/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/Problem10_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:52,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:52,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:52,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:52,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:52,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:52,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:52,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:52,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:52,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:52,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:52,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:52,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:52,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:52,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:52,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:52,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:52,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:52,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:52,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:52,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:52,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:52,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:52,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:52,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:52,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:52,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:52,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:52,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:52,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:52,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:52,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:52,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:52,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:52,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:52,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:52,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:52,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:52,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:52,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:52,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:52,943 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 13:34:52,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:52,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:52,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:52,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:52,997 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:52,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:52,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:52,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:52,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:52,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:53,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:53,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:53,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:53,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:53,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:53,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:53,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:53,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:53,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:53,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:53,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:53,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:53,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:53,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:53,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:53,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:53,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:53,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:53,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:53,005 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 13:34:53,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:53,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:53,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:53,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:53,486 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:53,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 13:34:53,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ceba5334/28817e8e8c524d03ac75d2f70beca055/FLAG03ed70710 [2020-09-25 13:34:54,233 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:54,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 13:34:54,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ceba5334/28817e8e8c524d03ac75d2f70beca055/FLAG03ed70710 [2020-09-25 13:34:54,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ceba5334/28817e8e8c524d03ac75d2f70beca055 [2020-09-25 13:34:54,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:54,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:54,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:54,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:54,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:54,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:54" (1/1) ... [2020-09-25 13:34:54,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f9fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:54, skipping insertion in model container [2020-09-25 13:34:54,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:54" (1/1) ... [2020-09-25 13:34:54,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:54,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:55,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:55,096 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:55,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:55,393 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:55,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55 WrapperNode [2020-09-25 13:34:55,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:55,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:55,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:55,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:55,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55" (1/1) ... [2020-09-25 13:34:55,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55" (1/1) ... [2020-09-25 13:34:55,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55" (1/1) ... [2020-09-25 13:34:55,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55" (1/1) ... [2020-09-25 13:34:55,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55" (1/1) ... [2020-09-25 13:34:55,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55" (1/1) ... [2020-09-25 13:34:55,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55" (1/1) ... [2020-09-25 13:34:55,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:55,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:55,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:55,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:55,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55" (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 13:34:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:57,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:57,122 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:57,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:57 BoogieIcfgContainer [2020-09-25 13:34:57,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:57,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:57,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:57,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:57,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:54" (1/3) ... [2020-09-25 13:34:57,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:57, skipping insertion in model container [2020-09-25 13:34:57,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:55" (2/3) ... [2020-09-25 13:34:57,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:57, skipping insertion in model container [2020-09-25 13:34:57,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:57" (3/3) ... [2020-09-25 13:34:57,143 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-25 13:34:57,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:57,169 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:57,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:57,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:57,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:57,231 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:57,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:57,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:57,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:57,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:57,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:57,266 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 13:34:57,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:57,277 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] [2020-09-25 13:34:57,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:57,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:57,286 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-25 13:34:57,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:57,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086755843] [2020-09-25 13:34:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:57,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:58,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:34:58,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-09-25 13:34:58,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:58,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:34:58,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:34:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:58,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:58,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:58,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:34:58,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:58,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:58,656 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 13:34:58,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086755843] [2020-09-25 13:34:58,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:58,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:58,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192551561] [2020-09-25 13:34:58,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:58,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:58,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:58,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:58,691 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:35:00,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:00,803 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 13:35:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:35:00,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-25 13:35:00,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:00,831 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 13:35:00,831 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 13:35:00,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 13:35:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 13:35:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 13:35:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 13:35:00,941 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-25 13:35:00,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:00,942 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 13:35:00,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:35:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 13:35:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 13:35:00,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:00,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:00,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:00,952 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:00,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-25 13:35:00,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:00,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899455347] [2020-09-25 13:35:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:05,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 13:35:05,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4736 [2020-09-25 13:35:05,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:05,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 13:35:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:05,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:05,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:05,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:35:05,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:05,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:05,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:06,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:06,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 13:35:06,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:06,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:35:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:35:06,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899455347] [2020-09-25 13:35:06,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:06,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:35:06,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172488866] [2020-09-25 