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 12:26:48,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:48,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 12:26:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 12:26:48,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188727400] [2020-09-25 12:26:48,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:48,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:48,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498987460] [2020-09-25 12:26:48,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:48,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:48,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:48,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:48,980 INFO L87 Difference]: Start difference. First operand 2649 states and 3247 transitions. Second operand 5 states. [2020-09-25 12:26:50,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:50,993 INFO L93 Difference]: Finished difference Result 5738 states and 7194 transitions. [2020-09-25 12:26:50,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:50,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-09-25 12:26:50,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:51,014 INFO L225 Difference]: With dead ends: 5738 [2020-09-25 12:26:51,015 INFO L226 Difference]: Without dead ends: 3259 [2020-09-25 12:26:51,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 12:26:51,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2020-09-25 12:26:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 2953. [2020-09-25 12:26:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2953 states. [2020-09-25 12:26:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 3567 transitions. [2020-09-25 12:26:51,104 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 3567 transitions. Word has length 247 [2020-09-25 12:26:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:51,104 INFO L479 AbstractCegarLoop]: Abstraction has 2953 states and 3567 transitions. [2020-09-25 12:26:51,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 3567 transitions. [2020-09-25 12:26:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 12:26:51,109 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:51,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:26:51,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:26:51,110 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:51,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1331475410, now seen corresponding path program 1 times [2020-09-25 12:26:51,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:51,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102717931] [2020-09-25 12:26:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking...