/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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:29,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:29,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:30,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:30,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:30,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:30,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:30,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:30,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:30,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:30,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:30,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:30,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:30,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:30,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:30,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:30,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:30,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:30,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:30,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:30,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:30,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:30,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:30,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:30,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:30,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:30,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:30,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:30,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:30,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:30,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:30,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:30,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:30,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:30,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:30,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:30,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:30,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:30,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:30,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:30,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:30,044 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 12:27:30,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:30,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:30,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:30,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:30,086 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:30,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:30,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:30,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:30,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:30,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:30,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:30,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:30,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:30,089 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:30,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:30,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:30,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:30,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:30,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:30,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:30,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:30,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:30,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:30,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:30,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:30,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:30,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:30,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:30,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:30,094 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 12:27:30,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:30,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:30,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:30,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:30,617 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:30,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 12:27:30,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4676d7a28/845894da59224db98443d962ce4969da/FLAGaa316c9f6 [2020-09-25 12:27:31,346 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:31,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 12:27:31,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4676d7a28/845894da59224db98443d962ce4969da/FLAGaa316c9f6 [2020-09-25 12:27:31,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4676d7a28/845894da59224db98443d962ce4969da [2020-09-25 12:27:31,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:31,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:31,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:31,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:31,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:31,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:31" (1/1) ... [2020-09-25 12:27:31,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:31, skipping insertion in model container [2020-09-25 12:27:31,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:31" (1/1) ... [2020-09-25 12:27:31,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:31,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:32,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:32,157 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:32,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:32,388 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:32,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32 WrapperNode [2020-09-25 12:27:32,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:32,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:32,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:32,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:32,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32" (1/1) ... [2020-09-25 12:27:32,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32" (1/1) ... [2020-09-25 12:27:32,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32" (1/1) ... [2020-09-25 12:27:32,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32" (1/1) ... [2020-09-25 12:27:32,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32" (1/1) ... [2020-09-25 12:27:32,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32" (1/1) ... [2020-09-25 12:27:32,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32" (1/1) ... [2020-09-25 12:27:32,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:32,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:32,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:32,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:32,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32" (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 12:27:32,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:34,199 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:34,199 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:34,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:34 BoogieIcfgContainer [2020-09-25 12:27:34,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:34,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:34,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:34,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:34,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:31" (1/3) ... [2020-09-25 12:27:34,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:34, skipping insertion in model container [2020-09-25 12:27:34,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:32" (2/3) ... [2020-09-25 12:27:34,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:34, skipping insertion in model container [2020-09-25 12:27:34,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:34" (3/3) ... [2020-09-25 12:27:34,224 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-25 12:27:34,235 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:34,247 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:34,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:34,310 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:34,310 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:34,310 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:34,310 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:34,311 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:34,311 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:34,311 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:34,311 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:34,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 12:27:34,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:34,359 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] [2020-09-25 12:27:34,360 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:34,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-25 12:27:34,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:34,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 12:27:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:34,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:35,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:35,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 12:27:35,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:35,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-09-25 12:27:35,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:35,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 12:27:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:35,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:35,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:35,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:35,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:27:35,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:35,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:35,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:35,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:35,650 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 12:27:35,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 12:27:35,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:35,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:27:35,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920443341] [2020-09-25 12:27:35,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:27:35,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:35,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:27:35,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:27:35,683 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:27:37,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:37,878 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 12:27:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:27:37,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-25 12:27:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:37,905 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 12:27:37,905 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 12:27:37,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:37,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 12:27:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 12:27:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 12:27:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 12:27:38,018 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-25 12:27:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:38,019 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 12:27:38,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:27:38,019 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 12:27:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 12:27:38,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:38,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:38,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:38,031 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:38,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:38,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-25 12:27:38,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:38,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659324492] [2020-09-25 12:27:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:43,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 12:27:43,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:27:43,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:43,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:43,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:27:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:43,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:43,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:27:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:43,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:43,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:43,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:43,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 12:27:43,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:43,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:27:43,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:43,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659324492] [2020-09-25 12:27:43,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:43,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:43,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976638504] [2020-09-25 12:27:43,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:43,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:43,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:43,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:43,562 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 12:27:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:45,874 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 12:27:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:27:45,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 12:27:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:45,880 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 12:27:45,880 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 12:27:45,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 12:27:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 12:27:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 12:27:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 12:27:45,921 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 140 [2020-09-25 12:27:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:45,922 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 12:27:45,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 12:27:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 12:27:45,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:45,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:45,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:45,927 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:45,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:45,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-25 12:27:45,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:45,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388251293] [2020-09-25 12:27:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:45,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:50,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 12:27:50,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:50,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4691 [2020-09-25 