/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=LOWLEXORDER --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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:37,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:37,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:37,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:37,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:37,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:37,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:37,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:37,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:37,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:37,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:37,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:37,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:37,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:37,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:37,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:37,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:37,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:37,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:37,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:37,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:37,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:37,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:37,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:37,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:37,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:37,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:37,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:37,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:37,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:37,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:37,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:37,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:37,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:37,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:37,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:37,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:37,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:37,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:37,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:37,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:37,271 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 [2020-09-24 21:44:37,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:37,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:37,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:37,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:37,318 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:37,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:37,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:37,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:37,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:37,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:37,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:37,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:37,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:37,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:37,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:37,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:37,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:37,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:37,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:37,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:37,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:37,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:37,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:37,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:37,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:37,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:37,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:37,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:37,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:37,326 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:37,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:37,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:37,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:37,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:37,851 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:37,852 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-24 21:44:37,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ee811e26/517303fd686e42b59e987e7b8b3fe569/FLAG970cd96df [2020-09-24 21:44:38,603 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:38,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-24 21:44:38,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ee811e26/517303fd686e42b59e987e7b8b3fe569/FLAG970cd96df [2020-09-24 21:44:38,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ee811e26/517303fd686e42b59e987e7b8b3fe569 [2020-09-24 21:44:38,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:38,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:38,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:38,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:38,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:38,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:38" (1/1) ... [2020-09-24 21:44:38,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6643fb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:38, skipping insertion in model container [2020-09-24 21:44:38,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:38" (1/1) ... [2020-09-24 21:44:38,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:38,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:39,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:39,557 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:39,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:39,702 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:39,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39 WrapperNode [2020-09-24 21:44:39,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:39,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:39,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:39,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:39,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39" (1/1) ... [2020-09-24 21:44:39,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39" (1/1) ... [2020-09-24 21:44:39,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39" (1/1) ... [2020-09-24 21:44:39,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39" (1/1) ... [2020-09-24 21:44:39,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39" (1/1) ... [2020-09-24 21:44:39,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39" (1/1) ... [2020-09-24 21:44:39,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39" (1/1) ... [2020-09-24 21:44:39,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:39,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:39,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:39,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:39,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39" (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 [2020-09-24 21:44:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:41,324 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:41,324 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:41,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:41 BoogieIcfgContainer [2020-09-24 21:44:41,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:41,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:41,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:41,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:41,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:38" (1/3) ... [2020-09-24 21:44:41,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9167e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:41, skipping insertion in model container [2020-09-24 21:44:41,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:39" (2/3) ... [2020-09-24 21:44:41,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9167e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:41, skipping insertion in model container [2020-09-24 21:44:41,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:41" (3/3) ... [2020-09-24 21:44:41,344 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-24 21:44:41,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:41,371 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:41,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:41,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:41,431 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:41,431 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:41,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:41,432 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:41,432 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:41,432 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:41,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 21:44:41,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:41,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:41,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:41,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:41,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-24 21:44:41,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:41,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317279773] [2020-09-24 21:44:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:41,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:42,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:44:42,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-09-24 21:44:42,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 21:44:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:42,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:42,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:42,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:44:42,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:42,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:42,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317279773] [2020-09-24 21:44:42,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:42,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:44:42,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771063205] [2020-09-24 21:44:42,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:44:42,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:42,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:44:42,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:44:42,634 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:44:44,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:44,799 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 21:44:44,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:44:44,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-24 21:44:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:44,838 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 21:44:44,839 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 21:44:44,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:44,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 21:44:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 21:44:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 21:44:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 21:44:44,948 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 67 [2020-09-24 21:44:44,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:44,949 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 21:44:44,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:44:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 21:44:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 21:44:44,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:44,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:44,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:44,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:44,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-24 21:44:44,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:44,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684378305] [2020-09-24 21:44:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:45,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:50,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:50,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 21:44:50,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:44:50,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:44:50,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:50,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:44:50,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:50,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-24 21:44:50,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:50,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:50,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:50,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 21:44:50,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:44:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:50,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:50,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:50,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:50,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-24 21:44:50,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:44:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:50,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684378305] [2020-09-24 21:44:50,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:50,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:50,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804965513] [2020-09-24 21:44:50,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:50,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:50,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:50,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:50,846 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 21:44:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:54,210 INFO L93 Difference]: Finished difference Result 1286 states and 1594 transitions. [2020-09-24 21:44:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:44:54,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 146 [2020-09-24 21:44:54,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:54,218 INFO L225 Difference]: With dead ends: 1286 [2020-09-24 21:44:54,219 INFO L226 Difference]: Without dead ends: 757 [2020-09-24 21:44:54,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:44:54,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-09-24 21:44:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 695. [2020-09-24 21:44:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:44:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 859 transitions. [2020-09-24 21:44:54,287 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 859 transitions. Word has length 146 [2020-09-24 21:44:54,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:54,288 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 859 transitions. [2020-09-24 21:44:54,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 859 transitions. [2020-09-24 21:44:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-24 21:44:54,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:54,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:54,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:54,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:54,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1197577330, now seen corresponding path program 1 times [2020-09-24 21:44:54,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:54,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388251293] [2020-09-24 21:44:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:54,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:55,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-24 21:44:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:44:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-09-24 21:44:59,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:44:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:44:59,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-24 21:44:59,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:44:59,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:59,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:44:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:59,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:59,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:59,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 21:44:59,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:44:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:59,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:44:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:00,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:45:00,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:00,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-24 21:45:00,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:00,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:45:00,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:45:00,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388251293] [2020-09-24 21:45:00,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:00,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:00,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648445885] [2020-09-24 21:45:00,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:00,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:00,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:00,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:00,491 INFO L87 Difference]: Start difference. First operand 695 states and 859 transitions. Second operand 9 states. [2020-09-24 21:45:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:04,441 INFO L93 Difference]: Finished difference Result 1586 states and 2072 transitions. [2020-09-24 21:45:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:45:04,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 275 [2020-09-24 21:45:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:04,448 INFO L225 Difference]: With dead ends: 1586 [2020-09-24 21:45:04,448 INFO L226 Difference]: Without dead ends: 1032 [2020-09-24 21:45:04,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-09-24 21:45:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 996. [2020-09-24 21:45:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-09-24 21:45:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1205 transitions. [2020-09-24 21:45:04,491 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1205 transitions. Word has length 275 [2020-09-24 21:45:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:04,493 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1205 transitions. [2020-09-24 21:45:04,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1205 transitions. [2020-09-24 21:45:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-09-24 21:45:04,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:04,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:04,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:04,500 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:04,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:04,502 INFO L82 PathProgramCache]: Analyzing trace with hash -736136424, now seen corresponding path program 1 times [2020-09-24 21:45:04,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:04,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135398990] [2020-09-24 21:45:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-09-24 21:45:09,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:45:09,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:45:09,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:45:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-09-24 21:45:09,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:09,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:09,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:09,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:45:09,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:09,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:09,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:10,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:10,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 21:45:10,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:45:10,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:10,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:10,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:10,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-09-24 21:45:10,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:45:10,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 76 proven. 101 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:11,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135398990] [2020-09-24 21:45:11,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:11,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 21:45:11,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710026296] [2020-09-24 21:45:11,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:45:11,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:11,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:45:11,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:45:11,223 INFO L87 Difference]: Start difference. First operand 996 states and 1205 transitions. Second operand 16 states. [2020-09-24 21:45:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:17,436 INFO L93 Difference]: Finished difference Result 2781 states and 3573 transitions. [2020-09-24 21:45:17,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 21:45:17,437 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 281 [2020-09-24 21:45:17,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:17,449 INFO L225 Difference]: With dead ends: 2781 [2020-09-24 21:45:17,450 INFO L226 Difference]: Without dead ends: 1924 [2020-09-24 21:45:17,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-09-24 21:45:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-09-24 21:45:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1675. [2020-09-24 21:45:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2020-09-24 21:45:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2192 transitions. [2020-09-24 21:45:17,517 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2192 transitions. Word has length 281 [2020-09-24 21:45:17,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:17,518 INFO L479 AbstractCegarLoop]: Abstraction has 1675 states and 2192 transitions. [2020-09-24 21:45:17,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:45:17,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2192 transitions. [2020-09-24 21:45:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-24 21:45:17,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:17,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:17,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:17,526 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:17,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:17,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1184549856, now seen corresponding path program 1 times [2020-09-24 21:45:17,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:17,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220421624] [2020-09-24 21:45:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:22,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-09-24 21:45:22,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:22,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:45:22,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-09-24 21:45:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:22,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:22,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:22,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:22,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:45:22,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:22,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:22,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:22,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:22,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 21:45:22,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:23,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:23,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 21:45:23,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:23,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-24 21:45:23,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 21:45:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:23,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220421624] [2020-09-24 21:45:23,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:23,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:23,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991798280] [2020-09-24 21:45:23,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:23,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:23,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:23,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:23,532 INFO L87 Difference]: Start difference. First operand 1675 states and 2192 transitions. Second operand 10 states.