/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/Problem02_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:23:47,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:23:47,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:23:47,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:23:47,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:23:47,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:23:47,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:23:47,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:23:47,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:23:47,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:23:47,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:23:47,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:23:47,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:23:47,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:23:47,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:23:47,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:23:47,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:23:47,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:23:47,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:23:47,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:23:47,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:23:47,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:23:47,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:23:47,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:23:47,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:23:47,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:23:47,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:23:47,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:23:47,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:23:47,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:23:47,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:23:47,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:23:47,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:23:47,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:23:47,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:23:47,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:23:47,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:23:47,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:23:47,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:23:47,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:23:47,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:23:47,144 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 12:23:47,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:23:47,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:23:47,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:23:47,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:23:47,192 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:23:47,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:23:47,192 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:23:47,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:23:47,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:23:47,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:23:47,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:23:47,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:23:47,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:23:47,194 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:23:47,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:23:47,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:23:47,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:23:47,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:23:47,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:23:47,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:23:47,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:23:47,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:23:47,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:23:47,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:23:47,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:23:47,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:23:47,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:23:47,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:23:47,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:23:47,197 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 12:23:47,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:23:47,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:23:47,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:23:47,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:23:47,678 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:23:47,679 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label20.c [2020-09-25 12:23:47,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4d450282/66e2a1bfdb0f433fb660466d437eebff/FLAGa9cdeea27 [2020-09-25 12:23:48,424 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:23:48,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label20.c [2020-09-25 12:23:48,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4d450282/66e2a1bfdb0f433fb660466d437eebff/FLAGa9cdeea27 [2020-09-25 12:23:48,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4d450282/66e2a1bfdb0f433fb660466d437eebff [2020-09-25 12:23:48,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:23:48,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:23:48,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:48,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:23:48,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:23:48,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:48" (1/1) ... [2020-09-25 12:23:48,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1414e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:48, skipping insertion in model container [2020-09-25 12:23:48,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:48" (1/1) ... [2020-09-25 12:23:48,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:23:48,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:23:49,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:49,197 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:23:49,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:49,439 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:23:49,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49 WrapperNode [2020-09-25 12:23:49,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:49,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:23:49,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:23:49,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:23:49,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49" (1/1) ... [2020-09-25 12:23:49,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49" (1/1) ... [2020-09-25 12:23:49,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49" (1/1) ... [2020-09-25 12:23:49,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49" (1/1) ... [2020-09-25 12:23:49,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49" (1/1) ... [2020-09-25 12:23:49,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49" (1/1) ... [2020-09-25 12:23:49,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49" (1/1) ... [2020-09-25 12:23:49,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:23:49,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:23:49,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:23:49,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:23:49,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49" (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 12:23:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:23:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:23:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:23:49,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:23:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:23:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:23:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:23:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:23:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:23:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:23:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:23:51,006 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:23:51,006 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:23:51,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:51 BoogieIcfgContainer [2020-09-25 12:23:51,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:23:51,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:23:51,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:23:51,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:23:51,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:23:48" (1/3) ... [2020-09-25 12:23:51,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da87b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:51, skipping insertion in model container [2020-09-25 12:23:51,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:49" (2/3) ... [2020-09-25 12:23:51,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da87b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:51, skipping insertion in model container [2020-09-25 12:23:51,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:51" (3/3) ... [2020-09-25 12:23:51,025 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label20.c [2020-09-25 12:23:51,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:23:51,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:23:51,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:23:51,104 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:23:51,104 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:23:51,104 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:23:51,104 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:23:51,105 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:23:51,105 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:23:51,105 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:23:51,105 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:23:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:23:51,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 12:23:51,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:51,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:51,179 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:51,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:51,185 INFO L82 PathProgramCache]: Analyzing trace with hash -17794678, now seen corresponding path program 1 times [2020-09-25 12:23:51,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:51,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321232151] [2020-09-25 12:23:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:52,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:56,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:56,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 12:23:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:23:56,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:56,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:23:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 12:23:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:23:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:56,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:56,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:56,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:23:56,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:56,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:23:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:56,718 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 12:23:56,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321232151] [2020-09-25 12:23:56,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:23:56,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:23:56,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947335795] [2020-09-25 12:23:56,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:23:56,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:56,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:23:56,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:23:56,752 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:23:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:58,779 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 12:23:58,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:23:58,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-09-25 12:23:58,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:58,805 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 12:23:58,805 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 12:23:58,816 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 12:23:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 12:23:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 12:23:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 12:23:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 12:23:58,949 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 125 [2020-09-25 12:23:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:58,950 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 12:23:58,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:23:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 12:23:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 12:23:58,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:58,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:58,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:23:58,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:58,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:58,959 INFO L82 PathProgramCache]: Analyzing trace with hash 789536943, now seen corresponding path program 1 times [2020-09-25 12:23:58,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:58,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607595098] [2020-09-25 12:23:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:00,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:03,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:03,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 12:24:03,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:24:03,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:03,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 12:24:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 12:24:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:24:04,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:04,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:24:04,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:04,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:04,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:04,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:04,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:24:04,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:04,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:24:04,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:04,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:24:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:04,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607595098] [2020-09-25 12:24:04,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:04,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:24:04,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217521428] [2020-09-25 12:24:04,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:24:04,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:04,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:24:04,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:04,256 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 5 states. [2020-09-25 12:24:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:06,433 INFO L93 Difference]: Finished difference Result 1592 states and 2044 transitions. [2020-09-25 12:24:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:24:06,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 12:24:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:06,442 INFO L225 Difference]: With dead ends: 1592 [2020-09-25 12:24:06,442 INFO L226 Difference]: Without dead ends: 1001 [2020-09-25 12:24:06,446 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 12:24:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-09-25 12:24:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 801. [2020-09-25 12:24:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2020-09-25 12:24:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 979 transitions. [2020-09-25 12:24:06,487 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 979 transitions. Word has length 159 [2020-09-25 12:24:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:06,488 INFO L479 AbstractCegarLoop]: Abstraction has 801 states and 979 transitions. [2020-09-25 12:24:06,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:24:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 979 transitions. [2020-09-25 12:24:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 12:24:06,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:06,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:06,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:24:06,493 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:06,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:06,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1762086722, now seen corresponding path program 1 times [2020-09-25 12:24:06,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:06,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109689377] [2020-09-25 12:24:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:06,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:06,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:08,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:11,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 12:24:11,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 12:24:11,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:11,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 12:24:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 12:24:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:11,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:11,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:11,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:11,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:11,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:24:11,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:11,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:11,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:11,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:11,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:11,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:11,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:11,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:24:11,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:11,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:24:11,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:11,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:24:11,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:11,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109689377] [2020-09-25 12:24:11,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:11,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:24:11,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924559543] [2020-09-25 12:24:11,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:24:11,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:11,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:24:11,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:11,920 INFO L87 Difference]: Start difference. First operand 801 states and 979 transitions. Second operand 5 states. [2020-09-25 12:24:14,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:14,392 INFO L93 Difference]: Finished difference Result 2166 states and 2751 transitions. [2020-09-25 12:24:14,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:24:14,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 12:24:14,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:14,407 INFO L225 Difference]: With dead ends: 2166 [2020-09-25 12:24:14,408 INFO L226 Difference]: Without dead ends: 1387 [2020-09-25 12:24:14,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:24:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-09-25 12:24:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1268. [2020-09-25 12:24:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-09-25 12:24:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1585 transitions. [2020-09-25 12:24:14,480 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1585 transitions. Word has length 163 [2020-09-25 12:24:14,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:14,481 INFO L479 AbstractCegarLoop]: Abstraction has 1268 states and 1585 transitions. [2020-09-25 12:24:14,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:24:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1585 transitions. [2020-09-25 12:24:14,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 12:24:14,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:14,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:14,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:24:14,491 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:14,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:14,491 INFO L82 PathProgramCache]: Analyzing trace with hash -157713479, now seen corresponding path program 1 times [2020-09-25 12:24:14,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:14,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050092215] [2020-09-25 12:24:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:14,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:14,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:14,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:17,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:17,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:19,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:19,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 12:24:19,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:24:19,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:19,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:19,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 12:24:19,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:24:19,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-09-25 12:24:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:24:19,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:19,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:19,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:19,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:24:19,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:19,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:24:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:24:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:24:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:19,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:20,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:20,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 12:24:20,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:24:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-09-25 12:24:20,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:20,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:24:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 12:24:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:20,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050092215] [2020-09-25 12:24:20,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:20,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:24:20,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802538505] [2020-09-25 12:24:20,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:24:20,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:20,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:24:20,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:24:20,715 INFO L87 Difference]: Start difference. First operand 1268 states and 1585 transitions. Second operand 12 states. [2020-09-25 12:24:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:26,059 INFO L93 Difference]: Finished difference Result 3726 states and 5123 transitions. [2020-09-25 12:24:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 12:24:26,060 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 206 [2020-09-25 12:24:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:26,078 INFO L225 Difference]: With dead ends: 3726 [2020-09-25 12:24:26,078 INFO L226 Difference]: Without dead ends: 2480 [2020-09-25 12:24:26,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2020-09-25 12:24:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2020-09-25 12:24:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2105. [2020-09-25 12:24:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2020-09-25 12:24:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 2580 transitions. [2020-09-25 12:24:26,168 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 2580 transitions. Word has length 206 [2020-09-25 12:24:26,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:26,168 INFO L479 AbstractCegarLoop]: Abstraction has 2105 states and 2580 transitions. [2020-09-25 12:24:26,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:24:26,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 2580 transitions. [2020-09-25 12:24:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 12:24:26,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:26,177 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 12:24:26,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:24:26,178 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:26,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1549411250, now seen corresponding path program 1 times [2020-09-25 12:24:26,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:26,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575734425] [2020-09-25 12:24:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:26,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:31,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:31,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 12:24:31,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:24:31,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:31,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:24:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:24:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-25 12:24:31,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:31,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:31,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:31,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:31,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:31,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:31,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:24:31,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:31,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:24:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:31,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:31,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:31,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:24:31,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:31,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:24:31,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:31,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:24:31,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:24:31,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:24:31,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:31,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:24:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:31,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:32,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:32,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 12:24:32,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:24:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-09-25 12:24:32,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:32,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:24:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 12:24:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:24:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 7 proven. 86 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:24:32,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575734425] [2020-09-25 12:24:32,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:32,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:24:32,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035764394] [2020-09-25 12:24:32,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:24:32,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:24:32,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:24:32,370 INFO L87 Difference]: Start difference. First operand 2105 states and 2580 transitions. Second operand 14 states. [2020-09-25 12:24:35,219 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59