12:27:50,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:50,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:50,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:50,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:50,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:27:50,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:50,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:50,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:50,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:50,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:27:50,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:50,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:50,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:50,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:50,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:50,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 12:27:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:50,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 12:27:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:51,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388251293] [2020-09-25 12:27:51,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:51,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:27:51,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194804509] [2020-09-25 12:27:51,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:51,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:51,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:51,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:51,060 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 5 states. [2020-09-25 12:27:52,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:52,782 INFO L93 Difference]: Finished difference Result 1045 states and 1368 transitions. [2020-09-25 12:27:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:27:52,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 12:27:52,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:52,791 INFO L225 Difference]: With dead ends: 1045 [2020-09-25 12:27:52,791 INFO L226 Difference]: Without dead ends: 1043 [2020-09-25 12:27:52,793 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 12:27:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-09-25 12:27:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 891. [2020-09-25 12:27:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 12:27:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1150 transitions. [2020-09-25 12:27:52,829 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1150 transitions. Word has length 140 [2020-09-25 12:27:52,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:52,830 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1150 transitions. [2020-09-25 12:27:52,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1150 transitions. [2020-09-25 12:27:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 12:27:52,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:52,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:52,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:52,835 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:52,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:52,836 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-25 12:27:52,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:52,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146808572] [2020-09-25 12:27:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 12:27:57,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4362 [2020-09-25 12:27:57,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 12:27:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:57,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:27:57,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:57,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:57,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 12:27:57,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:57,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146808572] [2020-09-25 12:27:57,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:57,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:57,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616340972] [2020-09-25 12:27:57,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:57,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:57,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:57,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:57,552 INFO L87 Difference]: Start difference. First operand 891 states and 1150 transitions. Second operand 8 states. [2020-09-25 12:28:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:01,040 INFO L93 Difference]: Finished difference Result 2389 states and 3284 transitions. [2020-09-25 12:28:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:01,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 12:28:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:01,056 INFO L225 Difference]: With dead ends: 2389 [2020-09-25 12:28:01,057 INFO L226 Difference]: Without dead ends: 1664 [2020-09-25 12:28:01,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-09-25 12:28:01,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1407. [2020-09-25 12:28:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2020-09-25 12:28:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1903 transitions. [2020-09-25 12:28:01,149 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1903 transitions. Word has length 146 [2020-09-25 12:28:01,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:01,151 INFO L479 AbstractCegarLoop]: Abstraction has 1407 states and 1903 transitions. [2020-09-25 12:28:01,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1903 transitions. [2020-09-25 12:28:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 12:28:01,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:01,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:01,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:01,157 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:01,157 INFO L82 PathProgramCache]: Analyzing trace with hash -425133554, now seen corresponding path program 1 times [2020-09-25 12:28:01,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:01,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701722731] [2020-09-25 12:28:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:05,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 12:28:05,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4022 [2020-09-25 12:28:05,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:05,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:28:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:05,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:05,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:05,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:05,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:28:05,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:05,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:05,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:05,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:05,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:28:05,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 12:28:05,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:05,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:28:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:05,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701722731] [2020-09-25 12:28:05,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:05,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:28:05,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600119565] [2020-09-25 12:28:05,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:05,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:05,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:05,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:05,609 INFO L87 Difference]: Start difference. First operand 1407 states and 1903 transitions. Second operand 8 states. [2020-09-25 12:28:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:08,716 INFO L93 Difference]: Finished difference Result 4446 states and 6582 transitions. [2020-09-25 12:28:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:28:08,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 12:28:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:08,739 INFO L225 Difference]: With dead ends: 4446 [2020-09-25 12:28:08,739 INFO L226 Difference]: Without dead ends: 3054 [2020-09-25 12:28:08,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:28:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2020-09-25 12:28:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2662. [2020-09-25 12:28:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2662 states. [2020-09-25 12:28:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3712 transitions. [2020-09-25 12:28:08,859 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3712 transitions. Word has length 165 [2020-09-25 12:28:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:08,860 INFO L479 AbstractCegarLoop]: Abstraction has 2662 states and 3712 transitions. [2020-09-25 12:28:08,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3712 transitions. [2020-09-25 12:28:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 12:28:08,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:08,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:08,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:08,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:08,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:08,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1396267062, now seen corresponding path program 1 times [2020-09-25 12:28:08,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:08,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730622561] [2020-09-25 12:28:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:13,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 12:28:13,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:28:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4828 [2020-09-25 12:28:13,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:13,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:28:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:28:13,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:13,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:13,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:13,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:13,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:28:13,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:13,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:28:13,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:13,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:14,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 12:28:14,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 12:28:14,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:14,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 12:28:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:14,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730622561] [2020-09-25 12:28:14,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:14,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:14,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527152261] [2020-09-25 12:28:14,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:14,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:14,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:14,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:14,137 INFO L87 Difference]: Start difference. First operand 2662 states and 3712 transitions. Second operand 7 states. [2020-09-25 12:28:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:16,585 INFO L93 Difference]: Finished difference Result 6575 states and 10824 transitions. [2020-09-25 12:28:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:16,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-25 12:28:16,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:16,630 INFO L225 Difference]: With dead ends: 6575 [2020-09-25 12:28:16,630 INFO L226 Difference]: Without dead ends: 4078 [2020-09-25 12:28:16,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:16,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2020-09-25 12:28:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3604. [2020-09-25 12:28:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3604 states. [2020-09-25 12:28:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 4897 transitions. [2020-09-25 12:28:16,814 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 4897 transitions. Word has length 189 [2020-09-25 12:28:16,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:16,815 INFO L479 AbstractCegarLoop]: Abstraction has 3604 states and 4897 transitions. [2020-09-25 12:28:16,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:16,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 4897 transitions. [2020-09-25 12:28:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 12:28:16,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:16,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:28:16,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:28:16,822 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:16,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:16,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1687252463, now seen corresponding path program 1 times [2020-09-25 12:28:16,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:16,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099394029] [2020-09-25 12:28:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:16,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:16,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:21,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 12:28:21,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 12:28:21,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:21,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:21,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:28:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:21,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:21,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:21,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:21,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:21,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:28:21,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:21,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:28:21,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:21,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:22,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:22,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:22,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:22,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 12:28:22,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:22,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:22,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:22,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:22,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:22,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 12:28:22,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:22,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 12:28:22,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099394029] [2020-09-25 12:28:22,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:22,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:28:22,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209151423] [2020-09-25 12:28:22,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:28:22,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:28:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:28:22,383 INFO L87 Difference]: Start difference. First operand 3604 states and 4897 transitions. Second operand 9 states.