13:35:06,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:35:06,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:06,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:35:06,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:35:06,172 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 13:35:08,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:08,534 INFO L93 Difference]: Finished difference Result 1376 states and 1765 transitions. [2020-09-25 13:35:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:35:08,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-09-25 13:35:08,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:08,541 INFO L225 Difference]: With dead ends: 1376 [2020-09-25 13:35:08,541 INFO L226 Difference]: Without dead ends: 847 [2020-09-25 13:35:08,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:08,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-25 13:35:08,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2020-09-25 13:35:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-09-25 13:35:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1084 transitions. [2020-09-25 13:35:08,604 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1084 transitions. Word has length 124 [2020-09-25 13:35:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:08,605 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1084 transitions. [2020-09-25 13:35:08,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:35:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1084 transitions. [2020-09-25 13:35:08,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 13:35:08,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:08,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:08,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:08,610 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:08,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:08,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-25 13:35:08,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:08,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324769370] [2020-09-25 13:35:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:08,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:10,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:13,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 13:35:13,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4581 [2020-09-25 13:35:13,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:13,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 13:35:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:13,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:13,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:13,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:13,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:35:13,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:13,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:13,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:13,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:13,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:13,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:13,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 13:35:13,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:13,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:13,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:13,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:13,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:13,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:13,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324769370] [2020-09-25 13:35:13,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:13,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:13,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838464960] [2020-09-25 13:35:13,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:13,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:13,699 INFO L87 Difference]: Start difference. First operand 847 states and 1084 transitions. Second operand 8 states. [2020-09-25 13:35:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:17,182 INFO L93 Difference]: Finished difference Result 2642 states and 3685 transitions. [2020-09-25 13:35:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:35:17,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-09-25 13:35:17,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:17,209 INFO L225 Difference]: With dead ends: 2642 [2020-09-25 13:35:17,210 INFO L226 Difference]: Without dead ends: 1960 [2020-09-25 13:35:17,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:35:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-09-25 13:35:17,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1519. [2020-09-25 13:35:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2020-09-25 13:35:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1995 transitions. [2020-09-25 13:35:17,359 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1995 transitions. Word has length 134 [2020-09-25 13:35:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:17,363 INFO L479 AbstractCegarLoop]: Abstraction has 1519 states and 1995 transitions. [2020-09-25 13:35:17,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1995 transitions. [2020-09-25 13:35:17,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 13:35:17,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:17,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:17,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:17,374 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:17,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1117469357, now seen corresponding path program 1 times [2020-09-25 13:35:17,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:17,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621516328] [2020-09-25 13:35:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:17,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:22,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:22,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 13:35:22,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 13:35:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:22,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 13:35:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:22,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:22,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:22,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:22,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:35:22,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:22,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:22,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:22,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:35:22,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 13:35:22,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:22,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 13:35:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:23,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621516328] [2020-09-25 13:35:23,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:23,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:35:23,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372396596] [2020-09-25 13:35:23,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:23,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:23,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:23,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:23,021 INFO L87 Difference]: Start difference. First operand 1519 states and 1995 transitions. Second operand 8 states. [2020-09-25 13:35:26,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:26,005 INFO L93 Difference]: Finished difference Result 4773 states and 6708 transitions. [2020-09-25 13:35:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:35:26,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2020-09-25 13:35:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:26,030 INFO L225 Difference]: With dead ends: 4773 [2020-09-25 13:35:26,030 INFO L226 Difference]: Without dead ends: 3419 [2020-09-25 13:35:26,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:35:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2020-09-25 13:35:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 3379. [2020-09-25 13:35:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3379 states. [2020-09-25 13:35:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4355 transitions. [2020-09-25 13:35:26,161 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4355 transitions. Word has length 191 [2020-09-25 13:35:26,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:26,162 INFO L479 AbstractCegarLoop]: Abstraction has 3379 states and 4355 transitions. [2020-09-25 13:35:26,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4355 transitions. [2020-09-25 13:35:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 13:35:26,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:26,167 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:26,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:26,168 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:26,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:26,168 INFO L82 PathProgramCache]: Analyzing trace with hash -877884703, now seen corresponding path program 1 times [2020-09-25 13:35:26,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:26,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342111011] [2020-09-25 13:35:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:28,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:31,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 13:35:31,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:31,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 13:35:31,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:31,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:31,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:31,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:35:31,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:31,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:31,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:31,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:31,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:31,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:31,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:31,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:31,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:31,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 13:35:31,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:31,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:31,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:31,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 13:35:31,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:31,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:31,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 124 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:32,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342111011] [2020-09-25 13:35:32,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:32,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:35:32,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006654487] [2020-09-25 13:35:32,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:35:32,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:32,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:35:32,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:35:32,083 INFO L87 Difference]: Start difference. First operand 3379 states and 4355 transitions. Second operand 10 states. [2020-09-25 13:35:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:37,239 INFO L93 Difference]: Finished difference Result 8384 states and 11893 transitions. [2020-09-25 13:35:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:35:37,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-09-25 13:35:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:37,279 INFO L225 Difference]: With dead ends: 8384 [2020-09-25 13:35:37,279 INFO L226 Difference]: Without dead ends: 5170 [2020-09-25 13:35:37,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:35:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2020-09-25 13:35:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 4753. [2020-09-25 13:35:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4753 states. [2020-09-25 13:35:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 6477 transitions. [2020-09-25 13:35:37,473 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 6477 transitions. Word has length 213 [2020-09-25 13:35:37,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:37,474 INFO L479 AbstractCegarLoop]: Abstraction has 4753 states and 6477 transitions. [2020-09-25 13:35:37,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:35:37,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 6477 transitions. [2020-09-25 13:35:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 13:35:37,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:37,479 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:35:37,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:37,480 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:37,480 INFO L82 PathProgramCache]: Analyzing trace with hash 342237492, now seen corresponding path program 1 times [2020-09-25 13:35:37,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:37,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142980873] [2020-09-25 13:35:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:37,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking...