/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=0.4 --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/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:31,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:31,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:31,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:31,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:31,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:31,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:31,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:31,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:31,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:31,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:31,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:31,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:31,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:31,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:31,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:31,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:31,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:31,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:31,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:31,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:31,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:31,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:31,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:31,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:31,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:31,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:31,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:31,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:31,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:31,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:31,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:31,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:31,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:31,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:31,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:31,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:31,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:31,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:31,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:31,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:31,155 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 13:35:31,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:31,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:31,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:31,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:31,215 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:31,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:31,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:31,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:31,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:31,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:31,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:31,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:31,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:31,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:31,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:31,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:31,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:31,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:31,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:31,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:31,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:31,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:31,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:31,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:31,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:31,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:31,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:31,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:31,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:31,224 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:35:31,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:31,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:31,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:31,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:31,714 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:31,715 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 13:35:31,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5513de57a/ef9a476e6c1f403786da30a3ca7dd273/FLAGd977e102b [2020-09-25 13:35:32,509 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:32,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 13:35:32,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5513de57a/ef9a476e6c1f403786da30a3ca7dd273/FLAGd977e102b [2020-09-25 13:35:32,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5513de57a/ef9a476e6c1f403786da30a3ca7dd273 [2020-09-25 13:35:32,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:32,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:32,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:32,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:32,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:32,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:32" (1/1) ... [2020-09-25 13:35:32,729 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 01:35:32, skipping insertion in model container [2020-09-25 13:35:32,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:32" (1/1) ... [2020-09-25 13:35:32,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:32,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:33,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:33,862 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:34,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:34,084 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:34,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34 WrapperNode [2020-09-25 13:35:34,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:34,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:34,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:34,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:34,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34" (1/1) ... [2020-09-25 13:35:34,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34" (1/1) ... [2020-09-25 13:35:34,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34" (1/1) ... [2020-09-25 13:35:34,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34" (1/1) ... [2020-09-25 13:35:34,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34" (1/1) ... [2020-09-25 13:35:34,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34" (1/1) ... [2020-09-25 13:35:34,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34" (1/1) ... [2020-09-25 13:35:34,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:34,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:34,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:34,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:34,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34" (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 13:35:34,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:34,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:34,370 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:34,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:34,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:34,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:34,371 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:34,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:34,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:34,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:37,022 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:37,023 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:37,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:37 BoogieIcfgContainer [2020-09-25 13:35:37,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:37,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:37,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:37,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:37,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:32" (1/3) ... [2020-09-25 13:35:37,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5daf7063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:37, skipping insertion in model container [2020-09-25 13:35:37,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:34" (2/3) ... [2020-09-25 13:35:37,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5daf7063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:37, skipping insertion in model container [2020-09-25 13:35:37,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:37" (3/3) ... [2020-09-25 13:35:37,060 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 13:35:37,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:37,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:37,107 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:37,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:37,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:37,143 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:37,143 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:37,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:37,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:37,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:37,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 13:35:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 13:35:37,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:37,203 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] [2020-09-25 13:35:37,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:37,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:37,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 13:35:37,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:37,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181928973] [2020-09-25 13:35:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:37,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:37,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:38,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:35:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-09-25 13:35:38,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:38,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:35:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:35:38,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:35:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:38,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:35:38,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:35:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:38,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:35:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:38,492 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 13:35:38,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181928973] [2020-09-25 13:35:38,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:38,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:35:38,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732777775] [2020-09-25 13:35:38,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:38,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:38,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:38,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:38,526 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 13:35:43,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:43,982 INFO L93 Difference]: Finished difference Result 2361 states and 3156 transitions. [2020-09-25 13:35:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:35:43,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-25 13:35:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:44,016 INFO L225 Difference]: With dead ends: 2361 [2020-09-25 13:35:44,017 INFO L226 Difference]: Without dead ends: 1487 [2020-09-25 13:35:44,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-25 13:35:44,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1155. [2020-09-25 13:35:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-25 13:35:44,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1484 transitions. [2020-09-25 13:35:44,172 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1484 transitions. Word has length 39 [2020-09-25 13:35:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:44,173 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1484 transitions. [2020-09-25 13:35:44,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:35:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1484 transitions. [2020-09-25 13:35:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 13:35:44,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:44,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:44,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:44,190 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:44,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:44,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1767258319, now seen corresponding path program 1 times [2020-09-25 13:35:44,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:44,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58585438] [2020-09-25 13:35:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:45,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:45,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:47,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:35:47,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3374 [2020-09-25 13:35:47,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:47,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:47,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 13:35:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:47,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:47,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:35:47,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:47,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:47,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:47,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:47,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:35:47,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:35:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:48,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:35:48,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-25 13:35:48,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:48,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:48,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 13:35:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:48,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58585438] [2020-09-25 13:35:48,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:48,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:48,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652817783] [2020-09-25 13:35:48,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:48,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:48,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:48,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:48,290 INFO L87 Difference]: Start difference. First operand 1155 states and 1484 transitions. Second operand 7 states. [2020-09-25 13:35:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:53,182 INFO L93 Difference]: Finished difference Result 3121 states and 4257 transitions. [2020-09-25 13:35:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:35:53,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-09-25 13:35:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:53,206 INFO L225 Difference]: With dead ends: 3121 [2020-09-25 13:35:53,206 INFO L226 Difference]: Without dead ends: 1983 [2020-09-25 13:35:53,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2020-09-25 13:35:53,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1823. [2020-09-25 13:35:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-09-25 13:35:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2294 transitions. [2020-09-25 13:35:53,306 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2294 transitions. Word has length 120 [2020-09-25 13:35:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:53,308 INFO L479 AbstractCegarLoop]: Abstraction has 1823 states and 2294 transitions. [2020-09-25 13:35:53,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2294 transitions. [2020-09-25 13:35:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 13:35:53,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:53,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:53,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:53,314 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:53,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1373722232, now seen corresponding path program 1 times [2020-09-25 13:35:53,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:53,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258689392] [2020-09-25 13:35:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:54,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:56,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:56,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 13:35:56,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:56,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3151 [2020-09-25 13:35:56,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:56,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 13:35:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:56,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:56,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:56,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:35:56,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:35:56,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:56,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:56,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:35:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:56,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:56,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:56,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:56,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:56,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 13:35:56,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:56,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:56,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:56,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:57,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258689392] [2020-09-25 13:35:57,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:57,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:57,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619725402] [2020-09-25 13:35:57,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:57,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:57,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:57,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:57,067 INFO L87 Difference]: Start difference. First operand 1823 states and 2294 transitions. Second operand 7 states. [2020-09-25 13:36:00,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:00,962 INFO L93 Difference]: Finished difference Result 4767 states and 6237 transitions. [2020-09-25 13:36:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:36:00,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-25 13:36:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:00,981 INFO L225 Difference]: With dead ends: 4767 [2020-09-25 13:36:00,981 INFO L226 Difference]: Without dead ends: 2961 [2020-09-25 13:36:00,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:36:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-09-25 13:36:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2883. [2020-09-25 13:36:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2883 states. [2020-09-25 13:36:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 3579 transitions. [2020-09-25 13:36:01,079 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 3579 transitions. Word has length 128 [2020-09-25 13:36:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:01,080 INFO L479 AbstractCegarLoop]: Abstraction has 2883 states and 3579 transitions. [2020-09-25 13:36:01,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 3579 transitions. [2020-09-25 13:36:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 13:36:01,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:01,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:01,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:36:01,084 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:01,084 INFO L82 PathProgramCache]: Analyzing trace with hash 868228625, now seen corresponding path program 1 times [2020-09-25 13:36:01,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:01,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549357671] [2020-09-25 13:36:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:06,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 13:36:06,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:36:06,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 13:36:06,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:06,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:36:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:36:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:06,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:06,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:36:06,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:06,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:36:06,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:06,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:36:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:36:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:36:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:06,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 13:36:06,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 13:36:06,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:06,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 13:36:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:06,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549357671] [2020-09-25 13:36:06,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:06,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:36:06,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885630821] [2020-09-25 13:36:06,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:06,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:06,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:06,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:06,768 INFO L87 Difference]: Start difference. First operand 2883 states and 3579 transitions. Second operand 7 states. [2020-09-25 13:36:12,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:12,246 INFO L93 Difference]: Finished difference Result 5630 states and 7151 transitions. [2020-09-25 13:36:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:36:12,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-25 13:36:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:12,275 INFO L225 Difference]: With dead ends: 5630 [2020-09-25 13:36:12,275 INFO L226 Difference]: Without dead ends: 3829 [2020-09-25 13:36:12,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:36:12,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2020-09-25 13:36:12,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3570. [2020-09-25 13:36:12,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3570 states. [2020-09-25 13:36:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4457 transitions. [2020-09-25 13:36:12,383 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4457 transitions. Word has length 160 [2020-09-25 13:36:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:12,384 INFO L479 AbstractCegarLoop]: Abstraction has 3570 states and 4457 transitions. [2020-09-25 13:36:12,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4457 transitions. [2020-09-25 13:36:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 13:36:12,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:12,390 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:36:12,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:36:12,391 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:12,391 INFO L82 PathProgramCache]: Analyzing trace with hash 283082810, now seen corresponding path program 1 times [2020-09-25 13:36:12,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:12,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462812755] [2020-09-25 13:36:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:17,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:17,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 13:36:17,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:36:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:36:17,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:17,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:36:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-09-25 13:36:17,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:17,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:17,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:17,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:36:17,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:36:17,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:17,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:36:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:36:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:17,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:17,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 13:36:17,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:17,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 13:36:17,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:17,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:17,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:17,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:17,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 13:36:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 13:36:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:18,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:18,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:36:18,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:18,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 13:36:18,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:18,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:36:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 13:36:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 13 proven. 107 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:36:18,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462812755] [2020-09-25 13:36:18,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:18,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:36:18,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867276741] [2020-09-25 13:36:18,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:36:18,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:18,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:36:18,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:36:18,587 INFO L87 Difference]: Start difference. First operand 3570 states and 4457 transitions. Second operand 8 states.